WO2021042775A1

WO2021042775A1 - Optical module

Info

Publication number: WO2021042775A1
Application number: PCT/CN2020/093298
Authority: WO
Inventors: 董本正; 葛建平; 谢一帆; 傅钦豪; 黄续杰
Original assignee: 青岛海信宽带多媒体技术有限公司
Priority date: 2019-09-02
Filing date: 2020-05-29
Publication date: 2021-03-11

Abstract

An optical module (200), comprising an inner housing (1). A heat insulation plate (5) is provided in the inner housing (1) to separate the inner housing (1) into a light emitting cavity (101) and a light receiving cavity (102); the inner housing (1) is provided with an optical fiber adapter (2) communicated with the light emitting cavity (101). In the light emitting cavity (101), a light outlet of a laser chip (61) corresponds to a light inlet of the optical fiber adapter (2), and light emitted by the laser chip (61) is emitted after entering the optical fiber adapter (2). In the light receiving cavity (102), an optical signal from the optical fiber adapter (2) is reflected after radiating a first filter (88); the reflected light radiates a reflective sheet (82) via a light through port (51) to generate secondary reflection; the secondarily reflected light enters a reflective surface (84) via a second filter (83) to generate downward tertiary reflection, and the tertiarily reflected light is received by a light receiving chip (85). The optical module (200) forms a single-fiber bidirectional optical module (200), and can ensure optical path coupling angles of optical devices with the optical fiber adapter (2), thereby enabling the coupling effect to be good.

Description

一种光模块An optical module

本申请要求在2019年09月02日提交中国专利局、申请号为201910824700.5、发明名称为“一种光模块”的中国专利申请、要求在2019年09月02日提交中国专利局、申请号为201910824702.4、发明名称为“一种光模块”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application requires that it be submitted to the Chinese Patent Office on September 02, 2019, with the application number of 201910824700.5, and the invention title is "a kind of optical module". The Chinese patent application is required to be submitted to the China Patent Office on September 02, 2019. The application number is 201910824702.4. The priority of the Chinese patent application whose invention title is "a kind of optical module", the entire content of which is incorporated into this application by reference.

技术领域Technical field

本申请涉及光通信技术领域，尤其涉及一种光模块。This application relates to the field of optical communication technology, and in particular to an optical module.

背景技术Background technique

由于光纤通信领域中对通信带宽的要求越来越高，使得全球光通信正处在一个飞速发展时期。而在高速数据通信领域中，为了保障数据能够长距离高速传输，本领域通常采用光模块实现不同波长光的发射和接收。Due to the increasing requirements for communication bandwidth in the field of optical fiber communication, global optical communication is in a period of rapid development. In the field of high-speed data communications, in order to ensure long-distance and high-speed transmission of data, optical modules are usually used in this field to transmit and receive light of different wavelengths.

已有的光模块通常指用于光电转换的集成模块，其由光接收器件和对应的光纤适配器封装成光接收模块，由光发射器件和对应的光纤适配器封装成光发射模块，再将光接收模块、光发射模块和电路板进行封装而成。在信号转换过程中，光接收模块在由对应的光纤适配器接收到光信号后，会将光信号转换成电信号，再通过电路板将电信号传输至光发射模块；光发射模块在接收到电信号后，会将电信号转换成光信号，再由与光发射模块对应的光纤适配器射出，从而实现光电信号的转换。The existing optical module usually refers to an integrated module for photoelectric conversion, which is packaged into a light receiving module by a light receiving device and a corresponding optical fiber adapter, and packaged into a light transmitting module by a light emitting device and a corresponding optical fiber adapter, and then the light is received The module, the light emitting module and the circuit board are packaged. In the signal conversion process, the optical receiving module will convert the optical signal into an electrical signal after receiving the optical signal by the corresponding optical fiber adapter, and then transmit the electrical signal to the optical transmitting module through the circuit board; the optical transmitting module receives the electrical signal After the signal is received, the electrical signal is converted into an optical signal, which is then emitted by the optical fiber adapter corresponding to the optical transmitter module, thereby realizing the conversion of the optical signal.

已有的光模块中分别为光发射器件和光接收器件配备对应的光纤适配器，形成双纤双向的光模块。双纤双向的光模块可进行并行信号传输，因此，需要光器件(光发射器件和光接收器件)与对应的光纤适配器形成较好的光路耦合角度。但由于光纤适配器的体积较大，光模块为适配两个光纤适配器，易导致光器件与光模块外壳之间产生缝隙，使得光器件无法精准定位，进而影响光器件与对应的光纤适配器的光路耦合角度。The existing optical modules are respectively equipped with corresponding optical fiber adapters for the light emitting device and the light receiving device to form a dual-fiber bidirectional optical module. The dual-fiber bidirectional optical module can carry out parallel signal transmission. Therefore, the optical device (light emitting device and light receiving device) and the corresponding optical fiber adapter are required to form a better optical path coupling angle. However, due to the large size of the optical fiber adapter, the optical module is adapted to two optical fiber adapters, which easily causes a gap between the optical device and the optical module housing, which makes the optical device unable to be accurately positioned, which affects the optical path between the optical device and the corresponding optical fiber adapter. Coupling angle.

发明内容Summary of the invention

本申请提供了一种光模块，包括：内壳，所述内壳内设有隔热板，所述隔热板将所述内壳分隔成光发射腔和光接收腔；所述内壳的一端设有与所述光发射腔连通的光纤适配器；The present application provides an optical module, including: an inner shell in which a heat insulation board is arranged, and the heat insulation board separates the inner shell into a light emitting cavity and a light receiving cavity; one end of the inner shell Provided with an optical fiber adapter communicating with the light emitting cavity;

所述光发射腔内设有激光芯片和第一滤波片，所述激光芯片发出的光信号透过所述第一滤波片进入所述光纤适配器后射出；A laser chip and a first filter are arranged in the light emitting cavity, and the optical signal emitted by the laser chip enters the optical fiber adapter through the first filter and is emitted;

所述隔热板上设有光通口，所述光接收腔内设有反射片、第二滤波片、反射面和光接收芯片；The heat insulation board is provided with a light passage, and the light receiving cavity is provided with a reflective sheet, a second filter sheet, a reflective surface and a light receiving chip;

来自所述光纤适配器的光信号传播到所述第一滤波片后发生反射，形成的反射光经过所述光通***向所述反射片，经所述反射片再次反射向所述第二滤波片，通过所述第二滤波片的光由所述反射面向所述光接收芯片的方向反射。The optical signal from the optical fiber adapter propagates to the first filter and is reflected, and the formed reflected light passes through the light opening and is directed to the reflector, and is reflected again to the second filter through the reflector. The light passing through the second filter is reflected by the reflecting surface in the direction of the light receiving chip.

本申请还提供了一种光模块，其特征在于，包括：内壳及位于所述内壳一端的光纤适配器；The present application also provides an optical module, which is characterized by comprising: an inner shell and an optical fiber adapter located at one end of the inner shell;

所述内壳内包括激光芯片、第一滤波片，反射片、第二滤波片、反射棱镜组件和光接收芯片；The inner shell includes a laser chip, a first filter, a reflection sheet, a second filter, a reflection prism assembly and a light receiving chip;

所述激光芯片发出的光信号通过所述第一滤波片进入所述光纤适配器后射出；来自所述光纤适配器的光信号经所述第一滤波片反射后射向所述反射片，经所述反射片反射后透过所述第二滤波片射向所述反射棱镜组件；The optical signal emitted by the laser chip enters the optical fiber adapter through the first filter and then is emitted; the optical signal from the optical fiber adapter is reflected by the first filter and then is directed to the reflector, and passes through the optical fiber adapter. The reflecting sheet is reflected by the second filter sheet and directed toward the reflecting prism assembly;

所述反射棱镜组件的入光面与光信号的传播方向呈非垂直角度，所述反射棱镜组件的末端端面为倾斜的反射斜面，所述反射棱镜组件的出光底面的下方设置有所述光接收芯片；The light incident surface of the reflective prism component is at a non-perpendicular angle to the propagation direction of the optical signal, the end face of the reflective prism component is a slanted reflective inclined surface, and the light receiving surface is provided under the bottom surface of the reflective prism component. chip;

来自所述第二滤波片的光信号由所述入光面射进所述反射棱镜组件，传播到所述反射斜面并反射后射向所述出光底面，以被所述出光底面下方的所述光接收芯片接收The light signal from the second filter is injected into the reflecting prism assembly from the light incident surface, propagates to the reflecting inclined surface and is reflected on the light emitting bottom surface, so as to be absorbed by the light emitting bottom surface below the light emitting bottom surface. Light receiving chip receiving

附图说明Description of the drawings

为了更清楚地说明本申请的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。此外，以下描述中的附图可以视作示意图，并非对本公开实施例所涉及的产品的实际尺寸的限制。In order to explain the technical solutions of the present application more clearly, the following will briefly introduce the drawings needed in the embodiments. Obviously, for those of ordinary skill in the art, without paying creative labor, Other drawings can also be obtained from these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not a limitation on the actual size of the products involved in the embodiments of the present disclosure.

图1为光通信终端连接关系示意图；Figure 1 is a schematic diagram of the connection relationship of an optical communication terminal;

图2为光网络单元结构示意图；Figure 2 is a schematic diagram of the structure of an optical network unit;

图3为光模块的结构示意图；Figure 3 is a schematic diagram of the structure of the optical module;

图4为本申请实施例提供光模块分解结构示意图；4 is a schematic diagram of an exploded structure of an optical module provided by an embodiment of the application;

图5为本申请实施例提供的光模块的整体结构示意图；FIG. 5 is a schematic diagram of the overall structure of an optical module provided by an embodiment of the application;

图6为本申请实施例提供的光模块的分解结构示意图；FIG. 6 is a schematic diagram of an exploded structure of an optical module provided by an embodiment of the application;

图7为本申请实施例提供的光模块的内部结构示意图；FIG. 7 is a schematic diagram of the internal structure of an optical module provided by an embodiment of the application;

图8为本申请实施例提供的光模块的另一角度的内部结构示意图；FIG. 8 is a schematic diagram of the internal structure of the optical module provided by an embodiment of the application from another angle;

图9为本申请实施例提供的光发射腔的内部结构示意图；FIG. 9 is a schematic diagram of the internal structure of a light emitting cavity provided by an embodiment of the application;

图10为本申请实施例提供的光发射腔的另一角度的内部结构示意图；10 is a schematic diagram of the internal structure of the light emitting cavity provided by an embodiment of the application from another angle;

图11为本申请实施例提供的光接收腔的内部结构示意图；11 is a schematic diagram of the internal structure of a light receiving cavity provided by an embodiment of the application;

图12为本申请一些实施例提供的光模块的局部俯视图；FIG. 12 is a partial top view of an optical module provided by some embodiments of the application;

图13为本申请一些实施例提供的三角棱镜和第三滤波片的结构示意图；FIG. 13 is a schematic diagram of the structure of a triangular prism and a third filter provided by some embodiments of the application;

图14为本申请一些实施例提供的三角棱镜和第三滤波片上的光路图；14 is a diagram of the optical path on the triangular prism and the third filter provided by some embodiments of the application;

图15为本申请实施例提供的反射面的结构示意图；15 is a schematic diagram of the structure of a reflective surface provided by an embodiment of the application;

图16为本申请实施例提供的光接收腔的光器件结构示意图；16 is a schematic diagram of the structure of an optical device of a light receiving cavity provided by an embodiment of the application;

图17为本申请实施例提供的光接收腔的分解结构示意图；FIG. 17 is a schematic diagram of an exploded structure of a light receiving cavity provided by an embodiment of the application;

图18所示的光接收腔的局部侧视图；A partial side view of the light receiving cavity shown in FIG. 18;

图19所示的反射棱镜组件的结构示意图；The structure diagram of the reflective prism assembly shown in FIG. 19;

图20所示的反射棱镜组件的光路传播路径示意图。The schematic diagram of the optical path propagation path of the reflective prism assembly shown in FIG. 20.

具体实施方式detailed description

下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

说明书的描述中，术语“一个实施例”、“一些实施例”、“示例性实施例”、“示例”、“特定示例”或“一些示例”等旨在表明与该实施例或示例相关的特定特征、结构、材料或特性包括在本公开的至少一个实施例或示例中。上述术语的示意性表示不一定是指同一实施例或示例。此外，所述的特定特征、结构、材料或特点可以以任何适当方式包括在任何一个或多个实施例或示例中。In the description of the specification, the terms “one embodiment”, “some embodiments”, “exemplary embodiments”, “examples”, “specific examples” or “some examples” are intended to indicate that the embodiments or examples are related Specific features, structures, materials, or characteristics are included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials, or characteristics described may be included in any one or more embodiments or examples in any suitable manner.

以下，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。Hereinafter, the terms “first” and “second” are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features.

光纤通信的核心环节之一是光电信号的转换。光纤通信使用携带信息的光信号在光纤/光波导中传输，利用光在光纤中的无源传输特性可以实现低成本、低损耗的信息传输。而计算机等信息处理设备采用的是电信号，这就需要在信号传输过程中实现电信号与光信号的相互转换。One of the core links of optical fiber communication is the conversion of photoelectric signals. Optical fiber communication uses information-carrying optical signals to be transmitted in optical fibers/optical waveguides, and the passive transmission characteristics of light in optical fibers can realize low-cost and low-loss information transmission. However, information processing equipment such as computers uses electrical signals, which requires mutual conversion between electrical signals and optical signals in the signal transmission process.

