WO2020248642A1

WO2020248642A1 - Optical module

Info

Publication number: WO2020248642A1
Application number: PCT/CN2020/080411
Authority: WO
Inventors: 蔚永军; 张晓廓
Original assignee: 青岛海信宽带多媒体技术有限公司
Priority date: 2019-06-11
Filing date: 2020-03-20
Publication date: 2020-12-17
Also published as: CN110244414A

Abstract

Disclosed is an optical module (200). Light emitted from a laser chip (11) is divergent and converges at a lens (3), and a light spot of a converged light beam gradually changes from a large light spot to a small light spot; a blocking member (5) has a light incoming port larger than a light exiting port; the light incoming port can allow a light beam with a large light spot to enter, and a small light spot is emitted from the light exiting port; the cross sectional area of an inner cavity of the blocking member (5) gradually reduces from the light incoming port to the light exiting port, and the light spot of the converged light beam also gradually reduces, such that the outline of the shape of the converged light beam is the same as the shape of the inner cavity of the blocking member (5), and most of the converged light beam can pass through the blocking member (5); and reflected light generated at an adapter (4) is in a divergent state when propagated toward the blocking member (5), and the light spots are larger, and the light exiting port, located at one end of the adapter (4), of the blocking member (5) is smaller, such that most of the reflected light is blocked by an outer wall of the blocking member (5) and cannot return into the laser chip (11) through the light exiting port of the blocking member (5), thereby preventing the reflected light from influencing the light emission of the laser chip (11).

Description

光模块Optical module

本申请要求在2019年06月11日提交中国专利局、申请号为201910500623.8、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 claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910500623.8, and the invention title is "a kind of optical module" on June 11, 2019, 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

在光纤通信领域中，需用到光模块，光模块是一种可实现光电或电光转换的光器件。常用的光模块包括主体元件、激光器芯片和光接口，激光器芯片设置在主体元件的一端，光接口设置在主体元件的另一端，光接口内安装有光纤。在光接口的一侧设置光线汇聚孔，光线汇聚孔一端的主体元件为曲面结构，形成凸透镜。在光的传输过程中，从激光器芯片发射的光为发散光，发散光进入主体元件，经凸透镜汇聚后耦合进光纤。In the field of optical fiber communication, an optical module is needed, which is an optical device that can realize photoelectric or electro-optical conversion. Commonly used optical modules include a main body element, a laser chip and an optical interface. The laser chip is arranged at one end of the main element, the optical interface is arranged at the other end of the main element, and an optical fiber is installed in the optical interface. A light converging hole is provided on one side of the optical interface, and the main element at one end of the light converging hole has a curved structure to form a convex lens. In the light transmission process, the light emitted from the laser chip is divergent light, and the divergent light enters the main component, is converged by the convex lens and then coupled into the optical fiber.

激光器芯片发出的光在耦合进光纤的过程中，会有一部分经过光纤端面反射回来，反射回来的光会有一部分再次进入到激光器中，导致激光器芯片发光的性能变差。During the process of coupling into the optical fiber, part of the light emitted by the laser chip will be reflected back through the end face of the optical fiber, and part of the reflected light will enter the laser again, resulting in poor performance of the laser chip's light emission.

发明内容Summary of the invention

本申请提供了一种光模块，以少反射光对激光器芯片出光的影响。This application provides an optical module to reduce the influence of reflected light on the light emitted by the laser chip.

本申请提供了一种光模块，包括：管体，设置在光模块的壳体内；激光器组件，固定在管体的一端，包括激光器芯片及透镜，透镜可汇聚激光器芯片发出的光；阻隔件，位于管体内，靠近透镜的一端设有进光口，另一端设有出光口，沿着所述阻隔件的所述进光口至所述出光口的方向，所述阻隔件内腔的横截面面积逐渐变小；适配器，固定在管体的另一端，可接收通过阻隔件的光。The present application provides an optical module, including: a tube body, which is arranged in the housing of the optical module; a laser assembly, fixed on one end of the tube body, including a laser chip and a lens, the lens can converge the light emitted by the laser chip; a barrier, Located in the tube body, one end close to the lens is provided with a light inlet, and the other end is provided with a light outlet. Along the direction from the light inlet to the light outlet of the barrier, the cross section of the inner cavity of the barrier is The area gradually becomes smaller; the adapter, fixed at the other end of the tube body, can receive the light passing through the barrier.

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。In order to explain the technical solution 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 be obtained from these drawings.

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为本申请实施例提供的一种光模块结构示意图；FIG. 3 is a schematic structural diagram of an optical module provided by an embodiment of the application;

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收发器件的结构示意图；5 is a schematic structural diagram of an optical transceiver device provided by an embodiment of the application;

图6为本申请实施例提供的光收发器件的另一结构示意图；FIG. 6 is another schematic structural diagram of an optical transceiver device provided by an embodiment of the application;

图7为本申请实施例提供的光模块的结构示意图；FIG. 7 is a schematic structural diagram 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分解结构示意图；8 is a schematic diagram of an exploded structure of an optical module provided by an embodiment of the application;

图9为本申请实施例提供的管体的结构示意图；FIG. 9 is a schematic structural diagram of a pipe body provided by an embodiment of the application;

图10为本申请实施例提供的光模块的剖视图；Figure 10 is a cross-sectional view of an optical module provided by an embodiment of the application;

图11为本申请实施例提供的光模块的另一剖视图；11 is another cross-sectional view of the optical module provided by the embodiment of the application;

图12为本申请实施例提供的光模块的剖视正视图；Figure 12 is a cross-sectional front view of an optical module provided by an embodiment of the application;

图13为本申请实施例提供的芯片经过偏心和倾斜后的光路图；FIG. 13 is an optical path diagram of a chip provided by an embodiment of the application after being eccentric and tilted;

