Optical module

Abstract

The utility model discloses an optical module which comprises a tube body, a light emitting component, a light receiving component and an optical assembly, the optical assembly is located in the tube body, the light emitting component and the light receiving component are both connected with the tube body, the light emitting component is used for emitting emitted light, and the light receiving component is used for receiving first reflected light. The optical assembly comprises optical filters, and the optical filters are located between the light emitting component and the optical fiber adapter and between the light receiving component and the optical fiber adapter and used for reflection and transmission of optical signals. The tube body is provided with an inner cavity and a light extinction cavity, and the light extinction cavity is communicated with the inner cavity of the tube body through a light through hole. The extinction cavity and the light receiving component are oppositely arranged, an extinction piece is attached to the inner wall of the extinction cavity, and an isolation piece is arranged at the light through hole. According to the optical module, the isolation piece and the extinction piece are matched with each other, crosstalk light returning to the inner cavity of the pipe body from the extinction cavity is reduced, the accuracy of a detection result is improved, and therefore the OTDR function of the optical module is improved.

Description

Technical Field

[0001] This application relates to the field of optical fiber communication technologies, and particularly to an optical module. Background Art

[0002] With the wide popularization of fiber optic broadband networks, operators have an increasingly high demand for network intelligent monitoring functions. Therefore, most optical modules have started to incorporate the OTDR (Optical Time Domain Reflectometer) function, that is, the performance of the fiber under test is monitored through OTDR technology to determine events such as fusion splices, connectors, or breaks in the fiber under test. For an optical module with an OTDR function, an optical transmitting component is used to send transmitted light to the fiber under test. The transmitted light is reflected at the fiber under test itself and each characteristic point to form a first reflected light. The first reflected light is coupled into the optical receiving component, and the optical receiving component converts the first reflected light into an electrical signal to monitor the performance of the fiber under test through the electrical signal, thereby determining events such as fusion splices, connectors, or breaks in the fiber under test.

[0003] Since the wavelength of the transmitted light emitted by the optical transmitting component is the same as the wavelength of the first reflected light received by the optical receiving component, the transmitted light emitted by the optical transmitting component is likely to cause crosstalk to the first reflected light received by the optical receiving component, making it easy for technicians to misjudge that the fiber under test is abnormal, affecting the OTDR function of the optical module. Utility Model Content

[0004] This application provides an optical module to improve the OTDR function of the optical module.

[0005] An optical module includes:

[0006] An optical fiber adapter,

[0007] An optical transceiver component connected to the optical fiber adapter; wherein, the optical transceiver component includes:

[0008] A tube body having an extinction cavity; the extinction cavity is communicated with the inner cavity of the tube body through a light passing hole;

[0009] An optical transmitting component disposed opposite to the optical fiber adapter and connected to the tube body for emitting transmitted light;

[0010] An optical receiving component disposed opposite to the extinction cavity and connected to the tube body for receiving the first reflected light; the transmitted light is incident on the optical fiber through the optical fiber adapter and is reflected in the optical fiber to form the first reflected light;

[0011] An optical component disposed in the tube body; the optical component includes:

[0012] A filter, located inside the lumen of the tube body, between the light emitting component and the fiber optic adapter, for reflecting and transmitting the emitted light, and between the light receiving component and the fiber optic adapter, for reflecting and transmitting the first reflected light;

[0013] An isolator, located at the light passing hole, on the reflection optical path of the reflected light of the emitted light after being reflected by the filter, for reducing the crosstalk light returning from the extinction cavity to the lumen of the tube body;

[0014] An extinction member, mounted on the inner wall of the extinction cavity, for reducing the crosstalk light incident on the extinction member, and the crosstalk light includes the reflected light formed after the emitted light is reflected by the filter.

[0015] An optical module, comprising:

[0016] A fiber optic adapter,

[0017] An optical transceiver component, connected to the fiber optic adapter; wherein, the optical transceiver component includes:

[0018] A tube body, having an extinction cavity; the extinction cavity is communicated with the lumen of the tube body through a light passing hole; an absorption layer is provided on the inner wall of the extinction cavity, and the absorption layer is used for absorbing the crosstalk light incident on the inner wall of the extinction cavity;

[0019] A light emitting component, disposed opposite to the fiber optic adapter and connected to the tube body, for emitting emitted light;

[0020] A light receiving component, disposed opposite to the extinction cavity and connected to the tube body, for receiving the first reflected light; the emitted light is incident on the optical fiber through the fiber optic adapter and is reflected in the optical fiber to form the first reflected light;

[0021] An optical component, disposed inside the tube body; the optical component includes:

[0022] A filter, located inside the lumen of the tube body, between the light emitting component and the fiber optic adapter, for reflecting and transmitting the emitted light, and between the light receiving component and the fiber optic adapter, for reflecting and transmitting the first reflected light;

[0023] An isolator, located at the light passing hole, on the reflection optical path of the reflected light of the emitted light after being reflected by the filter, for reducing the crosstalk light returning from the extinction cavity to the lumen of the tube body;

[0024] An extinction member, mounted on the inner wall of the extinction cavity, for reducing the crosstalk light incident on the extinction member, and the crosstalk light includes the reflected light formed after the reflected light is reflected by the filter.

[0025] Beneficial effects: The present application provides an optical module, which includes an optical fiber adapter and an optical transceiver component. The optical fiber adapter is connected to the optical transceiver component. The optical transceiver component includes a tube body, an optical transmitting component, an optical receiving component, and an optical component. The optical component is located inside the tube body. The optical transmitting component and the optical receiving component are both connected to the tube body. The optical transmitting component is used to emit transmitted light, and the optical receiving component is used to receive the first reflected light. The tube body has an inner cavity, and the transmitted light emitted by the optical transmitting component enters the optical fiber adapter through the inner cavity. When an abnormality occurs in the optical fiber, the transmitted light is reflected inside the optical fiber to form the first reflected light. The first reflected light enters the tube body through the optical fiber adapter and enters the optical receiving component along the inner cavity of the tube body. The optical receiving component converts the first reflected light into an electrical signal, and determines the abnormality of the optical fiber according to this electrical signal. The optical component includes a filter. The filter is located inside the inner cavity of the tube body. The filter is a semi-transmissive and semi-reflective film, and the optical signal is reflected and transmitted through the filter. The filter is located between the optical transmitting component and the optical fiber adapter, and is used for the reflection and transmission of the transmitted light. The filter is located between the optical receiving component and the optical fiber adapter, and is used for the reflection and transmission of the first reflected light. The transmitted light is transmitted through the filter and then enters the optical fiber adapter. The transmitted light is reflected inside the optical fiber to form the first reflected light. The first reflected light enters the tube body through the optical fiber adapter and is reflected by the filter to the optical receiving component. The transmitted light is reflected by the filter to form crosstalk light. Since the wavelengths of the transmitted light and the first reflected light are the same, when the crosstalk light enters the optical receiving component, it will cause signal crosstalk, making it easy for technicians to misjudge that an abnormality has occurred in the optical fiber, resulting in inaccurate detection results of the optical module for the measured optical fiber and affecting the OTDR function of the optical module. To solve this problem, the tube body has an extinction cavity. A light passing hole is provided at the connection between the extinction cavity and the inner cavity of the tube body, so that the extinction cavity is connected to the inner cavity of the tube body, and further transmits the crosstalk light in the inner cavity of the tube body to the extinction cavity. The extinction cavity is disposed opposite to the optical receiving component, so that the crosstalk light is transmitted in the opposite direction to the optical receiving component, further reducing the incidence of the crosstalk light on the optical receiving component. To further reduce the return of the crosstalk light from the extinction inner cavity to the inner cavity of the tube body, an extinction member is attached to the inner wall of the extinction inner cavity. The extinction member is used to reduce the incident crosstalk light. To further reduce the return of the crosstalk light from the extinction inner cavity to the inner cavity of the tube body, an isolation member is provided at the light passing hole. The isolation member is used to reduce the crosstalk light returning from the extinction cavity to the inner cavity of the tube body. In the present application, the isolation member and the extinction member cooperate with each other to reduce the crosstalk light returning from the extinction cavity to the inner cavity of the tube body, that is, reduce the influence of the crosstalk light on the first reflected light, thereby improving the accuracy of the detection result and thus improving the OTDR function of the optical module. Description of the Drawings

[0026] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 Partial structure diagram of an optical communication system provided according to some embodiments;

[0028] Figure 2 Partial structure diagram of a host computer provided according to some embodiments;

[0029] Figure 3 Structure diagram of an optical module provided according to some embodiments;

[0030] Figure 4 Exploded view of an optical module provided according to some embodiments;

[0031] Figure 5 Assembly diagram of an optical transceiver component and an optical fiber adapter provided according to some embodiments;

[0032] Figure 6 Exploded view of an optical transceiver component and an optical fiber adapter provided according to some embodiments;

[0033] Figure 7 Assembly diagram of an optical receiving component and a light-blocking member provided according to some embodiments;

[0034] Figure 8 Exploded view of an optical receiving component and a light-blocking member provided according to some embodiments;

[0035] Figure 9 Cross-sectional view of an optical receiving component and a light-blocking member provided according to some embodiments;

[0036] Figure 10 Cross-sectional view of an optical fiber adapter provided according to some embodiments;

[0037] Figure 11 Optical path diagram of the first reflected light provided according to some embodiments;

[0038] Figure 12 Exploded view of a tube body and a second adjusting sleeve provided according to some embodiments;

[0039] Figure 13 Structure diagram of a tube body provided according to some embodiments;

[0040] Figure 14 Structure diagram of the tube body from another perspective provided according to some embodiments;

[0041] Figure 15 A cross-sectional view of a tube body and an optical fiber adapter provided according to some embodiments;

[0042] Figure 16 A cross-sectional view of an optical component and a light-blocking member provided according to some embodiments;

[0043] Figure 17 A structural diagram of a spacer provided according to some embodiments;

[0044] Figure 18 A structural diagram of a first light-absorbing member provided according to some embodiments;

[0045] Figure 19 A cross-sectional view of a tube body provided according to some embodiments;

[0046] Figure 20 A cross-sectional view of the tube body from another perspective provided according to some embodiments;

[0047] Figure 21 A cross-sectional view of a tube body and an optical component provided according to some embodiments;

[0048] Figure 22 A cross-sectional view of an optical transceiver component and an optical fiber adapter provided according to some embodiments;

[0049] Figure 23 An optical path diagram of an optical transceiver component provided according to some embodiments. Detailed implementation manners

[0050] Next, some embodiments of the present disclosure will be clearly and detailedly described in conjunction with the accompanying drawings. However, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided by the present disclosure fall within the protection scope of the present disclosure.

