WO2019100703A1

WO2019100703A1 - Optical coupling module and electronic device

Info

Publication number: WO2019100703A1
Application number: PCT/CN2018/091855
Authority: WO
Inventors: 张院良; 曾小军; 王波
Original assignee: 华为技术有限公司
Priority date: 2017-11-23
Filing date: 2018-06-19
Publication date: 2019-05-31
Also published as: CN109828335A

Abstract

Provided are an optical coupling module and an electronic device, belonging to the field of communications. The optical coupling module comprises: an optical component and a filter, wherein, a fiber lens is provided on a first surface of the optical component close to an optical fiber, a receiving lens and an emitting lens are provided on a second surface of the optical component close to a laser and a detector; a first groove is further provided on the optical component, the filter is placed obliquely in the first groove, an angle exists between the filter and one side of the first groove close to the first surface, and the two optical surfaces of the filter are both coated with a functional film; a first optical signal from the fiber lens is reflected by the functional film coated on an optical surface of the filter to the receiving lens, and a second optical signal from the emitting lens is reflected by the functional film coated on the other optical surface of the filter to the fiber lens. The present application can avoid affecting the performance of the laser and reduce the volume of the optical coupling module.

Description

一种光学耦合模块及电子设备Optical coupling module and electronic device

本申请要求于2017年11月23日提交中国国家知识产权局、申请号为201711185738.X、发明名称为“一种光学耦合模块及电子设备”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 priority to Chinese Patent Application No. 200911185738.X, entitled "Optical Coupling Modules and Electronic Devices", filed on November 23, 2017, the entire contents of which are hereby incorporated by reference. Combined in this application.

技术领域Technical field

本申请涉及通信领域，特别涉及一种光学耦合模块及电子设备。The present application relates to the field of communications, and in particular, to an optical coupling module and an electronic device.

背景技术Background technique

光纤通信技术是现代通信的主要支柱技术之一。在光纤通信领域中，电子设备可以使用光学耦合***接收来自光纤中的光信号，也可以使用光学耦合***向光纤中发送光信号，以实现光纤通信。Optical fiber communication technology is one of the main pillar technologies of modern communication. In the field of fiber-optic communication, an electronic device can receive an optical signal from an optical fiber using an optical coupling system, or can transmit an optical signal to an optical fiber using an optical coupling system to implement optical fiber communication.

参见图1，光学耦合***包括光学组件1和滤波片2，光学组件1的第一表面上设有光纤透镜11，第二表面上设有接收透镜12和发射透镜13，第一表面和第二表面可以垂直；光学组件1还设有凹槽14和第一倾斜面15，凹槽14位于第一倾斜面15和第一表面之间，凹槽14靠近第一表面的侧面为第二倾斜面16。滤波片2通过光学胶粘贴在第二倾斜面16上，其中，当波长为预设第一波长的光信号传输至滤波片2时该光信号穿透过滤波片2，当波长为预设第二波长的光信号传输至滤波片2时该光信号被滤波片2反射。Referring to FIG. 1, an optical coupling system includes an optical component 1 and a filter 2, a first surface of the optical component 1 is provided with a fiber lens 11, and a second surface is provided with a receiving lens 12 and an emitting lens 13, a first surface and a second surface. The surface may be vertical; the optical component 1 is further provided with a groove 14 and a first inclined surface 15, the groove 14 is located between the first inclined surface 15 and the first surface, and the side of the groove 14 adjacent to the first surface is a second inclined surface 16. The filter 2 is pasted on the second inclined surface 16 by an optical glue, wherein when the optical signal having the wavelength of the preset first wavelength is transmitted to the filter 2, the optical signal penetrates the filter wave plate 2, when the wavelength is preset When the optical signal of the second wavelength is transmitted to the filter 2, the optical signal is reflected by the filter 2.

仍参见图1，光纤透镜11与光纤相对设置，接收透镜12与电子设备上的探测器相对设置，发射透镜13与电子设备上的激光器相对设置。光纤透镜11可以接收来自光纤上的第一波长的第一光信号，第一光信号传输至滤波片2，穿过滤波片2并继续传输至第一倾斜面15，第一倾斜面15将第一光信号反射至接收透镜12，接收透镜12再将第一光信号射向探测器。发射透镜13可以接收来自激光器发射的第二波长的第二光信号，第二光信号传输至滤波片2，滤波片2将第二光信号反射至光纤透镜11，光纤透镜11再将第二光信号射向光纤。Still referring to Fig. 1, the fiber optic lens 11 is disposed opposite the optical fiber, the receiving lens 12 is disposed opposite the detector on the electronic device, and the transmitting lens 13 is disposed opposite the laser on the electronic device. The fiber lens 11 can receive a first optical signal from a first wavelength on the optical fiber, the first optical signal is transmitted to the filter 2, passes through the filter 2 and continues to be transmitted to the first inclined surface 15, and the first inclined surface 15 An optical signal is reflected to the receiving lens 12, which in turn directs the first optical signal toward the detector. The transmitting lens 13 can receive a second optical signal from a second wavelength emitted by the laser, the second optical signal is transmitted to the filter 2, the filter 2 reflects the second optical signal to the fiber lens 11, and the fiber lens 11 and the second light The signal is directed at the fiber.

由于滤波片2与第二倾斜面16之间通过光学胶粘贴，使得在滤波片2与第二倾斜面16之间可能会存在气泡，这样会使经过气泡的部分第一光信号会被滤波片2反射至激光器，会影响激光器的性能；另外接收透镜12和发射透镜13之间间隔距离较大，导致目前的光学耦合模块体积较大。Since the filter 2 and the second inclined surface 16 are pasted by the optical glue, bubbles may exist between the filter 2 and the second inclined surface 16, so that part of the first optical signal passing through the bubble is filtered. The reflection of the sheet 2 to the laser affects the performance of the laser; in addition, the distance between the receiving lens 12 and the emitting lens 13 is relatively large, resulting in a large volume of the current optical coupling module.

发明内容Summary of the invention

为了避免影响激光器的性能以及减小光学耦合模块的体积，本申请实施例提供了一种光学耦合模块及电子设备。所述技术方案如下：In order to avoid affecting the performance of the laser and reducing the volume of the optical coupling module, the embodiment of the present application provides an optical coupling module and an electronic device. The technical solution is as follows:

第一方面，本申请提供了一种光学耦合模块，包括：光学组件和滤波片，所述光学组件靠近光纤的第一表面上设有光纤透镜，所述光学组件靠近激光器和探测器的第二表面上设有接收透镜和发射透镜；所述光学组件还设有第一凹槽，所述滤波片倾斜放置在所述第一凹槽中，所述滤波片与所述第一凹槽靠近所述第一表面的一侧面之间存在夹角，所述滤波片的两个光学面上均镀有功能膜；来自所述光纤透镜的第一光信号被所述滤波片的一光学面上镀有的功能膜反射至所述接收透镜，以及来自所述发射透镜的第二光信号被所述滤波片的另一光学面上镀有的功能膜反射至所述光纤透镜，所述第一光信号的第一波长和所述第二光信号的第二波长不同。由于所述滤波片与所述第一凹槽靠近所述第一表面的一侧面之间存在夹角空隙，这样可以避光将第一光信号反射至激活器，避免影响激光器的性能。又由于使用滤波片的两个光学面反射第一光信号和第二光信号，这样可以减小接收透镜和发射透镜之间的间距，从而减小光学耦合模块的体积。In a first aspect, the present application provides an optical coupling module comprising: an optical component and a filter, the optical component being provided with a fiber lens on a first surface of the optical fiber, the optical component being adjacent to the second of the laser and the detector a receiving lens and an emitting lens are disposed on the surface; the optical component is further provided with a first groove, the filter is obliquely placed in the first groove, and the filter is adjacent to the first groove An angle exists between a side surface of the first surface, and the two optical surfaces of the filter are plated with a functional film; the first optical signal from the fiber lens is plated on an optical surface of the filter a functional film is reflected to the receiving lens, and a second optical signal from the emitting lens is reflected by the functional film plated on the other optical surface of the filter to the fiber lens, the first light The first wavelength of the signal is different from the second wavelength of the second optical signal. Since there is an angular gap between the filter and a side of the first groove adjacent to the first surface, the first optical signal can be reflected from the activator to avoid affecting the performance of the laser. Also, since the two optical surfaces of the filter are used to reflect the first light signal and the second light signal, the spacing between the receiving lens and the emitting lens can be reduced, thereby reducing the volume of the optical coupling module.

在第一方面的一种可能的实现方式中，所述滤波片靠近所述第一表面的一光学面上镀有第一功能膜，另一光学面上镀有第二功能膜；所述第一功能膜用于反射所述第一光信号并透过所述第二光信号，所述第二功能膜用于反射所述第二光信号；或者，所述第一功能膜用于反射所述第二光信号并透过所述第一光信号，所述第二功能膜用于反射所述第一光信号。这样可以实现使用滤波片的两个光学面分别反射第一光信号和第二光信号。In a possible implementation manner of the first aspect, an optical surface of the filter near the first surface is plated with a first functional film, and the other optical surface is plated with a second functional film; a functional film for reflecting the first optical signal and transmitting the second optical signal, the second functional film for reflecting the second optical signal; or the first functional film for reflecting The second optical signal is transmitted through the first optical signal, and the second functional film is used to reflect the first optical signal. This makes it possible to reflect the first optical signal and the second optical signal, respectively, using the two optical faces of the filter.

在第一方面的一种可能的实现方式中，在所述第二功能膜用于反射所述第二光信号时，所述第二功能膜还用于透射部分所述第二光信号。这样可以减小第二光信号的光强度。In a possible implementation manner of the first aspect, the second functional film is further configured to transmit a portion of the second optical signal when the second functional film is configured to reflect the second optical signal. This can reduce the light intensity of the second optical signal.