图14(a)为本申请实施例提供的阻隔件的轴向示意图；Figure 14 (a) is an axial schematic view of the barrier provided by an embodiment of the application;

图14(b)为本申请实施例提供的阻隔件的另一轴向示意图；Figure 14(b) is another axial schematic view of the barrier provided by the embodiment of the application;

图14(c)为本申请实施例提供的阻隔件的剖视图；Figure 14(c) is a cross-sectional view of a barrier provided by an embodiment of the application;

图14(d)为本申请实施例提供的阻隔件的正视图；Figure 14(d) is a front view of a barrier provided by an embodiment of the application;

图15为本申请实施例提供的芯片射出的光信号经过阻隔件后的光路图；15 is an optical path diagram of an optical signal emitted from a chip provided by an embodiment of the application after passing through a barrier;

图16为本申请实施例提供的光信号经光纤插芯端面的反射光的光路图。16 is a diagram of the optical path of the reflected light of the optical signal passing through the end face of the optical fiber ferrule provided by an embodiment of the application.

具体实施方式Detailed ways

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 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 of 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.

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 during signal transmission.

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 gold finger on the circuit board. The main electrical connections include power supply, I2C signal, data signal transmission, and grounding. The electrical connection method realized by the gold finger has become the optical module industry. The standard method, based on this, the circuit board is an essential 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 with 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. During the above 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, there is a circuit board 105 in the optical network unit 100, 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壳体传导给笼子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 wraps the electrical connectors on the circuit board 105 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 passes through the optical module housing It is transmitted to the cage 106 and finally diffused through the radiator 107 on the cage 106.

光模块200在上述光通信连接中起到光电转换的关键作用，目前一种硅基光电芯片的封装方式在光模块行业逐渐成熟，其将硅基集成电路技术与光波导技术结合到一起，以芯片生长制作工艺制作出集成光电转换功能及电光转换功能的芯片。然而，由于硅光芯片采用的硅材料不是理想的激光芯片发光材料，不能在硅光芯片制作过程集成发光单元，所以硅光芯片需要由外部光源提供光。The optical module 200 plays a key role in photoelectric conversion in the above-mentioned optical communication connection. At present, a silicon-based optoelectronic chip packaging method has gradually matured in the optical module industry. It combines silicon-based integrated circuit technology with optical waveguide technology. The chip growth manufacturing process produces a chip with integrated photoelectric conversion function and electro-optical conversion function. However, since the silicon material used in the silicon optical chip is not an ideal luminescent material for the laser chip, and the light-emitting unit cannot be integrated in the silicon optical chip manufacturing process, the silicon optical chip needs to be provided with light from an external light source.

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包括上壳体201、下壳体202、解锁手柄203、电路板300及光收发器件400；FIG. 3 is a schematic structural diagram of an optical module provided by an embodiment of the application, and FIG. 4 is a schematic diagram of an exploded structure of an optical module provided by an embodiment of the application. As shown in FIGS. 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;

上壳体201与下壳体202形成具有两个开口的包裹腔体，具体可以是在同一方向的两端开口(204、205)，也可以是在不同方向上的两处开口；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及激光盒等光电器件位于包裹腔体中。The upper shell 201 and the lower shell 202 form a wrapping cavity with two openings, which can be opened at both ends (204, 205) in the same direction, or at two openings in different directions; one of the openings It is the electrical port 204, which is used to insert into the upper computer such as the optical network unit, and the other opening is the optical port 205, which is used for external optical fiber access to connect the internal optical fiber. The circuit board 300, the optical transceiver device 400 and the laser box and other optoelectronic devices are located Wrap in the cavity.

上壳体201与下壳体202一般采用金属材料，利于实现电磁屏蔽以及散热；采用上壳体201与下壳体202结合的装配方式，便于将电路板300等器件安装到壳体中，一般不会将光模块的壳体做成一体结构，这样在装配电路板等器件时，定位部件、散热以及电磁屏蔽结构无法安装，也不利于生产自动化。The upper shell 201 and the lower shell 202 are generally made of metal materials, which is conducive to electromagnetic shielding and heat dissipation; the assembly method of the upper shell 201 and the lower shell 202 is used to facilitate the installation of the circuit board 300 and other components into the shell. The housing of the optical module will not be made into an integrated structure, so that when assembling circuit boards and other devices, positioning components, heat dissipation and electromagnetic shielding structures cannot be installed, which is also not conducive to production automation.

解锁手柄203位于包裹腔体/下壳体202的外壁，拉动解锁手柄203的末端可以在使解锁手柄在外壁表面相对移动；光模块200***上位机时由解锁手柄203将光模块固定在上位机的笼子106里，通过拉动解锁手柄203以解除光模块200与上位机的卡合关系，从而可以将光模块200从上位机的笼子106里抽出。The unlocking handle 203 is located on the outer wall of the package cavity/lower housing 202. Pulling the end of the unlocking handle 203 can make the unlocking handle move relatively on the outer wall surface; when the optical module 200 is inserted into the upper computer, the unlocking handle 203 fixes the optical module on the upper computer In the cage 106 of the upper computer, the unlocking handle 203 is pulled to release the engagement relationship between the optical module 200 and the upper computer, so that the optical module 200 can be withdrawn from the cage 106 of the upper computer.