光模块在光纤通信技术领域中实现上述光电转换功能，光信号与电信号的相互转换是光模块的核心功能。光模块通过电路板上的金手指实现与外部上位机之间的电连接，主要的电连接包括供电、I2C信号、传输数据信号以及接地等，金手指实现的电连接方式已经成为光模块行业的标准方式，以此为基础，电路板是大部分光模块中必备的技术特征。The optical module implements the above-mentioned photoelectric conversion function in the field of optical fiber communication technology, and the mutual conversion of optical signals and electrical signals is the core function of the optical module. The optical module realizes the electrical connection with the external host computer through the golden finger on the circuit board. The main electrical connections include power supply, I2C signal, data signal transmission and grounding, etc. The electrical connection method realized by the golden finger has become the optical module industry. The standard method, based on this, the circuit board is a necessary technical feature in most optical modules.

图1为光通信终端连接关系示意图。如图1所示，光通信终端的连接主要包括光网络单元100、光模块200、光纤101及网线103；光纤101的一端连接远端服务器，网线103的一端连接本地信息处理设备，本地信息处理设备与远端服务器的连接由光纤101与网线103的连接完成；而光纤101与网线103之间的连接由具有光模块的光网络单元100完成。Figure 1 is a schematic diagram of the connection relationship of an optical communication terminal. As shown in Figure 1, the connection of an optical communication terminal mainly includes an optical network unit 100, an optical module 200, an optical fiber 101, and a network cable 103; one end of the optical fiber 101 is connected to a remote server, and one end of the network cable 103 is connected to a local information processing device. The connection between the device and the remote server is completed by the connection between the optical fiber 101 and the network cable 103; and the connection between the optical fiber 101 and the network cable 103 is completed by the optical network unit 100 having an optical module.

光模块200的光口与光纤101连接，与光纤101建立双向的光信号连接；光模块200的电口接入光网络单元100中，与光网络单元100建立双向的电信号连接；光模块200实现光信号与电信号的相互转换，从而实现在光纤101与光网络单元100之间建立连接。具体地，来自光纤101的光信号由光模块200转换为电信号后输入至光网络单元100中，来自光网络单元100的电信号由光模块200转换为光信号输入至光纤101中。光模块200是实现光电信号相互转换的工具，不具有处理数据的功能，在上述光电转换过程中，信息并未发生变化。The optical port of the optical module 200 is connected to the optical fiber 101 to establish a bidirectional optical signal connection with the optical fiber 101; the electrical port of the optical module 200 is connected to the optical network unit 100 to establish a bidirectional electrical signal connection with the optical network unit 100; the optical module 200 The mutual conversion between the optical signal and the electrical signal is realized, thereby realizing the establishment of a connection between the optical fiber 101 and the optical network unit 100. Specifically, the optical signal from the optical fiber 101 is converted into an electrical signal by the optical module 200 and then input into the optical network unit 100, and the electrical signal from the optical network unit 100 is converted into an optical signal by the optical module 200 and input into the optical fiber 101. The optical module 200 is a tool for realizing the mutual conversion of photoelectric signals, and does not have the function of processing data. In the foregoing photoelectric conversion process, the information has not changed.

光网络单元100具有光模块接口102，用于接入光模块200，与光模块200建立双向的电信号连接；光网络单元100具有网线接口104，用于接入网线103，与网线103建立双向的电信号连接；光模块200与网线103之间通过光网络单元100建立连接。具体地，光网络单元100将来自光模块200的信号传递给网线103，将来自网线103的信号传递给光模块200，光网络单元100作为光模块200的上位机监控光模块200的工作。The optical network unit 100 has an optical module interface 102, which is used to connect to the optical module 200 and establish a two-way electrical signal connection with the optical module 200; the optical network unit 100 has a network cable interface 104, which is used to connect to the network cable 103 and establish a two-way connection with the network cable 103 The electrical signal connection; the optical module 200 and the network cable 103 establish a connection through the optical network unit 100. Specifically, the optical network unit 100 transfers the signal from the optical module 200 to the network cable 103, and transfers the signal from the network cable 103 to the optical module 200. The optical network unit 100 acts as the upper computer of the optical module 200 to monitor the operation of the optical module 200.

至此，远端服务器通过光纤101、光模块200、光网络单元100及网线103，与本地信息处理设备之间建立双向的信号传递通道。So far, the remote server establishes a bidirectional signal transmission channel with the local information processing equipment through the optical fiber 101, the optical module 200, the optical network unit 100, and the network cable 103.

常见的信息处理设备包括路由器、交换机、电子计算机等；光网络单元100是光模块200的上位机，向光模块200提供数据信号，并接收来自光模块200的数据信号，常见的光模块上位机还有光线路终端等。Common information processing equipment includes routers, switches, electronic computers, etc.; the optical network unit 100 is the upper computer of the optical module 200, which provides data signals to the optical module 200 and receives data signals from the optical module 200. The common optical module upper computer There are optical line terminals and so on.

图2为光网络单元结构示意图。如图2所示，在光网络单元100中具有电路板105，在电路板105的表面设置笼子106；在笼子106中设置有电连接器，用于接入金手指等光模块电口；在笼子106上设置有散热器107，散热器107具有增大散热面积的翅片等凸起结构。Figure 2 is a schematic diagram of the optical network unit structure. As shown in Figure 2, the optical network unit 100 has a circuit board 105, and a cage 106 is provided on the surface of the circuit board 105; an electrical connector is provided in the cage 106 for accessing optical module electrical ports such as golden fingers; A radiator 107 is provided on the cage 106, and the radiator 107 has a convex structure such as fins to increase the heat dissipation area.

光模块200***光网络单元100中，具体为光模块200的电口***笼子106中的电连接器，光模块200的光口与光纤101连接。The optical module 200 is inserted into the optical network unit 100. Specifically, the electrical port of the optical module 200 is inserted into the electrical connector in the cage 106, and the optical port of the optical module 200 is connected to the optical fiber 101.

笼子106位于电路板105上，将电路板105上的电连接器包裹在笼子106中；光模块200***笼子106中，由笼子106固定光模块200，光模块200产生的热量通过光模块外壳传导给笼子106，最终通过笼子106上的散热器107进行扩散。The cage 106 is located on the circuit board 105, and the electrical connector on the circuit board 105 is wrapped in the cage 106; the optical module 200 is inserted into the cage 106, and the optical module 200 is fixed by the cage 106, and the heat generated by the optical module 200 is conducted through the optical module housing Give the cage 106, and finally spread through the radiator 107 on the cage 106.

图3为本申请实施例提供的一种光模块结构示意图，图4为本申请实施例提供光模块分解结构示意图。如图3、图4所示，本申请实施例提供的光模块200包括上外壳201、下外壳202、解锁手柄203、电路板300及光收发器件400，其中上外壳201和下外壳202共同构成光模块200的外壳。FIG. 3 is a schematic diagram of the structure of an optical module provided by an embodiment of the application, and FIG. 4 is a schematic diagram of an exploded structure of the optical module provided by an embodiment of the application. As shown in Figures 3 and 4, the optical module 200 provided by the embodiment of the present application includes an upper housing 201, a lower housing 202, an unlocking handle 203, a circuit board 300, and an optical transceiver 400, wherein the upper housing 201 and the lower housing 202 jointly constitute The housing of the optical module 200.

上外壳201与下外壳202形成具有两个开口的空腔，两个开口可以位于外壳的同一侧面，也可以位于外壳的不同侧面。示例性的，图3所示的为两个开口位于外壳的同一侧的情形，其中一个开口为电口204，用于***光网络单元等上位机中，另一个开口为光口205，用于外部光纤接入以连接内部光纤，电路板300、光收发器件400等光电器件位于包裹腔体中。The upper housing 201 and the lower housing 202 form a cavity with two openings. The two openings may be located on the same side of the housing or on different sides of the housing. Exemplarily, Figure 3 shows a situation where two openings are located on the same side of the housing. One of the openings is an electrical port 204 for inserting into an upper computer such as an optical network unit, and the other opening is an optical port 205 for The external optical fiber is connected to connect the internal optical fiber, and optoelectronic devices such as the circuit board 300 and the optical transceiver device 400 are located in the package cavity.

在一些实施例中，上外壳及下外壳可以采用金属材料，利于实现电磁屏蔽以及散热；另外采用上外壳和下外壳结合装配的方式，便于将电路板等器件安装到外壳中。In some embodiments, the upper shell and the lower shell can be made of metal materials to facilitate electromagnetic shielding and heat dissipation; in addition, the upper shell and the lower shell are combined and assembled to facilitate the installation of circuit boards and other components into the shell.

解锁手柄203位于下外壳202的外壁，通过拉动解锁手柄的末端可以在使解锁手柄在外壁表面相对移动；当光模块***上位机时通过解锁手柄将光模块固定在上位机的笼子里；通过拉动解锁手柄以解除光模块与上位机的卡合关系，从而可以将光模块从上位机的笼子里抽出。The unlocking handle 203 is located on the outer wall of the lower housing 202. By pulling the end of the unlocking handle, the unlocking handle can move relatively on the outer wall surface; when the optical module is inserted into the upper computer, the optical module is fixed in the cage of the upper computer by the unlocking handle; Unlock the handle to release the engagement relationship between the optical module and the host computer, so that the optical module can be withdrawn from the cage of the host computer.

在一些实施例中，光模块通常由光接收器件和对应的光纤适配器封装成光接收模块，由光发射器件和对应的光纤适配器封装成光发射模块，再将光接收模块、光发射模块和电路板进行封装而成。且分别为光发射器件和光接收器件配备对应的光纤适配器，形成双纤双向的光模块。双纤双向的光模块可进行并行信号传输，因此，需要光器件(光发射器件和光接收器件)与对应的光纤适配器形成较好的光路耦合角度。但由于光纤适配器的体积较大，光模块为适配两个光纤适配器，易导致光器件与光模块外壳之间产生缝隙，使得光器件无法精准定位，进而影响光器件与对应的光纤适配器的光路耦合角度。为提高光模块的耦合效果，本申请实施例提供一种光模块，具有单纤双向的特点，耦合效果更好。In some embodiments, the optical module is usually packaged into a light receiving module by a light receiving device and a corresponding optical fiber adapter, and a light emitting module is packaged by the light emitting device and the corresponding optical fiber adapter, and then the light receiving module, the light emitting module, and the circuit are packaged into a light emitting module. The board is packaged. In addition, the light emitting device and the light receiving device are equipped with corresponding fiber optic adapters to form a dual-fiber bidirectional optical module. The dual-fiber bidirectional optical module can carry out parallel signal transmission. Therefore, the optical device (light emitting device and light receiving device) and the corresponding optical fiber adapter are required to form a better optical path coupling angle. However, due to the large size of the optical fiber adapter, the optical module is adapted to two optical fiber adapters, which easily causes a gap between the optical device and the optical module housing, which makes the optical device unable to be accurately positioned, which affects the optical path between the optical device and the corresponding optical fiber adapter. Coupling angle. In order to improve the coupling effect of the optical module, an embodiment of the present application provides an optical module, which has a single-fiber bidirectional feature and a better coupling effect.

图5为本申请实施例提供的光收发器件的整体结构示意图；图6为本申请实施例提供的光收发器件的分解结构示意图。FIG. 5 is a schematic diagram of the overall structure of an optical transceiver device provided by an embodiment of this application; FIG. 6 is a schematic diagram of an exploded structure of an optical transceiver device provided by an embodiment of this application.

本申请实施例提供的一种光模块，具体为图5和图6所示的光收发器件，包括：内壳1，内壳1由盖板110和腔体120构成，盖板110扣合在腔体120上构成封闭的空腔，空腔内设置有光发射器件6和光接收器件8。在一些实施例中光模块具有单纤双向的特点，因此将光发射器件6和光接收器件8封装在同一个腔体内，且在内壳1上连通一个光纤适配器2，由光纤适配器2同时实现光信号的接收和发出。An optical module provided by an embodiment of the present application, specifically the optical transceiver device shown in FIG. 5 and FIG. 6, includes an inner shell 1, which is composed of a cover plate 110 and a cavity 120, and the cover plate 110 is buckled in A closed cavity is formed on the cavity 120, and a light emitting device 6 and a light receiving device 8 are arranged in the cavity. In some embodiments, the optical module has the characteristics of single-fiber bidirectional. Therefore, the light emitting device 6 and the light receiving device 8 are packaged in the same cavity, and an optical fiber adapter 2 is connected to the inner shell 1, and the optical fiber adapter 2 realizes the optical fiber at the same time. Signal reception and transmission.

在光模块工作时，由于光发射器件6产生的热量会扩散到光接收器件8所处的区域，使得光发射器件6和光接收器件8易产生热串扰现象，从而影响光接收器件在利用TEC组件控温筛选光信号的效果，影响波长调整精度。When the optical module is working, the heat generated by the light emitting device 6 will diffuse to the area where the light receiving device 8 is located, making the light emitting device 6 and the light receiving device 8 prone to thermal crosstalk, which affects the use of TEC components by the light receiving device. The effect of temperature control to filter the optical signal affects the accuracy of wavelength adjustment.