[0051] Unless otherwise required by the context, throughout the specification and claims, the term "comprising" is construed in an open, inclusive sense, i.e., "including, but not limited to"; the terms "first" and "second" should not be construed as indicating or implying relative importance or an upper limit on quantity; the term "plurality" means two or more; the term "connected" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or integrated, can be directly connected, or can be indirectly connected through an intermediate medium; the use of the term "adapted to" or "configured to" implies open and inclusive language, which does not exclude a device adapted to or configured to perform additional tasks or steps; descriptions such as "parallel", "perpendicular", "identical", "consistent", "flush", etc. are not limited to absolute mathematical relationships, but also include an acceptable error range that occurs in practice, and also include differences formed due to manufacturing reasons based on the same design concept.

[0052] In optical communication technology, in order to establish information transfer between information processing devices, it is necessary to load information onto light and utilize the propagation of light to achieve information transfer. Here, the light loaded with information is the optical signal. When the optical signal is transmitted in the information transmission device, the loss of optical power can be reduced, so high-speed, long-distance, and low-cost information transfer can be achieved. The signals that information processing devices can recognize and process are electrical signals. Information processing devices generally include optical network terminals (Optical Network Unit, ONU), gateways, routers, switches, mobile phones, computers, servers, tablets, televisions, etc., and information transmission devices generally include optical fibers and optical waveguides, etc.

[0053] The optical module can realize the mutual conversion between optical signals and electrical signals between the information processing device and the information transmission device. For example, at least one of the optical signal input end or the optical signal output end of the optical module is connected to an optical fiber, and at least one of the electrical signal input end or the electrical signal output end of the optical module is connected to an optical network terminal; the first optical signal from the optical fiber is transmitted to the optical module, and the optical module converts the first optical signal into a first electrical signal and transmits the first electrical signal to the optical network terminal; the second electrical signal from the optical network terminal is transmitted to the optical module, and the optical module converts the second electrical signal into a second optical signal and transmits the second optical signal to the optical fiber. Since information can be transmitted between multiple information processing devices through electrical signals, therefore, at least one of the multiple information processing devices needs to be directly connected to the optical module, and it is not necessary for all information processing devices to be directly connected to the optical module. Here, the information processing device directly connected to the optical module is called the host computer of the optical module. In addition, the optical signal input end or the optical signal output end of the optical module can be called the optical port, and the electrical signal input end or the electrical signal output end of the optical module can be called the electrical port.

[0054] Figure 1 FIG. 1 is a partial structural diagram of an optical communication system provided according to some embodiments. Figure 1 As shown, the optical communication system mainly includes a remote information processing device 1000 , a local information processing device 2000 , a host computer 100 , an optical module 200 , an optical fiber 101 and a network cable 103 .

[0055] One end of the optical fiber 101 extends toward the remote information processing device 1000, and the other end of the optical fiber 101 is connected to the optical module 200 through the optical port of the optical module 200. The optical signal can be totally reflected in the optical fiber 101, and the propagation of the optical signal in the total reflection direction can almost maintain the original optical power. The optical signal undergoes multiple total reflections in the optical fiber 101 to transmit the optical signal from the remote information processing device 1000 to the optical module 200, or to transmit the optical signal from the optical module 200 to the remote information processing device 1000, thereby realizing long-distance, low-power loss information transmission.

[0056] The optical communication system may include one or more optical fibers 101, and the optical fibers 101 are detachably connected or fixedly connected to the optical module 200. The host computer 100 is configured to provide data signals to the optical module 200, receive data signals from the optical module 200, or monitor or control the working state of the optical module 200.

[0057] The host computer 100 includes a substantially rectangular housing and an optical module interface 102 disposed on the housing. The optical module interface 102 is configured to connect to the optical module 200 so that the host computer 100 and the optical module 200 establish a unidirectional or bidirectional electrical signal connection.

[0058] The host computer 100 further includes an external power interface, which can be connected to an electrical signal network. For example, the external power interface includes a Universal Serial Bus (USB) interface or a network cable interface 104, and the network cable interface 104 is configured to connect to a network cable 103, so that the host computer 100 establishes a unidirectional or bidirectional electrical signal connection with the network cable 103. One end of the network cable 103 is connected to the local information processing device 2000, and the other end of the network cable 103 is connected to the host computer 100, so as to establish an electrical signal connection between the local information processing device 2000 and the host computer 100 through the network cable 103. For example, a third electrical signal sent by the local information processing device 2000 is transmitted into the host computer 100 through the network cable 103, the host computer 100 generates a second electrical signal according to the third electrical signal, the second electrical signal from the host computer 100 is transmitted to the optical module 200, the optical module 200 converts the second electrical signal into a second optical signal, and transmits the second optical signal to the optical fiber 101, and the second optical signal is transmitted in the optical fiber 101 to the remote information processing device 1000. For example, a first optical signal from the remote information processing device 1000 propagates through the optical fiber 101, the first optical signal from the optical fiber 101 is transmitted to the optical module 200, the optical module 200 converts the first optical signal into a first electrical signal, the optical module 200 transmits the first electrical signal to the host computer 100, the host computer 100 generates a fourth electrical signal according to the first electrical signal, and transmits the fourth electrical signal into the local information processing device 2000. It should be noted that the optical module is a tool for realizing the mutual conversion between optical signals and electrical signals. In the above conversion process of optical signals and electrical signals, the information does not change, but the encoding and decoding methods of the information can change.

[0059] In addition to including an optical network terminal, the host computer 100 further includes an Optical Line Terminal (OLT), an Optical Network Terminal (ONT), or a data center server, etc.

[0060] Figure 2 It is a partial structure diagram of a host computer provided according to some embodiments. In order to clearly show the connection relationship between the optical module 200 and the host computer 100, Figure 2 only the structure of the host computer 100 related to the optical module 200 is shown. As Figure 2 shown, the host computer 100 further includes a PCB circuit board 105 disposed in the housing, a cage 106 disposed on the surface of the PCB circuit board 105, a radiator 107 disposed on the cage 106, and an electrical connector disposed inside the cage 106. The electrical connector is configured to connect to the electrical port of the optical module 200; the radiator 107 has raised structures such as fins for increasing the heat dissipation area.

[0061] The optical module 200 is inserted into the cage 106 of the host computer 100. The cage 106 fixes the optical module 200, and the heat generated by the optical module 200 is conducted to the cage 106 and then diffused through the radiator 107. After the optical module 200 is inserted into the cage 106, the electrical port of the optical module 200 is connected to the electrical connector inside the cage 106, thereby establishing a two-way electrical signal connection between the optical module 200 and the host computer 100. In addition, the optical port of the optical module 200 is connected to the optical fiber 101, thereby establishing a two-way optical signal connection between the optical module 200 and the optical fiber 101.

[0062] Figure 3 FIG. is a structural diagram of an optical module according to some embodiments. Figure 4 FIG. is an exploded view of an optical module according to some embodiments. As Figure 3 and Figure 4 shown, the optical module 200 includes a shell, a circuit board 300 disposed inside the shell, and an optical transceiver component 900.

[0063] The shell includes an upper shell 201 and a lower shell 202. The upper shell 201 covers the lower shell 202 to form the above-mentioned shell with two openings 204 and 205; the outer contour of the shell generally presents a rectangular body.

[0064] In some embodiments, the lower shell 202 includes a bottom plate 2021 and two lower side plates 2022 located on both sides of the bottom plate 2021 and perpendicular to the bottom plate 2021; the upper shell 201 includes a cover plate 2011, and the cover plate 2011 covers the two lower side plates 2022 of the lower shell 202 to form the above-mentioned shell.

[0065] In some embodiments, the lower shell 202 includes a bottom plate 2021 and two lower side plates 2022 located on both sides of the bottom plate 2021 and perpendicular to the bottom plate 2021; the upper shell 201 includes a cover plate 2011 and two upper side plates located on both sides of the cover plate 2011 and perpendicular to the cover plate 2011. The two upper side plates are combined with the two lower side plates 2022 to realize the upper shell 201 covering the lower shell 202.

[0066] The direction where the line connecting the two openings 204 and 205 is located may be consistent with the length direction of the optical module 200 or may not be consistent with the length direction of the optical module 200. For example, the opening 204 is located at the end of the optical module 200 ( Figure 3 the right end), and the opening 205 is also located at the end of the optical module 200 ( Figure 3The left end). Alternatively, the opening 204 is located at the end of the optical module 200, while the opening 205 is located at the side of the optical module 200. The opening 204 is an electrical port, and the gold fingers of the circuit board 300 extend from the electrical port and are inserted into the electrical connector of the host computer 100; the opening 205 is an optical port and is configured to access an external optical fiber 101 so that the optical fiber 101 is connected to the optical transceiver component 900 in the optical module 200.