图5为本申请实施例提供的光收发器件的结构示意图；图6为本申请实施例提供的光收发器件的另一结构示意图。如图5和图6所示，光模块200中的光收发器件400包括用于实现光信号和电信号转换的光组件，光组件包括：激光器组件1、管体2和适配器4，激光器组件1的一端与电路板300连接，激光器组件1的另一端固定在管体2内，适配器4固定在管体2的另一端，激光器组件1发出的光信号经管体2进入适配器4中的光纤插芯7。FIG. 5 is a schematic structural diagram of an optical transceiver device provided by an embodiment of this application; FIG. 6 is another schematic structural diagram of an optical transceiver device provided by an embodiment of this application. As shown in Figures 5 and 6, the optical transceiver device 400 in the optical module 200 includes optical components for realizing the conversion of optical signals and electrical signals. The optical components include: a laser component 1, a tube body 2 and an adapter 4, and a laser component 1. One end of the laser assembly 1 is connected to the circuit board 300, the other end of the laser assembly 1 is fixed in the tube body 2, and the adapter 4 is fixed to the other end of the tube body 2. The optical signal from the laser assembly 1 enters the fiber ferrule in the adapter 4 through the tube body 2. 7.

激光器组件1发出的光在耦合进光纤的过程中，会有一部分经过光纤端面反射回来，反射回来的光会有一部分再次进入到激光器中，导致激光器发光的性能变差。为减少反射光对激光器的影响，本申请实施例提供的一种光模块，具有隔离光的作用，可减少反射光再次进入到激光器中。During the process of coupling into the optical fiber, part of the light emitted by the laser assembly 1 will be reflected back through the end face of the optical fiber, and part of the reflected light will enter the laser again, resulting in poor performance of the laser. In order to reduce the influence of reflected light on the laser, an optical module provided by the embodiment of the present application has the function of isolating light and can reduce the reflected light from entering the laser again.

具体地，图7为本申请实施例提供的光模块的结构示意图；图8为本申请实施例提供的光模块的分解结构示意图。参见图7和图8，本申请实施例提供的一种光模块，包括：激光器组件1、管体2和适配器4。激光器组件1用于实现根据电信号发出光信号，管体2用于实现激光器组件1与适配器4之间的固定衔接，光信号由管体2传输进适配器4，适配器4内安装有光纤插芯7，光纤插芯7是由陶瓷包裹的光纤，由光纤插芯7实现光信号的射出。Specifically, FIG. 7 is a schematic structural diagram of an optical module provided by an embodiment of this application; FIG. 8 is a schematic structural diagram of an optical module provided by an embodiment of this application. Referring to FIG. 7 and FIG. 8, an optical module provided by an embodiment of the present application includes: a laser assembly 1, a tube body 2 and an adapter 4. The laser component 1 is used to send out optical signals according to electrical signals, and the tube body 2 is used to realize the fixed connection between the laser component 1 and the adapter 4. The optical signal is transmitted from the tube body 2 to the adapter 4, and the adapter 4 is equipped with an optical fiber ferrule. 7. The optical fiber ferrule 7 is an optical fiber wrapped by ceramics, and the optical signal is emitted by the optical fiber ferrule 7.

本实施例提供的光模块，通过同一根光纤实现光的发射和接收，因此，光模块还包括用于实现将光信号转换为电信号的接收器组件9，经适配器4内的光纤插芯7传输进光模块内的光信号，经接收器组件9转换为电信号。管体2内可实现由电信号转换的光信号的传输并由光纤插芯7射出，还可实现由光纤插芯7传输进的光信号发送至接收器组件9，由接收器组件9转换为电信号，为此，激光器组件1、适配器4和接收器组件9均需固定在管体2上。The optical module provided in this embodiment realizes the transmission and reception of light through the same optical fiber. Therefore, the optical module further includes a receiver assembly 9 for converting optical signals into electrical signals. The optical fiber ferrule 7 in the adapter 4 The optical signal transmitted into the optical module is converted into an electrical signal by the receiver assembly 9. The tube body 2 can realize the transmission of the optical signal converted by the electrical signal and be emitted from the optical fiber ferrule 7, and the optical signal transmitted by the optical fiber ferrule 7 can be sent to the receiver assembly 9, which is converted into For electrical signals, the laser assembly 1, the adapter 4 and the receiver assembly 9 all need to be fixed on the tube 2 for this purpose.

如图9所示，管体2包括中空的圆管体21和中空的方管体22，圆管体21和方管体22均设有空腔。圆管体21和方管体22可通过焊接组装在一起，而为保证光模块的结构强度，在具体装配过程中，需要在圆管体21和方管体22的连接处涂抹一圈黑胶来固化。As shown in FIG. 9, the tube body 2 includes a hollow round tube body 21 and a hollow square tube body 22. Both the round tube body 21 and the square tube body 22 are provided with cavities. The round tube body 21 and the square tube body 22 can be assembled together by welding. In order to ensure the structural strength of the optical module, in the specific assembly process, a circle of black glue should be applied to the connection between the round tube body 21 and the square tube body 22 To cure.

圆管体21固定在方管体22的外侧壁，圆管体21的轴线与方管体22的外侧壁垂直，圆管体21与方管体22连通；圆管体21与激光器组件1嵌套连接，激光器组件1安装在圆管体21内，圆管体21的尺寸可以用于调节激光器组件1与光纤插芯7之间的距离，以满足汇聚光的焦距要求，激光器组件1可发出横向的光波。The circular tube body 21 is fixed on the outer side wall of the square tube body 22, the axis of the circular tube body 21 is perpendicular to the outer side wall of the square tube body 22, the circular tube body 21 is connected with the square tube body 22; the circular tube body 21 is embedded with the laser assembly 1 The laser assembly 1 is installed in the tube body 21. The size of the tube body 21 can be used to adjust the distance between the laser assembly 1 and the fiber ferrule 7 to meet the focal length requirements of the focused light. The laser assembly 1 can emit Horizontal light waves.