因此，为避免光发射器件6和光接收器件8之间产生热串扰，参见图7所示的光收发器件的内部结构示意图，本申请实施例提供的光模块，在内壳1内设有隔热板5，隔热板5设置在内壳1内设置并将内壳1分隔成两个区域，使得隔热板5与内壳1形成光发射腔101和光接收腔102。将光发射器件6放置于光发射腔101内，将光接收器件8放置于光接收腔102内。Therefore, in order to avoid thermal crosstalk between the light emitting device 6 and the light receiving device 8, referring to the schematic diagram of the internal structure of the optical transceiver shown in FIG. The board 5 and the heat insulation board 5 are arranged in the inner shell 1 and divide the inner shell 1 into two areas, so that the heat insulation board 5 and the inner shell 1 form a light emitting cavity 101 and a light receiving cavity 102. The light emitting device 6 is placed in the light emitting cavity 101, and the light receiving device 8 is placed in the light receiving cavity 102.

本实施例中，将光纤适配器2设置在光发射腔101对应的内壳处，即将光纤适配器2与光发射腔101连通。内壳1安装光纤适配器2的位置设有通孔14，为保证光纤适配器2的固定稳定，内壳1还包括中空的管壳130，管壳130固定在腔体120的侧壁上，管壳130与通孔14连通，管壳130用于安装光纤适配器2，使得光纤适配器2的光纤插芯21由通孔14露出，便于光纤插芯21接收光发射器件6发射的光信号，以及，发射光信号被光接收器件8接收。在一些示例中，管壳130可与腔体120一体成型。In this embodiment, the fiber optic adapter 2 is arranged at the inner shell corresponding to the light emitting cavity 101, that is, the fiber optic adapter 2 is connected with the light emitting cavity 101. The inner shell 1 is provided with a through hole 14 at the position where the fiber optic adapter 2 is installed. In order to ensure the fixation and stability of the fiber optic adapter 2, the inner shell 1 also includes a hollow tube shell 130 which is fixed on the side wall of the cavity 120. 130 is connected to the through hole 14. The tube case 130 is used to install the fiber optic adapter 2, so that the fiber optic ferrule 21 of the fiber optic adapter 2 is exposed from the through hole 14, so that the fiber optic ferrule 21 can receive the optical signal emitted by the light emitting device 6 and transmit The light signal is received by the light receiving device 8. In some examples, the tube shell 130 may be integrally formed with the cavity 120.

光发射腔101内的光发射器件6的出光口与光纤适配器2的入光口对应，使得光发射器件6发出的光能够进入光纤适配器2内，光纤适配器2内安装有光纤插芯21，由光纤插芯21将接收到的光发射器件6发出的光射出。在信号转换过程中，光发射器件6在接收到电信号后，会将电信号转换成光信号发出，再进入与光发射器件6对应的光纤适配器2后射出。The light exit port of the light emitting device 6 in the light emitting cavity 101 corresponds to the light entrance port of the fiber optic adapter 2, so that the light emitted by the light emitting device 6 can enter the fiber optic adapter 2, and the fiber optic ferrule 21 is installed in the fiber optic adapter 2. The optical fiber ferrule 21 emits the received light emitted by the light emitting device 6. In the signal conversion process, after the light emitting device 6 receives the electric signal, it converts the electric signal into an optical signal and sends it out, and then enters the optical fiber adapter 2 corresponding to the light emitting device 6 and emits it.

为了对光器件(光发射器件6和光接收器件8)进行供电，本实施例提供的光模块，分别为光发射器件6和光接收器件8配置相应的柔性电路板，即在内壳1的一端安装有第一柔性电路板3和第二柔性电路板4。两个柔性电路板与光纤适配器2安装在内壳1的不同侧面上，内壳的与光纤适配器2的安装位置相对的一端外侧壁开设柔性板安装槽13，将第一柔性电路板3和第二柔性电路板4固定在柔性板安装槽13内。In order to supply power to the optical devices (light emitting device 6 and light receiving device 8), the optical module provided in this embodiment is configured with corresponding flexible circuit boards for the light emitting device 6 and the light receiving device 8, respectively, that is, installed at one end of the inner housing 1. There are a first flexible circuit board 3 and a second flexible circuit board 4. The two flexible circuit boards and the optical fiber adapter 2 are installed on different sides of the inner shell 1, and the outer side wall of the inner shell opposite to the installation position of the optical fiber adapter 2 is provided with a flexible board installation groove 13, and the first flexible circuit board 3 and the second The two flexible circuit boards 4 are fixed in the flexible board installation groove 13.

光发射腔101内设有光发射器件6，第一柔性电路板3延伸至光发射腔101内，第一柔性电路板3与光发射器件6电连接。第一柔性电路板3为光发射器件6供电和提供电信号，光发射器件6将接收到的电信号转换为光信号后射出。光接收腔102内设有光接收器件8，第二柔性电路板4延伸至光接收腔102内，第二柔性电路板4与光接收器件8电连接，光接收器件8在接收到来自光纤适配器2的光信号后传输至第二柔性电路板4形成电信号。The light emitting cavity 101 is provided with a light emitting device 6, the first flexible circuit board 3 extends into the light emitting cavity 101, and the first flexible circuit board 3 is electrically connected to the light emitting device 6. The first flexible circuit board 3 supplies power and electrical signals to the light emitting device 6, and the light emitting device 6 converts the received electrical signal into an optical signal and emits it. A light receiving device 8 is provided in the light receiving cavity 102. The second flexible circuit board 4 extends into the light receiving cavity 102. The second flexible circuit board 4 is electrically connected to the light receiving device 8. The light receiving device 8 is The optical signal of 2 is transmitted to the second flexible circuit board 4 to form an electrical signal.

本实施例提供的光模块为单纤双向的光模块，光发射器件6和光接收器件8共用一个光纤适配器2，即由光纤适配器2同时进行光信号的接收和发出。为实现光信号的接收，光发射器件6的出光口与光纤适配器2的入光口对应，光发射器件6发出的光由入光口进入光纤适配器2后射出。The optical module provided in this embodiment is a single-fiber bidirectional optical module, and the light emitting device 6 and the light receiving device 8 share an optical fiber adapter 2, that is, the optical fiber adapter 2 simultaneously receives and transmits optical signals. In order to realize the reception of optical signals, the light exit of the light emitting device 6 corresponds to the light entrance of the optical fiber adapter 2, and the light emitted by the light emitting device 6 enters the optical fiber adapter 2 through the light entrance and is emitted.

由于光发射器件6和光接收器件8封装在同一个腔体内，光纤适配器2与光发射器件6对应设置，来自光纤适配器2的光信号会先在光发射腔101内传播，而光接收器件8位于光发射器件6的一侧，光纤适配器2的出光口与光接收器件8的入光口无法对应，使得来自光纤适配器2的光信号无法被光接收器件8接收到。因此，为使光接收器件8能够接收到来自光纤适配器2的光信号，需要将光发射腔101内的光信号反射进光接收腔102，进而被光接收器件8接收。Since the light emitting device 6 and the light receiving device 8 are packaged in the same cavity, the optical fiber adapter 2 and the light emitting device 6 are arranged correspondingly, the optical signal from the optical fiber adapter 2 will first propagate in the light emitting cavity 101, and the light receiving device 8 is located On one side of the light emitting device 6, the light exit port of the optical fiber adapter 2 and the light entrance port of the light receiving device 8 cannot correspond to each other, so that the optical signal from the optical fiber adapter 2 cannot be received by the light receiving device 8. Therefore, in order for the light receiving device 8 to receive the optical signal from the optical fiber adapter 2, the optical signal in the light emitting cavity 101 needs to be reflected into the light receiving cavity 102 and then received by the light receiving device 8.

而为避免光发射器件6和光接收器件8之间产生热串扰，在光发射器件6和光接收器件8之间设有隔热板5。那么在将光发射腔101内的光信号反射进光接收腔102内时，需要该光信号穿过隔热板5，因此，本实施例提供的光模块，在隔热板5上设有光通口51。In order to avoid thermal crosstalk between the light emitting device 6 and the light receiving device 8, a heat shield 5 is provided between the light emitting device 6 and the light receiving device 8. Then, when the light signal in the light emitting cavity 101 is reflected into the light receiving cavity 102, the light signal needs to pass through the heat insulation board 5. Therefore, in the optical module provided in this embodiment, the light signal is provided on the heat insulation board 5. Port 51.

由于光纤适配器2中光纤插芯21朝向光发射器件6，而不朝向光接收器件8，来自光纤适配器2的光信号会先在光发射腔101内传播，为使光接收器件8通过光通口51接收来自光纤适配器2的光信号，如图8所示的光模块的另一角度的结构示意图，在光发射腔101内设有倾斜设置的第一滤波片88，第一滤波片88位于光通口51处，且位于靠近光发射器件6的一侧，第一滤波片88的倾斜方向为沿光纤适配器2至光发射器件6的方向。将第一滤波片88设置在光纤适配器2传过来的光信号的传播路径上，使得来自光纤适配器2的光信号能够照射在倾斜设置的第一滤波片88上，从而产生反射。Since the optical fiber ferrule 21 in the optical fiber adapter 2 faces the light emitting device 6 instead of the light receiving device 8, the optical signal from the optical fiber adapter 2 will first propagate in the light emitting cavity 101, so that the light receiving device 8 can pass through the optical port 51 receives the optical signal from the optical fiber adapter 2, as shown in FIG. 8 is a schematic structural view of the optical module from another angle. In the light emitting cavity 101, a first filter 88 is arranged obliquely, and the first filter 88 is located in the light At the port 51 and on the side close to the light emitting device 6, the inclination direction of the first filter 88 is from the optical fiber adapter 2 to the light emitting device 6. The first filter 88 is arranged on the propagation path of the optical signal transmitted from the optical fiber adapter 2, so that the optical signal from the optical fiber adapter 2 can be irradiated on the first filter 88 arranged obliquely, thereby generating reflection.

来自光纤适配器2的光信号在向光发射器件6的方向传播时，会传播到位于光发射器件6和光纤适配器2之间的第一滤波片88上，在第一滤波片88上产生反射，形成的反射光经过光通口51进入光接收腔102中，并射进光接收器件8内。When the optical signal from the optical fiber adapter 2 propagates in the direction of the light emitting device 6, it will propagate to the first filter 88 located between the light emitting device 6 and the optical fiber adapter 2, and reflect on the first filter 88. The formed reflected light enters the light receiving cavity 102 through the light passage 51 and enters the light receiving device 8.

可见，本申请一些实施例提供的光模块，具有单纤双向的结构特点，由一个光纤适配器2并行实现光信号的发射和接收，即光发射器件6和光接收器件8封装在同一个内壳1内，由同一个光纤适配器2接收光发射器件6发射的光信号，并同时发射光信号被光接收器件8接收，实现光电信号的转换，提高耦合效果。It can be seen that the optical module provided by some embodiments of the present application has a single-fiber bidirectional structure. A fiber optic adapter 2 implements the transmission and reception of optical signals in parallel, that is, the light emitting device 6 and the light receiving device 8 are encapsulated in the same inner housing 1. Inside, the same optical fiber adapter 2 receives the optical signal emitted by the light emitting device 6, and at the same time the emitted optical signal is received by the light receiving device 8, to realize the conversion of the photoelectric signal and improve the coupling effect.

为进一步说明本申请实施例提供的光模块的结构特点和所能取得的有益效果，按照光信号的传播路径，以光发射腔101和光接收腔102进行分别的介绍。In order to further illustrate the structural characteristics and the beneficial effects of the optical module provided by the embodiments of the present application, according to the propagation path of the optical signal, the light emitting cavity 101 and the light receiving cavity 102 are respectively introduced.

图9为本申请实施例提供的光发射腔的内部结构示意图；图10为本申请实施例提供的光发射腔的另一角度的内部结构示意图。FIG. 9 is a schematic diagram of the internal structure of the light emitting cavity provided by an embodiment of the application; FIG. 10 is a schematic diagram of the internal structure of the light emitting cavity provided by an embodiment of the application from another angle.

参见图9和图10，本申请实施例提供的光模块，在光发射腔101内，光发射器件6包括激光芯片61、会聚透镜63、光隔离器64和一体化平台65。激光芯片61用于根据电信号发出光信号；会聚透镜63用于将分散的光信号会聚成平行光，避免长距离传输时出现光损耗；光隔离器64是允许光向一个方向通过而阻止向相反方向通过的无源器件，用于对光的传播方向进行限制，使光只能单方向传输，通过光纤回波反射的光能够被光隔离器64很好的隔离，提高光波传输效率；一体化平台65作为固定底座，用于固定其他光发射器件，如光隔离器64、聚焦透镜80和第一滤波片88等，以调整光发射器件的高度，使得光发射器件6的出光口能够与光纤适配器2的入光口对应，提高光耦合效果。Referring to FIGS. 9 and 10, in the optical module provided by the embodiment of the present application, in the light emitting cavity 101, the light emitting device 6 includes a laser chip 61, a condensing lens 63, an optical isolator 64 and an integrated platform 65. The laser chip 61 is used to send out optical signals according to electrical signals; the condensing lens 63 is used to converge the scattered optical signals into parallel light to avoid optical loss during long-distance transmission; the optical isolator 64 allows light to pass in one direction while preventing Passive components passing in the opposite direction are used to limit the propagation direction of light so that the light can only be transmitted in a single direction. The light reflected by the optical fiber echo can be well isolated by the optical isolator 64, which improves the efficiency of light wave transmission; The chemical platform 65 is used as a fixed base for fixing other light emitting devices, such as the optical isolator 64, the focusing lens 80 and the first filter 88, etc., to adjust the height of the light emitting device so that the light exit of the light emitting device 6 can be in contact with The optical input port of the fiber optic adapter 2 corresponds to the optical coupling effect.