在第一方面的一种可能的实现方式中，还包括：第一固定台，所述第一固定台安装在所述第一凹槽中且位于所述滤波片和所述第一表面之间，所述第一固定台设有第一倾斜面；所述第一固定台还位于所述第一光信号的传输路径和所述第二光信号的传输路径的一侧，所述滤波片靠近所述第一表面的光学面固定在所述第一倾斜面上。这样可以通过第一固定台可将滤波片倾斜放置在第一凹槽中。In a possible implementation manner of the first aspect, the method further includes: a first fixing station installed in the first groove and located between the filter and the first surface The first fixed stage is provided with a first inclined surface; the first fixed stage is further located at a side of a transmission path of the first optical signal and a transmission path of the second optical signal, and the filter is close to The optical surface of the first surface is fixed to the first inclined surface. This allows the filter to be placed obliquely in the first recess by the first fixing station.

在第一方面的一种可能的实现方式中，还包括：第二固定台，所述第二固定台安装在所述第一凹槽中且位于所述滤波片和所述第一表面之间，所述第二固定台设有第二倾斜面；所述第一光信号的传输路径和所述第二光信号的传输路径均位于所述第二固定台和所述第一固定台之间，所述滤波片靠近所述第一表面的光学面固定在所述第二倾斜面上。这样可以通过第一固定台和第二固定台可将滤波片倾斜放置在第一凹槽中，并放置的更加牢固。In a possible implementation manner of the first aspect, the method further includes: a second fixing station installed in the first recess and located between the filter and the first surface The second fixed stage is provided with a second inclined surface; the transmission path of the first optical signal and the transmission path of the second optical signal are both located between the second fixed stage and the first fixed stage The optical surface of the filter near the first surface is fixed on the second inclined surface. In this way, the filter can be placed obliquely in the first recess by the first fixed stage and the second fixed stage, and placed more firmly.

在第一方面的一种可能的实现方式中，所述第一凹槽靠近所述第一表面的一侧面上设有第二凹槽，所述第一光信号的传输路径和所述第二光信号的传输路径经过所述第二凹槽的底面，所述第一光信号在所述第二凹槽的底面上的入射角和所述第二光信号在所述第二凹槽的底面上的入射角均不等于90度。这样可以防止第一光信号中存在部分光信号被第二凹槽的底面反射回光纤中，以及防止第二光信号中存在部分光信号被第二凹槽的底面反射回激光器中。In a possible implementation manner of the first aspect, a second groove is disposed on a side of the first groove adjacent to the first surface, a transmission path of the first optical signal, and the second a transmission path of the optical signal passes through a bottom surface of the second groove, an incident angle of the first optical signal on a bottom surface of the second groove, and the second optical signal is on a bottom surface of the second groove The angle of incidence above is not equal to 90 degrees. This prevents a portion of the optical signal in the first optical signal from being reflected back into the fiber by the bottom surface of the second groove, and prevents a portion of the optical signal in the second optical signal from being reflected back into the laser by the bottom surface of the second groove.

在第一方面的一种可能的实现方式中，所述第二凹槽的底面镀有增透膜。这样可以提高第二凹槽的底面透过光信号性能，以及降低第二凹槽的底面反射光信号性能。In a possible implementation manner of the first aspect, the bottom surface of the second groove is coated with an anti-reflection film. This can improve the performance of the light transmission signal of the bottom surface of the second groove and reduce the performance of the reflected light signal of the bottom surface of the second groove.

在第一方面的一种可能的实现方式中，所述第一光信号在所述第一凹槽的底面上的入射角和所述第二光信号在所述第一凹槽的底面上的入射角均不等于90度。这样可以防止第一光信号中存在部分光信号被第一凹槽的底面反射回光纤中，以及防止第二光信号中存在部分光信号被第一凹槽的底面反射回激光器中。In a possible implementation manner of the first aspect, an incident angle of the first optical signal on a bottom surface of the first recess and a second optical signal on a bottom surface of the first recess The angle of incidence is not equal to 90 degrees. This prevents a portion of the optical signal in the first optical signal from being reflected back into the fiber by the bottom surface of the first groove, and prevents a portion of the optical signal in the second optical signal from being reflected back into the laser by the bottom surface of the first groove.

在第一方面的一种可能的实现方式中，所述第一光信号在所述滤波片上的入射角和所述第二光信号在所述滤波片上的入射角均大于44度且小于46度。In a possible implementation manner of the first aspect, an incident angle of the first optical signal on the filter and an incident angle of the second optical signal on the filter are both greater than 44 degrees and less than 46 degrees. .

在第一方面的一种可能的实现方式中，所述接收透镜的中心和所述发射透镜的中心之间的距离a和所述滤波片的厚度b之间满足的关系为：

In a possible implementation of the first aspect, the relationship between the distance a between the center of the receiving lens and the center of the transmitting lens and the thickness b of the filter is:

在第一方面的一种可能的实现方式中，所述第一凹槽靠近所述第一表面的侧面上镀有增透膜。这样可以提高该侧面透过光信号性能，以及降低该侧面反射光信号性能。In a possible implementation manner of the first aspect, the first groove is coated with an anti-reflection film on a side of the first surface. This can improve the performance of the side transmitted optical signal and reduce the performance of the side reflected light signal.

在第一方面的一种可能的实现方式中，所述第一凹槽的底面镀有增透膜。这样可以提高第一凹槽的底面透过光信号性能，以及降低第一凹槽的底面反射光信号性能。In a possible implementation manner of the first aspect, the bottom surface of the first groove is plated with an anti-reflection film. This can improve the performance of the light transmission signal of the bottom surface of the first groove and the performance of the reflected light signal of the bottom surface of the first groove.

第二方面，本申请提供了一种电子设备，包括：激光器、探测器和如第一方面或第一方面任一种可能的实现方式提供的所述光学耦合模块；所述激光器与所述光学耦合模块的发射透镜相对设置，所述探测器与所述光学耦合模块的接收透镜相对设置；所述光学耦合模块，用于将来自光纤的第一光信号反射至所述探测器，将所述激光器发射的第二光信号反射至所述光纤，所述第一光信号的第一波长和所述第二光信号的第二波长不同。In a second aspect, the present application provides an electronic device comprising: a laser, a detector, and the optical coupling module provided by any of the first aspect or the first aspect of the first aspect; the laser and the optical a transmitting lens of the coupling module is oppositely disposed, the detector is disposed opposite to the receiving lens of the optical coupling module; the optical coupling module is configured to reflect a first optical signal from the optical fiber to the detector, A second optical signal emitted by the laser is reflected to the optical fiber, the first wavelength of the first optical signal being different from the second wavelength of the second optical signal.

在第二方面的一种可能的实现方式中，还包括：功率监控器，所述功率监控器与所述激光器连接；所述功率监控器，用于接收所述光学耦合模块反射的部分所述第二光信号，根据部分所述第二光信号调整所述激光器的发射功率。这样可以通过功率监控器调整激光器的发射功率，进而调整激光器发射的第二光信号的光强度。In a possible implementation manner of the second aspect, the method further includes: a power monitor, the power monitor is connected to the laser; and the power monitor is configured to receive the portion of the optical coupling module that is reflected The second optical signal adjusts a transmit power of the laser according to the portion of the second optical signal. In this way, the power level of the laser can be adjusted by the power monitor to adjust the light intensity of the second light signal emitted by the laser.

附图说明DRAWINGS

图1是相关技术的一种光学耦合模块的结构示意图；1 is a schematic structural view of an optical coupling module of the related art;

图2是本申请实施例提供的一种光学耦合模块的结构示意图；2 is a schematic structural diagram of an optical coupling module according to an embodiment of the present application;

图3是本申请实施例提供的另一种光学耦合模块的结构示意图；3 is a schematic structural diagram of another optical coupling module according to an embodiment of the present application;

图4是本申请实施例提供的另一种光学耦合模块的结构示意图；4 is a schematic structural diagram of another optical coupling module according to an embodiment of the present application;

图5是本申请实施例提供的第一固定台的结构示意图；FIG. 5 is a schematic structural diagram of a first fixing station according to an embodiment of the present application; FIG.

图6是本申请实施例提供的另一种光学耦合模块的结构示意图；6 is a schematic structural diagram of another optical coupling module according to an embodiment of the present application;

图7是本申请实施例提供的第一固定台的截面图；Figure 7 is a cross-sectional view of a first fixing station provided by an embodiment of the present application;

图8是本申请实施例提供的第一固定台和第二固定台的结构示意图；8 is a schematic structural diagram of a first fixed station and a second fixed station according to an embodiment of the present application;

图9是本申请实施例提供的第二凹槽的结构示意图；9 is a schematic structural view of a second recess provided by an embodiment of the present application;

图10是本申请实施例提供的另一种光学耦合模块的结构示意图；FIG. 10 is a schematic structural diagram of another optical coupling module according to an embodiment of the present disclosure;

图11是本申请实施例提供的另一种光学耦合模块的结构示意图；11 is a schematic structural diagram of another optical coupling module according to an embodiment of the present application;

图12是本申请实施例提供的另一种光学耦合模块的结构示意图；FIG. 12 is a schematic structural diagram of another optical coupling module according to an embodiment of the present disclosure;

图13是本申请实施例提供的光学组件的结构示意图；FIG. 13 is a schematic structural diagram of an optical component according to an embodiment of the present application; FIG.

图14是本申请实施例提供的光学组件的另一结构示意图；FIG. 14 is another schematic structural diagram of an optical component according to an embodiment of the present application; FIG.

图15是本申请实施例提供的光学组件的另一结构示意图；15 is another schematic structural diagram of an optical component according to an embodiment of the present application;

图16是本申请实施例提供的另一种光学耦合模块的结构示意图。FIG. 16 is a schematic structural diagram of another optical coupling module according to an embodiment of the present application.