激光器组件1固定在管体2的一端，适配器4固定在管体2的另一端，接收器组件9固定在管体2的上端。为实现固定，方管体22的上表面、左侧壁和右侧壁均设有通孔，左侧壁的通孔与圆管体21连通；右侧壁的通孔，即方管体22的与圆管体21相对的一侧设有的通孔，该通孔用于实现方管体22与适配器4的嵌套连接，适配器4内安装有光纤插芯7，使得激光器组件1的出光口和光纤插芯7的接收口相对；上表面的通孔23用于实现接收器组件9的安装。The laser assembly 1 is fixed to one end of the tube body 2, the adapter 4 is fixed to the other end of the tube body 2, and the receiver assembly 9 is fixed to the upper end of the tube body 2. In order to achieve fixation, the upper surface, the left side wall and the right side wall of the square tube body 22 are provided with through holes. The through hole on the left side wall communicates with the round tube body 21; the through hole on the right side wall is the square tube body 22. The through hole is provided on the side opposite to the round tube body 21, and the through hole is used to realize the nested connection between the square tube body 22 and the adapter 4. The adapter 4 is equipped with an optical fiber ferrule 7 to make the laser assembly 1 emit light The opening is opposite to the receiving opening of the optical fiber ferrule 7; the through hole 23 on the upper surface is used to install the receiver assembly 9.

在由光纤插芯7发射光信号经反射后进入接收器组件9，该过程光程较短，因此，需要接收器组件9直接通过上表面的通孔23固定在管体2上，使得光纤插芯7与接收器组件9相距较近。After the optical signal emitted by the optical fiber ferrule 7 enters the receiver assembly 9 after being reflected, the optical path of this process is short. Therefore, the receiver assembly 9 needs to be directly fixed on the tube body 2 through the through hole 23 on the upper surface, so that the optical fiber is inserted The core 7 is relatively close to the receiver assembly 9.

为实现由光纤插芯7传输进管体2的光信号再传输进接收器组件9，需在管体2内设置第一滤波片6和第二滤波片8。如图10、图11和图12所示，第一滤波片6位于激光器组件1和光纤插芯7之间，第一滤波片6呈角度安装，第一滤波片6沿由激光器组件1至光纤插芯7的方向倾斜，以使激光器组件1射出的光信号经由第一滤波片6透射后进入光纤插芯7。第二滤波片8位于第一滤波片6与接收器组件9之间，第二滤波片8与光纤插芯7的光轴平行，第二滤波片8与第一滤波片6之间呈45°夹角。In order to realize that the optical signal transmitted by the optical fiber ferrule 7 into the tube body 2 and then into the receiver assembly 9, a first filter 6 and a second filter 8 need to be arranged in the tube body 2. As shown in Figure 10, Figure 11 and Figure 12, the first filter 6 is located between the laser assembly 1 and the optical fiber ferrule 7, the first filter 6 is installed at an angle, and the first filter 6 extends from the laser assembly 1 to the optical fiber The direction of the ferrule 7 is inclined so that the optical signal emitted by the laser assembly 1 enters the optical fiber ferrule 7 after being transmitted through the first filter 6. The second filter 8 is located between the first filter 6 and the receiver assembly 9, the second filter 8 is parallel to the optical axis of the optical fiber ferrule 7, and the angle between the second filter 8 and the first filter 6 is 45° Included angle.

由光纤插芯7传输进的光信号，即在如图10所示的状态下，由右至左射进的光信号，照射在第一滤波片6后产生反射，为使反射后的光信号能够经第二滤波片8进入接收器组件9，本申请某些实施例中，设置第一滤波片6的倾斜角度为45°。光纤插芯7的光轴呈水平方向，由水平方向发射的光信号在经过45°倾斜的第一滤波片6后产生向上的反射，使得反射后的光信号能够垂直经过第二滤波片8后进入接收器组件9内，以将光信号转换为电信号。The optical signal transmitted by the optical fiber ferrule 7, that is, in the state shown in FIG. 10, the optical signal incident from right to left is irradiated on the first filter 6 and reflected to make the reflected optical signal It can enter the receiver assembly 9 through the second filter 8. In some embodiments of the present application, the tilt angle of the first filter 6 is set to 45°. The optical axis of the optical fiber ferrule 7 is in the horizontal direction, and the optical signal emitted from the horizontal direction is reflected upward after passing through the first filter 6 inclined at 45°, so that the reflected optical signal can pass through the second filter 8 vertically. Enter the receiver assembly 9 to convert the optical signal into an electrical signal.

而由激光器组件1射出的光信号，经由第一滤波片6透射后即可进入适配器4内的光纤插芯7中并射出。激光器组件1发出的光在耦合进光纤插芯7的过程中，会有一部分经过光纤插芯7端面反射回来，以及，还会发生漫反射，反射回来的光和漫反射的光会有一部分再次进入到激光器组件1中，导致激光器组件1发光的性能变差。因此，为了保证光模块的耦合效率，需将漫反射的光和反射光隔离掉。The optical signal emitted by the laser assembly 1 can enter the optical fiber ferrule 7 in the adapter 4 and be emitted after being transmitted through the first filter 6. During the process of coupling into the optical fiber ferrule 7, part of the light emitted by the laser assembly 1 will be reflected back through the end face of the optical fiber ferrule 7, and diffuse reflection will occur. The reflected light and diffusely reflected light will be partially reflected again. Entering into the laser assembly 1 causes the performance of the laser assembly 1 to emit light to deteriorate. Therefore, in order to ensure the coupling efficiency of the optical module, diffusely reflected light and reflected light need to be isolated.

本实施例中，第一滤波片6和第二滤波片8用于实现光信号的过滤，以获得所需波长的光信号。In this embodiment, the first filter 6 and the second filter 8 are used to filter the optical signal to obtain the optical signal of the desired wavelength.