在光发射腔101内，光信号的传播路径为激光芯片61产生光信号，进入光纤适配器2的光纤插芯21内后射出。由于激光芯片61产生的光信号为偏振光，为避免长距离传输时产生光损耗，在光信号的发出方向上设置会聚透镜63，由会聚透镜63将激光芯片61发出的光信号变为平行光，继续向光纤适配器2的方向传播。In the light emitting cavity 101, the propagation path of the optical signal is for the laser chip 61 to generate the optical signal, which enters the optical fiber ferrule 21 of the optical fiber adapter 2 and is emitted. Since the optical signal generated by the laser chip 61 is polarized light, in order to avoid light loss during long-distance transmission, a condensing lens 63 is arranged in the direction of the optical signal. The condensing lens 63 converts the optical signal from the laser chip 61 into parallel light. , Continue to propagate in the direction of the fiber optic adapter 2.

而为避免光信号在进入光纤插芯21后有部分光再反射回来，并按照原传播路径进入激光芯片61，影响激光芯片61的性能，本实施例中，在会聚透镜63和光纤适配器2之间设置光隔离器64，会聚透镜63设于激光芯片61和光隔离器64之间。光信号进入光隔离器64后，在光的偏振方向发生旋转后再射出，射出的光信号进入光纤适配器2的光纤插芯21内。In order to prevent the optical signal from being reflected back after entering the optical fiber ferrule 21, and entering the laser chip 61 according to the original propagation path, the performance of the laser chip 61 is affected. In this embodiment, between the condensing lens 63 and the optical fiber adapter 2 An optical isolator 64 is provided between, and the condensing lens 63 is provided between the laser chip 61 and the optical isolator 64. After the optical signal enters the optical isolator 64, it is emitted after the polarization direction of the light is rotated, and the emitted optical signal enters the optical fiber ferrule 21 of the optical fiber adapter 2.

如果光信号在光纤插芯21处产生反射，反射光沿原传播路径再次照射到光隔离器64的出光口，但由于光信号的偏振方向发生改变，反射光已无法再按照原传播路径进入光隔离器64内，因此，可以避免反射光再次通过光隔离器64进入激光芯片61中，避免影响激光芯片61的发光性能。If the optical signal is reflected at the optical fiber ferrule 21, the reflected light illuminates the light exit of the optical isolator 64 again along the original propagation path, but due to the change of the polarization direction of the optical signal, the reflected light can no longer enter the light along the original propagation path. In the isolator 64, therefore, it is possible to prevent the reflected light from entering the laser chip 61 through the optical isolator 64 again, and to avoid affecting the light-emitting performance of the laser chip 61.

为精准调整光发射器件的在光路传输上的高度，使得光发射器件的出光口与光纤适配器2的入光口对应，本实施例中，将光隔离器64固定在一体化平台65的侧壁上，一体化平台65内设有与光隔离器64的出光口连通的通光路径，一体化平台65中通光路径的出光口与光纤适配器2的入光口对应。通光路径用于实现经过光隔离器64的光信号的传播，由通光路径射出的光信号即可进入光纤适配器中。In order to precisely adjust the height of the light emitting device on the optical path transmission, so that the light exit port of the light emitting device corresponds to the light entrance port of the optical fiber adapter 2, in this embodiment, the optical isolator 64 is fixed on the side wall of the integrated platform 65 Above, the integrated platform 65 is provided with a light path communicating with the light exit port of the optical isolator 64, and the light exit port of the light path in the integrated platform 65 corresponds to the light entrance port of the optical fiber adapter 2. The optical path is used to realize the propagation of the optical signal through the optical isolator 64, and the optical signal emitted from the optical path can enter the optical fiber adapter.

因此，在光发射腔101内，如图10中的虚线箭头所示路径，光信号的传播路径为：激光芯片61发出的光经过会聚透镜63会聚后，形成的平行光经过光隔离器64进入通光路径后射出，形成的出射光进入光纤适配器2中的光纤插芯21后射出。Therefore, in the light emitting cavity 101, as shown by the dashed arrow in FIG. 10, the propagation path of the optical signal is: after the light emitted by the laser chip 61 is condensed by the condensing lens 63, the formed parallel light enters through the optical isolator 64 After passing the light path, it is emitted, and the formed emitted light enters the optical fiber ferrule 21 in the optical fiber adapter 2 and then is emitted.

本实施例中，光隔离器64由一体化平台65进行固定，而激光芯片61和会聚透镜63则由第一陶瓷基板60进行固定。为此，光发射器件6还包括第一陶瓷基板60，以及，设在第一陶瓷基板60上的第一导电金属层62和光探测器66。一体化平台65用于调整光隔离器64的在光路传输上的高度，第一陶瓷基板60用于调整激光芯片61和会聚透镜63的在光路传输上的高度，使二者的光轴重合，并与光隔离器64的光轴和光纤适配器2中光纤插芯21的光轴重合，提高光耦合效果。In this embodiment, the optical isolator 64 is fixed by the integrated platform 65, and the laser chip 61 and the condensing lens 63 are fixed by the first ceramic substrate 60. To this end, the light emitting device 6 further includes a first ceramic substrate 60, and a first conductive metal layer 62 and a photodetector 66 provided on the first ceramic substrate 60. The integrated platform 65 is used to adjust the height of the optical isolator 64 in the optical path transmission, and the first ceramic substrate 60 is used to adjust the height of the laser chip 61 and the condensing lens 63 in the optical path transmission so that the optical axes of the two coincide, It coincides with the optical axis of the optical isolator 64 and the optical axis of the optical fiber ferrule 21 in the optical fiber adapter 2 to improve the optical coupling effect.

第一陶瓷基板60的表面涂覆有第一导电金属层62，激光芯片61设置在第一导电金属层62上，激光芯片61与第一导电金属层62的正极打线连接，第一导电金属层62用于向激光芯片61传递电信号。第一陶瓷基板60通过第一导电金属层62与第一柔性电路板3连接，第一导电金属层62的电信号则由第一柔性电路板3提供。The surface of the first ceramic substrate 60 is coated with a first conductive metal layer 62. The laser chip 61 is arranged on the first conductive metal layer 62. The laser chip 61 is connected to the anode of the first conductive metal layer 62 by wire bonding. The layer 62 is used to transmit electrical signals to the laser chip 61. The first ceramic substrate 60 is connected to the first flexible circuit board 3 through the first conductive metal layer 62, and the electrical signal of the first conductive metal layer 62 is provided by the first flexible circuit board 3.

光探测器66位于激光芯片61的后方，光纤适配器2位于激光芯片61的前方，光探测器66的光感面与激光芯片61的向后发射光信号的出光口对应。激光芯片61发出的光信号中，其中大功率光信号朝向光纤适配器2的方向传播(向前传播)，而小功率光信号并向光探测器66的方向传播(向后传播)。The light detector 66 is located behind the laser chip 61, the optical fiber adapter 2 is located in front of the laser chip 61, and the light sensing surface of the light detector 66 corresponds to the light exit port of the laser chip 61 that emits light signals backward. Among the optical signals emitted by the laser chip 61, the high-power optical signals propagate in the direction of the optical fiber adapter 2 (forward propagation), and the low-power optical signals propagate in the direction of the photodetector 66 (backward propagation).

激光芯片61发出的小功率光信号被光探测器66接收，光探测器66用于对激光芯片61发出的小功率光信号进行功率监控。进入光探测器66的光功率一般远小于激光芯片61发射的光波总功率，通常设定进入光探测器66内进行功率检测的功率为总功率的1/10。The low-power optical signal emitted by the laser chip 61 is received by the optical detector 66, and the optical detector 66 is used for power monitoring of the low-power optical signal emitted by the laser chip 61. The power of the light entering the photodetector 66 is generally much smaller than the total power of the light waves emitted by the laser chip 61, and the power entering the photodetector 66 for power detection is usually set to 1/10 of the total power.

上述实施例主要介绍了在光发射腔101内光信号的传播路径，在光发射腔101内，激光芯片61固定在第一陶瓷基板60上，会聚透镜63位于激光芯片61的出光传播路径上，光隔离器64固定在一体化平台65上，可以实现激光芯片61、会聚透镜63和光隔离器64的高度精准调节，使得激光芯片61的出光口与会聚透镜63的入光口对应，会聚透镜63的出光口与光隔离器64的入光口对应，光隔离器64的出光口与光纤适配器2的入光口对应，激光芯片61发出的光信号能够被光纤适配器2全部接收，以保证光耦合效果。The above embodiment mainly introduces the propagation path of the optical signal in the light emitting cavity 101. In the light emitting cavity 101, the laser chip 61 is fixed on the first ceramic substrate 60, and the condensing lens 63 is located on the light propagation path of the laser chip 61. The optical isolator 64 is fixed on the integrated platform 65, and the height of the laser chip 61, the condensing lens 63 and the optical isolator 64 can be precisely adjusted, so that the light exit of the laser chip 61 corresponds to the light entrance of the condensing lens 63, and the condensing lens 63 The optical output port of the optical isolator 64 corresponds to the optical input port of the optical isolator 64, and the optical output port of the optical isolator 64 corresponds to the optical input port of the optical fiber adapter 2. The optical signal emitted by the laser chip 61 can be all received by the optical fiber adapter 2 to ensure optical coupling effect.

在光接收腔102内，光接收器件8在接收来自光纤适配器2的光信号时，需要将在光发射腔101内传播的光信号反射进光接收腔102内。为此，本实施例中，采用设置倾斜的第一滤波片88的方式将光信号反射进光接收腔102内。In the light receiving cavity 102, when the light receiving device 8 receives the optical signal from the optical fiber adapter 2, it needs to reflect the optical signal propagating in the light emitting cavity 101 into the light receiving cavity 102. For this reason, in this embodiment, the optical signal is reflected into the light receiving cavity 102 by setting the inclined first filter 88.

图11为本申请实施例提供的光接收腔的内部结构示意图，参见图11，为调整第一滤波片88的在在光路传输上的高度，以保证光信号反射的效率，在一些实施方式中，在一体化平台65的出光口设有出光斜面650，出光斜面650为倾斜设置的表面，沿光纤适配器2到光发射器件6的方向倾斜。将第一滤波片88设置在出光斜面650上，以保证来自光纤适配器2的光信号，在照射到第一滤波片88后能够产生反射，且反射方向朝向光接收腔102。FIG. 11 is a schematic diagram of the internal structure of the light receiving cavity provided by an embodiment of the application. Referring to FIG. 11, in order to adjust the height of the first filter 88 on the optical path transmission to ensure the efficiency of optical signal reflection, in some embodiments The light exit sloping surface 650 is provided at the light exit of the integrated platform 65. The light exit sloping surface 650 is an inclined surface, which is inclined along the direction from the optical fiber adapter 2 to the light emitting device 6. The first filter 88 is arranged on the light exit slope 650 to ensure that the optical signal from the optical fiber adapter 2 can be reflected after being irradiated on the first filter 88 and the reflection direction is toward the light receiving cavity 102.

来自光纤适配器2的光信号为发散光，为提高光耦合效率，避免出现光损耗，在一些实施方式中，在第一滤波片88和光纤适配器2之间设有聚焦透镜80。来自光纤适配器2的光信号经过聚焦透镜80后照射在第一滤波片88上并发生反射，形成的反射光经过光通口51进入光接收腔102中，并射进光接收器件8内。The optical signal from the optical fiber adapter 2 is divergent light. In order to improve the optical coupling efficiency and avoid light loss, in some embodiments, a focusing lens 80 is provided between the first filter 88 and the optical fiber adapter 2. The optical signal from the optical fiber adapter 2 is irradiated on the first filter 88 after passing through the focusing lens 80 and is reflected. The formed reflected light enters the light receiving cavity 102 through the light passage 51 and enters the light receiving device 8.

聚焦透镜80设置在一体化平台65和光纤适配器2之间，且一体化平台65 的出光口位于出光斜面650上，此时，在一体化平台65和光纤适配器2之间的区域内，光纤适配器2接收光信号的路径与传出光信号的路径重合，那么使得光纤适配器2接收激光芯片61发射的光信号时，光信号也会穿过聚焦透镜80，光信号经过聚焦透镜80后形成平行光，再射进光纤适配器2内。The focusing lens 80 is set between the integrated platform 65 and the optical fiber adapter 2, and the light outlet of the integrated platform 65 is located on the light exit slope 650. At this time, in the area between the integrated platform 65 and the optical fiber adapter 2, the optical fiber adapter 2 The path of receiving the optical signal coincides with the path of the outgoing optical signal, so that when the optical fiber adapter 2 receives the optical signal emitted by the laser chip 61, the optical signal will also pass through the focusing lens 80, and the optical signal will form parallel light after passing through the focusing lens 80. , And then shoot into the fiber optic adapter 2.