[0067] The assembly method of combining the upper housing 201 and the lower housing 202 facilitates the installation of the circuit board 300, the optical transmitting component 400, the optical receiving component 500, etc. into the above-mentioned housing, and the upper housing 201 and the lower housing 202 can encapsulate and protect the above-mentioned devices. In addition, when assembling the circuit board 300, the optical transceiver component 900, etc., it is convenient to deploy the positioning components, heat dissipation components and electromagnetic shielding components of these devices, which is beneficial to the automated implementation of production.

[0068] In some embodiments, the upper housing 201 and the lower housing 202 are made of a metal material, which is beneficial to achieve electromagnetic shielding and heat dissipation.

[0069] In some embodiments, the optical module 200 further includes an unlocking component 600 located outside its housing. The unlocking component 600 is configured to achieve a fixed connection between the optical module 200 and the host computer, or to release the fixed connection between the optical module 200 and the host computer.

[0070] For example, the unlocking component 600 is located outside the two lower side plates 2022 of the lower housing 202 and includes an engaging component that matches the cage 106 of the host computer 100. When the optical module 200 is inserted into the cage 106, the optical module 200 is fixed in the cage 106 by the engaging component of the unlocking component 600; when the unlocking component 600 is pulled, the engaging component of the unlocking component 600 moves accordingly, thereby changing the connection relationship between the engaging component and the host computer to release the fixation between the optical module 200 and the host computer, so that the optical module 200 can be withdrawn from the cage 106.

[0071] The circuit board 300 includes circuit traces, electronic components, and chips, etc. The electronic components and chips are connected according to the circuit design through the circuit traces to achieve functions such as power supply, electrical signal transmission, and grounding. The electronic components can, for example, include capacitors, resistors, triodes, metal-oxide-semiconductor field-effect transistors (MOSFETs). The chips can, for example, include microcontroller units (MCUs), laser driver chips, transimpedance amplifiers (TIAs), limiting amplifiers (LIAs), clock and data recovery chips (CDRs), power management chips, digital signal processing (DSP) chips.

[0072] The circuit board 300 is generally a rigid circuit board. Due to its relatively hard material, the rigid circuit board can also achieve a bearing function. For example, the rigid circuit board can stably bear the above-mentioned electronic components and chips; the rigid circuit board can also be inserted into the electrical connector in the cage 106 of the host computer 100.

[0073] The circuit board 300 also includes a gold finger formed on its end surface. The gold finger is composed of a plurality of independent pins. The circuit board 300 is inserted into the cage 106, and the gold finger is electrically connected to the electrical connector in the cage 106. The gold finger can be provided only on the surface of one side of the circuit board 300 (for example Figure 4 the upper surface shown), or can be provided on the upper and lower surfaces of the circuit board 300 to provide a larger number of pins, so as to adapt to occasions with a large demand for the number of pins. The gold finger is configured to establish an electrical connection with the host computer to achieve functions such as power supply, grounding, inter-integrated circuit (I2C) signal transmission, and data signal transmission. Of course, flexible circuit boards are also used in some optical modules. The flexible circuit board is generally used in cooperation with the rigid circuit board as a supplement to the rigid circuit board.

[0074] In some embodiments, the optical transceiver component 900 is physically separated from the circuit board 300 and then electrically connected through a flexible circuit board or an electrical connector.

[0075] In some embodiments, the optical transceiver component 900 can be directly disposed on the circuit board 300. For example, the optical transceiver component 900 can be disposed on the surface of the circuit board 300 or on the side of the circuit board 300.

[0076] The optical module can have multiple functions, such as the Optical Time Domain Reflectometer (OTDR) function. The optical transceiver component 900 is connected to the fiber optic adapter 700, and the fiber optic adapter 700 is connected to an external optical fiber. The optical transmitting component 400 of the optical transceiver component 900 emits an optical signal into the optical fiber 101. When the optical signal is transmitted in the optical fiber 101, due to abnormal optical links such as the nature of the optical fiber itself, connectors, breaks, or bends, the optical signal generates scattering and reflection in the optical fiber 101. A part of the scattered light and reflected optical signal will return to the optical receiving component. The optical receiving component determines whether the optical link is abnormal based on the time-domain characteristics of the received scattered light signal and reflected optical signal.

[0077] Figure 5 It is an assembly diagram of an optical transceiver component and a fiber optic adapter provided according to some embodiments. Figure 6 It is an exploded view of an optical transceiver component and a fiber optic adapter provided according to some embodiments. As Figure 5 and Figure 6 shown, in some embodiments, the optical transceiver component 900 can include an optical transmitting component 400. The optical transmitting component 400 can have a laser chip. The laser chip can be used to emit an optical signal so that the optical transmitting component 400 can emit an optical signal. Exemplarily, the optical transmitting component 400 is used to emit a transmitted light.

[0078] As Figure 5 and Figure 6 shown, in some embodiments, the optical transceiver component 900 can include an optical receiving component 500. The optical receiving component 500 can have an optical receiving chip. The optical receiving chip can be used to receive an optical signal so that the optical receiving component 500 can receive an optical signal. Exemplarily, the optical receiving component 500 is used to receive a first reflected light.

[0079] In some embodiments, at least one of the optical transmitting component 400 or the optical receiving component 500 can be located on the side of the circuit board 300 away from the gold fingers.

[0080] In some embodiments, the optical transmitting component 400 and the optical receiving component 500 can be physically separated from the circuit board 300 respectively, and then electrically connected to the circuit board 300 through corresponding flexible circuit boards or electrical connectors respectively.

[0081] In some embodiments, at least one of the optical transmitting component or the optical receiving component can be directly disposed on the circuit board 300. For example, at least one of the optical transmitting component or the optical receiving component can be disposed on the surface or the side of the circuit board 300.

[0082] As Figure 5 and Figure 6As shown, in some embodiments, an optical fiber adapter 700 may be disposed inside the housing of the optical module 200. One end of the optical fiber adapter 700 may be connected to the optical fiber 101 to receive the optical signal transmitted by the optical fiber 101 and transmit the optical signal to the optical fiber 101.

[0083] As Figure 5 and Figure 6 As shown, in some embodiments, the optical transceiver component 900 may include a tube body 910. The optical transmitting component 400 may be inserted into the tube body 910 so that the optical signal emitted by the optical transmitting component 400 can be transmitted inside the tube body 910. The optical receiving component 500 may be inserted into the tube body 910 so that the optical receiving component 500 can receive the optical signal transmitted inside the tube body 910. The optical fiber adapter 700 may be inserted into the tube body 910 to receive the optical signal transmitted through the tube body 910. The optical fiber adapter 700 may be inserted into the tube body 910 to transmit the optical signal transmitted by the optical fiber 101 to the tube body 910 and transmit the optical signal inside the tube body 910 to the optical fiber 101.

[0084] As Figure 5 and Figure 6 As shown, in some embodiments, the optical transceiver component 900 may include an optical component 920. The optical component 920 may be used to transmit the optical signal emitted by the optical transmitting component 400 into the optical fiber adapter 700, and may also be used to transmit the optical signal in the optical fiber adapter 700 into the optical receiving component 500.

[0085] In some embodiments, the optical transceiver component 900 is a one-transmit-one-receive component. When the optical transceiver component 900 is a traditional optical transceiver component, the optical transmitting component 400 generates transmitted light of one wavelength, and the optical receiving component 500 receives received light of another wavelength. The transmitted light may also enter the optical receiving component 500, causing crosstalk to the optical receiving component 500. However, when the optical transceiver component 900 is operating normally, received light enters. The intensity of the received light is relatively large, and the intensity of the crosstalk light generated by the transmitted light is relatively small. The crosstalk of the crosstalk light to the received light is extremely small and will not affect the receiving sensitivity of the received light.

[0086] However, when the optical transceiver component 900 uses the OTDR function to detect the optical fiber, the optical transmitting component 400 generates a wavelength of emission light. When the optical transceiver component 900 is working normally, no receiving light is injected. Only when the optical fiber has an abnormality such as a breakpoint, the emission light in the optical fiber 10 is scattered and reflected in the optical fiber 101 to generate the first reflected light. The first reflected light is injected into the optical transceiver component 900, and the optical receiving component 500 will receive the first reflected light of the optical fiber. If the optical transceiver component 900 is working normally, because the wavelength of the emission light emitted by the optical transmitting component 400 is the same as the wavelength of the first reflected light, the crosstalk light generated by the emission light may be injected into the optical receiving component 500. At this time, the crosstalk light will cause signal crosstalk, and the technician will misjudge that the optical fiber is abnormal, affecting the OTDR function of the optical module.

[0087] To solve this problem, in some embodiments, the optical component 920 may include an isolator to isolate the crosstalk light. Alternatively, the optical component 920 may include a light-extinguishing member to eliminate the crosstalk light of the tube body 910. Alternatively, the optical component 920 may include a first light-absorbing sheet to absorb the crosstalk light. Alternatively, a light-blocking member 950 is provided outside the light receiving component 500 to block the crosstalk light.

[0088] Figure 7 The figure is an assembly diagram of a light receiving component and a light blocking member according to some embodiments. Figure 8 Detailed description of the invention The figure is an exploded view of a light receiving component and a light blocking component according to some embodiments. Figure 9 is a cross-sectional view of a light receiving component and a light blocking member according to some embodiments. Figure 7 , Figure 8 and Figure 9 As shown, in some embodiments, the optical receiving component 500 may include a receiving socket 503. A light receiving chip may be disposed on the receiving socket 503. The light receiving chip is used to receive optical signals.