激光器组件1内安装有激光器芯片(简称芯片)11，用于实现光信号的发射，而激光器芯片11发射的光信号为发散光，因此，需在激光器芯片11的发光口设置透镜3，以实现发散光的汇聚，透镜3位于激光器芯片11和第一滤波片6之间。A laser chip (chip for short) 11 is installed in the laser assembly 1 to realize the emission of optical signals, and the optical signal emitted by the laser chip 11 is divergent light. Therefore, a lens 3 needs to be provided at the light-emitting port of the laser chip 11 to achieve For the convergence of divergent light, the lens 3 is located between the laser chip 11 and the first filter 6.

针对反射光导致激光器组件1发光的性能变差的情况，已有技术中常采用隔离器来实现反射光的隔离，但因隔离器成本高，且易对光信号产生损耗，为避免影响光信号的耦合效率，本实施例提供的光模块中，去除隔离器。在保证光模块性能的条件下，可消除隔离器本身对光的损耗，也可消除隔离器因在加工时产生的偏振方向的偏差和隔离器安装时的角度偏差带来的光损耗，提高封装时的耦合效率，可减少对激光芯片功率的需求，同时大幅度地降低同轴封装光模块的成本。In view of the deterioration of the performance of the laser assembly 1 due to the reflected light, an isolator is often used in the prior art to isolate the reflected light. However, due to the high cost of the isolator and easy loss of the optical signal, in order to avoid affecting the optical signal For coupling efficiency, in the optical module provided in this embodiment, the isolator is removed. Under the condition of ensuring the performance of the optical module, the optical loss of the isolator itself can be eliminated, and the optical loss caused by the deviation of the polarization direction generated during processing and the angle deviation of the isolator during installation can also be eliminated, thereby improving the package The high coupling efficiency can reduce the demand for laser chip power and greatly reduce the cost of coaxial packaged optical modules.

为避免去除隔离器后反射光进入激光器组件1，影响激光器组件1的工作性能，本实施例提供的光模块，在激光器芯片11贴片时，进行偏心和倾斜一定角度的处理，使激光器芯片11发出光的光轴与透镜3的中心轴成一定角度出射，以降低反射光进入激光器的可能性。具体地，激光器组件1中倾斜安装有激光器芯片11，以使激光器芯片11发出光的光轴与透镜3的中心轴呈角度。In order to prevent the reflected light from entering the laser assembly 1 after removing the isolator and affecting the working performance of the laser assembly 1, the optical module provided in this embodiment is subjected to decentering and tilting at a certain angle when the laser chip 11 is mounted to make the laser chip 11 The optical axis of the emitted light exits at a certain angle with the central axis of the lens 3 to reduce the possibility of reflected light entering the laser. Specifically, a laser chip 11 is installed obliquely in the laser assembly 1 so that the optical axis of the laser chip 11 emits light at an angle with the central axis of the lens 3.

如图13所示，将激光器芯片11倾斜1°至10°左右，使得激光器芯片11发出光的光轴(chip axis)不与透镜3的中心轴重合，透镜3的中心轴(lens axis)为沿水平方向，使得倾斜后的激光器芯片11发出光的光轴与透镜3的中心轴之间存在夹角。而由于光纤插芯7的光轴(fiber axis)为水平方向，使得光纤插芯7的光轴与激光器芯片11发出光的光轴之间也呈角度。倾斜后的激光器芯片11发出光的光轴如图13中左侧箭头指向的虚线部分，透镜3的中心轴如图13中位于中间的箭头指向的实线部分，光纤插芯7的光轴如图13中右侧箭头指向的实线部分。以倾斜后的激光器芯片11发射三条光波为例，三条发散的光波经过透镜3后汇聚射出，三条发散的光波的光轴均不与透镜3的中心轴重合。汇聚后的光波经过第一滤波片6过滤后，符合波段需求的光波耦合进适配器4中的光纤插芯7中，由光纤插芯7实现耦合光束的射出。As shown in Figure 13, the laser chip 11 is tilted from 1° to 10° so that the chip axis of the laser chip 11 does not coincide with the central axis of the lens 3, and the central axis of the lens 3 is Along the horizontal direction, there is an angle between the optical axis of the tilted laser chip 11 and the central axis of the lens 3. Since the optical axis of the optical fiber ferrule 7 is horizontal, the optical axis of the optical fiber ferrule 7 and the optical axis of the laser chip 11 are also at an angle. The optical axis of the tilted laser chip 11 is shown in Figure 13 as the dotted line on the left side of the arrow, the central axis of the lens 3 is shown in Figure 13 as the solid line in the middle of the arrow, and the optical axis of the optical fiber ferrule 7 is shown as Figure 13 shows the part of the solid line pointed to by the arrow on the right. Taking the tilted laser chip 11 to emit three light waves as an example, the three divergent light waves are converged and emitted after passing through the lens 3, and the optical axes of the three divergent light waves do not coincide with the central axis of the lens 3. After the converged light waves are filtered by the first filter 6, the light waves that meet the band requirements are coupled into the optical fiber ferrule 7 in the adapter 4, and the optical fiber ferrule 7 realizes the emission of the coupled light beam.