具体实施方式Detailed ways

为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。In order to make the objects, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

参见图2，本申请实施例提供了一种光学耦合模块，包括：Referring to FIG. 2, an embodiment of the present application provides an optical coupling module, including:

光学组件1和滤波片2，光学组件1靠近光纤的第一表面上设有光纤透镜11，光学组件1靠近激光器和探测器的第二表面上设有接收透镜12和发射透镜13；The optical component 1 and the filter 2, the optical component 1 is disposed on the first surface of the optical fiber is provided with a fiber lens 11, the optical component 1 is adjacent to the laser and the second surface of the detector is provided with a receiving lens 12 and an emitting lens 13;

光学组件1还设有第一凹槽14，滤波片2倾斜放置在第一凹槽14中，滤波片2与第一凹槽14靠近第一表面的一侧面之间存在夹角，滤波片2的两个光学面(为图中2a和2b所标识的面)上均镀有功能膜；The optical component 1 is further provided with a first recess 14 , and the filter 2 is obliquely placed in the first recess 14 , and the filter 2 has an angle with a side of the first recess 14 adjacent to the first surface, and the filter 2 The two optical faces (the faces identified by 2a and 2b in the figure) are plated with a functional film;

来自光纤透镜11的第一光信号被滤波片2的一光学面上镀有的功能膜反射至接收透镜12，以及来自发射透镜13的第二光信号被滤波片2的另一光学面上镀有的功能膜反射至光纤透镜11，第一光信号的第一波长和第二光信号的第二波长不同。The first optical signal from the fiber lens 11 is reflected by the functional film plated on one optical surface of the filter 2 to the receiving lens 12, and the second optical signal from the transmitting lens 13 is plated on the other optical surface of the filter 2. Some of the functional films are reflected to the fiber lens 11, and the first wavelength of the first optical signal and the second wavelength of the second optical signal are different.

本申请实施例提供的光学耦合模块用于连接电子设备和光纤，该光学耦合模块可以是电子设备的组成部分。参见图2或3，光纤透镜11与光纤相对设置，光纤透镜11与光纤之间的距离可以等于光纤透镜11的焦距；接收透镜12与电子设备的探测器3相对设置，接收透镜12与探测器3之间的距离可以等于接收透镜12的焦距；发射透镜13与电子设备的激光器4相对设置，发射透镜13与激光器4之间的距离可以等于发射透镜13的焦距；探测器3和激光器4均集成在电子设备的基板5上。The optical coupling module provided by the embodiment of the present application is used to connect an electronic device and an optical fiber, and the optical coupling module may be an integral part of the electronic device. Referring to FIG. 2 or 3, the fiber lens 11 is disposed opposite to the optical fiber, and the distance between the fiber lens 11 and the optical fiber may be equal to the focal length of the fiber lens 11; the receiving lens 12 is disposed opposite to the detector 3 of the electronic device, and the receiving lens 12 and the detector are The distance between 3 may be equal to the focal length of the receiving lens 12; the emitting lens 13 is disposed opposite the laser 4 of the electronic device, the distance between the transmitting lens 13 and the laser 4 may be equal to the focal length of the transmitting lens 13; both the detector 3 and the laser 4 are It is integrated on the substrate 5 of the electronic device.

可选的，该基板可以为印制电路板(Printed Circuit Board，PCB)等。该激活器可以为垂直腔表面发射激光器(Vertical Cavity Surface Emitting Laser，VCSEL)等。Optionally, the substrate can be a Printed Circuit Board (PCB) or the like. The activator may be a Vertical Cavity Surface Emitting Laser (VCSEL) or the like.

第一光信号是光纤向光纤透镜11发射的光信号，第一光信号经过光纤透镜11后传输至滤波片2的一光学面上的功能膜，该功能膜将第一光信号反射至接收透镜12，接收透镜12将第一光信号在探测器3上汇聚成光斑并射入探测器3中。The first optical signal is an optical signal emitted by the optical fiber to the optical fiber lens 11. The first optical signal passes through the optical fiber lens 11 and is transmitted to a functional film on an optical surface of the filter 2, and the functional film reflects the first optical signal to the receiving lens. 12. The receiving lens 12 converges the first optical signal on the detector 3 into a spot and into the detector 3.

第二光信号是激光器4向发射透镜13发射的光信号，第二光信号经过发射透镜13后传输至滤波片2的另一光学面上的功能膜，该功能膜将第二光信号反射至光纤透镜11，光纤透镜11将第二光信号在光纤上汇聚成光斑并射入光纤中。The second optical signal is an optical signal emitted by the laser 4 to the transmitting lens 13, and the second optical signal is transmitted through the transmitting lens 13 to a functional film on the other optical surface of the filter 2, and the functional film reflects the second optical signal to The fiber lens 11 and the fiber lens 11 concentrate the second optical signal on the optical fiber into a spot and enter the optical fiber.

由于滤波片2与第一凹槽14靠近第一表面的一侧面之间存在的夹角空隙为空气，不存在其他填充物(如光学胶水等)，这样就不会出现因为填充物内部的缺陷(如气泡等)，将第一光信号反射至接收透镜12并传输至激光器4中，避免对激光器4的性能产生影响；由于通过滤波片2的两个光学面上的功能膜反射第一光信号和第二光信号，这样可以使接收透镜12和发射透镜13之间的间距小于现有光学耦合模块中的接收透镜和发射透镜之间的间距，从而可以减小光学耦合模块的体积。Since the gap between the filter 2 and the first groove 14 near a side of the first surface is air, there is no other filler (such as optical glue, etc.), so that there is no defect due to the inside of the filler. (such as bubbles, etc.), the first light signal is reflected to the receiving lens 12 and transmitted to the laser 4, to avoid affecting the performance of the laser 4; since the first light is reflected by the functional film on the two optical faces of the filter 2 The signal and the second optical signal are such that the spacing between the receiving lens 12 and the emitting lens 13 is smaller than the spacing between the receiving lens and the transmitting lens in the prior art optical coupling module, so that the volume of the optical coupling module can be reduced.

其中，第一表面和第二表面可以垂直或近似垂直，接收透镜12和光纤透镜13所在的第二表面为平面。假设第二表面与水平面平行或近似平行，由于滤波片2倾斜放置在第一凹槽14中，这样可以使滤波片2与第二表面之间存在朝向光纤透镜11且小于90度的预设第一夹角，所以滤波片2与第一表面之间也存在小于90度的夹角，且该夹角等于或约等于90度减去预设第一夹角。又由于第一光信号从光纤透镜11传输至滤波片2的传输路径可以垂直第一表面或近似垂直第一表面，这样第一光信号在滤波片2上的入射角也为小于90度的夹角，滤波片2可将第一光信号反射至接收透镜12。以及又由于第二光信号从发射透镜13传输至滤波片2的传输路径可能垂直第二表面或近似垂直第二表面。这样第二光信号在滤波片2上的入射角也为小于90度的夹角，滤波片2可将第二光信号反射至光纤透镜11。Wherein, the first surface and the second surface may be vertical or approximately vertical, and the second surface on which the receiving lens 12 and the fiber lens 13 are located is a plane. Assuming that the second surface is parallel or approximately parallel to the horizontal plane, since the filter 2 is placed obliquely in the first recess 14, this may cause a preset between the filter 2 and the second surface toward the fiber lens 11 and less than 90 degrees. An angle is included, so that there is also an angle of less than 90 degrees between the filter 2 and the first surface, and the angle is equal to or approximately equal to 90 degrees minus the preset first angle. Moreover, since the transmission path of the first optical signal from the fiber lens 11 to the filter 2 can be perpendicular to the first surface or the first vertical surface, the incident angle of the first optical signal on the filter 2 is also less than 90 degrees. The filter 2 can reflect the first optical signal to the receiving lens 12. And, again, the transmission path from the transmitting lens 13 to the filter 2 due to the second optical signal may be perpendicular to the second surface or approximately perpendicular to the second surface. Thus, the incident angle of the second optical signal on the filter 2 is also an angle less than 90 degrees, and the filter 2 can reflect the second optical signal to the fiber lens 11.

可选的，参见图2和图3，滤波片2与第一凹槽14靠近第一表面的一侧面之间存在夹角，这样滤波片2可以与第一凹槽14靠近第一表面的一侧面之间不接触，或者，滤波片2可以只有一条边与第一凹槽14靠近第一表面的一侧面之间接触，但其他部分不接触。Optionally, referring to FIG. 2 and FIG. 3, there is an angle between the filter 2 and a side of the first groove 14 adjacent to the first surface, such that the filter 2 can be adjacent to the first groove 14 near the first surface. There is no contact between the sides, or the filter 2 may have only one side in contact with a side of the first groove 14 adjacent to the first surface, but the other portions are not in contact.

滤波片2的光学面是指滤波片2中有光信号经过的表面，例如在图2和图3中所示的滤波片2中的表面2a和表面2b有光信号经过，所以表面2a和表面2b可以称为滤波片2的两个光学面。The optical surface of the filter 2 refers to a surface on which the optical signal passes in the filter 2, for example, the surface 2a and the surface 2b in the filter 2 shown in Figs. 2 and 3 have optical signals passing therethrough, so the surface 2a and the surface 2b can be referred to as two optical faces of the filter 2.

其中，参见图2和3，滤波片2靠近第一表面的一光学面上均镀有的功能膜为第一功能膜，另一光学面上镀有的功能膜为第二功能膜。在实现时，可以有如下两种实现方式，分别为：2 and 3, the functional film coated on the optical surface of the filter 2 near the first surface is the first functional film, and the functional film coated on the other optical surface is the second functional film. When implemented, there are two implementations, namely:

对于第一种实现方式，参见图2，滤波片2靠近第一表面的一光学面上镀有第一功能膜，另一光学面上镀有第二功能膜，第一功能膜用于反射波长为第一波长的第一光信号并可透过波长为第二波长的第二光信号，第二功能膜用于反射第二光信号。For the first implementation, referring to FIG. 2, an optical surface of the filter 2 near the first surface is plated with a first functional film, and the other optical surface is coated with a second functional film, and the first functional film is used for reflecting the wavelength. The first optical signal of the first wavelength and the second optical signal of the second wavelength are used to reflect the second optical signal.