[0089] In some embodiments, the wavelength of the optical signal emitted by the optical emitting component 400 is the same as the wavelength of the optical signal received by the optical receiving component 500. For example, the wavelength of the emitted light emitted by the optical emitting component 400 and the first reflected light received by the optical receiving component 500 are the same.

[0090] Figure 7 , Figure 8 and Figure 9 As shown, in some embodiments, the optical receiving component 500 may include a receiving pin 504. One end of the receiving pin 504 may be connected to the circuit board 300 through a flexible circuit board. The other end of the receiving pin 504 may pass through the receiving socket 503 to connect to the electronic device on the receiving socket 503.

[0091] Figure 7 , Figure 8 andFigure 9 As shown, in some embodiments, the optical receiving component 500 may include a receiving tube cap 502. The first end of the receiving tube cap 502 may receive the top surface connection of the tube seat 503. The second end of the receiving tube cap 502 may be provided with a first lens 501. The first lens 501 may be a focusing lens, so that the optical signal in the tube body 911 is focused to the optical receiving chip through the first lens 501.

[0092] Figure 7 , Figure 8 and Figure 9 As shown, in some embodiments, a light blocking member 950 may be provided on the receiving tube cap 502. The light blocking member 950 may be covered on the first lens 501 to block the crosstalk light from being incident on the first lens 501. The light blocking member 950 may have a first light through hole 951, so that the optical signal in the tube body 911 is incident on the first lens 501 through the first light through hole 951 of the light blocking member 950. For example, the first reflected light is incident on the first lens 501 through the first light through hole 951 of the light blocking member 950.

[0093] In some embodiments, the light blocking member 950 is connected to the receiving tube cap 502 by glue, so that the light blocking member 950 is fixedly connected to the receiving tube cap 502 .

[0094] Figure 7 , Figure 8 and Figure 9 As shown, in some embodiments, the light blocking member 950 may include a first light blocking portion 952. A first end of the first light blocking portion 952 may be connected to the receiving tube cap 502.

[0095] In some embodiments, the size of the first light blocking portion 952 is larger than the size of the first lens 501, so as to block the optical signal in the tube body 911 from being incident on the first lens 501 through the first light blocking portion 952. For example, the size of the first light blocking portion 952 is larger than the size of the first lens 501, so as to block the crosstalk light in the tube body 911 from being incident on the first lens 501 through the first light blocking portion 952.

[0096] Figure 7 , Figure 8 and Figure 9 As shown, in some embodiments, the light blocking member 950 may include a second light blocking portion 953. The second light blocking portion 953 may be connected to the second end of the first light blocking portion 952. The second light blocking portion 953 may have a first light through hole 951.

[0097] In some embodiments, the size of the light-passing hole surrounded by the first light-blocking portion 952 may be greater than or equal to the size of the first light-passing hole 951, so as to block the crosstalk light in the tube body 911 from entering the first lens 501 through the area other than the first light-passing hole 951 in the second light-blocking portion 953. Exemplarily, the radius size of the light-passing hole surrounded by the first light-blocking portion 952 may be greater than or equal to the radius size of the first light-passing hole 951.

[0098] Figure 10 is a cross-sectional view of an optical fiber adapter provided according to some embodiments. As Figure 10 shown, in some embodiments, the optical fiber adapter 700 may include an optical fiber ferrule 704. The optical fiber ferrule 704 may be docked with the optical fiber ferrule of the optical fiber 101 to achieve the coupling connection of the optical signal inside and outside the optical module.

[0099] In some embodiments, the optical fiber end face of the optical fiber ferrule 704 is an inclined plane, that is, the first preset angle between the optical fiber end face of the optical fiber ferrule 704 and the vertical plane is non-0°, so that the reflection direction of the emitted light incident on the optical fiber end face deviates from the incident direction of the emitted light, thereby reducing the emitted light reflected by the optical fiber end face from returning along the original path.

[0100] In some embodiments, the vertical distance between the upper end of the optical fiber end face of the optical fiber ferrule 704 and the end of the optical fiber ferrule 704 is greater than the vertical distance between the lower end of the optical fiber end face of the optical fiber ferrule 704 and the end of the optical fiber ferrule 704, so that the optical fiber ferrule 704 inclines downward along the vertical plane towards the end of the optical fiber ferrule 704. As Figure 10 shown, the optical fiber ferrule 704 inclines downward to the right along the vertical plane.

[0101] In some embodiments, the first preset angle between the optical fiber end face of the optical fiber ferrule 704 and the vertical plane is 8° to 12°. Exemplarily, the first preset angle between the optical fiber end face of the optical fiber ferrule 704 and the vertical plane is 8° to 10°, and the first preset angle between the optical fiber end face of the optical fiber ferrule 704 and the vertical plane is 11° to 12°.

[0102] As Figure 10 shown, in some embodiments, the optical fiber adapter 700 may include a connection sleeve 701. The optical fiber ferrule 704 may be disposed in the connection sleeve 701.

[0103] As Figure 10 shown, in some embodiments, the optical fiber adapter 700 may include an outer sleeve 702. One end of the outer sleeve 702 may be inserted into the connection sleeve 701 to connect the outer sleeve 702 and the connection sleeve 701.

[0104] As Figure 10As shown, in some embodiments, the optical fiber adapter 700 may include an inner sleeve 703. The inner sleeve 703 may be disposed within an outer sleeve 702. The first end of the optical fiber ferrule 704 may be inserted into a region of the connection sleeve 701 that is not the inner sleeve 703. The second end of the optical fiber ferrule 704 may be inserted into the inner sleeve 703.

[0105] As Figure 10 shown, in some embodiments, the optical fiber ferrule 704 and the connection sleeve 701 may be horizontally disposed.

[0106] Since the optical fiber ferrule 704 cannot be directly connected to the tube body 910, an adapter may be provided between the optical fiber ferrule 704 and the tube body 910 to connect the tube body 910 to the optical fiber ferrule 704.

[0107] In some embodiments, the adapter may be the connection sleeve 701.

[0108] Figure 11 is an optical path diagram of the first reflected light provided according to some embodiments. Figure 11 In (1), the surface of the tube body 910 facing away from the light emitting component 400 is not inclined, or the optical fiber ferrule and the adapter are not inclined. Figure 11 In (2), the surface of the tube body 910 facing away from the light emitting component 400 is inclined, or the optical fiber ferrule and the adapter are inclined. α is the inclination angle of the optical fiber end face, i.e., the first preset angle; β is the inclination angle of the surface of the tube body 910 facing away from the light emitting component 400, or the inclination angle of the optical fiber ferrule, i.e., the second preset angle.

[0109] As Figure 11 shown, the law of refraction: n 光纤 *sinα = n 空气 *sin(α + β). According to the law of refraction and the inclination angle of the optical fiber end face, the inclination angle of the first end face, or the inclination angle between the optical fiber ferrule and the adapter, can be obtained.

[0110] The second preset relationship between the first preset angle and the second preset angle is: n 光纤 *sinα = n 空气 *sin(α + β).

[0111] As Figure 11 shown, the surface of the tube body 910 facing away from the light emitting component 400 is inclined, or the optical fiber ferrule and the adapter are inclined. The inclination angle of the optical fiber end face of the optical fiber ferrule 704 increases from the first angle to the second angle, such that the direction of the first reflected light incident on the tube body 910 through the optical fiber end face changes from inclined upward to horizontal.

[0112] According to the principle of reversibility of light path, the emitted light is horizontally incident on the end face of the optical fiber. At this time, the coincidence degree between the incident angle of the emitted light on the end face of the optical fiber and the light receiving angle of the end face of the optical fiber is relatively large, and the coupling efficiency is also relatively high.

[0113] In order to make the first reflected light enter the tube body 910 horizontally through the end face of the optical fiber, in some embodiments, the optical fiber ferrule 704 can be inclined with respect to the adapter.

[0114] Since the first preset angle is 8° to 12°, according to the law of refraction, the second preset angle can be 3.7° to 5.8°.

[0115] In order to increase the inclination angle of the end face of the optical fiber of the optical fiber ferrule 704, in some embodiments, the inclination direction of the optical fiber ferrule 704 with respect to the adapter is different from the inclination direction of the end face of the optical fiber of the optical fiber ferrule 704.

[0116] In order to make the first reflected light enter the tube body 910 horizontally through the end face of the optical fiber, in some embodiments, the surface of the tube body 910 facing away from the light emitting component 400 can be an inclined surface. That is, the second preset angle between the surface of the tube body 910 facing away from the light emitting component 400 and the vertical plane is non-zero.

[0117] The surface of the tube body 910 facing away from the light emitting component 400 is an inclined surface, the central axis of the adapter is inclined upward to the right, the central axis of the optical fiber ferrule 704 is inclined upward to the right, and the inclination angle of the end face of the optical fiber of the optical fiber ferrule 704 increases from the first angle to the second angle, so that the direction of the first reflected light entering the tube body 910 through the end face of the optical fiber changes from inclined upward to horizontal.

[0118] In some embodiments, the second preset angle (i.e., the inclination angle of the surface of the tube body 910 facing away from the light emitting component 400) between the surface of the tube body 910 facing away from the light emitting component 400 and the vertical plane can be 3.7° to 5.8°. For example, the second preset angle between the surface of the tube body 910 facing away from the light emitting component 400 and the vertical plane is 3.7° to 4.5°, and the second preset angle between the surface of the tube body 910 facing away from the light emitting component 400 and the vertical plane is 4.6° to 5.8°.