如果激光器芯片11按照正常角度实现同轴封装，即激光器芯片11发出光的光轴与透镜3的中心轴重合，那么激光器芯片11发射的光波经透镜3汇聚和第一滤波片6滤波后耦合进光纤插芯7时，汇聚后的光波进入光纤插芯7内的进光轴将与光纤插芯7的光轴重合。也就是说，激光器芯片11在按照正常角度安装时，激光器芯片11、透镜3、第一滤波片6和光纤插芯7之间会形成一条固定的光信号传输路径(原光路)，即由激光器芯片11发出光的光轴射出的光波经过透镜3的中心轴和第一滤波片6后会耦合进光纤插芯7的光轴并射出，那么会导致在由光纤插芯7向接收器组件9发射光信号时，其中一部分的光信号会沿发射光信号的传输路径可逆的发射回激光器芯片11中，即该由右至左发射的光信号经过第一滤波片6，沿透镜3的中心轴进入激光器芯片11发出光的光轴，进而进入激光器组件1内，导致激光器组件1发光的性能变差。If the laser chip 11 is coaxially packaged at a normal angle, that is, the optical axis of the laser chip 11 coincides with the central axis of the lens 3, then the light wave emitted by the laser chip 11 is converged by the lens 3 and filtered by the first filter 6 and then coupled into When the optical fiber ferrule 7 is used, the optical axis of the converged light wave entering the optical fiber ferrule 7 will coincide with the optical axis of the optical fiber ferrule 7. In other words, when the laser chip 11 is installed at a normal angle, a fixed optical signal transmission path (original optical path) will be formed between the laser chip 11, the lens 3, the first filter 6 and the optical fiber ferrule 7. The light wave emitted from the optical axis of the light emitted by the chip 11 passes through the central axis of the lens 3 and the first filter 6 and then is coupled into the optical axis of the optical fiber ferrule 7 and emitted, which will cause the optical fiber ferrule 7 to transfer to the receiver assembly 9 When the optical signal is emitted, part of the optical signal will be reversibly emitted back to the laser chip 11 along the transmission path of the emitted optical signal, that is, the optical signal emitted from right to left passes through the first filter 6 along the central axis of the lens 3. It enters the optical axis of the laser chip 11 to emit light, and then enters the laser assembly 1, resulting in poor performance of the laser assembly 1 to emit light.

因此，采用本实施例提供的倾斜的激光器芯片11，其反射的光波不会沿原光路可逆的回到激光器芯片中，在由激光器组件1发射的光波耦合进光纤插芯7时，经过光纤插芯7端面反射回来的光波不会沿原传输路径返回，也就不会通过激光器芯片11发出光的光轴进入激光器组件1内。可见，通过将激光器芯片11进行偏心和倾斜一定角度处理，改变激光器芯片11发出光的光轴方向，可以降低光模块内的反射光再次进入激光器组件1中的可能性，进而避免影响激光器组件1的发光性能。Therefore, with the inclined laser chip 11 provided in this embodiment, the reflected light wave will not reversibly return to the laser chip along the original optical path. When the light wave emitted by the laser assembly 1 is coupled into the optical fiber ferrule 7, it passes through the optical fiber insert. The light waves reflected from the end surface of the core 7 will not return along the original transmission path, and will not enter the laser assembly 1 through the optical axis of the laser chip 11 emitting light. It can be seen that by decentering and tilting the laser chip 11 to a certain angle, changing the optical axis direction of the light emitted by the laser chip 11 can reduce the possibility of the reflected light in the optical module entering the laser assembly 1 again, thereby avoiding affecting the laser assembly 1. The luminous performance.

为进一步阻隔反射光和漫反射等杂散光，本实施例提供的光模块，在透镜3的出光口端设置阻隔件5，如图10、图11和图12所示。阻隔件5的大小可保证激光器芯片11的出射光束通过，不会对激光器芯片11发射的光产生损耗。In order to further block stray light such as reflected light and diffuse reflection, the optical module provided in this embodiment is provided with a blocking member 5 at the light exit end of the lens 3, as shown in FIG. 10, FIG. 11, and FIG. The size of the blocking member 5 can ensure that the emitted light beam of the laser chip 11 passes without causing loss of light emitted by the laser chip 11.

具体地，管体2内安装有阻隔件5，阻隔件5位于透镜3和适配器4之间，在本申请的某些实施例中，阻隔件5位于透镜3和第一滤波片6之间；激光器芯片11发出的光波，经透镜3汇聚进入阻隔件5，阻隔件5内传输的光经由第一滤波片6后再耦合进光纤插芯7，由光纤插芯7实现耦合光束的射出。Specifically, a blocking member 5 is installed in the tube body 2, and the blocking member 5 is located between the lens 3 and the adapter 4. In some embodiments of the present application, the blocking member 5 is located between the lens 3 and the first filter 6; The light waves emitted by the laser chip 11 enter the barrier 5 through the lens 3, and the light transmitted in the barrier 5 passes through the first filter 6 and then is coupled into the optical fiber ferrule 7, and the optical fiber ferrule 7 realizes the emission of the coupled beam.

本实施例提供的阻隔件5，采用锥形结构，以阻挡反射光再通过阻隔件5返回激光器组件1中。为此，如图14(a)、图14(b)、图14(c)、图14(d)所示，阻隔件5的靠近透镜3的一端设有进光口51，阻隔件5的靠近适配器4的一端设有出光口52；由进光口51至出光口52，阻隔件5内腔的53的截面面积逐渐减小，使得阻隔件5呈现一头大一头小的结构。光通道53的表面为过度面，使光通道53呈锥形。The barrier 5 provided in this embodiment adopts a tapered structure to block the reflected light from returning to the laser assembly 1 through the barrier 5. To this end, as shown in Figure 14 (a), Figure 14 (b), Figure 14 (c), Figure 14 (d), the end of the barrier 5 close to the lens 3 is provided with a light inlet 51, the barrier 5 An end close to the adapter 4 is provided with a light outlet 52; from the light inlet 51 to the light outlet 52, the cross-sectional area of the inner cavity 53 of the barrier 5 gradually decreases, so that the barrier 5 presents a structure that is larger and smaller. The surface of the light channel 53 is a transition surface, so that the light channel 53 is tapered.