在第一种实现方式中，接收透镜12位于发射透镜13和第一表面之间。由于发射透镜13与激光器4位置相对，接收透镜12与探测器3位置相对，所以探测器3位于激光器4和第一表面之间。对于该实现方式，由于滤波片2的第一功能膜会反射第一光信号；并且探测器3位于激光器4和第一表面之间，这样从结构设计上就能保证不会发生第一光信号被反射至接收透镜13并传输至激光器4中，避免了对激光器4的性能产生影响。In a first implementation, the receiving lens 12 is located between the emitting lens 13 and the first surface. Since the transmitting lens 13 is positioned opposite the laser 4, the receiving lens 12 is positioned opposite the detector 3, so that the detector 3 is located between the laser 4 and the first surface. For this implementation, since the first functional film of the filter 2 reflects the first optical signal; and the detector 3 is located between the laser 4 and the first surface, the structural design can ensure that the first optical signal does not occur. It is reflected to the receiving lens 13 and transmitted to the laser 4, which avoids an influence on the performance of the laser 4.

这样光纤射出的第一光信号经过光纤透镜11传输至滤波片2的第一功能膜，第一功能膜直接将第一光信号反射至接收透镜12，接收透镜12将第一光信号在探测器3上汇聚成光斑并射入探测器3中。The first optical signal emitted by the optical fiber is transmitted to the first functional film of the filter 2 through the optical fiber lens 11. The first functional film directly reflects the first optical signal to the receiving lens 12, and the receiving lens 12 transmits the first optical signal to the detector. 3 is concentrated into a spot and injected into the detector 3.

以及，激光器4向发射透镜13发射的第二光信号，第二光信号经过发射透镜13后传输至滤波片2的第一功能膜，并从第一功能膜透射至第二功能膜；第二功能膜将第二光信号反射至第一功能膜，并从第一功能膜透射至光纤透镜11，光纤透镜11将第二光信号在光纤上汇聚成光班并射入光纤中。And a second optical signal emitted by the laser 4 to the transmitting lens 13, the second optical signal is transmitted to the first functional film of the filter 2 through the transmitting lens 13, and transmitted from the first functional film to the second functional film; The functional film reflects the second optical signal to the first functional film and is transmitted from the first functional film to the fiber lens 11. The fiber lens 11 converges the second optical signal onto the optical fiber into the optical fiber and into the optical fiber.

其中，激光器4发射的第二光信号的光强度往往较大，为了对第二光信号的光强度进行调节，参见图4，第二功能膜可透射部分第二光信号。这样，第二光信号传输至第二功能膜时，第二光信号存在部分光信号从第二功能膜上透射出去，剩下的第二光信号被第二功能膜反射至光纤中，这样可以减小反射到光纤中的第二光信号的光强度。The light intensity of the second optical signal emitted by the laser 4 tends to be large. To adjust the light intensity of the second optical signal, referring to FIG. 4, the second functional film can transmit a portion of the second optical signal. In this way, when the second optical signal is transmitted to the second functional film, a part of the optical signal is transmitted from the second functional film, and the remaining second optical signal is reflected by the second functional film into the optical fiber, so that The light intensity of the second optical signal reflected into the fiber is reduced.

对于第二种实现方式，参见图3，滤波片2靠近第一表面的一光学面上均镀有第一功能膜，另一光学面上镀有第二功能膜，第一功能膜用于反射波长为第二波长的第二光信号并可透过波长为第一波长的第一光信号，第二功能膜用于反射第一光信号。For the second implementation, referring to FIG. 3, an optical surface of the filter 2 adjacent to the first surface is plated with a first functional film, and the other optical surface is plated with a second functional film, and the first functional film is used for reflection. The second optical signal having a wavelength of the second wavelength is permeable to the first optical signal having a wavelength of the first wavelength, and the second functional film is configured to reflect the first optical signal.

在第二种实现方式中，发射透镜13位于接收透镜12和第一表面之间。由于发射透镜13与激光器4位置相对，接收透镜12与探测器3位置相对，所以激光器4位于探测器3和第一表面之间。对于该实现方式，由于滤波片2与第一凹槽14靠近第一表面的一侧面之间存在的夹角空隙为空气，不存在其他填充物(如光学胶水等)，这样从***架构设计上就能保证就不会出现因为填充物内部的缺陷(如气泡等)，将第一光信号反射至接收透镜13并传输至激光器4中，避免了对激光器4的性能产生影响。In a second implementation, the emitting lens 13 is located between the receiving lens 12 and the first surface. Since the transmitting lens 13 is positioned opposite the laser 4, the receiving lens 12 is positioned opposite the detector 3, so that the laser 4 is located between the detector 3 and the first surface. For this implementation, since the gap between the filter 2 and the first groove 14 near a side of the first surface is air, there is no other filler (such as optical glue, etc.), so that the system architecture is designed. It can be ensured that the first light signal is reflected to the receiving lens 13 and transmitted to the laser 4 due to defects inside the filler (e.g., bubbles, etc.), thereby avoiding an influence on the performance of the laser 4.

这样光纤射出的第一光信号经过光纤透镜11传输至滤波片2的第一功能膜，并从第一功能膜透射至第二功能膜；第二功能膜将第一光信号反射至第一功能膜并从第一功能膜透射至接收透镜12，接收透镜12将第一光信号在探测器3上汇聚成光斑并射入探测器3中。The first optical signal emitted by the optical fiber is transmitted to the first functional film of the filter 2 through the fiber lens 11 and transmitted from the first functional film to the second functional film; the second functional film reflects the first optical signal to the first function. The film is transmitted from the first functional film to the receiving lens 12, and the receiving lens 12 converges the first light signal on the detector 3 into a spot and into the detector 3.

以及，激光器4向发射透镜13发射的第二光信号，第二光信号经过发射透镜13后传输至滤波片2的第一功能膜；第一功能膜直接将第二光信号反射至光纤透镜11，光纤透镜11将第二光信号在光纤上汇聚成光班并射入光纤中。And a second optical signal emitted by the laser 4 to the transmitting lens 13, the second optical signal is transmitted to the first functional film of the filter 2 after passing through the transmitting lens 13, and the first functional film directly reflects the second optical signal to the optical fiber lens 11. The fiber optic lens 11 converges the second optical signal onto the optical fiber into the optical fiber and into the optical fiber.

其中，上述光纤射出的第一光信号是发散光，并将第一光信号垂直射向光纤透镜11，光纤透镜11将第一光信号准直后射向滤波片2。上述激光器4发射的第二光信号是发散光，并将第二光信号垂直发射至发射透镜13，发射透镜13将第二光信号准直后射向滤波片2。The first optical signal emitted by the optical fiber is divergent light, and the first optical signal is directed perpendicularly to the optical fiber lens 11. The optical fiber lens 11 collimates the first optical signal and then directs the optical signal to the filter 2. The second optical signal emitted by the laser 4 is divergent light, and the second optical signal is vertically emitted to the emission lens 13. The emission lens 13 collimates the second optical signal and directs it toward the filter 2.

对于以上两种实现方式，由于通过滤波片2的前后两个光学面上的功能膜反射第一光信号和第二光信号，这样可以使接收透镜12和发射透镜13之间的间距小于现有光学耦合模块中的接收透镜和发射透镜之间的间距，这样可以使光学耦合模块制造的更紧凑，从而可以减小光学耦合模块的体积。For the above two implementations, since the first optical signal and the second optical signal are reflected by the functional films on the front and rear optical surfaces of the filter 2, the spacing between the receiving lens 12 and the transmitting lens 13 can be made smaller than the existing one. The spacing between the receiving lens and the emitting lens in the optical coupling module can make the optical coupling module more compact, thereby reducing the volume of the optical coupling module.

可选的，参见图5和图6，对于上述第一种实现方式的光学耦合模块或上述第二种实现方式的光学耦合模块，该光学耦合模块，还包括：Optionally, referring to FIG. 5 and FIG. 6 , for the optical coupling module of the first implementation manner or the optical coupling module of the second implementation manner, the optical coupling module further includes:

第一固定台6，第一固定台6位于第一凹槽14中且位于滤波片2和第一表面之间，第一固定台6设有第一倾斜面61；第一固定台6还位于第一光信号的传输路径和第二光信号的传输路径的一侧，滤波片2靠近第一表面的一光学面固定在第一固定台6的倾斜面61上。a first fixing table 6, the first fixing table 6 is located in the first groove 14 and located between the filter 2 and the first surface, the first fixing table 6 is provided with a first inclined surface 61; the first fixing table 6 is also located One side of the transmission path of the first optical signal and the transmission path of the second optical signal, an optical surface of the filter 2 adjacent to the first surface is fixed on the inclined surface 61 of the first fixed stage 6.

可选的，第一固定台6的第一倾斜面61与第二表面之间存在朝向光纤透镜11的预设第一夹角，第一固定台6的第一倾斜面61与第一表面之间也存在小于90度的夹角，且该夹角等于或约等于90度减去预设第一夹角。Optionally, a predetermined first angle toward the fiber lens 11 exists between the first inclined surface 61 of the first fixing table 6 and the second surface, and the first inclined surface 61 of the first fixing table 6 and the first surface There is also an angle of less than 90 degrees, and the angle is equal to or approximately equal to 90 degrees minus the preset first angle.

参见图7所示的第一固定台6的截面，第一固定台6的两个侧面和第一固定台6的第一倾斜面61围成三角形结构的截面。Referring to the cross section of the first fixing table 6 shown in Fig. 7, the two side faces of the first fixing table 6 and the first inclined surface 61 of the first fixing table 6 enclose a cross section of a triangular structure.

参见图5，第一固定台6的该两个侧面中的其中一个侧面可以固定在第一凹槽14的底面上，和/或，第一固定台6的该两个侧面中的另一个侧面可以固定在第一凹槽14靠近第一表面的一侧面上。Referring to FIG. 5, one of the two sides of the first fixing table 6 may be fixed to the bottom surface of the first recess 14, and/or the other of the two sides of the first fixing table 6. It may be fixed on a side of the first groove 14 close to the first surface.