[0119] In order to increase the inclination angle of the end face of the optical fiber of the optical fiber ferrule 704, in some embodiments, the inclination direction of the surface of the tube body 910 facing away from the light emitting component 400 is the same as the inclination direction of the end face of the optical fiber of the optical fiber ferrule 704.

[0120] Figure 12 FIG. is an exploded view of the tube body and the second adjusting sleeve according to some embodiments. Figure 13 FIG. is a structural diagram of the tube body according to some embodiments. Figure 14 FIG. is a structural diagram of the tube body from another perspective according to some embodiments. AsFigure 12 , Figure 13 and Figure 14 As shown in Figure 12 , Figure 13 and Figure 14 , in some embodiments, a second adjustment sleeve 710 may be further disposed in the housing of the optical module 200. One end of the second adjustment sleeve 710 may be connected to the tube body 910. The other end of the second adjustment sleeve 710 may be connected to the fiber optic adapter 700. One end of the second adjustment sleeve 710 is connected to the tube body 910, and the other end of the second adjustment sleeve 710 may be connected to the fiber optic adapter 700, so that the fiber optic adapter 700 and the tube body 910 can be connected through the second adjustment sleeve 710.

[0121] In some embodiments, one end face of the second adjustment sleeve 710 is welded to one end face of the tube body 910, so that the second adjustment sleeve 710 is fixedly connected to the tube body.

[0122] In some embodiments, the fiber optic adapter 700 may be inserted into the other end of the second adjustment sleeve 710, and the fiber optic adapter 700 is welded to the inner wall of the second adjustment sleeve 710, so that the second adjustment sleeve 710 is fixedly connected to the fiber optic adapter 700.

[0123] In some embodiments, the second adjustment sleeve 710 may serve as an adapter between the tube body 910 and the fiber optic ferrule 704.

[0124] In some embodiments, the combination of the second adjustment sleeve 710 and the connection sleeve 701 may serve as an adapter between the tube body 910 and the fiber optic ferrule 704.

[0125] As Figure 12 , Figure 13 and Figure 14 As shown in Figure 12 , Figure 13 and Figure 14 , in some embodiments, the tube body 910 may include a first adjustment sleeve 912. A first placement through hole may be formed in the first adjustment sleeve 912. The optical emission component 400 may be placed in the first placement through hole, so that the optical emission component 400 is connected to the tube body 910.

[0126] In some embodiments, the end face area of the first adjustment sleeve 912 may be larger than the end face area of the optical emission component 400, so that the optical emission component 400 can be inserted into the first adjustment sleeve 912, and further the optical emission component 400 is connected to the tube body 910.

[0127] As Figure 12 , Figure 13 and Figure 14As shown, in some embodiments, the tube body 910 may include a tube body main body 911. The first end of the tube body main body 911 may be connected to the first adjustment sleeve 912. The first end of the tube body main body 911 may have a first tube opening. The first tube opening may communicate with the first object placement through hole, so that the emitted light emitted by the light emitting component 400 is transmitted to the tube body main body 911 through the first object placement through hole and the first tube opening. The first tube opening may communicate with the inner cavity of the tube body 910, so that the emitted light is incident on the inner cavity of the tube body 910 through the first tube opening.

[0128] In some embodiments, the end face of the first adjustment sleeve 912 is welded to the first side wall of the tube body main body 911, so that the first adjustment sleeve 410 is fixedly connected to the tube body main body 911. The first adjustment sleeve 912 can facilitate the welding of the light emitting component 400 to the tube body main body 911, and can also increase the welding area between the light emitting component 400 and the tube body main body 911, thereby increasing the welding firmness.

[0129] In some embodiments, the tube body main body 911 and the first adjustment sleeve 912 may be an integrally formed structure.

[0130] In some embodiments, the second end of the tube body main body 911 may be connected to one end of the second adjustment sleeve 710. The second end of the tube body main body 911 may have a third tube opening 903. The third tube opening 903 may communicate with the inner cavity of the tube body 910, so that the optical signal can be incident on the inner cavity of the tube body 910 through the third tube opening 903. The third tube opening 903 may communicate with the second through hole of the second adjustment sleeve 710, so that the optical signal of the tube body main body 911 is transmitted to the fiber optic adapter 700 through the second through hole, and the optical signal of the fiber optic adapter 700 is transmitted to the tube body main body 911 through the second through hole.

[0131] In some embodiments, the middle of the tube body main body 911 may have a second tube opening 902. The second tube opening 902 may be located between the first tube opening and the third tube opening 903. The light receiving component 500 may be inserted into the second tube opening 902, so that the light receiving component 500 is connected to the tube body main body 911, and further enables the light receiving component 500 to receive the optical signal in the tube body main body 911. The second tube opening 902 may communicate with the inner cavity of the tube body 910, so that the optical signal in the inner cavity of the tube body 910 can be incident on the light receiving component 500 through the second tube opening 902.

[0132] In some embodiments, an extinction cavity may be provided in the middle of the tube body 911. The extinction cavity may communicate with the inner cavity of the tube 910, so that the crosstalk light generated by the emitted light in the inner cavity of the tube 910 can enter the extinction cavity. The extinction cavity is disposed opposite to the light receiving component 500, so that the crosstalk light is transmitted in the opposite direction to the light receiving component 500, further reducing the incidence of the crosstalk light on the light receiving component 500. The extinction cavity may be closed or open to the outside. When the extinction cavity is open to the outside, a fourth nozzle 904 may be formed. The fourth nozzle 904 may be disposed opposite to the second nozzle 902. The fourth nozzle 904 may be located between the first nozzle and the third nozzle 903. The fourth nozzle 904 may communicate with the inner cavity of the tube 910, so that the first crosstalk light in the inner cavity of the tube 910 can enter the fourth nozzle 904.

[0133] As Figure 12 , Figure 13 and Figure 14 shown, the tube body 911 may include a first side wall 9112. The first side wall 9112 may be located at the second end of the tube body 911. The first side wall 9112 may be connected to the fiber optic adapter 700. The first side wall 9112 may have a third nozzle 903.

[0134] In some embodiments, the surface of the first side wall 9112 facing away from the light emitting component 400 is a first end face, and the first end face may be an inclined surface, so that the first reflected light is horizontally incident on the tube 910 through the fiber end face. That is, the second preset angle between the first end face and the vertical plane is non-zero.

[0135] In some embodiments, the second preset angle between the first end face and the vertical plane may be 3.7° to 5.8°. Exemplarily, the second preset angle between the first end face and the vertical plane is 3.7° to 4.5°, and the second preset angle between the first end face and the vertical plane is 4.6° to 5.8°.

[0136] As Figure 12 , Figure 13 and Figure 14 shown, the tube body 911 may include a second side wall 9111. The second side wall 9111 may be located at the first end of the tube body 911. The second side wall 9111 may be disposed opposite to the first side wall 9112. The second side wall 9111 may be connected to the first adjustment sleeve 912. The second side wall 9111 may have a first nozzle.

[0137] In some embodiments, the surface of the second side wall 9111 facing away from the fiber optic adapter 700 is a second end face, and the second end face may be an inclined surface. That is, the third preset angle between the second end face and the vertical plane is non-zero.

[0138] In some embodiments, the third preset angle between the second end face and the vertical plane is 3.7° to 5.8°. For example, the third preset angle between the second end face and the vertical plane is 3.7° to 4.5°, and the third preset angle between the second end face and the vertical plane is 4.6° to 5.8°.

[0139] The optical module realizes the assembly of the optical transceiver component 900 and the fiber optic adapter 700 through the coupling welding tooling. After the optical transceiver component 900 is rotated counterclockwise from the first placement direction (left - second side wall 9111, right - first side wall 9112) to the second placement direction (down - second side wall 9111, up - first side wall 9112), the second end face of the second side wall 9111 of the tube body 911 is clamped on the coupling welding tooling.

[0140] If the first end face of the first side wall 9112 and the second end face of the second side wall 9111 are not parallel, in order to ensure that the second end face of the second side wall 9111 is horizontal in the second placement direction, the coupling welding tooling needs to be made into an inclined surface to clamp the second end face of the second side wall 9111. However, the machining error of making the coupling welding tooling into an inclined surface is relatively large, which will result in poor flatness of the first end face of the first side wall 9112 in the second placement direction, and further cause the first end face of the first side wall 9112 and the fiber optic adapter 700 not to be perpendicular to each other, thus affecting the coupling efficiency of the optical signal between the tube body 911 and the fiber optic adapter 700. Therefore, in some embodiments, the angle difference between the second preset angle and the third preset angle can be equal to 0°, so that the second end face of the second side wall 9111 and the first end face of the first side wall 9112 are parallel to each other.

[0141] The first end face of the first side wall 9112 and the second end face of the second side wall 9111 are parallel to each other, ensuring good flatness of the second end face of the second side wall 9111 in the second placement direction, so that the fiber optic adapter 700 is vertically arranged with respect to the second end face of the second side wall 9111, that is, the vertical distance between the second end face of the second side wall 9111 and the fiber optic adapter 700 is equal, thereby improving the coupling efficiency of the optical signal between the tube body 911 and the fiber optic adapter 700.

[0142] Due to the existence of machining tolerances, the angle difference between the first inclination angle of the first end face and the second inclination angle of the second end face is within the first preset range. The first preset range is -0.3° to 0.3°. For example, the angle difference between the first inclination angle of the first end face and the second inclination angle of the second end face is within -0.3° to 0.3.

[0143] Such as Figure 12 、 Figure 13 and Figure 14As shown, in some embodiments, the tube body 911 may include a third sidewall 9113 (top end). The third sidewall 9113 may be located between the second sidewall 9111 and the first sidewall 9112. One end of the third sidewall 9113 may be connected to the second sidewall 9111. The other end of the third sidewall 9113 may be connected to the first sidewall 9112. The third sidewall 9113 may have a second pipe orifice 902.