如图15所示，阻隔件5通过进光口51与透镜3贴合安装，激光器芯片(简称芯片)11发出的光为发散光，在经过透镜3后发生汇聚，汇聚光束的光斑由大光斑逐渐转变为小光斑；而阻隔件5的进光口51大于出光口52，进光口51可以包容大光斑的光束进入，小光斑从出光口52射出，再由进光口51向出光口52尺寸过度的过程中，汇聚光束的光斑也在逐渐变小，汇聚光束形状的外廓与阻隔件5的内腔内廓形状相同，使得阻隔件5贴合在透镜3上时，透镜3汇聚的光波可大部分通过阻隔件5，不会对光产生损耗。As shown in Fig. 15, the barrier 5 is attached to the lens 3 through the light inlet 51, and the light emitted by the laser chip (chip for short) 11 is divergent light, which converges after passing through the lens 3. The spot of the condensed beam is changed from the large spot It gradually transforms into a small spot; and the light inlet 51 of the barrier 5 is larger than the light outlet 52, and the light inlet 51 can accommodate the light beam with a large spot. The small spot is emitted from the light outlet 52, and then from the light inlet 51 to the light outlet 52 In the process of excessive size, the spot of the converging beam is gradually becoming smaller. The shape of the converging beam is the same as the inner shape of the inner cavity of the barrier 5, so that when the barrier 5 is attached to the lens 3, the lens 3 converges Most of the light waves can pass through the barrier 5 without loss of light.

而为阻挡反射光，如图16所示，阻隔件5的靠近光纤插芯7的一端设计成小尺寸，即出光口52的尺寸小于进光口51的尺寸。光波照射在光纤插芯7的端面的光为汇聚光，而汇聚光反射回来后会变为发散光，即反射光的光斑由小光斑转变为大光斑，以大光斑的形式反射到阻隔件5的出光口52端。而由于出光口52较小，出光口52的直径小于反射光光斑的直径，使得大部分反射光照射在阻隔件5的外壁上，以阻挡一部分光波由出光口52进入阻隔件5内，进而避免通过阻隔件5返回进激光器组件1。In order to block the reflected light, as shown in FIG. 16, the end of the blocking member 5 close to the optical fiber ferrule 7 is designed to have a small size, that is, the size of the light outlet 52 is smaller than the size of the light inlet 51. The light irradiated by the light wave on the end face of the optical fiber ferrule 7 is convergent light, and the convergent light will become divergent light after being reflected back, that is, the light spot of the reflected light changes from a small spot to a large spot, and it is reflected to the barrier 5 in the form of a large spot. The light exit 52 end. Since the light outlet 52 is small, the diameter of the light outlet 52 is smaller than the diameter of the reflected light spot, so that most of the reflected light is irradiated on the outer wall of the barrier 5 to block part of the light waves from entering the barrier 5 through the light outlet 52, thereby avoiding Return into the laser assembly 1 through the barrier 5.

为保证激光器芯片11做偏心和倾斜处理后的耦合效率，本实施例提供的光模块，将适配器4端面的倾斜角度增大。具体地，如图12所示，适配器4的远离激光器组件1的一端设有喇叭形的开口41，开口41呈现一头大一头小的结构，远离光纤插芯7端面的一端尺寸较大，靠近光纤插芯7端面的一端尺寸较小，使开口41的内壁呈现倾斜状态。开口41起到导向作用，便于外部光纤***。In order to ensure the coupling efficiency of the laser chip 11 after eccentricity and tilt processing, the optical module provided in this embodiment increases the inclination angle of the end face of the adapter 4. Specifically, as shown in FIG. 12, the end of the adapter 4 away from the laser assembly 1 is provided with a horn-shaped opening 41. The opening 41 presents a structure with a large end and a small end. The end away from the end face of the optical fiber ferrule 7 has a larger size and is close to the optical fiber. The size of one end of the end face of the ferrule 7 is small, so that the inner wall of the opening 41 is inclined. The opening 41 serves as a guide to facilitate the insertion of external optical fibers.

由以上技术方案可知，本申请实施例提供的一种光模块，包括激光器组件1、管体2和适配器4，激光器组件1伸入管体2的一端设有透镜3，激光器组件1中倾斜安装有激光器芯片11，对激光器芯片11进行偏心和倾斜处理，使激光器芯片11发出光的光轴与透镜3的中心轴呈角度，以改变发射光的传输路径，进而避免反射光沿原光信号传输路径进入激光器组件1中。适配器4固定在管体2的另一端，适配器4内安装有光纤插芯7，光纤插芯7的光轴与激光器芯片11发出光的光轴呈角度；激光器芯片11发出的光，经透镜3汇聚再耦合进光纤插芯7，进入光纤插芯7的进光轴与光纤插芯7的光轴不重合，可避免反射光沿原固定的光信号传输路径传输，进而不会沿激光器芯片11发出光的光轴进入激光器组件1内。It can be seen from the above technical solutions that an optical module provided by an embodiment of the present application includes a laser assembly 1, a tube body 2 and an adapter 4. The laser assembly 1 is provided with a lens 3 at one end of the tube body 2, and the laser assembly 1 is installed obliquely There is a laser chip 11, the laser chip 11 is decentered and tilted, so that the optical axis of the laser chip 11 is at an angle to the central axis of the lens 3 to change the transmission path of the emitted light, thereby avoiding the transmission of the reflected light along the original light signal The path enters the laser assembly 1. The adapter 4 is fixed at the other end of the tube body 2. The adapter 4 is equipped with an optical fiber ferrule 7. The optical axis of the optical fiber ferrule 7 is at an angle to the optical axis of the laser chip 11; the light emitted by the laser chip 11 passes through the lens 3. Converge and then couple into the optical fiber ferrule 7, and the optical axis of the optical fiber ferrule 7 does not coincide with the optical axis of the optical fiber ferrule 7, which can prevent the reflected light from being transmitted along the original fixed optical signal transmission path, and then not along the laser chip 11. The optical axis of the emitted light enters the laser assembly 1.