可选的，第一固定台6的该两个侧面之间的夹角为直角或近似直角，例如可以为89.5度、90度或90.5度等值。或者第一固定台6的该两个侧面之间的夹角也可以为其他角度，例如可以为70度、75度或80度等。Optionally, the angle between the two sides of the first fixing table 6 is a right angle or a nearly right angle, and may be, for example, 89.5 degrees, 90 degrees, or 90.5 degrees. Alternatively, the angle between the two sides of the first fixing table 6 may be other angles, for example, 70 degrees, 75 degrees, or 80 degrees.

其中，第一固定台6的该两个侧面之间的夹角可以与第一凹槽14的底面和第一凹槽14 靠近第一表面的侧面之间的夹角相等。Wherein, the angle between the two sides of the first fixing table 6 may be equal to the angle between the bottom surface of the first groove 14 and the side of the first groove 14 close to the first surface.

可选的，第一固定台6的该截面可以是等腰直角三角形，这样滤波片2固定在第一固定台6的第一倾斜面61上，可以保证滤波片2与第一表面之间的夹角以及与第二表面之间夹角均为45度或近似45度，以及保证第一光信号在滤波片2上的入射角和第二光信号在滤波片2上的入射角均为45度或近似45度。Optionally, the cross section of the first fixing table 6 may be an isosceles right triangle, such that the filter 2 is fixed on the first inclined surface 61 of the first fixing table 6 to ensure the relationship between the filter 2 and the first surface. The angle between the angle and the second surface is 45 degrees or approximately 45 degrees, and the incident angle of the first optical signal on the filter 2 and the incident angle of the second optical signal on the filter 2 are both 45. Degree or approximate 45 degrees.

可选的，第一固定台6和光学组件1可以一起成型，或者，通过结构胶将第一固定台6的该两个侧面分别固定在第一凹槽14的底面上和和/或固定在第一凹槽14靠近第一表面的一侧面上。Optionally, the first fixing table 6 and the optical component 1 may be molded together, or the two sides of the first fixing table 6 are respectively fixed on the bottom surface of the first groove 14 and/or fixed by the structural adhesive. The first groove 14 is adjacent to one side of the first surface.

可选的，滤波片2可以通过结构胶固定在第一固定台6的倾斜面61上。Optionally, the filter 2 can be fixed on the inclined surface 61 of the first fixing table 6 by structural adhesive.

可选的，结构胶可以为紫外光(UltraVillet，UV)固化型的、热固化型的或者UV和热双因化型的环氧胶等。Optionally, the structural adhesive may be an ultraviolet (UltraVillet, UV) curing type, a heat curing type or a UV and heat double type epoxy glue.

可选的，参见图8，对于上述第一种实现方式的光学耦合模块或上述第二种实现方式的光学耦合模块，该光学耦合模块，还包括：Optionally, referring to FIG. 8, for the optical coupling module of the first implementation manner or the optical coupling module of the second implementation manner, the optical coupling module further includes:

第二固定台7，第二固定台7安装在第一凹槽14中且位于滤波片2和第一表面之间，第二固定台7设有第二倾斜面71；a second fixed stage 7, the second fixed stage 7 is installed in the first groove 14 and between the filter 2 and the first surface, the second fixed stage 7 is provided with a second inclined surface 71;

第一光信号的传输路径和第二光信号的传输路径位于第二固定台7和第一固定台6之间，滤波片2靠近第一表面的一光学面固定在第一固定台6的倾斜面61和第二固定台7的第二倾斜面71上。The transmission path of the first optical signal and the transmission path of the second optical signal are located between the second fixed stage 7 and the first fixed stage 6, and an optical surface of the filter 2 close to the first surface is fixed at the inclination of the first fixed stage 6. The face 61 and the second inclined surface 71 of the second fixing table 7 are on the second inclined surface 71.

可选的，第二固定台7的第二倾斜面71与第二表面之间存在朝向光纤透镜11的预设第一夹角，第二固定台7的第二倾斜面71与第一表面之间也存在小于90度的夹角，且该夹角等于或约等于90度减去预设第一夹角。Optionally, there is a preset first angle toward the fiber lens 11 between the second inclined surface 71 of the second fixing table 7 and the second surface, and the second inclined surface 71 of the second fixing table 7 and the first surface There is also an angle of less than 90 degrees, and the angle is equal to or approximately equal to 90 degrees minus the preset first angle.

第二固定台7的结构和第一固定台6的结构相同，即第二固定台7的截面和图7所示的截面相同，第二固定台7的两个侧面和第二固定台7的第二倾斜面71围成三角形结构的截面。The structure of the second fixing table 7 is the same as that of the first fixing table 6, that is, the cross section of the second fixing table 7 is the same as the cross section shown in FIG. 7, the two sides of the second fixing table 7 and the second fixing table 7 The second inclined surface 71 encloses a cross section of a triangular structure.

参见图8，第二固定台7的该两个侧面中的其中一个侧面可以固定在第一凹槽14的底面上，和/或，第二固定台7的该两个侧面中的另一个侧面可以固定在第一凹槽14靠近第一表面的一侧面上。Referring to FIG. 8, one of the two sides of the second fixing table 7 may be fixed to the bottom surface of the first recess 14, and/or the other of the two sides of the second fixing table 7. It may be fixed on a side of the first groove 14 close to the first surface.

第二固定台7的该两个侧面之间的夹角也可以为直角或近似直角，例如可以为89.5度、90度或90.5度等。或者第二固定台7的该两个侧面之间的夹角也可以为其他角度，例如可以为70度、80度或85度等。The angle between the two sides of the second fixing table 7 may also be a right angle or a nearly right angle, and may be, for example, 89.5 degrees, 90 degrees, or 90.5 degrees. Alternatively, the angle between the two sides of the second fixing table 7 may be other angles, for example, 70 degrees, 80 degrees, or 85 degrees.

其中，第二固定台7的该两个侧面之间的夹角也可以与第一凹槽14的底面和第一凹槽14靠近第一表面的侧面之间的夹角相等。The angle between the two sides of the second fixing table 7 may also be equal to the angle between the bottom surface of the first groove 14 and the side of the first groove 14 close to the first surface.

第二固定台7的该截面可以是等腰直角三角形，这样滤波片2固定在第一固定台6的倾斜面61和第二固定台7的倾斜面71上，可以保证滤波片2与第一表面之间的夹角以及与第二表面之间夹角均为45度或近似45度。The cross section of the second fixing table 7 may be an isosceles right triangle, such that the filter 2 is fixed on the inclined surface 61 of the first fixing table 6 and the inclined surface 71 of the second fixing table 7, so that the filter 2 and the first can be ensured. The angle between the surfaces and the angle between the surface and the second surface are both 45 degrees or approximately 45 degrees.

可选的，第二固定台7和光学组件1可以一起成型，或者，通过结构胶将第二固定台7的该两个侧面分别固定在第一凹槽14的底面上和靠近第一表面的一侧面上。Optionally, the second fixing table 7 and the optical component 1 may be formed together, or the two sides of the second fixing table 7 are respectively fixed on the bottom surface of the first groove 14 and close to the first surface by structural adhesive. On one side.

可选的，滤波片2可以通过结构胶固定在第一固定台6的第一倾斜面61上和第二固定台7的第二倾斜面71上。Optionally, the filter 2 can be fixed on the first inclined surface 61 of the first fixing table 6 and the second inclined surface 71 of the second fixing table 7 by structural adhesive.

其中，在本实施例中，滤波片2也可以不用第一固定台6和/或第二固定台7固定在第一凹槽中。参见图2和3，在实现时，滤波片2的顶部可以通过结构胶固定在第一凹槽14靠近第一表面的一侧面上，底部可以通过结构胶固定在第一凹槽14的底面上。In this embodiment, the filter 2 can also be fixed in the first recess without using the first fixing table 6 and/or the second fixing table 7. Referring to Figures 2 and 3, in implementation, the top of the filter 2 may be fixed to one side of the first recess 14 adjacent to the first surface by a structural adhesive, and the bottom portion may be fixed to the bottom surface of the first recess 14 by a structural adhesive. .

需要说明的是：在上述结构的光学耦合模块中，第一光信号和第二光信号传输至第一凹槽14靠近第一表面的一侧面时，第一光信号和第二光信号均与第一凹槽14靠近第一表面的一侧面垂直，这样导致当第一光信号传输至该侧面时会存在部分第一光信号被原路反射回光纤中，以及当第二光信号传输至该侧面时会存在部分第二光信号被原路反射回激光器4中。针对出现的问题，本申请实施例提供了如下两种解决方式：It should be noted that, in the optical coupling module of the above structure, when the first optical signal and the second optical signal are transmitted to a side of the first recess 14 near the first surface, the first optical signal and the second optical signal are both The first groove 14 is perpendicular to a side of the first surface, such that when the first optical signal is transmitted to the side, a portion of the first optical signal is reflected back into the optical fiber by the original path, and when the second optical signal is transmitted to the At the side, a portion of the second optical signal is reflected back into the laser 4 by the original path. For the problem that occurs, the embodiment of the present application provides the following two solutions:

第一种解决方式，在第一凹槽14靠近第一表面的一侧面上镀有增透膜。In the first solution, an anti-reflection film is plated on one side of the first groove 14 near the first surface.

其中，第一凹槽14靠近第一表面的一侧面镀上增透膜后，可以提高该侧面透过光信号的性能以及降低反射光信号的性能。这样当第一光信号传输至该侧面时，可以减少被该侧面原路反射回的部分第一光信号，并使更多的第一光信号从该侧面透射至滤波片2，以及当第二光信号传输至该侧面时，可以减少被该侧面原路反射回的部分第二光信号，并使更多的第二光信号从该侧面透射至光纤透镜11。Wherein, after the first groove 14 is coated with the anti-reflection film on one side of the first surface, the performance of the side surface to transmit the optical signal and the performance of the reflected light signal can be improved. Thus, when the first optical signal is transmitted to the side, a portion of the first optical signal reflected back by the side path can be reduced, and more first optical signals are transmitted from the side to the filter 2, and when the second When the optical signal is transmitted to the side, a portion of the second optical signal reflected back by the side path can be reduced, and more of the second optical signal can be transmitted from the side to the fiber lens 11.