[0144] As Figure 12 , Figure 13 and Figure 14 As shown, in some embodiments, the tube body 911 may include a fifth sidewall 9114. The fifth sidewall 9114 may be located between the second sidewall 9111 and the first sidewall 9112. One end of the fifth sidewall 9114 may be connected to the second sidewall 9111. The other end of the fifth sidewall 9114 may be connected to the first sidewall 9112. One side of the fifth sidewall 9114 may be connected to the third sidewall 9113.

[0145] As Figure 12 , Figure 13 and Figure 14 As shown, in some embodiments, the tube body 911 may include a fourth sidewall 9115. The fourth sidewall 9115 may be located between the second sidewall 9111 and the first sidewall 9112. One end of the fourth sidewall 9115 may be connected to the second sidewall 9111. The other end of the fourth sidewall 9115 may be connected to the first sidewall 9112. One side of the fourth sidewall 9115 may be connected to the other side of the fifth sidewall 9114. The fourth sidewall 9115 may have a light extinction cavity.

[0146] As Figure 12 , Figure 13 and Figure 14 As shown, in some embodiments, the tube body 911 may include a sixth sidewall 9116. The sixth sidewall 9116 may be located between the second sidewall 9111 and the first sidewall 9112. One end of the sixth sidewall 9116 may be connected to the second sidewall 9111. The other end of the sixth sidewall 9116 may be connected to the first sidewall 9112. One side of the sixth sidewall 9116 may be connected to the other side of the fourth sidewall 9115. The other side of the sixth sidewall 9116 may be connected to the other side of the third sidewall 9113.

[0147] First, the third sidewall 9113, the fifth sidewall 9114, the fourth sidewall 9115 and the sixth sidewall 9116 are connected end to end in sequence, and then are respectively connected to the second sidewall 9111 and the first sidewall 9112, so that the tube body 911 is an oblique hexahedron.

[0148] Figure 15 It is a cross-sectional view of a tube body and an optical fiber adapter provided according to some embodiments. As Figure 15As shown, in some embodiments, the first end face of the first side wall 9112 is inclined toward the lower right, the central axis of the second adjusting sleeve 710 is inclined toward the upper right, the central axis of the optical fiber ferrule 704 is inclined toward the upper right, and the inclination angle of the optical fiber end face of the optical fiber ferrule 704 is increased from the first angle to the second angle, so that the direction of the first reflected light incident into the tube body 910 through the optical fiber end face changes from inclined upward to horizontal.

[0149] Figure 16 FIG. 4 is a cross-sectional view of an optical component and a light blocking member according to some embodiments. Figure 16 As shown, in some embodiments, the optical component 920 may include a filter 921. The filter 921 may be located in the inner cavity of the tube body 910. The filter 921 may be located on the optical path to allow the optical signal passing through the filter 921 to be transmitted and / or reflected.

[0150] For example, the optical filter 921 may be located on the transmission optical path of the optical emitting component 400 to transmit the transmission light emitted by the optical emitting component 400. The optical filter 921 may be located on the receiving optical path of the optical receiving component 500 to allow the optical signal reflected by the optical filter 921 to be received by the optical receiving component 500. The optical filter 921 may be located at the intersection of the transmission optical path of the optical emitting component 400 and the receiving optical path of the optical receiving component 500 to allow the optical signal emitted by the optical emitting component 400 to pass through the optical filter 921 and enter the optical fiber adapter 700, and the optical signal reflected by the optical filter 921 is received by the optical receiving component 500.

[0151] In some embodiments, the filter 921 is tilted so that the optical signal transmitted by the optical fiber adapter 700 is reflected by the filter 921 and then received by the light receiving component 500. For example, the tilt angle of the filter 921 is 45°.

[0152] The emission light emitted by the optical emitting component 400 passes through the filter 921 and enters the optical fiber adapter 700. Most of the emission light is incident on the optical fiber adapter 700 and is transmitted to the optical fiber 101 through the optical fiber adapter 700. A small part of the emission light is reflected on the optical fiber end face of the optical fiber ferrule 704 of the optical fiber adapter 700 to form a second reflected light. The second reflected light may return to the optical emitting component 400 along the original path, thereby affecting the luminous performance of the optical emitting component 400.

[0153] In order to ensure the luminous performance of the light emitting component 400, as Figure 16As shown, in some embodiments, the optical component 920 may include a first isolator 922. The first isolator 922 may be located in the inner cavity of the tube body 910. The first isolator 922 may be located between the light emitting component 400 and the filter 921. The emitted light emitted by the light emitting component 400 directly passes through the first isolator 922 and the filter 921 and enters the fiber optic adapter 700. The optical signal transmitted through the filter 921 cannot pass through the first isolator 922 to ensure the light emitting performance of the light emitting component 400.

[0154] The first reflected light returns to the tube body 910 through the fiber optic adapter 700. Part of the first reflected light passes through the filter 921 and then enters the light emitting component 400. Part of the first reflected light is reflected again at the filter 921. The first reflected light after the re - reflection enters the light receiving component 500. The light receiving component 500 converts the received first reflected light into a first electrical signal. The devices on the circuit board 300 obtain the abnormal conditions of the optical fiber 101 based on the first electrical signal.

[0155] In some embodiments, the filter 921 is a semi - transparent and semi - reflective diaphragm. Part of the optical signal of the tube body 910 is transmitted and part is reflected by the filter 921. Exemplarily, part of the emitted light emitted by the light emitting component 400 is transmitted through the filter 921 to the fiber optic adapter 700 and part is reflected. Part of the first reflected light transmitted by the fiber optic adapter 700 to the tube body 910 is transmitted through the filter 921 and part is reflected to the light receiving component 500.

[0156] The outer part of the first lens 501 of the light receiving component 500 is covered with a light blocking member 950. The first light passing hole 951 of the light blocking member 950 may allow the first reflected light to enter the light receiving component 500. In order to enable the first reflected light to enter the light receiving component 500 after being reflected by the filter 921, as Figure 16 shown, in some embodiments, the first light passing hole 951 of the light blocking member 950 may be located on the reflection light path of the first reflected light reflected by the filter 921. The first light passing hole 951 of the light blocking member 950 is located on the reflection light path of the first reflected light reflected by the filter 921, so that the first reflected light can enter the light receiving component 500 through the first light passing hole 951 of the light blocking member 950 after being reflected by the filter 921. Exemplarily, the first light passing hole 951 of the light blocking member 950 may be located directly above the filter 921.

[0157] The emitted light emitted by the light emitting component 400 is reflected at the filter 921 to generate a third reflected light. The third reflected light undergoes diffuse reflection in the tube body main body 911 to form a first crosstalk light. The first crosstalk light may pass through the filter 921 and then enter the light receiving component 500, causing crosstalk to the first reflected light, thereby affecting the OTDR function of the optical module.

[0158] In some embodiments, the optical component 920 may include an extinction member to reduce the first crosstalk light generated by the emitted light from entering the optical receiving component 500. The extinction member may be located within an extinction cavity. The extinction member may be located below the filter 921 to reduce the first crosstalk light.

[0159] In some embodiments, the extinction member may include a first extinction member 925. The first extinction member 925 may be located on the reflection optical path of the emitted light reflected by the filter 921 to reduce the first crosstalk light. Exemplarily, the first extinction member 925 may be located below the filter 921.

[0160] In some embodiments, the first extinction member 925 may be a light-absorbing member. Since the first light-absorbing member was mentioned previously, for the sake of distinction, the light-absorbing member here is the second light-absorbing member. The second light-absorbing member may be located directly below the filter 921 to absorb the first crosstalk light.

[0161] In some embodiments, a light-absorbing layer may be plated on the glass sheet to form a light-absorbing member.

[0162] The light-absorbing layer may be an extinction paint layer. The extinction paint layer may absorb data light of all wavelengths hitting the inner wall of the extinction cavity (which may include the fourth pipe orifice 904).

[0163] The light-absorbing layer may be a structural layer obtained by treating the inner wall of the extinction cavity (which may include the fourth pipe orifice 904) with a blackening process. The structural layer obtained by the blackening process absorbs data light of all wavelengths hitting the inner wall of the extinction cavity (which may include the fourth pipe orifice 904).

[0164] As Figure 16 shown, in some embodiments, the first extinction member 925 may be a light-transmitting member. The light-transmitting member may be located directly below the filter 921 so that the first crosstalk light can pass through the light-transmitting member and exit the tube body 910.

[0165] In some embodiments, an antireflection film may be plated on the glass sheet to form a light-transmitting member.

[0166] In some embodiments, the first crosstalk light may include third reflected light.

[0167] The first reflected light may pass through the filter 921 and enter between the filter 921 and the first isolator 922. Therefore, in some embodiments, the first crosstalk light may include the first reflected light transmitted through the filter 921.

[0168] The second reflected light may pass through the filter 921 and enter between the filter 921 and the first isolator 922, that is, the second reflected light is on the left side of the filter 921. Therefore, in some embodiments, the first crosstalk light may include the second reflected light transmitted through the filter 921.

[0169] As Figure 16 shown, in some embodiments, the extinction member may include a second extinction member 926. The second extinction member 926 may be located above the first extinction member 925.

[0170] In some embodiments, the second extinction member 926 may be a light-absorbing member. Since the first light-absorbing member and the second light-absorbing member are mentioned above, for the sake of distinction, the light-absorbing member here is the third light-absorbing member. The third light-absorbing member may absorb the first crosstalk light reflected by the first extinction member 925.