来自光纤适配器2的光信号经过聚焦透镜80进行会聚后继续向一体化平台65的方向传播，进而照射在第一滤波片88上，经过第一滤波片88的反射后沿隔热板5上的光通口51进入光接收腔102内。The optical signal from the optical fiber adapter 2 is condensed by the focusing lens 80 and then continues to propagate in the direction of the integrated platform 65, and then irradiates on the first filter 88. After being reflected by the first filter 88, it travels along the heat shield 5 The light passage 51 enters the light receiving cavity 102.

光接收腔102内设有光接收器件8，为接收由光发射腔101反射进光接收腔102内的光信号，在一些实施方式中，光接收器件8包括光路改变平台81。光路改变平台81用于实现光信号的接收和改变传播路径方向。A light receiving device 8 is provided in the light receiving cavity 102 to receive the light signal reflected from the light emitting cavity 101 into the light receiving cavity 102. In some embodiments, the light receiving device 8 includes a light path changing platform 81. The optical path changing platform 81 is used for receiving optical signals and changing the direction of the propagation path.

为接收第一滤波片88反射过来的光信号，光路改变平台81内设有变光路径，变光路径的入光口与光通口51对应，由光发射腔101经过光通口51反射过来的光信号进入变光路径中传播。光接收腔102内的光接收器件8沿光接收腔102的长度方向设置，而进入光接收腔102的光信号的传播方向则为垂直于光接收腔102的长度方向，因此，进入变光路径的光信号需要改变传播方向以进入光接收器件8中。In order to receive the light signal reflected by the first filter 88, the light path changing platform 81 is provided with a variable light path, and the light entrance of the variable light path corresponds to the light port 51, which is reflected from the light emitting cavity 101 through the light port 51 The optical signal enters the variable light path and propagates. The light receiving device 8 in the light receiving cavity 102 is arranged along the length direction of the light receiving cavity 102, and the propagation direction of the optical signal entering the light receiving cavity 102 is perpendicular to the length direction of the light receiving cavity 102, therefore, enters the variable light path The optical signal needs to change the propagation direction to enter the light receiving device 8.

在一些实施例中，在光路改变平台81的变光面810上设有反射片82，变光面810为光路改变平台81的倾斜设置的一个面，变光面810与光通口51对应。变光面810的倾斜方向为沿光纤适配器2至光接收器件8的方向。在变光面810上设置反射片82，使得在变光路径中传播的光信号在照射在反射片82后产生反射，并沿光接收腔102的长度方向传播。In some embodiments, a reflective sheet 82 is provided on the light-changing surface 810 of the light path changing platform 81, the light-changing surface 810 is a surface of the light path changing platform 81 that is arranged obliquely, and the light-changing surface 810 corresponds to the light passage 51. The inclination direction of the light-changing surface 810 is the direction along the optical fiber adapter 2 to the light receiving device 8. A reflective sheet 82 is provided on the light-changing surface 810, so that the light signal propagating in the light-changing path is reflected after being irradiated on the reflective sheet 82, and travels along the length direction of the light receiving cavity 102.

图12为本申请一些实施例提供的光模块的局部俯视图；图13为本申请一些实施例提供的三角棱镜和第三滤波片的结构示意图。Fig. 12 is a partial top view of an optical module provided by some embodiments of the application; Fig. 13 is a schematic structural diagram of a triangular prism and a third filter provided by some embodiments of the application.

参见图12和图13，为减少光信号传播路径转折过程中产生反射光影响信号传输，降低光回损，本实施例中，不再采用光路改变平台81，而是作为替换的，在反射片和第一滤波片之间还设有三角棱镜654和第三滤波片655，三角棱镜654和第三滤波片655均位于光接收腔102内，三角棱镜654实现光信号的反射以改变传播路径，第三滤波片655实现特定波长光信号的筛选。Referring to Figures 12 and 13, in order to reduce the effect of reflected light on signal transmission during the turning process of the optical signal propagation path and reduce the optical return loss, in this embodiment, the optical path change platform 81 is no longer used, but instead, the reflective sheet A triangular prism 654 and a third filter 655 are also arranged between the first filter and the triangular prism 654 and the third filter 655. The triangular prism 654 and the third filter 655 are both located in the light receiving cavity 102. The triangular prism 654 realizes the reflection of the optical signal to change the propagation path, The third filter 655 implements filtering of optical signals of a specific wavelength.

为使特定波长的光信号进入光接收芯片85内，在来自光纤适配器2的光信号传播进光接收腔102内时，由第三滤波片655实现光信号的筛选。第三滤波片655设置在靠近光通口51的位置，第三滤波片655的入光面S3朝向光通口51，且第三滤波片655与来自第一滤波片88的光信号传播路径垂直，使得经第一滤波片88反射的光信号能够穿过第三滤波片655。In order to make the optical signal of a specific wavelength enter the light receiving chip 85, when the optical signal from the optical fiber adapter 2 propagates into the light receiving cavity 102, the third filter 655 implements the filtering of the optical signal. The third filter 655 is arranged at a position close to the light passage 51, the light incident surface S3 of the third filter 655 faces the light passage 51, and the third filter 655 is perpendicular to the propagation path of the optical signal from the first filter 88 , So that the light signal reflected by the first filter 88 can pass through the third filter 655.

第三滤波片655设置在三角棱镜654的入光面S3上，使得第三滤波片655的出光面S2与三角棱镜654的入光面S3重合，来自第一滤波片88的光信号经第三滤波片655进入三角棱镜654中。而在其他实施例中，第三滤波片655的出光面S2与三角棱镜654的入光面S3也可不重合设置，此时，需要在第三滤波片655的出光面S2与三角棱镜654的入光面S3均镀膜。The third filter 655 is disposed on the light incident surface S3 of the triangular prism 654, so that the light exit surface S2 of the third filter 655 coincides with the light incident surface S3 of the triangular prism 654, and the light signal from the first filter 88 passes through the third The filter 655 enters the triangular prism 654. In other embodiments, the light-emitting surface S2 of the third filter 655 and the light-incident surface S3 of the triangular prism 654 may not overlap. In this case, it is necessary to set the light-emitting surface S2 of the third filter 655 and the light-incident surface S3 of the triangular prism 654. The glossy S3 is coated.

三角棱镜654可选截面为等腰直角三角形的棱镜，三角棱镜654的一条直角边为入光面S3，另一条直角边为出光面S5，斜边为实现光信号反射的斜面S4，三角棱镜654的斜面S4上形成反射片或者将反射片82贴附在三角棱镜654的斜面S4上。The triangular prism 654 can be an isosceles right-angled triangle prism. One right-angle side of the triangular prism 654 is the light-incident surface S3, the other right-angle side is the light-emitting surface S5, and the hypotenuse is the inclined surface S4 for realizing light signal reflection. The triangular prism 654 A reflection sheet is formed on the inclined surface S4 of the prism or the reflection sheet 82 is attached to the inclined surface S4 of the triangular prism 654.

三角棱镜654的入光面S3朝向第一滤波片88，三角棱镜654的出光面S5朝向光接收芯片85，使得进入三角棱镜654的光信号在传播到斜面S4上的反射片82后发生反射，反射光朝向出光面S5射出并进入光接收芯片85。The light incident surface S3 of the triangular prism 654 faces the first filter 88, and the light output surface S5 of the triangular prism 654 faces the light receiving chip 85, so that the light signal entering the triangular prism 654 is reflected after propagating to the reflective sheet 82 on the inclined surface S4. The reflected light exits toward the light exit surface S5 and enters the light receiving chip 85.

因此，参见图14中箭头所示的路径，在三角棱镜654和第三滤波片655处的光信号传播路径为：来自光纤适配器2的光信号在第一滤波片88产生反射，经光通口51反射进第三滤波片655，经过第三滤波片655滤波后的光信号由入光面S3进入三角棱镜654，在三角棱镜654的斜面S4上的反射片82处产生反射，反射光由出光面S5射出三角棱镜654，向光接收芯片85的方向传播。Therefore, referring to the path shown by the arrow in FIG. 14, the optical signal propagation path at the triangular prism 654 and the third filter 655 is: the optical signal from the optical fiber adapter 2 is reflected on the first filter 88 and passes through the optical port 51 is reflected into the third filter 655, the light signal filtered by the third filter 655 enters the triangular prism 654 from the light incident surface S3, and is reflected at the reflective sheet 82 on the slope S4 of the triangular prism 654, and the reflected light is emitted by the light The triangular prism 654 is emitted from the surface S5 and propagates in the direction of the light receiving chip 85.

为保证经过光路改变平台81改变传播方向的光信号为平行光，避免长距离传输时出现光损耗，在光路改变平台81的出光口处设有第二滤波片83，第二滤波片83的出光口处设有反射面84，反射面84的出光口处设有光接收芯片85。第二滤波片允许特定波长的光通过，可以通过第二滤波片的光波长会随着第二滤波片的温度变化而变化。反射面84将经过第二滤波片83滤光处理后的光信号接收，并向位于反射面84下方的光接收芯片85产生反射，由光接收芯片85接收光信号。In order to ensure that the optical signal changing the propagation direction of the optical path changing platform 81 is parallel light and avoid light loss during long-distance transmission, a second filter 83 is provided at the light exit of the optical path changing platform 81, and the second filter 83 emits light. A reflective surface 84 is provided at the port, and a light receiving chip 85 is provided at the light exit port of the reflective surface 84. The second filter allows light of a specific wavelength to pass, and the wavelength of the light that can pass through the second filter changes with the temperature of the second filter. The reflective surface 84 receives the light signal filtered by the second filter 83 and reflects it to the light receiving chip 85 located below the reflective surface 84, and the light receiving chip 85 receives the light signal.

如图15所示的反射面的结构示意图，图中虚线箭头所示为反射面内光信号传播路径。本申请实施例提供的反射面84用于改变光信号的传播路径。光信号由光纤适配器2发出时具有一定的高度，而光接收芯片85的光敏面朝上，即来自光纤适配器2的光信号传播路径与光接收芯片85的光接收路径不一致，为了便于光接收芯片85接收到光信号，需要利用反射面84将较高传播的光信号向下反射进光接收芯片85内。As shown in the schematic diagram of the structure of the reflective surface as shown in FIG. 15, the dotted arrow in the figure shows the optical signal propagation path in the reflective surface. The reflective surface 84 provided in the embodiment of the present application is used to change the propagation path of the optical signal. The optical signal has a certain height when sent by the optical fiber adapter 2, and the photosensitive surface of the light receiving chip 85 faces upward, that is, the propagation path of the optical signal from the optical fiber adapter 2 is inconsistent with the light receiving path of the light receiving chip 85, in order to facilitate the light receiving chip When the light signal 85 is received, the reflecting surface 84 needs to be used to reflect the higher-propagating light signal downward into the light receiving chip 85.

其中，反射面84包括入光面841、反射斜面842和出光底面843。入光面841朝向第二滤波片83，用于接收经过第二滤波片83的光信号。反射斜面842设置在光信号传播路径上，且倾斜设置，使得由入光面841射进的光信号在照射在反射斜面842后可以向下反射。出光底面843设置在反射路径上，且出光底面843上设有透镜844，由透镜844对反射光进行会聚。The reflective surface 84 includes a light incident surface 841, a reflective inclined surface 842, and a light emitting bottom surface 843. The light incident surface 841 faces the second filter 83 and is used for receiving the light signal passing through the second filter 83. The reflective inclined surface 842 is arranged on the optical signal propagation path, and is arranged obliquely, so that the optical signal incident from the light incident surface 841 can be reflected downward after being irradiated on the reflective inclined surface 842. The light emitting bottom surface 843 is arranged on the reflection path, and the light emitting bottom surface 843 is provided with a lens 844, and the reflected light is condensed by the lens 844.

光接收芯片85位于出光底面843的下方，光接收芯片85的光敏面与透镜844的出光口对应，使得光接收芯片85可以接收由反射面84传播来的光信号。The light receiving chip 85 is located below the light emitting bottom surface 843, and the photosensitive surface of the light receiving chip 85 corresponds to the light output port of the lens 844, so that the light receiving chip 85 can receive the light signal propagated by the reflective surface 84.

光接收芯片85在接收光信号时，需要借助TEC组件通过控温的方式筛选出不同波长的光信号。因此，如图16所示的光接收腔的光器件结构示意图和图17所示的光接收腔的分解结构示意图，本实施例提供的光模块中，在光接收腔102内设置第二TEC组件9。而需要进行筛选不同波长光信号的元件为第二滤波片83，则由第二TEC组件9对第二滤波片83进行控温以筛选不同波长的光信号。When the optical receiving chip 85 receives optical signals, it needs to use the TEC component to filter out optical signals of different wavelengths by means of temperature control. Therefore, as shown in the schematic diagram of the optical device structure of the light receiving cavity shown in FIG. 16 and the schematic diagram of the exploded structure of the light receiving cavity shown in FIG. 17, in the optical module provided in this embodiment, a second TEC assembly is provided in the light receiving cavity 102 9. The component that needs to filter optical signals of different wavelengths is the second filter 83, and the second TEC component 9 controls the temperature of the second filter 83 to filter optical signals of different wavelengths.