第二种解决方式，参见图9和10，第一凹槽14靠近第一表面的一侧面上设有第二凹槽15，第一光信号在第二凹槽15的底面上的入射角和第二光信号在第二凹槽15的底面上的入射角均不等于90度，第一光信号的传输路径和第二光信号的传输路径经过第二凹槽15的底面。In a second solution, referring to FIGS. 9 and 10, a second groove 15 is disposed on a side of the first groove 14 adjacent to the first surface, and an incident angle of the first optical signal on the bottom surface of the second groove 15 is The incident angle of the second optical signal on the bottom surface of the second recess 15 is not equal to 90 degrees, and the transmission path of the first optical signal and the transmission path of the second optical signal pass through the bottom surface of the second recess 15.

可选的，第二凹槽15的底面与第二表面之间存在朝向光纤透镜11且小于90度的预设第二夹角。预设第二夹角可以为85度、80度、75度或70度等值的夹角。Optionally, there is a preset second angle between the bottom surface of the second groove 15 and the second surface facing the fiber lens 11 and less than 90 degrees. The preset second angle may be an angle of 85 degrees, 80 degrees, 75 degrees, or 70 degrees.

另外，第二凹槽15的底面与第一表面之间也存在小于90度的夹角，该夹角等于或约等于90度减去该第二夹角。In addition, there is also an angle of less than 90 degrees between the bottom surface of the second groove 15 and the first surface, the angle being equal to or approximately equal to 90 degrees minus the second angle.

参见图11，第一光信号传输至第二凹槽15的底面时，由于第二凹槽15的底面与第一表面之间的夹角小于90度，即第二凹槽15的底面是倾斜面，又由于第一光信号垂直或近似垂直于第一表面，使得第一光信号并不是垂直或近似垂直传输至第二凹槽15的底面，第一光信号与第二凹槽15的底面之间存在小于90度的夹角，这样第二凹槽15的底面反射的部分第一光信号不会沿着第一光信号的原传输路径传输，剩下的第一光信号会透过第二凹槽15的底面并传输至滤波片2，避免将该部分第一光信号原路反射回光纤中。Referring to FIG. 11, when the first optical signal is transmitted to the bottom surface of the second recess 15, the angle between the bottom surface of the second recess 15 and the first surface is less than 90 degrees, that is, the bottom surface of the second recess 15 is inclined. And, because the first optical signal is perpendicular or approximately perpendicular to the first surface, the first optical signal is not vertically or approximately vertically transmitted to the bottom surface of the second recess 15, the first optical signal and the bottom surface of the second recess 15 There is an angle between less than 90 degrees, so that part of the first optical signal reflected by the bottom surface of the second groove 15 is not transmitted along the original transmission path of the first optical signal, and the remaining first optical signal will pass through The bottom surface of the two recesses 15 is transmitted to the filter 2 to avoid reflecting the portion of the first optical signal back into the optical fiber.

同理，第二光信号传输至第二凹槽15的底面时，由于第二凹槽15的底面与第二表面之间的夹角小于90度，使得第二光信号并不是垂直或近似垂传输至第二凹槽15的底面，第二光信号与第二凹槽15的底面之间存在小于90度的夹角，这样第二凹槽15的底面反射的部分第二光信号不会沿着第二光信号的原传输路径传输，剩下的第二光信号会透过该底面并传输至光纤透镜11，避免将该部分第二光信号原路反射回激活器4中。Similarly, when the second optical signal is transmitted to the bottom surface of the second recess 15, since the angle between the bottom surface of the second recess 15 and the second surface is less than 90 degrees, the second optical signal is not vertical or approximately vertical. The second optical signal and the bottom surface of the second recess 15 have an angle of less than 90 degrees, so that a portion of the second optical signal reflected by the bottom surface of the second recess 15 does not follow. The original optical path of the second optical signal is transmitted, and the remaining second optical signal is transmitted through the bottom surface and transmitted to the fiber lens 11 to avoid reflecting the portion of the second optical signal back into the activator 4.

可选的，在第二凹槽15的底面上也可以镀有增透膜。Optionally, an anti-reflection film may also be plated on the bottom surface of the second recess 15 .

其中，第二凹槽15的底面镀上增透膜后，可以提高该底面透过光信号的性能以及降低反射光信号的性能。这样当第一光信号传输至该底面时，可以减少被该底面反射的部分第一光信号，并使更多的第一光信号从该底面透射至滤波片2，这样可以降低光信号的损耗，以及当第二光信号传输至该底面时，可以减少被该底面反射的部分第二光信号，并使更多的第二光信号从该底面透射至光纤透镜11。Wherein, after the bottom surface of the second recess 15 is coated with the anti-reflection film, the performance of the bottom surface to transmit the optical signal and the performance of the reflected optical signal can be improved. Thus, when the first optical signal is transmitted to the bottom surface, part of the first optical signal reflected by the bottom surface can be reduced, and more first optical signals are transmitted from the bottom surface to the filter 2, thereby reducing the loss of the optical signal. And when the second optical signal is transmitted to the bottom surface, a portion of the second optical signal reflected by the bottom surface can be reduced, and more second optical signals are transmitted from the bottom surface to the fiber lens 11.

需要说明的是：第一光信号和第二光信号传输至第一凹槽14的底面时，第一光信号和第二光信号均与第一凹槽14的底面垂直，这样导致当第一光信号传输至该底面时会存在部分第一光信号可能被原路反射回光纤中，以及当第二光信号传输至该底面时会存在部分第二光信号可能被原路反射回激光器4中。针对出现的问题，本申请实施例提供了如下两种解决方式：It should be noted that when the first optical signal and the second optical signal are transmitted to the bottom surface of the first recess 14, the first optical signal and the second optical signal are both perpendicular to the bottom surface of the first recess 14, thus causing the first When the optical signal is transmitted to the bottom surface, a part of the first optical signal may be reflected back into the optical fiber by the original path, and when the second optical signal is transmitted to the bottom surface, a part of the second optical signal may be reflected back to the laser 4 by the original path. . For the problem that occurs, the embodiment of the present application provides the following two solutions:

第一种解决方式，在第一凹槽14的底面上可以镀有增透膜。In the first solution, an antireflection film may be plated on the bottom surface of the first recess 14.

其中，第一凹槽14的底面镀上增透膜后，可以提高该底面透过光信号的性能以及降低反射光信号的性能。这样当第一光信号传输至该底面时，可以减少被该底面原路反射回的部分第一光信号，并使更多的第一光信号从该底面透射至接收透镜12，这样可以降低光信号的损耗，以及当第二光信号传输至该底面时，可以减少被该底面原路反射回的部分第二光信号，并使更多的第二光信号从该底面透射至滤波片2。Wherein, after the bottom surface of the first recess 14 is coated with the anti-reflection film, the performance of the bottom surface to transmit the optical signal and the performance of the reflected optical signal can be improved. Thus, when the first optical signal is transmitted to the bottom surface, a portion of the first optical signal reflected back by the bottom surface can be reduced, and more first optical signals are transmitted from the bottom surface to the receiving lens 12, thereby reducing light. The loss of the signal, and when the second optical signal is transmitted to the bottom surface, can reduce a portion of the second optical signal reflected back by the bottom surface, and transmit more second optical signals from the bottom surface to the filter 2.

第二种解决方式，参见图11，第一光信号在第一凹槽14的底面上的入射角和第二光信号在第一凹槽14的底面上的入射角均不等于90度。In a second solution, referring to FIG. 11, the incident angle of the first optical signal on the bottom surface of the first recess 14 and the incident angle of the second optical signal on the bottom surface of the first recess 14 are not equal to 90 degrees.

其中，第一凹槽14的底面与第二表面之间可以存在小于90度的预设第三夹角，即第一凹槽14的底面也可以为倾斜面。There may be a preset third angle between the bottom surface of the first groove 14 and the second surface that is less than 90 degrees, that is, the bottom surface of the first groove 14 may also be an inclined surface.

预设第三夹角可以朝向光纤透镜11，也可以朝向与光学组件1的第一表面相对应的另一表面，预设第三夹角可以为10度、15度、20度或25度等值的夹角。The preset third angle may be toward the fiber lens 11 or may be toward the other surface corresponding to the first surface of the optical component 1. The preset third angle may be 10 degrees, 15 degrees, 20 degrees, or 25 degrees. The angle between the values.

第一凹槽14的底面与第一表面之间存在小于90度的夹角，且该夹角等于或约等于90度减去第三夹角。There is an angle of less than 90 degrees between the bottom surface of the first groove 14 and the first surface, and the angle is equal to or approximately equal to 90 degrees minus the third angle.

参见图11，第一光信号传输至第一凹槽14的底面时，由于该底面与第一表面之间存在小于90度的夹角，即该底面是倾斜面，使得该底面并不与第一光信号垂直，这样该底面反射的部分第一光信号不会沿着第一光信号的原传输路径传输，剩下的第一光信号会透过该底面并传输至接收透镜12，避免将该部分第一光信号反射回光纤中。Referring to FIG. 11 , when the first optical signal is transmitted to the bottom surface of the first recess 14 , since the bottom surface and the first surface have an angle of less than 90 degrees, that is, the bottom surface is an inclined surface, so that the bottom surface is not the same as the first surface. An optical signal is vertical such that a portion of the first optical signal reflected by the bottom surface is not transmitted along the original transmission path of the first optical signal, and the remaining first optical signal is transmitted through the bottom surface and transmitted to the receiving lens 12 to avoid The portion of the first optical signal is reflected back into the fiber.

同理，第二光信号传输至该底面时，由于该底面与第二表面之间存在小于90度的夹角，使得该底面并不与第二光信号垂直，这样该底面反射的部分第二光信号不会沿着第二光信号的原传输路径传输，剩下的第二光信号会透过该底面并传输至滤波片2，避免将该部分第二光信号原路反射回激活器4中。Similarly, when the second optical signal is transmitted to the bottom surface, since the bottom surface and the second surface have an angle of less than 90 degrees, the bottom surface is not perpendicular to the second optical signal, so that the bottom surface reflects the second portion. The optical signal is not transmitted along the original transmission path of the second optical signal, and the remaining second optical signal is transmitted through the bottom surface and transmitted to the filter 2 to prevent the second optical signal from being reflected back to the activator 4 in.