[0171] In some implementations, the second extinction member 926 may be a reflective sheet. The reflective sheet may be located above the first extinction member 925 to receive the first crosstalk light reflected by the first extinction member 925 and reflect the received first crosstalk light to the first extinction member 925.

[0172] Exemplarily, the first extinction member 925 is a light-transmitting sheet, and the second extinction member 926 is a reflective sheet. Most of the first crosstalk light is transmitted out of the tube body 910 through the light-transmitting member, a small part of the first crosstalk light is reflected to the reflective sheet, then reflected to the light-transmitting member by the reflective sheet, and finally transmitted out of the tube body 910 through the light-transmitting member.

[0173] To reduce the first crosstalk light from returning along the original path, as Figure 16 shown, in some embodiments, the optical component 920 may include a separator 924. The separator 924 may be located on the reflection optical path of the emitted light reflected by the filter 921 to reduce the first crosstalk light. Exemplarily, the separator 924 may be located below the filter 921.

[0174] In some embodiments, the separator 924 may be located at the connection between the inner cavity of the tube body 910 and the extinction cavity. The separator 924 may be located between the filter 921 and the extinction member to reduce the first crosstalk light incident on the extinction member from returning along the original path.

[0175] The second reflected light is reflected in the tube body on the right side of the filter 921 to form the second crosstalk light. The second crosstalk light may enter the optical receiving component 500, causing crosstalk to the first reflected light, thereby affecting the OTDR function of the optical module.

[0176] To reduce the second crosstalk light generated by the emitted light from entering the optical receiving component 500, as Figure 16As shown, in some embodiments, the optical component 920 may include a first light absorbing member 923. The first light absorbing member 923 may be located in the inner cavity of the tube body 910. The first light absorbing member 923 may be located between the filter 921 and the fiber optic adapter 700. The first light absorbing member 923 may be located on the reflection optical path of the emitted light reflected at the fiber end face to absorb the second reflected light, reduce the second crosstalk light formed by the reflection of the second reflected light in the tube body on the right side of the filter 921, and further reduce the crosstalk of the second crosstalk light to the first reflected light.

[0177] Figure 17 Structural diagram of the isolator provided according to some embodiments. As Figure 16 and Figure 17 As shown, in some embodiments, the isolator 924 may include a first isolation portion 9241. The first isolation portion 9241 may have a fourth light passing hole 9243.

[0178] As Figure 16 and Figure 17 As shown, in some embodiments, the isolator 924 may include a second isolation portion 9242. The second isolation portion 9242 may have a fifth light passing hole 9244. One end of the second isolation portion 9242 may be connected to the first isolation portion 9241 so that the fourth light passing hole 9243 and the fifth light passing hole 9244 are in communication.

[0179] In some embodiments, the size of the fourth light passing hole 9243 surrounded by the first isolation portion 9241 is smaller than the size of the fifth light passing hole 9244 surrounded by the second isolation portion 9242. Exemplarily, the radius size of the fourth light passing hole 9243 is smaller than the radius size of the fifth light passing hole 9244.

[0180] The second isolation portion 9242 is closer to the filter 921 than the first isolation portion 9241, and the first isolation portion 9241 is closer to the extinction member than the second isolation portion 9242. The size of the fifth light passing hole 9244 is larger than the size of the fourth light passing hole 9243, so that more first crosstalk light can be sequentially incident into the extinction member through the fifth light passing hole 9244 and the fourth light passing hole 9243. However, since the size of the fourth light passing hole 9243 is smaller than the size of the fifth light passing hole 9244, most of the first crosstalk light incident into the extinction member is reflected by the extinction member and incident on the outer side wall of the isolator 924, and a small part is sequentially returned to between the filter 921 and the first isolator 922 through the fourth light passing hole 9243 and the fifth light passing hole 9244.

[0181] In some embodiments, an inner wall of the spacer 924 may be provided with a light-absorbing layer. The light-absorbing layer may be used to absorb the first crosstalk light passing through the light-transmitting hole of the spacer 924. For example, when the first crosstalk light enters the extinction cavity from the inner cavity of the tube body through the light-transmitting hole of the spacer 924, the light-absorbing layer on the inner wall of the spacer 924 may absorb the first crosstalk light to reduce the first crosstalk light incident on the extinction cavity. When the first crosstalk light enters the inner cavity of the tube body from the extinction cavity through the light-transmitting hole of the spacer 924, the light-absorbing layer on the inner wall of the spacer 924 may absorb the first crosstalk light to reduce the first crosstalk light incident on the inner cavity of the tube body.

[0182] In some embodiments, the spacer 924 may be an isolator. Since the first isolator is mentioned above, for the sake of distinction, the isolator here is defined as the second isolator. The second isolator may be located between the filter 921 and the extinction member to prevent the first crosstalk light incident on the extinction member from returning along the original path.

[0183] The isolator adjusts the polarization state of the passing optical signal so that it has the characteristics of forward transmission and reverse isolation of the optical signal.

[0184] The isolator includes a first polarizer, a Faraday rotator, and a second polarizer, which are connected in sequence. Since the Faraday rotator only rotates in the same direction, the polarized light passing through the first polarizer cannot return to the first polarizer after being rotated by the Faraday rotator, so that the isolator has the characteristics of forward transmission and reverse isolation.

[0185] Figure 18 It is a structural diagram of the first light-absorbing member provided according to some embodiments. As Figure 16 and Figure 18 shown, in some embodiments, the first light-absorbing member 923 may include a light-absorbing surface 9231. The light-absorbing surface 9231 may be disposed opposite to the bottom surface of the first light-absorbing member 923. The light-absorbing surface 9231 may face the fiber optic adapter 700 to absorb the second reflected light reflected from the end face of the optical fiber of the fiber optic ferrule 704.

[0186] In some embodiments, the bottom surface of the first light-absorbing member 923 may be used as a horizontal plane.

[0187] In some embodiments, the light-absorbing surface 9231 may be an inclined surface, that is, the fourth preset angle between the light-absorbing surface 9231 and the horizontal plane is non-0°, so as to reduce the incident angle of the second reflected light reflected from the end face of the optical fiber of the fiber optic ferrule 704, and further make the second reflected light (i.e., the second crosstalk light) after being reflected by the light-absorbing surface 9231 hit the outer wall of the light-blocking member 950, thereby reducing the second crosstalk light from entering the optical receiving component 500 through the first light-transmitting hole 951. For example, the fourth preset angle between the light-absorbing surface 9231 and the bottom surface of the first light-absorbing member 923 is non-0°, so that the light-absorbing surface 9231 may be an inclined surface.

[0188] In some embodiments, the vertical distance between the first end of the light-absorbing surface 9231 (the end close to the optical fiber adapter 700) and the horizontal plane may be less than the vertical distance between the second end of the light-absorbing surface 9231 (the end far from the optical fiber adapter 700) and the horizontal plane, so that the first end of the light-absorbing surface 9231 is inclined downward relative to the horizontal plane, and further the light-absorbing surface 9231 faces the optical fiber adapter 700, thereby facilitating the absorption of the second reflected light reflected by the end face of the optical fiber of the optical fiber ferrule 704. Exemplarily, the vertical distance between the first end of the light-absorbing surface 9231 and the bottom surface of the first light-absorbing member 923 may be less than the vertical distance between the second end of the light-absorbing surface 9231 and the bottom surface of the first light-absorbing member 923.

[0189] As Figure 18 shown, a is a vertical plane, b is the normal of the light-absorbing surface 9231, c is the normal of the end face of the optical fiber, x is the sum of the first preset angle and the second preset angle, y is the fourth preset angle, and z is the fifth preset angle between the reflected ray of the second reflected light and the vertical plane. In the limit case, when the reflected light of the second reflected light hits the edge of the first light-passing hole 951 of the light-blocking member 950, z is 24°. Therefore, in some embodiments, z is less than 24°, so that the light-blocking member 950 can block the reflected light after the second reflected light is reflected by the first light-absorbing member 923, that is, the second crosstalk light.

[0190] As Figure 18 shown, 2x + y + y + z = 90°, z is less than 24°, then x + y > 33°, where x is α + β.

[0191] Since x is the sum of the first preset angle and the second preset angle, the first preset relationship among the first preset angle, the second preset angle, and the third preset angle is: α + β + y > 33°.

[0192] As Figure 18 shown, in some embodiments, the first light-absorbing member 923 may include a stop surface 9232. The stop surface 9232 is farther from the optical fiber adapter 700 than other surfaces of the first light-absorbing member 923. One end of the stop surface 9232 may be connected to the light-absorbing surface 9231. The other end of the stop surface 9232 may be connected to the bottom surface of the first light-absorbing member 923.

[0193] Figure 19 is a cross-sectional view of a tube body provided according to some embodiments. Figure 20 is a cross-sectional view of the tube body provided according to some embodiments from another perspective. Figure 21 is a cross-sectional view of the tube body and the optical component provided according to some embodiments. As Figure 19 , Figure 20 and Figure 21As shown, in some embodiments, the tube body 910 may have a first storage through-hole 901. The first storage through-hole 901 may communicate with the first pipe orifice of the tube body main body 911, so that the emitted light emitted by the light emitting component 400 enters the tube body main body 911 through the first pipe orifice. Exemplarily, the first adjusting sleeve 912 of the tube body 910 has the first storage through-hole 901.

[0194] As Figure 19 , Figure 20 and Figure 21 As shown, in some embodiments, the tube body 910 may have a second storage through-hole 907. One end of the second storage through-hole 907 may be connected to the first storage through-hole 901, so that the second storage through-hole 907 communicates with the first storage through-hole 901, and further enables the emitted light emitted by the light emitting component 400 to enter the tube body main body 911 through the second storage through-hole 907. Exemplarily, the second storage through-hole 907 is the first pipe orifice of the tube body main body 911, and the first pipe orifice communicates with the second storage through-hole 907.