为保证光的耦合效果，在由第二TEC组件9实现制冷第二滤波片83时吸收热量的散热时，还可利用第二TEC组件9对第二滤波片83进行固定，以调整第二滤波片83在光路传输上的高度，保证光接收腔102中的各个光器件的入光轴能够重合，即光路改变平台81的出光口与第二滤波片83的入光口对应，第二滤波片83的出光口与反射面84的入光口对应，以提高光接收光信号的光耦合效果。In order to ensure the coupling effect of light, when the second TEC component 9 is used to cool the second filter 83 to absorb heat and dissipate heat, the second TEC component 9 can also be used to fix the second filter 83 to adjust the second filter. The height of the plate 83 on the optical path transmission ensures that the light incident axes of the optical components in the light receiving cavity 102 can be overlapped, that is, the light exit port of the light path changing platform 81 corresponds to the light entrance port of the second filter 83, and the second filter The light exit port of 83 corresponds to the light entrance port of the reflective surface 84 to improve the optical coupling effect of the light receiving optical signal.

为保证第二滤波片83对水平方向传播的光信号进行不同波长的筛选，将第二滤波片83进行竖直设置，即第二滤波片83垂直于内壳1的底板11，且与光信号的传输路径垂直。为便于第二TEC组件9调节第二滤波片83的温度，以通过控温的方式筛选不同波长的光信号，因此，将第二滤波片83设置在第二TEC组件9的侧壁上，进而需要第二TEC组件9也竖直设置，即侧立在光接收腔102内，与底板11垂直。In order to ensure that the second filter 83 filters different wavelengths of the optical signals propagating in the horizontal direction, the second filter 83 is arranged vertically, that is, the second filter 83 is perpendicular to the bottom plate 11 of the inner housing 1 and is connected to the optical signal. The transmission path is vertical. In order to facilitate the second TEC component 9 to adjust the temperature of the second filter 83 to filter the optical signals of different wavelengths by temperature control, the second filter 83 is arranged on the side wall of the second TEC component 9, and then It is necessary that the second TEC component 9 is also vertically arranged, that is, it stands on the side in the light receiving cavity 102 and is perpendicular to the bottom plate 11.

由于第二TEC组件9设置在光路改变平台81和第二滤波片83之间，也就是说，光路改变平台81射出的光信号需要先经过第二TEC组件9后再进入第二滤波片83，为避免第二TEC组件9对光信号产生损耗，本实施例中，在第二TEC组件9上设有通光孔，通光孔与光路改变平台81的出光口相对，第二滤波片83贴附在通光孔上。Since the second TEC component 9 is arranged between the light path changing platform 81 and the second filter 83, that is, the light signal emitted by the light path changing platform 81 needs to pass through the second TEC component 9 before entering the second filter 83. In order to avoid the loss of the optical signal by the second TEC component 9, in this embodiment, the second TEC component 9 is provided with a light-through hole, which is opposite to the light outlet of the light path changing platform 81, and the second filter 83 is attached Attached to the light hole.

如图18所示的光接收腔的局部侧视图，第二滤波片83设置在光信号传播路径上，第二滤波片83垂直于内壳1的底板11，且垂直于内壳1的侧壁12，使得光信号能够穿过第二滤波片83。第二滤波片83的出光口处设有反射棱镜组件84，反射棱镜组件84的出光口处设有光接收芯片85。反射棱镜组件84将经过第二滤波片83滤光处理后的光信号接收，并向位于反射棱镜组件84下方的光接收芯片85产生反射，由光接收芯片85接收光信号。As shown in FIG. 18, a partial side view of the light receiving cavity, the second filter 83 is arranged on the optical signal propagation path, and the second filter 83 is perpendicular to the bottom plate 11 of the inner housing 1 and perpendicular to the side walls of the inner housing 1. 12, so that the optical signal can pass through the second filter 83. The light exit of the second filter 83 is provided with a reflective prism component 84, and the light exit of the reflective prism component 84 is provided with a light receiving chip 85. The reflective prism component 84 receives the optical signal filtered by the second filter 83 and reflects it to the light receiving chip 85 located under the reflective prism component 84, and the light receiving chip 85 receives the optical signal.

如图19所示的反射棱镜组件的结构示意图，图中虚线箭头所示为反射棱镜组件内光信号传播路径。本申请实施例提供的反射棱镜组件84用于改变光信号的传播路径。光信号由光纤适配器2发出时具有一定的高度，而光接收芯片85的光敏面朝上，即来自光纤适配器2的光信号传播路径与光接收芯片85的光接收路径不一致，为了便于光接收芯片85接收到光信号，需要利用反射棱镜组件84将较高传播的光信号向下反射进光接收芯片85内。As shown in FIG. 19, the structure of the reflective prism assembly is schematic, and the dotted arrow in the figure shows the optical signal propagation path in the reflective prism assembly. The reflective prism component 84 provided by the embodiment of the present application is used to change the propagation path of the optical signal. The optical signal has a certain height when sent by the optical fiber adapter 2, and the photosensitive surface of the light receiving chip 85 faces upward, that is, the propagation path of the optical signal from the optical fiber adapter 2 is inconsistent with the light receiving path of the light receiving chip 85, in order to facilitate the light receiving chip When the light signal 85 is received, the reflecting prism component 84 needs to be used to reflect the higher propagating light signal downward into the light receiving chip 85.

其中，反射棱镜组件84包括入光面841、反射斜面842和出光底面843。入光面841朝向第二滤波片83，用于接收经过第二滤波片83的光信号。反射斜面842设置在光信号传播路径上，且倾斜设置，使得由入光面841射进的光信号在传播在反射斜面842后可以向下反射。出光底面843设置在反射路径上，且出光底面843上设有第二会聚透镜844，由第二会聚透镜844对反射光进行会聚。The reflective prism component 84 includes a light incident surface 841, a reflective inclined surface 842, and a light emitting bottom surface 843. The light incident surface 841 faces the second filter 83 and is used for receiving the light signal passing through the second filter 83. The reflective inclined surface 842 is arranged on the optical signal propagation path, and is arranged obliquely, so that the optical signal incident from the light incident surface 841 can be reflected downward after propagating on the reflective inclined surface 842. The light-emitting bottom surface 843 is arranged on the reflection path, and the light-emitting bottom surface 843 is provided with a second condensing lens 844, and the second condensing lens 844 condenses the reflected light.

由于透过第二滤波片83的光信号需要经过一段空气再进入反射棱镜组件84内，而光信号在空气介质中传播并射到反射棱镜组件84的入光面841时，在入光面841易产生反射，使得反射光沿与光信号的原传播路径相反的方向传播，出现光回损，使得光接收芯片85的光耦合效果不好。Since the optical signal passing through the second filter 83 needs to pass through a section of air and then enter the reflecting prism assembly 84, and when the optical signal propagates in the air medium and hits the light incident surface 841 of the reflecting prism assembly 84, it will be on the light incident surface 841. It is easy to cause reflection, so that the reflected light propagates in a direction opposite to the original propagation path of the optical signal, and optical return loss occurs, which makes the optical coupling effect of the light receiving chip 85 poor.

因此，为降低入光面841带来的光回损，本实施例提供的光模块，将入光面841倾斜设置，使得反射棱镜组件84的入光面41与光信号的传播方向呈非垂直角度，即入光面841与光信号的传播路径之间的角度呈锐角或钝角，非垂直角度可以降低接收光回损。Therefore, in order to reduce the light return loss caused by the light incident surface 841, the optical module provided in this embodiment has the light incident surface 841 obliquely arranged, so that the light incident surface 41 of the reflective prism assembly 84 is non-vertical to the propagation direction of the optical signal. The angle, that is, the angle between the light incident surface 841 and the propagation path of the optical signal is an acute or obtuse angle, and a non-vertical angle can reduce the received light return loss.

而为使经过入光面841射进反射棱镜组件84的光信号能够沿原传播路径偏下的位置传播，需反射棱镜组件84的入光面841沿底端到顶端的方向倾斜，倾斜方向与光信号的传播方向相同。为保证光信号的耦合效果，本实施例中，入光面841与出光底面843光信号的传播路径之间的夹角范围为30-135度(不包括90度)。In order to enable the light signal entering the reflective prism assembly 84 through the light incident surface 841 to propagate along the lower position of the original propagation path, the light incident surface 841 of the reflective prism assembly 84 needs to be inclined in the direction from the bottom end to the top end, and the inclination direction is the same as The propagation direction of the optical signal is the same. In order to ensure the coupling effect of the optical signal, in this embodiment, the angle between the light incident surface 841 and the light output bottom surface 843 of the propagation path of the optical signal ranges from 30 to 135 degrees (not including 90 degrees).

由于光接收芯片85设置在反射棱镜组件84的下方，光接收芯片85的光敏面朝上，为使光接收芯片85能够接收到反射棱镜组件84传播的光信号，需要反射棱镜组件84将光信号朝下反射。为此，本实施例中，在反射棱镜组件84的末端端面为倾斜的反射斜面842，反射棱镜组件84的出光底面843的下方设置有光接收芯片85。Since the light receiving chip 85 is arranged under the reflective prism assembly 84, the photosensitive surface of the light receiving chip 85 faces upwards. In order for the light receiving chip 85 to receive the light signal propagated by the reflective prism assembly 84, the reflective prism assembly 84 is required to transmit the light signal. Reflect downward. To this end, in this embodiment, the end surface of the reflective prism component 84 is an inclined reflective inclined surface 842, and a light receiving chip 85 is provided under the light emitting bottom surface 843 of the reflective prism component 84.

反射斜面842倾斜设置，使得由入光面841传播来的光信号在传播到反射斜面842后产生反射。而为使反射方向朝下，需要反射斜面842沿底端到顶端的方向倾斜，倾斜方向与光信号的传播方向相反，也就是说，反射斜面842与出光底面843呈锐角连接。本实施例中，为使经过反射斜面842反射后的光信号能够透过出光底面843，保证光信号的耦合效果，设定反射斜面842与出光底面843之间夹角范围为40-70度。The reflective inclined surface 842 is arranged obliquely, so that the light signal propagated from the light incident surface 841 is reflected after propagating to the reflective inclined surface 842. In order to make the reflection direction downward, the reflection slope 842 needs to be inclined from the bottom end to the top end, and the slope direction is opposite to the propagation direction of the optical signal, that is, the reflection slope 842 and the light emitting bottom surface 843 are connected at an acute angle. In this embodiment, in order to allow the light signal reflected by the reflective inclined surface 842 to pass through the light emitting bottom surface 843 and ensure the coupling effect of the optical signals, the angle between the reflective inclined surface 842 and the light emitting bottom surface 843 is set to range from 40 to 70 degrees.

因此，在光接收芯片85接收光信号的传播路径为：来自光纤适配器2的光信号经第一滤波片88反射后射向反射片82，经反射片82反射后射向第二滤波片83，透过第二滤波片83的光信号由入光面841射进反射棱镜组件84，传播到反射斜面842并反射后射向出光出光底面843，以被出光底面843下方的光接收芯片85接收。Therefore, the propagation path of the optical signal received by the light receiving chip 85 is: the optical signal from the optical fiber adapter 2 is reflected by the first filter 88 and then directed toward the reflector 82, and then reflected by the reflector 82 and directed toward the second filter 83, The light signal passing through the second filter 83 enters the reflective prism assembly 84 from the light entrance surface 841, propagates to the reflective inclined surface 842 and is reflected to the light exit bottom surface 843 to be received by the light receiving chip 85 under the light exit bottom surface 843.

为减少光接收芯片85接收光信号的损耗，本实施例中，在反射棱镜组件84的出光底面843设置有第二会聚透镜844，第二会聚透镜844用于将由反射斜面842反射的光信号进行汇聚，使得汇聚光被第二会聚透镜844下方的光接收芯片85接收。In order to reduce the loss of the light signal received by the light receiving chip 85, in this embodiment, a second converging lens 844 is provided on the light emitting bottom surface 843 of the reflective prism assembly 84, and the second converging lens 844 is used to perform the optical signal reflected by the reflective inclined surface 842. Convergence, so that the condensed light is received by the light receiving chip 85 under the second condensing lens 844.

如图20所示的反射棱镜组件的光路传播路径示意图，实线箭头所示路径为来自第二滤波片83的光信号进入反射棱镜组件84并射出的传播路径，虚线箭头所示路径为反射光进入反射棱镜组件84并射出的传播路径。A schematic diagram of the optical path propagation path of the reflective prism assembly shown in FIG. 20, the path shown by the solid arrow is the propagation path of the optical signal from the second filter 83 entering the reflective prism assembly 84 and emitted, and the path shown by the dashed arrow is the reflected light The propagation path that enters and exits the reflective prism assembly 84.

光接收芯片85在接收第二会聚透镜844射出的光信号时，小部分光信号会在光接收芯片85的光敏面产生反射。由于经入光面841射进反射棱镜组件84内的光信号传播路径偏离原传播路径，即向下偏转一定角度后传播到反射斜面842上，使得在反射斜面842上产生的反射光在向下传播时，其传播路径不与第二会聚透镜844的入光面垂直，即实线箭头所示的向下传播的光信号并非垂直入射进光接收芯片85中。When the light receiving chip 85 receives the light signal emitted by the second condensing lens 844, a small part of the light signal will be reflected on the photosensitive surface of the light receiving chip 85. Since the propagation path of the optical signal entering the reflective prism assembly 84 through the light incident surface 841 deviates from the original propagation path, that is, it is deflected downward by a certain angle and then propagated to the reflective inclined surface 842, so that the reflected light generated on the reflective inclined surface 842 is downward. When propagating, the propagation path is not perpendicular to the light incident surface of the second condensing lens 844, that is, the light signal propagating downward as indicated by the solid arrow does not enter the light receiving chip 85 perpendicularly.