可选的，在第一凹槽14的底面上也可以镀有增透膜。Optionally, an anti-reflection film may also be plated on the bottom surface of the first recess 14 .

其中，第一凹槽14的底面镀上增透膜后，可以提高该底面透过光信号的性能以及降低反射光信号的性能。这样当第一光信号传输至该底面时，可以减少被该底面反射的部分第一光信号，并使更多的第一光信号从该底面透射至滤波片2，这样可以降低光信号的损耗，以及当第二光信号传输至该底面时，可以减少被该底面反射的部分第二光信号，并使更多的第二光信号从该底面透射至滤波片2。Wherein, after the bottom surface of the first recess 14 is coated with the anti-reflection film, the performance of the bottom surface to transmit the optical signal and the performance of the reflected optical signal can be improved. Thus, when the first optical signal is transmitted to the bottom surface, part of the first optical signal reflected by the bottom surface can be reduced, and more first optical signals are transmitted from the bottom surface to the filter 2, thereby reducing the loss of the optical signal. And when the second optical signal is transmitted to the bottom surface, a portion of the second optical signal reflected by the bottom surface may be reduced, and more second optical signals may be transmitted from the bottom surface to the filter 2.

可选的，参见图11，在第二种解决方式中，还可以在基板5上设置功率监控器9，该功率监控器9可以与激光器4相连，且该功率监控器9可以接收被第一凹槽14的底面反射的部分第二光信号，根据该部分第二光信号的信号强度调整激光器4的发射功率。例如，在该部分第二光信号的信号强度低于预设阈值时，可以增加激光器4的发射功率。Optionally, referring to FIG. 11, in the second solution, a power monitor 9 may be disposed on the substrate 5, the power monitor 9 may be connected to the laser 4, and the power monitor 9 may receive the first A portion of the second optical signal reflected by the bottom surface of the recess 14 adjusts the transmit power of the laser 4 according to the signal strength of the portion of the second optical signal. For example, the transmit power of the laser 4 can be increased when the signal strength of the portion of the second optical signal is below a predetermined threshold.

可选的，该功率监控器9可以为PIN光电二极管(positive-intrinsic-negative photo detector,PIN PD)或监控光电二极管(Monitor photo detector,MPD)等。Optionally, the power monitor 9 can be a positive-intrinsic-negative photo detector (PIN PD) or a monitor photo detector (MPD).

可选的，该功率监控器9也可以集成在基板5上。Alternatively, the power monitor 9 can also be integrated on the substrate 5.

可选的，接收透镜12的中心和发射透镜13的中心之间的距离a可以随着滤波片2的厚度和/或滤波片2与第二表面之间的第一夹角变化而变化。Alternatively, the distance a between the center of the receiving lens 12 and the center of the emitting lens 13 may vary with the thickness of the filter 2 and/or the first angle between the filter 2 and the second surface.

其中，滤波片2越厚或预设的第一夹角越小，接收透镜12的中心和发射透镜13的中心之间的距离a可以越大，反之，滤波片2越薄或预设的第一夹角越大，接收透镜12的中心和发射透镜13的中心之间的距离a可以越小。Wherein, the thicker the filter 2 or the smaller the preset first angle, the larger the distance a between the center of the receiving lens 12 and the center of the transmitting lens 13 , and vice versa, the thinner the filter 2 or the preset The larger the angle, the smaller the distance a between the center of the receiving lens 12 and the center of the emitting lens 13 can be.

可以将第一光信号在滤波片2上的入射角和第二光信号在滤波片2上的入射角均设置大于44度且小于46度，即滤波片2与第二表面之间的第一夹角可以大于44度且小于46度。例如，可以为44.5度、45度或45.5度等。或者，The incident angle of the first optical signal on the filter 2 and the incident angle of the second optical signal on the filter 2 may be set to be greater than 44 degrees and less than 46 degrees, that is, the first between the filter 2 and the second surface The included angle can be greater than 44 degrees and less than 46 degrees. For example, it may be 44.5 degrees, 45 degrees, or 45.5 degrees. or,

也可以将可以将第一光信号在滤波片2上的入射角和第二光信号在滤波片2上的入射角均设置成其他角度，即滤波片2与第二表面之间的第一夹角可以是其他角度，例如，可以是30度、40度、50度或60度等。It is also possible to set the incident angle of the first optical signal on the filter 2 and the incident angle of the second optical signal on the filter 2 to other angles, that is, the first clip between the filter 2 and the second surface. The angle may be other angles, for example, may be 30 degrees, 40 degrees, 50 degrees, or 60 degrees.

可选的，通常第一光信号在滤波片2上的入射角和第二光信号在滤波片2上的入射角均大于44度且小于46度，即滤波片2与第二表面之间的第一夹角可以大于44度且小于46度时，例如在为44.5度、45度或45.5度等夹角时，这时接收透镜12的中心和发射透镜13的中心之间的距离a和滤波片2的厚度b之间满足的关系为：

这样可以使接收透镜12和发射透镜13之间的间距较小且也可以较好控制生产成本，进而可以减小该光学耦合模块的体积。 Optionally, generally, the incident angle of the first optical signal on the filter 2 and the incident angle of the second optical signal on the filter 2 are both greater than 44 degrees and less than 46 degrees, that is, between the filter 2 and the second surface. When the first angle can be greater than 44 degrees and less than 46 degrees, for example, at an angle of 44.5 degrees, 45 degrees, or 45.5 degrees, the distance a between the center of the receiving lens 12 and the center of the emitting lens 13 and filtering The relationship between the thickness b of the sheet 2 is:

This makes it possible to make the spacing between the receiving lens 12 and the transmitting lens 13 small and also to better control the production cost, thereby reducing the volume of the optical coupling module.

可选的，参见图5、6、8、9、10、12，该光学耦合模块还可以包括法兰盘8，法兰盘8包括第一部分81和第二部分82；Optionally, referring to Figures 5, 6, 8, 9, 10, 12, the optical coupling module may further comprise a flange 8, the flange 8 comprising a first portion 81 and a second portion 82;

第一部分81内设有中空的空腔，第二部分82的一端固定在第一部分81的端面上，第二部分82的另一端固定在光纤透镜11上。The first portion 81 is provided with a hollow cavity, one end of the second portion 82 is fixed to the end surface of the first portion 81, and the other end of the second portion 82 is fixed to the fiber lens 11.

其中，第一部分81内的空腔可以容纳并固定光纤。且第二部分82的长度L可以等于光纤透镜11的焦距。Wherein the cavity in the first portion 81 can accommodate and secure the optical fiber. And the length L of the second portion 82 may be equal to the focal length of the fiber lens 11.

可选的，第一部分81和第二部分82可以均为圆柱形结构等。Alternatively, the first portion 81 and the second portion 82 may both be cylindrical structures or the like.

可选的，该光纤可以为多模多纤或单模光纤等，第一部分81内的容腔为光纤接口，可以为LC/SC型跳线(Lucent Connector/Super Contact，LC/SC)接口，如果该光纤接口固定，也可以为有源光缆(Active Optical Cable，AOC)接口。Optionally, the optical fiber may be a multi-mode multi-fiber or a single-mode optical fiber. The cavity in the first part 81 is a fiber interface, and may be an LC/SC type jumper (Lucent Connector/Super Contact, LC/SC) interface. If the fiber interface is fixed, it can also be an Active Optical Cable (AOC) interface.

可选的，参见图13和图14，光学耦合模块可以包括一排光纤透镜11、一排接收透镜12和一排发射透镜13；该一排光纤透镜11包括至少一个光纤透镜11，该一排接收透镜12包括至少一个接收透镜12，该一排发射透镜13包括至少一个发射透镜13。Optionally, referring to FIG. 13 and FIG. 14, the optical coupling module may include a row of fiber lenses 11, a row of receiving lenses 12, and a row of emitting lenses 13; the row of fiber lenses 11 includes at least one fiber lens 11, the row The receiving lens 12 includes at least one receiving lens 12 that includes at least one emitting lens 13.

该至少一个光纤透镜11中的每个光纤透镜11对应一个接收透镜12和一个发射透镜13，该光纤透镜11和该一个接收透镜12位于第一光信号的传输路径上，该光纤透镜11和该一个发射透镜13位于第二光信号的传输路径上。Each of the at least one fiber lens 11 corresponds to a receiving lens 12 and an emitting lens 13, and the fiber lens 11 and the one receiving lens 12 are located on a transmission path of the first optical signal, the fiber lens 11 and the fiber lens 11 An emission lens 13 is located on the transmission path of the second optical signal.

参见图15和图16，此时滤波片2的长度较长，第一固定台6和第二固定台7之间间隔的距离也较长，从而通过滤波片2可以反射来自每个光纤透镜11的第一光信号，以及反射来自每个发射透镜13的第二光信号。Referring to Figures 15 and 16, at this time, the length of the filter 2 is long, and the distance between the first fixed stage 6 and the second fixed stage 7 is also long, so that the filter 2 can be reflected from each of the fiber lenses 11 The first optical signal, and the second optical signal from each of the emitting lenses 13.

在本申请实施例中，由于滤波片的两个光学面镀有功能膜，又由于滤波片与第一凹槽靠近第一表面的一侧面之间存在夹角，这样不会将第一光信号反射至接收透镜并传输至激光器中，避免对激光器的性能产生影响；由于通过滤波片的两个光学面上的功能膜反射第一光信号和第二光信号，这样可以使接收透镜和发射透镜之间的间距小于现有光学耦合模块中的两者之间的间距，从而可以减小光学耦合模块的体积。In the embodiment of the present application, since the two optical surfaces of the filter are plated with the functional film, and the angle between the filter and the first groove is close to the first surface, the first optical signal is not Reflecting to the receiving lens and transmitting it to the laser to avoid affecting the performance of the laser; since the functional film on the two optical faces of the filter reflects the first light signal and the second light signal, the receiving lens and the emitting lens can be made The spacing between them is smaller than the spacing between the two in the existing optical coupling module, so that the volume of the optical coupling module can be reduced.