激光器芯片发出的光为发散光，在透镜处发生汇聚，汇聚光束的光斑由大光斑逐渐转变为小光斑；而阻隔件的进光口大于出光口，进光口可以包容大光斑的光束进入，小光斑从出光***出，阻隔件内腔的截面面积由进光口至出光口逐渐减小，汇聚光束的光斑也在逐渐变小，使得汇聚光束形状的外廓与阻隔件的内腔形状相同，大部分的汇聚光束可以通过阻隔件；而在适配器处产生的反射光，向阻隔件方向传播时呈现发散状态，光斑较大，而阻隔件位于适配器一段的出光口较小，大部分反射光被阻隔件的外壁阻拦，无法通过阻隔件的出光口回到激光器芯片中，避免反射光对激光器芯片出光产生影响。The light emitted by the laser chip is divergent light, which is converged at the lens, and the spot of the condensed beam is gradually changed from a large spot to a small spot; and the light entrance of the barrier is larger than the light exit, and the light entrance can contain the light beam with a large spot. A small light spot is emitted from the light outlet, the cross-sectional area of the inner cavity of the barrier gradually decreases from the light inlet to the light outlet, and the spot of the converged beam is also gradually reduced, making the outer profile of the convergent beam shape the same as the inner cavity of the barrier , Most of the convergent light beam can pass through the barrier; while the reflected light generated at the adapter shows a divergent state when propagating in the direction of the barrier, the light spot is larger, and the light exit of the barrier at the adapter section is small, and most of the reflected light It is blocked by the outer wall of the barrier and cannot return to the laser chip through the light exit port of the barrier, so as to prevent the reflected light from affecting the light output of the laser chip.

阻隔件的形态可以阻拦大部分的反射光回到激光芯片中，结合激光器芯片进行偏心和倾斜处理，使得反射回来的光偏离原光路，进一步使得大部分的反射光反射至阻隔件的外壁上，减少通过阻隔件出光口回到激光器芯片的光。The shape of the barrier can block most of the reflected light from returning to the laser chip, combined with the laser chip for eccentricity and tilt processing, so that the reflected light deviates from the original optical path, and further causes most of the reflected light to be reflected to the outer wall of the barrier. Reduce the light returning to the laser chip through the light exit of the barrier.

可见，本实施例提供的光模块，不会对激光器芯片11发射的光产生损耗，并可实现反射光的隔离，降低光模块内的反射光再次进入激光器组件1中的可能性，进而避免影响激光器组件1的发光性能，保证光模块的耦合效率。It can be seen that the optical module provided in this embodiment will not cause loss to the light emitted by the laser chip 11, and can realize the isolation of reflected light, reduce the possibility that the reflected light in the optical module enters the laser assembly 1 again, thereby avoiding influence The luminous performance of the laser assembly 1 ensures the coupling efficiency of the optical module.

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; and 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:

管体，设置在所述光模块的壳体内；The tube body is arranged in the housing of the optical module;

激光器组件，固定在所述管体的一端，包括激光器芯片及透镜，所述透镜可汇聚所述激光器芯片发出的光；A laser component, fixed at one end of the tube body, including a laser chip and a lens, the lens can converge the light emitted by the laser chip;

阻隔件，位于所述管体内，靠近所述透镜的一端设有进光口，另一端设有出光口，沿着所述阻隔件的所述进光口至所述出光口的方向，所述阻隔件内腔的横截面面积逐渐变小；The barrier is located in the tube body, one end close to the lens is provided with a light inlet, and the other end is provided with a light outlet, along the direction from the light inlet to the light outlet of the barrier, the The cross-sectional area of the inner cavity of the barrier gradually becomes smaller;

适配器，固定在所述管体的另一端，可接收通过所述阻隔件的光。The adapter is fixed at the other end of the tube body and can receive light passing through the barrier.
根据权利要求1所述的光模块，其特征在于，所述激光器芯片出光的光轴与所述透镜的中心轴呈角度；The optical module according to claim 1, wherein the optical axis of the laser chip emits light at an angle to the central axis of the lens;

所述适配器内安装有光纤插芯，所述光纤插芯的光轴与所述激光器芯片出光的光轴呈角度。An optical fiber ferrule is installed in the adapter, and the optical axis of the optical fiber ferrule is at an angle to the optical axis of the laser chip.
根据权利要求1所述的光模块，其特征在于，还包括：位于所述阻隔件和所述适配器之间的第一滤波片，所述第一滤波片相对所述适配器轴线呈角度安装，使所述阻隔件传出的光经由所述第一滤波片进入所述适配器中。The optical module according to claim 1, further comprising: a first filter between the blocking member and the adapter, and the first filter is installed at an angle relative to the axis of the adapter, so that The light transmitted from the blocking member enters the adapter through the first filter.
根据权利要求1所述的光模块，其特征在于，所述管体包括中空的圆管体和中空的方管体，所述圆管体固定在所述方管体的外侧壁，所述圆管体与所述方管体连通；所述圆管体与所述激光器组件嵌套连接，所述方管体的与所述圆管体相对的一侧设有通孔，所述通孔用于实现所述方管体与所述适配器的嵌套连接。The optical module according to claim 1, wherein the tube body comprises a hollow round tube body and a hollow square tube body, the round tube body is fixed on the outer side wall of the square tube body, and the round tube body The pipe body communicates with the square pipe body; the round pipe body is nested and connected with the laser assembly, and the side of the square pipe body opposite to the round pipe body is provided with a through hole, and the through hole is used for To realize the nested connection of the square tube body and the adapter.
根据权利要求3所述的光模块，其特征在于，还包括：位于所述第一滤波片上方的第二滤波片，所述第二滤波片相对所述光纤插芯的光轴平行设置。The optical module according to claim 3, further comprising: a second filter located above the first filter, and the second filter is arranged parallel to the optical axis of the optical fiber ferrule.