鉴于由第二会聚透镜844射进光接收芯片85的光信号并非垂直于光敏面，使得光信号在发生反射时，反射光也不会沿原传播路径再次进入反射棱镜组件 84内，而是沿虚线箭头所示的路径经第二会聚透镜844射入反射棱镜组件84中并继续传播。在由反射棱镜组件84射出的光信号传播路径也不会与原传播路径重合，即出射光与入射光呈一定角度，可以阻止反射光再返回到光纤适配器2的光纤插芯21中，影响信号传输。因此，入光面841倾斜设置，使入光面841与出光底面843呈非垂直角度，减少光接收芯片85接收光回损对光信号传输的影响，进而可以保证光接收芯片85的光耦合效果。In view of the fact that the light signal emitted by the second converging lens 844 into the light receiving chip 85 is not perpendicular to the photosensitive surface, when the light signal is reflected, the reflected light will not enter the reflecting prism assembly 84 again along the original propagation path, but along The path indicated by the dashed arrow enters the reflective prism assembly 84 through the second condensing lens 844 and continues to propagate. The propagation path of the optical signal emitted by the reflecting prism assembly 84 will not coincide with the original propagation path, that is, the emitted light and the incident light are at a certain angle, which can prevent the reflected light from returning to the optical fiber ferrule 21 of the optical fiber adapter 2 and affect the signal. transmission. Therefore, the light incident surface 841 is arranged obliquely, so that the light incident surface 841 and the light output bottom surface 843 are at a non-perpendicular angle, which reduces the impact of the light receiving chip 85 receiving light return loss on the optical signal transmission, thereby ensuring the light coupling effect of the light receiving chip 85 .

本实施例提供的反射棱镜组件84，其长、高、宽分别为2mm、1.5mm、1mm。第二会聚透镜844与反射棱镜组件84胶合而成，反射棱镜组件84将平行光转折，第二会聚透镜844将转折后的平行光汇聚到光接收芯片85的光敏面，实现光信号的接收。The reflective prism component 84 provided in this embodiment has a length, a height, and a width of 2 mm, 1.5 mm, and 1 mm, respectively. The second condensing lens 844 and the reflecting prism assembly 84 are glued together. The reflecting prism assembly 84 deflects the parallel light, and the second condensing lens 844 condenses the deflected parallel light to the photosensitive surface of the light receiving chip 85 to realize light signal reception.

为降低光回损，本实施例中，第二会聚透镜844的材料可为L-LAH84或其他材料，反射棱镜组件84的材料可为L-LAH84或其他材料。To reduce light return loss, in this embodiment, the material of the second condensing lens 844 can be L-LAH84 or other materials, and the material of the reflective prism component 84 can be L-LAH84 or other materials.

如图20所示，S10面为反射棱镜组件84的入光面841，S10面镀AR膜，增加光通量，减少界面反射。S10面与S30面(水平面)夹角85度(或其他非垂直角度，角度范围为30～135度，不包括90度)，非垂直角度可以降低接收光回损。S20面为反射棱镜组件84的反射斜面842，S20面不镀膜，利用光密介质到光疏介质全反射特性，实现光路转折。As shown in FIG. 20, the S10 surface is the light incident surface 841 of the reflective prism component 84, and the S10 surface is coated with AR film to increase the luminous flux and reduce the interface reflection. The included angle between the S10 surface and the S30 surface (horizontal plane) is 85 degrees (or other non-vertical angles, the angle range is 30 to 135 degrees, excluding 90 degrees). The non-vertical angle can reduce the received light return loss. The S20 surface is the reflective inclined surface 842 of the reflective prism component 84, and the S20 surface is not coated. The total reflection characteristic of the optically dense medium to the optically thinner medium is used to realize the turning of the light path.

S40面是第二会聚透镜844的上平板面，S30是反射棱镜组件84的出光底面843，S40面与S30面中间用光学胶粘合，光学胶的折射率与第二会聚透镜844、反射棱镜组件84相同或相近；若光学胶折射率与第二会聚透镜844、反射棱镜组件84不同，需要在S40面或S30面镀AR膜，减少界面反射。The S40 surface is the upper flat surface of the second converging lens 844, S30 is the bottom light-emitting surface 843 of the reflective prism component 84, the S40 surface and the S30 surface are bonded with optical glue, and the refractive index of the optical glue is the same as that of the second converging lens 844 and reflecting prism. The components 84 are the same or similar; if the refractive index of the optical glue is different from that of the second condensing lens 844 and the reflective prism component 84, AR coating needs to be coated on the S40 surface or the S30 surface to reduce interface reflection.

S50面是第二会聚透镜844的出光面与空气的交界面，S50面镀AR膜，增大光通量，降低反射。The S50 surface is the interface between the light exit surface of the second converging lens 844 and the air. The S50 surface is coated with AR film to increase the luminous flux and reduce the reflection.

通过软件仿真计算，本申请实施例对S10面倾斜优化，接收光回损值可提高10dB，使得光接收芯片85降低对光回损的接收，进而减少光回损对光信号传输的影响，保证光耦合效果。Through software simulation calculations, the embodiment of the application optimizes the S10 surface tilt, and the received optical return loss value can be increased by 10dB, so that the optical receiving chip 85 reduces the optical return loss reception, thereby reducing the impact of optical return loss on optical signal transmission and ensuring Light coupling effect.

本申请实施例提供的一种光模块，包括内壳1及位于内壳1一端的光纤适配器2，内壳1内包括激光芯片61、第一滤波片88，反射片82、第二滤波片83、反射棱镜组件84和光接收芯片85。激光芯片61发出的光信号通过第一滤波片88进入光纤适配器2后射出；来自光纤适配器2的光信号经第一滤波片88反射后射向反射片82，经反射片82反射后透过第二滤波片83射向反射棱镜组件84；反射棱镜组件84的入光面841与光信号的传播方向呈非垂直角度，非垂直角度可以减少接收光回损，反射棱镜组件84的末端端面为倾斜的反射斜面842，用于向出光底面843反射光信号，来自第二滤波片83的光信号透过入光面841发生光转折，传播到反射斜面842并反射后射向出光底面843，以被出光底面843下方的光接收芯片85接收。可见，本申请提供的光模块，对反射棱镜组件的入光面841做倾斜处理，可以减少接收光回损，进而减少对光信号传输的影响，保证光耦合效果。An optical module provided by an embodiment of the present application includes an inner housing 1 and an optical fiber adapter 2 located at one end of the inner housing 1. The inner housing 1 includes a laser chip 61, a first filter 88, a reflector 82, and a second filter 83. , Reflecting prism assembly 84 and light receiving chip 85. The optical signal emitted by the laser chip 61 enters the optical fiber adapter 2 through the first filter 88 and then is emitted; the optical signal from the optical fiber adapter 2 is reflected by the first filter 88 and then directed to the reflector 82, and is reflected by the reflector 82 and then transmitted through the optical fiber adapter 2. The second filter 83 is directed toward the reflective prism component 84; the light incident surface 841 of the reflective prism component 84 is at a non-perpendicular angle to the propagation direction of the optical signal. The non-vertical angle can reduce the received light return loss. The end face of the reflective prism component 84 is inclined The reflective inclined surface 842 is used to reflect the light signal to the light-emitting bottom surface 843. The light signal from the second filter 83 passes through the light-incident surface 841, undergoes light turning, propagates to the reflective inclined surface 842 and is reflected to the light-emitting bottom surface 843 to be The light receiving chip 85 below the light emitting bottom surface 843 receives it. It can be seen that, in the optical module provided by the present application, tilting the light incident surface 841 of the reflective prism assembly can reduce the received light return loss, thereby reducing the impact on optical signal transmission and ensuring the optical coupling effect.

本申请实施例提供的光模块，光发射腔101内的激光芯片61产生的光信号由第一柔性电路板3提供的电信号转换而成，而光接收腔102内的光接收芯片85在接收到光信号后，需转换为电信号传送至第二柔性电路板4。因此，为实现光电信号的转换，在光发射腔101内设置第一陶瓷基板60，第一陶瓷基板60上设置第一导电金属层62和光探测器66。在光接收腔102内设置第二陶瓷基板86，在第二陶瓷基板86上设置第二导电金属层87。In the optical module provided by the embodiment of the present application, the optical signal generated by the laser chip 61 in the light emitting cavity 101 is converted from the electrical signal provided by the first flexible circuit board 3, and the light receiving chip 85 in the light receiving cavity 102 is receiving After the optical signal is received, it needs to be converted into an electrical signal and transmitted to the second flexible circuit board 4. Therefore, in order to realize the conversion of photoelectric signals, a first ceramic substrate 60 is provided in the light emitting cavity 101, and a first conductive metal layer 62 and a photodetector 66 are provided on the first ceramic substrate 60. A second ceramic substrate 86 is provided in the light receiving cavity 102, and a second conductive metal layer 87 is provided on the second ceramic substrate 86.

在光发射腔101内，第一陶瓷基板60用于调整激光芯片61和会聚透镜63的在光路传输上的高度，使二者的光轴重合，并与光隔离器64的光轴和光纤适配器2中光纤插芯21的光轴重合，提高光耦合效果。第一陶瓷基板60的表面涂覆有第一导电金属层62，激光芯片61设置在第一导电金属层62上，激光芯片61与第一导电金属层62的正极打线连接，第一导电金属层62用于向激光芯片61传递电信号。第一陶瓷基板60通过第一导电金属层62与第一柔性电路板3连接，第一导电金属层62的电信号则由第一柔性电路板3提供。In the light emitting cavity 101, the first ceramic substrate 60 is used to adjust the height of the laser chip 61 and the condensing lens 63 on the optical path transmission, so that the optical axes of the two coincide with the optical axis of the optical isolator 64 and the optical fiber adapter The optical axis of the optical fiber ferrule 21 in 2 coincides, which improves the optical coupling effect. The surface of the first ceramic substrate 60 is coated with a first conductive metal layer 62. The laser chip 61 is arranged on the first conductive metal layer 62. The laser chip 61 is connected to the anode of the first conductive metal layer 62 by wire bonding. The layer 62 is used to transmit electrical signals to the laser chip 61. The first ceramic substrate 60 is connected to the first flexible circuit board 3 through the first conductive metal layer 62, and the electrical signal of the first conductive metal layer 62 is provided by the first flexible circuit board 3.

在光发射腔101内，激光芯片61固定在第一陶瓷基板60上，会聚透镜63位于激光芯片61的出光传播路径上，光隔离器64固定在光学平台65上，可以实现激光芯片61、会聚透镜63和光隔离器64的高度精准调节，使得激光芯片61的出光口与会聚透镜63的入光口对应，会聚透镜63的出光口与光隔离器64的入光口对应，光隔离器64的出光口与光纤适配器2的入光口对应，激光芯片61发出的光信号能够被光纤适配器2全部接收，以保证光耦合效果。In the light emitting cavity 101, the laser chip 61 is fixed on the first ceramic substrate 60, the condensing lens 63 is located on the light propagation path of the laser chip 61, and the optical isolator 64 is fixed on the optical platform 65 to realize the laser chip 61 and the converging The heights of the lens 63 and the optical isolator 64 are precisely adjusted so that the light exit of the laser chip 61 corresponds to the light entrance of the condensing lens 63, and the light exit of the condensing lens 63 corresponds to the light entrance of the optical isolator 64. The light exit port corresponds to the light entrance port of the optical fiber adapter 2, and the optical signal emitted by the laser chip 61 can be all received by the optical fiber adapter 2 to ensure the optical coupling effect.

在光接收腔102内，第二陶瓷基板86上设置第二导电金属层87、反射棱镜组件84和光接收芯片85。第二陶瓷基板86用于固定反射棱镜组件84和光接收芯片85，调整光接收器件在光路传输上的高度，使得反射棱镜组件84的出光口与光接收芯片85的光敏面对应，光接收芯片85可以接收反射棱镜组件84传播的光信号，避免造成光损耗。In the light receiving cavity 102, a second conductive metal layer 87, a reflective prism assembly 84 and a light receiving chip 85 are provided on the second ceramic substrate 86. The second ceramic substrate 86 is used to fix the reflective prism component 84 and the light receiving chip 85, adjust the height of the light receiving device on the optical path transmission, so that the light exit of the reflective prism component 84 corresponds to the photosensitive surface of the light receiving chip 85, and the light receiving chip 85 can receive the optical signal propagated by the reflective prism component 84 to avoid light loss.

光接收芯片85与第二导电金属层87连接，第二陶瓷基板86通过第二导电金属层87与第二柔性电路板4连接，光接收芯片85接收到的光信号通过第二导电金属层87传递至第二柔性电路板4，以将光信号转换为电信号，实现光模块的光电转换。The light receiving chip 85 is connected to the second conductive metal layer 87, the second ceramic substrate 86 is connected to the second flexible circuit board 4 through the second conductive metal layer 87, and the optical signal received by the light receiving chip 85 passes through the second conductive metal layer 87 It is transferred to the second flexible circuit board 4 to convert the optical signal into an electrical signal to realize the photoelectric conversion of the optical module.