参见图2和3，本申请实施例提供了一种电子设备，包括：Referring to FIG. 2 and FIG. 3, an embodiment of the present application provides an electronic device, including:

探测器3、激光器4和上述任一种光学耦合模块； Detector 3, laser 4 and any of the above optical coupling modules;

激光器4与光学耦合模块的发射透镜13相对设置，探测器3与光学耦合模块的接收透镜12相对设置；The laser 4 is disposed opposite to the transmitting lens 13 of the optical coupling module, and the detector 3 is disposed opposite to the receiving lens 12 of the optical coupling module;

光学耦合模块，用于将来自光纤的第一光信号反射至探测器3，将激光器4发射的第二光信号反射至光纤，第一光信号的第一波长和第二光信号的第二波长不同。An optical coupling module for reflecting a first optical signal from the optical fiber to the detector 3, and reflecting a second optical signal emitted by the laser 4 to the optical fiber, the first wavelength of the first optical signal and the second wavelength of the second optical signal different.

可选的，还包括：Optionally, it also includes:

功率检测器9，功率检测器9与激光器4连接；a power detector 9, a power detector 9 connected to the laser 4;

功率检测器9，用于接收光学耦合模块反射的部分第二光信号，根据该部分第二光信号调整激活器4的发射功率。The power detector 9 is configured to receive a portion of the second optical signal reflected by the optical coupling module, and adjust the transmit power of the activator 4 according to the portion of the second optical signal.

以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。The above description is only an optional embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application are included in the protection of the present application. Within the scope.

Claims

一种光学耦合模块，其特征在于，包括：An optical coupling module, comprising:

光学组件和滤波片，所述光学组件靠近光纤的第一表面上设有光纤透镜，所述光学组件靠近激光器和探测器的第二表面上设有接收透镜和发射透镜；An optical component and a filter, the optical component is provided with a fiber lens on a first surface of the optical fiber, and the optical component is provided with a receiving lens and an emitting lens on a second surface of the laser and the detector;

所述光学组件还设有第一凹槽，所述滤波片倾斜放置在所述第一凹槽中，所述滤波片与所述第一凹槽靠近所述第一表面的一侧面之间存在夹角，所述滤波片的两个光学面上均镀有功能膜；The optical component is further provided with a first groove, the filter is obliquely placed in the first groove, and the filter is present between the filter and a side of the first groove adjacent to the first surface An angle between the two optical surfaces of the filter plate is coated with a functional film;

来自所述光纤透镜的第一光信号被所述滤波片的一光学面上镀有的功能膜反射至所述接收透镜，以及来自所述发射透镜的第二光信号被所述滤波片的另一光学面上镀有的功能膜反射至所述光纤透镜，所述第一光信号的第一波长和所述第二光信号的第二波长不同。a first optical signal from the fiber optic lens is reflected by a functional film plated on an optical surface of the filter to the receiving lens, and a second optical signal from the transmitting lens is used by the filter A functional film plated on an optical surface is reflected to the fiber lens, and a first wavelength of the first optical signal and a second wavelength of the second optical signal are different.
如权利要求1所述的光学耦合模块，其特征在于，The optical coupling module of claim 1 wherein:

所述滤波片靠近所述第一表面的一光学面上镀有第一功能膜，另一光学面上镀有第二功能膜；The optical film on the optical surface of the first surface is plated with a first functional film, and the other optical surface is plated with a second functional film;

所述第一功能膜用于反射所述第一光信号并透过所述第二光信号，所述第二功能膜用于反射所述第二光信号；或者，所述第一功能膜用于反射所述第二光信号并透过所述第一光信号，所述第二功能膜用于反射所述第一光信号。The first functional film is configured to reflect the first optical signal and transmit the second optical signal, and the second functional film is configured to reflect the second optical signal; or, the first functional film is used The second functional film is configured to reflect the first optical signal by reflecting the second optical signal and transmitting the first optical signal.
如权利要求2所述的光学耦合模块，其特征在于，在所述第二功能膜用于反射所述第二光信号时，所述第二功能膜还用于透射部分所述第二光信号。The optical coupling module according to claim 2, wherein said second functional film is further for transmitting a portion of said second optical signal when said second functional film is for reflecting said second optical signal .
如权利要求1至3任一项权利要求所述的光学耦合模块，其特征在于，还包括：The optical coupling module according to any one of claims 1 to 3, further comprising:

第一固定台，所述第一固定台安装在所述第一凹槽中且位于所述滤波片和所述第一表面之间，所述第一固定台设有第一倾斜面；a first fixed stage, the first fixed stage is installed in the first groove and located between the filter and the first surface, and the first fixed stage is provided with a first inclined surface;

所述第一固定台还位于所述第一光信号的传输路径和所述第二光信号的传输路径的一侧，所述滤波片靠近所述第一表面的光学面固定在所述第一倾斜面上。The first fixed station is further located at one side of a transmission path of the first optical signal and a transmission path of the second optical signal, and an optical surface of the filter near the first surface is fixed at the first Inclined surface.
如权利要求4所述的光学耦合模块，其特征在于，还包括：The optical coupling module of claim 4, further comprising:

第二固定台，所述第二固定台安装在所述第一凹槽中且位于所述滤波片和所述第一表面之间，所述第二固定台设有第二倾斜面；a second fixing table, the second fixing table is installed in the first groove and located between the filter and the first surface, and the second fixing table is provided with a second inclined surface;

所述第一光信号的传输路径和所述第二光信号的传输路径均位于所述第二固定台和所述第一固定台之间，所述滤波片靠近所述第一表面的光学面固定在所述第二倾斜面上。The transmission path of the first optical signal and the transmission path of the second optical signal are both located between the second fixed stage and the first fixed stage, and the filter is close to the optical surface of the first surface Fixed on the second inclined surface.
如权利要求1至5任一项权利要求所述的光学耦合模块，其特征在于，The optical coupling module according to any one of claims 1 to 5, wherein

所述第一凹槽靠近所述第一表面的一侧面上设有第二凹槽，所述第一光信号的传输路径和所述第二光信号的传输路径经过所述第二凹槽的底面，所述第一光信号在所述第二凹槽的底面上的入射角和所述第二光信号在所述第二凹槽的底面上的入射角均不等于90度。a second groove is disposed on a side of the first groove adjacent to the first surface, and a transmission path of the first optical signal and a transmission path of the second optical signal pass through the second groove The bottom surface, the incident angle of the first optical signal on the bottom surface of the second groove and the incident angle of the second optical signal on the bottom surface of the second groove are not equal to 90 degrees.
如权利要求6所述的光学耦合模块，其特征在于，所述第二凹槽的底面镀有增透膜。The optical coupling module according to claim 6, wherein the bottom surface of the second recess is plated with an anti-reflection film.
如权利要求1-7任一项权利要求所述的光学耦合模块，其特征在于，所述第一光信号在所述第一凹槽的底面上的入射角和所述第二光信号在所述第一凹槽的底面上的入射角均不等于90度。The optical coupling module according to any one of claims 1 to 7, wherein an incident angle of the first optical signal on a bottom surface of the first groove and the second optical signal are The incident angle on the bottom surface of the first groove is not equal to 90 degrees.
如权利要求1至8任一项权利要求所述的光学耦合模块，其特征在于，所述第一光信号在所述滤波片上的入射角和所述第二光信号在所述滤波片上的入射角均大于44度且小于46度。The optical coupling module according to any one of claims 1 to 8, wherein an incident angle of the first optical signal on the filter and an incident of the second optical signal on the filter The angles are all greater than 44 degrees and less than 46 degrees.
如权利要求9所述的光学耦合模块，其特征在于，所述接收透镜的中心和所述发射透镜的中心之间的距离a和所述滤波片的厚度b之间满足的关系为：
The optical coupling module according to claim 9, wherein a relationship between a distance a between a center of the receiving lens and a center of the transmitting lens and a thickness b of the filter is:
如权利要求1至10任一项权利要求所述的光学耦合模块，其特征在于，所述第一凹槽靠近所述第一表面的侧面上镀有增透膜。The optical coupling module according to any one of claims 1 to 10, wherein the first groove is coated with an anti-reflection film on a side surface adjacent to the first surface.
如权利要求1至11任一项权利要求所述的光学耦合模块，其特征在于，所述第一凹槽的底面镀有增透膜。The optical coupling module according to any one of claims 1 to 11, wherein the bottom surface of the first groove is plated with an anti-reflection film.
一种电子设备，其特征在于，所述电子设备包括：An electronic device, comprising:

激光器、探测器和如权利要求1至12任一项权利要求所述的光学耦合模块；a laser, a detector and an optical coupling module according to any of claims 1 to 12;

所述激光器与所述光学耦合模块的发射透镜相对设置，所述探测器与所述光学耦合模块的接收透镜相对设置；The laser is disposed opposite to an emitting lens of the optical coupling module, and the detector is disposed opposite to a receiving lens of the optical coupling module;

所述光学耦合模块，用于将来自光纤的第一光信号传输至所述探测器，将所述激光器发射的第二光信号传输至所述光纤，所述第一光信号的第一波长和所述第二光信号的第二波长不同。The optical coupling module is configured to transmit a first optical signal from an optical fiber to the detector, and transmit a second optical signal emitted by the laser to the optical fiber, a first wavelength of the first optical signal The second wavelength of the second optical signal is different.
如权利要求13所述的电子设备，其特征在于，还包括：The electronic device of claim 13, further comprising:

功率监控器，所述功率监控器与所述激光器连接；a power monitor, the power monitor being connected to the laser;

所述功率监控器，用于接收所述光学耦合模块反射的部分所述第二光信号，根据部分所述第二光信号调整所述激光器的发射功率。The power monitor is configured to receive a portion of the second optical signal reflected by the optical coupling module, and adjust a transmit power of the laser according to a portion of the second optical signal.