为获得不同波长的光信号，本领域通常在光模块中采用波分复用技术调制不同波长的光信号，以提高光纤通信容量。为此，需要借助TEC(Thermoelectric cooler，半导体制冷器)进行热调。光模块中的光发射器件在发射光信号时，光发射器件内的激光芯片产生热量，为使激光芯片的温度稳定，避免改变激光芯片的出光波长，需借助一个TEC来维持激光芯片的温度稳定，以获得稳定的光信号；光接收器件在接收光信号时，由于来自光纤适配器的光有多个，为筛选出适宜波长的光信号，光接收器件需要借助另一个TEC通过控温的方式筛选出不同波长的光信号。In order to obtain optical signals of different wavelengths, wavelength division multiplexing technology is generally used in optical modules to modulate optical signals of different wavelengths in order to improve optical fiber communication capacity. For this reason, it is necessary to use TEC (Thermoelectric Cooler, semi-conductor cooler) for thermal regulation. When the light emitting device in the optical module emits light signals, the laser chip in the light emitting device generates heat. In order to stabilize the temperature of the laser chip and avoid changing the light wavelength of the laser chip, a TEC is needed to maintain the temperature stability of the laser chip In order to obtain a stable optical signal; when the optical receiving device receives the optical signal, because there are multiple lights from the optical fiber adapter, in order to filter out the optical signal of the appropriate wavelength, the optical receiving device needs to use another TEC to filter by temperature control. Output optical signals of different wavelengths.

为避免光模块在工作时，使光接收器件8和光发射器件6产生热串扰现象以及TEC组件(7、9)无法调制光信号的现象，影响光接收器件8、光发射器件6性能及光模块的正常工作。本实施例提供的光模块，在光发射腔101内设置第一TEC组件7，在光接收腔102内设置第二TEC组件9。In order to avoid thermal crosstalk between the light receiving device 8 and the light emitting device 6 and the phenomenon that the TEC components (7, 9) cannot modulate the optical signal when the optical module is working, the performance of the light receiving device 8, the light emitting device 6 and the optical module will be affected Is working properly. In the optical module provided in this embodiment, the first TEC component 7 is arranged in the light emitting cavity 101 and the second TEC component 9 is arranged in the light receiving cavity 102.

最后应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

一种光模块，其特征在于，包括：An optical module, characterized in that it comprises:

内壳；Inner shell

隔热板，所述隔热板将所述内壳围合成的空腔分隔成光发射腔和光接收腔；A heat insulation board, which divides the cavity formed by the inner shell into a light emitting cavity and a light receiving cavity;

光纤适配器，设置在所述内壳的一端并于与所述光发射腔连通；An optical fiber adapter, which is arranged at one end of the inner shell and communicates with the light emitting cavity;

所述光发射腔内设有激光芯片和第一滤波片，所述激光芯片发出的光信号透过所述第一滤波片进入所述光纤适配器；A laser chip and a first filter are arranged in the light emitting cavity, and the light signal emitted by the laser chip enters the optical fiber adapter through the first filter;

所述隔热板上设有光通口，所述光接收腔内设有反射片、第二滤波片、反射面和光接收芯片，所述第二滤波片允许特定波长的光通过；The heat insulation board is provided with a light passage, the light receiving cavity is provided with a reflective sheet, a second filter sheet, a reflective surface and a light receiving chip, and the second filter sheet allows light of a specific wavelength to pass through;

来自所述光纤适配器的光信号传播到所述第一滤波片后发生反射，形成的反射光经过所述光通***向所述反射片，经所述反射片再次反射向所述第二滤波片，通过所述第二滤波片的光由所述反射面向所述光接收芯片的方向反射。The optical signal from the optical fiber adapter propagates to the first filter and is reflected, and the formed reflected light passes through the light opening and is directed to the reflector, and is reflected again to the second filter through the reflector. The light passing through the second filter is reflected by the reflecting surface in the direction of the light receiving chip.
根据权利要求1所述的光模块，其特征在于，所述光接收腔内还设有第二TEC组件和第二TEC组件底座；所述第二TEC组件设置在第二TEC组件底座上，所述第二滤波片设置在所述第二TEC组件的上热交换面上，经所述反射片反射的光通过所述第二滤波片的表面以透过所述第二滤波片。The optical module according to claim 1, wherein a second TEC assembly and a second TEC assembly base are further provided in the light receiving cavity; the second TEC assembly is arranged on the second TEC assembly base, so The second filter is arranged on the upper heat exchange surface of the second TEC component, and the light reflected by the reflector passes through the surface of the second filter to pass through the second filter.
根据权利要求2所述的光模块，其特征在于，所述第二TEC组件上设有通光孔，所述通光孔用于实现来自所述反射片反射的光信号穿过，所述第二滤波片贴附在所述通光孔上。The optical module according to claim 2, wherein the second TEC component is provided with a light-through hole, and the light-through hole is used to allow the light signal reflected from the reflector to pass through, and the second TEC component The two filters are attached to the light-passing hole.
根据权利要求3所述的光模块，其特征在于，所述第二TEC组件底座上设有第一通光口，所述第一通光口用于实现来自所述反射片反射的光信号穿过。The optical module according to claim 3, wherein the second TEC component base is provided with a first light opening, and the first light opening is used to realize the transmission of the light signal reflected from the reflector. Over.
根据权利要求1所述的光模块，其特征在于，所述反射片和所述第一滤波片之间还设有第三滤波片。The optical module according to claim 1, wherein a third filter is further provided between the reflector and the first filter.
根据权利要求1所述的光模块，其特征在于，所述光发射腔内还设有会聚透镜、光隔离器和一体化平台；The optical module according to claim 1, wherein the light emitting cavity is further provided with a converging lens, an optical isolator and an integrated platform;

所述会聚透镜设于所述激光芯片和所述光隔离器之间；所述光隔离器固定在所述一体化平台的侧壁上，所述一体化平台内设有与所述光隔离器的出光口连通的通光路径；所述一体化平台中所述通光路径的出光口与所述光纤适配器的入光口对应；The condensing lens is arranged between the laser chip and the optical isolator; the optical isolator is fixed on the side wall of the integrated platform, and the integrated platform is provided with the optical isolator The light path through which the light outlet of the optical fiber is connected; the light outlet of the light path in the integrated platform corresponds to the light inlet of the optical fiber adapter;

所述激光芯片发出的光经过所述会聚透镜会聚后进入所述光隔离器，形成的平行光经过所述光隔离器进入通光路径后射出，形成的出射光进入所述光纤适配器。The light emitted by the laser chip enters the optical isolator after being condensed by the condensing lens, the formed parallel light enters the light path through the optical isolator and then exits, and the formed emergent light enters the optical fiber adapter.
根据权利要求6所述的光模块，其特征在于，所述一体化平台的出光口设有出光斜面，所述第一滤波片设置在所述出光斜面上，所述第一滤波片和所述光纤适配器之间设有聚焦透镜；来自所述光纤适配器的光信号经过所述聚焦透镜后照射在所述第一滤波片上并发生反射，形成的反射光经过所述光通口进入所述光接收腔中。The optical module according to claim 6, wherein the light exit of the integrated platform is provided with a light exit slope, the first filter is arranged on the light exit slope, and the first filter and the A focusing lens is arranged between the fiber optic adapters; the optical signal from the fiber optic adapter irradiates on the first filter after passing through the focusing lens and is reflected, and the formed reflected light enters the light receiving through the light port Cavity.
一种光模块，其特征在于，包括：内壳及位于所述内壳一端的光纤适配器；所述内壳内包括激光芯片、第一滤波片，反射片、第二滤波片、反射棱镜组件和光接收芯片；An optical module, which is characterized by comprising: an inner shell and an optical fiber adapter located at one end of the inner shell; the inner shell includes a laser chip, a first filter, a reflective sheet, a second filter, a reflective prism assembly and a light Receiving chip

所述激光芯片发出的光信号通过所述第一滤波片进入所述光纤适配器后射出；来自所述光纤适配器的光信号经所述第一滤波片反射后射向所述反射片，经所述反射片反射后透过所述第二滤波片射向所述反射棱镜组件；The optical signal emitted by the laser chip enters the optical fiber adapter through the first filter and then is emitted; the optical signal from the optical fiber adapter is reflected by the first filter and then is directed to the reflector, and passes through the optical fiber adapter. The reflecting sheet is reflected by the second filter sheet and directed toward the reflecting prism assembly;

所述反射棱镜组件的入光面与光信号的传播方向呈非垂直角度，所述反射棱镜组件的末端端面为倾斜的反射斜面，所述反射棱镜组件的出光底面的下方设置有所述光接收芯片；The light incident surface of the reflective prism component is at a non-perpendicular angle to the propagation direction of the optical signal, the end face of the reflective prism component is a slanted reflective inclined surface, and the light receiving surface is provided under the bottom surface of the reflective prism component. chip;

来自所述第二滤波片的光信号由所述入光面射进所述反射棱镜组件，传播到所述反射斜面并反射后射向所述出光底面，以被所述出光底面下方的所述光接收芯片接收。The light signal from the second filter is injected into the reflecting prism assembly from the light incident surface, propagates to the reflecting inclined surface and is reflected on the light emitting bottom surface, so as to be absorbed by the light emitting bottom surface below the light emitting bottom surface. The light receiving chip receives.
根据权利要求8所述的光模块，其特征在于，所述反射棱镜组件的出光底面设置有第二会聚透镜，以接收所述反射斜面反射来的光；所述光接收芯片位于所述第二会聚透镜的下方，以接收所述第二会聚透镜的汇聚光。The optical module according to claim 8, wherein a second condensing lens is provided on the bottom surface of the reflecting prism assembly to receive the light reflected by the reflecting inclined surface; and the light receiving chip is located in the second condensing lens. Below the condensing lens to receive the condensed light of the second condensing lens.
根据权利要求8所述的光模块，其特征在于，所述反射棱镜组件的入光面沿底端到顶端的方向倾斜，倾斜方向与光信号的传播方向相同，所述入光面与光信号的传播路径之间的角度呈锐角或钝角。The optical module according to claim 8, wherein the light incident surface of the reflective prism assembly is inclined from the bottom end to the top end, and the inclination direction is the same as the propagation direction of the optical signal, and the light incident surface is the same as the optical signal propagation direction. The angle between the propagation paths is acute or obtuse.
根据权利要求8所述的光模块，其特征在于，所述反射斜面沿底端到顶端的方向倾斜，倾斜方向与光信号的传播方向相反，所述反射斜面与所述出光底面呈锐角连接。8. The optical module according to claim 8, wherein the reflective inclined surface is inclined from the bottom end to the top end, and the inclined direction is opposite to the propagation direction of the optical signal, and the reflective inclined surface is connected with the light emitting bottom surface at an acute angle.
根据权利要求8所述的光模块，其特征在于，所述内壳内还包括会聚透镜、光隔离器和光学平台；所述光隔离器设置在所述光学平台上，所述会聚透镜设于所述激光芯片和所述光隔离器之间；所述激光芯片发出的光信号依次透过所述会聚透镜、所述光隔离器及所述第一滤波片，进入所述光纤适配器后射出。The optical module according to claim 8, wherein the inner shell further comprises a condensing lens, an optical isolator, and an optical platform; the optical isolator is arranged on the optical platform, and the condensing lens is arranged on the optical platform. Between the laser chip and the optical isolator; the optical signal emitted by the laser chip sequentially passes through the condensing lens, the optical isolator and the first filter, enters the optical fiber adapter, and is emitted.
根据权利要求12所述的光模块，其特征在于，所述光学平台的后表面形成第一斜面，所述第一滤波片设置在所述第一斜面上。The optical module according to claim 12, wherein the rear surface of the optical platform forms a first inclined surface, and the first filter is disposed on the first inclined surface.
根据权利要求1所述的光模块，其特征在于，所述内壳内还包括设置在所述第一滤波片和所述光纤适配器之间的聚焦透镜，来自所述光纤适配器的光信号经过所述聚焦透镜传播在所述第一滤波片上并发生反射，射向所述反射片。The optical module according to claim 1, wherein the inner shell further comprises a focusing lens arranged between the first filter and the optical fiber adapter, and the optical signal from the optical fiber adapter passes through all the The focusing lens propagates on the first filter sheet and is reflected, and is directed toward the reflection sheet.
根据权利要求8所述的光模块，其特征在于，所述内壳内还包括光路改变平台，所述光路改变平台内设有变光路径，所述变光路径的入光口朝向所述第一滤波片；所述光路改变平台的一侧设有倾斜的所述反射片，所述第一滤波片反射的光信号经由所述变光路径传播到所述反射片再次反射后射向所述第二滤波片。The optical module according to claim 8, characterized in that, the inner shell further comprises a light path changing platform, the light path changing platform is provided with a light changing path, and the light entrance of the light changing path faces the first light path. A filter; one side of the optical path changing platform is provided with the inclined reflector, and the light signal reflected by the first filter propagates to the reflector via the variable light path and is reflected again to the reflector. The second filter.