[0195] In some embodiments, the size of the second storage through-hole 907 is smaller than the size of the first storage through-hole 901, so as to facilitate the light emitting component 400 to stop before the second storage through-hole 907.

[0196] As Figure 19 , Figure 20 and Figure 21 As shown, in some embodiments, the tube body 910 may be provided with a first isolator 922 in the second storage through-hole 907. The first isolator 922 may be fixed in the second storage through-hole 907 by glue, so that the first isolator 922 is fixedly connected to the second storage through-hole 907.

[0197] As Figure 19 , Figure 20 and Figure 21 As shown, in some embodiments, the tube body 910 may have a second light passing hole 906. One end of the second light passing hole 906 may be connected to the other end of the second storage through-hole 907, so that the second light passing hole 906 communicates with the second storage through-hole 907, and further enables the first storage through-hole 901, the second storage through-hole 907 and the second light passing hole 906 to communicate with each other. The emitted light emitted by the light emitting component 400 enters the second light passing hole 906 through the first isolator 922.

[0198] In some embodiments, the size of the second light passing hole 906 is smaller than the size of the second storage through-hole 907, so as to facilitate the first isolator 922 to stop before the second light passing hole 906.

[0199] As Figure 19 , Figure 20 and Figure 21As shown, in some embodiments, the other end of the second light-passing hole 906 may be a first support surface 905. The first support surface 905 faces the second pipe orifice 902 and the third pipe orifice 903, so that the second light-passing hole 906 communicates with the second pipe orifice 902 or the third pipe orifice 903.

[0200] As Figure 19 , Figure 20 and Figure 21 As shown, in some embodiments, a filter 921 may be disposed on the first support surface 905, that is, the bottom surface of the filter 921 is in contact connection with the first support surface 905, so that the optical signal in the second light-passing hole 906 passes through the filter 921.

[0201] In some embodiments, the fifth preset angle between the first support surface 905 and the horizontal plane is non-0°, so that the first support surface 905 is inclined. For example, the fifth preset angle is 45°, and the first support surface 905 is inclined at 45° along the horizontal plane.

[0202] As Figure 19 , Figure 20 and Figure 21 As shown, in some embodiments, the pipe body 910 may have a second support surface 909. The second support surface 909 may be horizontally disposed. The second support surface 909 may be located between the first support surface 905 and the fiber optic adapter 700. A first light-absorbing member 923 may be placed on the second support surface 909.

[0203] As Figure 19 , Figure 20 and Figure 21 As shown, the bottom surface of the first light-absorbing member 923 may be in contact connection with the second support surface 909, so that the second support surface 909 supports the first light-absorbing member 923.

[0204] As Figure 19 , Figure 20 and Figure 21 As shown, in some embodiments, the pipe body 910 may have a connecting plate 991. The connecting plate 991 may be located between the first support surface 905 and the second support surface 909 to separate the first support surface 905 and the second support surface 909.

[0205] In some embodiments, the connecting plate 991 may include a first connecting surface 9911. One end of the first connecting surface 9911 may be connected to the first support surface 905. The first connecting surface 9911 may be in contact connection with one end face of the filter 921 to carry the filter 921, thereby defining the position of the filter 921 in the pipe 910.

[0206] In some embodiments, the angle between the bottom surface of the filter 921 and one end face of the filter 921 may be equal to the angle between the first support surface 905 and the first connection surface 9911, so as to increase the contact area between the filter 921 and the tube body 910, and further improve the connection stability between the filter 921 and the tube body 910. Exemplarily, the bottom surface of the filter 921 and one end face of the filter 921 are perpendicular to each other, and the first support surface 905 and the first connection surface 9911 may be perpendicular to each other.

[0207] In some embodiments, the connecting plate 991 may include a second connection surface 9912. One end of the second connection surface 9912 may be connected to the other end of the first connection surface 9911. The other end of the second connection surface 9912 may be connected to the second support surface 909. The second connection surface 9912 may be in contact connection with one end face of the first light absorbing member 923, so that the first light absorbing member 923 is stopped before the connecting plate 991, and further limit the position of the first light absorbing member 923 in the tube body 910. Exemplarily, the stopping surface 9232 of the first light absorbing member 923 may be connected to the second connection surface 9912 of the connecting plate 991, so that the first light absorbing member 923 is stopped before the connecting plate 991.

[0208] In some embodiments, the angle between the bottom surface of the first light absorbing member 923 and the stopping surface 9232 of the first light absorbing member 923 may be equal to the angle between the second connection surface 9912 and the second support surface 909, so as to increase the contact area between the first light absorbing member 923 and the tube body 910, and further improve the connection stability between the first light absorbing member 923 and the tube body 910. Exemplarily, the bottom surface of the first light absorbing member 923 and the stopping surface 9232 of the first light absorbing member 923 are perpendicular to each other, and the second connection surface 9912 and the second support surface 909 may be perpendicular to each other.

[0209] In some embodiments, the angle between the first connection surface 9911 and the second connection surface 9912 may be equal to the angle between the first support surface 905 and the horizontal plane. Exemplarily, the angle between the first support surface 905 and the horizontal plane is 45°, and the angle between the first connection surface 9911 and the second connection surface 9912 may be 45°.

[0210] As Figure 19 、 Figure 20 and Figure 21 shown, in some embodiments, the tube body 910 may have a third light passing hole 908. The third light passing hole 908 may be located below the second light passing hole 906. The third light passing hole 908 may be disposed opposite to the first support surface 905. The third light passing hole 908 may be communicated with the second light passing hole 906. The third light passing hole 908 may be communicated with an extinction cavity (which may include a fourth pipe orifice 904).

[0211] The third light-passing aperture 908 can communicate with the second light-passing aperture 906 and the extinction cavity (which may include the fourth pipe orifice 904), so that the first crosstalk light in the second light-passing aperture 906 can be transmitted to the extinction cavity (which may include the fourth pipe orifice 904) through the third light-passing aperture 908.

[0212] In some embodiments, a light-shielding cover can be disposed on the inner wall of the extinction cavity (which may include the fourth pipe orifice 904). The light-shielding cover can include a light-blocking ring. The light-blocking ring can be used to reduce the first crosstalk light. The presence of the light-blocking ring reduces the distance for the first crosstalk light to make a round trip reflection on the inner wall of the light-blocking ring, increases the number of reflections, increases the light loss, and thus reduces the first crosstalk light.

[0213] In some embodiments, an absorptive layer can be disposed on the inner wall of the extinction cavity (which may include the fourth pipe orifice 904). The absorptive layer can be used to absorb the first crosstalk light.

[0214] In some embodiments, the inner wall of the extinction cavity (which may include the fourth pipe orifice 904) can be recessed inward to form a groove. The groove can increase the roughness of the inner wall of the extinction cavity (which may include the fourth pipe orifice 904) and reduce the reflectivity of the inner wall of the extinction cavity (which may include the fourth pipe orifice 904), thereby reducing the reflection of the first crosstalk light.

[0215] In some embodiments, a light extinction member is attached to the inner wall of the extinction cavity. The light extinction member can reduce the first crosstalk light incident into the extinction cavity.

[0216] In order to reduce the first crosstalk light transmitted to the extinction cavity (which may include the fourth pipe orifice 904) from returning to the second light-passing aperture 906 through the third light-passing aperture 908, in some embodiments, an isolation member 924 can be disposed in the third light-passing aperture 908.

[0217] When the isolation member 924 placed in the third light-passing aperture 908 is as Figure 17 shown, from the second light-passing aperture 906 to the extinction cavity (which may include the fourth pipe orifice 904), the size of the third light-passing aperture 908 decreases.

[0218] When the isolation member 924 placed in the third light-passing aperture 908 is an isolator, from the second light-passing aperture 906 to the extinction cavity (which may include the fourth pipe orifice 904), the size of the third light-passing aperture 908 remains unchanged.

[0219] Since the extinction cavity is open to the outside to form the fourth pipe orifice 904, in order to ensure the sealing performance of the optical transceiver component 900, in some embodiments, a support plate may be placed inside the fourth pipe orifice 904. The outer sidewall of the support plate is in contact connection with the inner sidewall of the fourth pipe orifice 904, so that the support plate seals the fourth pipe orifice 904, thereby ensuring the sealing performance of the optical transceiver component 900. A third support surface may be provided on the support plate. An extinction member may be provided on the third support surface. Exemplarily, a first extinction member 925 may be provided on the third support surface.

[0220] In some embodiments, the material of the support plate may be metal. Exemplarily, when the material of the support plate is metal, the first extinction member 925 on the support plate may be a light-absorbing member.

[0221] In some embodiments, the material of the support plate may be transparent glass. Exemplarily, when the material of the support plate is transparent glass, the first extinction member 925 on the support plate may be a light-transmitting member.

[0222] In some embodiments, the third support surface of the support plate may be an inclined surface to reduce the first crosstalk light incident on the first extinction member 925 from returning along the original path.

[0223] To ensure the sealing performance of the optical transceiver component 900, as Figure 19 , Figure 20 and Figure 21 shown, in some embodiments, the inner wall of the fourth pipe orifice 904 may include a sixth light-passing hole 942. The size of the first extinction member 925 may be larger than the size of the sixth light-passing hole 942. The first extinction member 925 may be mounted on one end face of the sixth light-passing hole 942, so that the first extinction member 925 seals the sixth light-passing hole 942, thereby ensuring the sealing performance of the optical transceiver component 900.

[0224] One end face of the sixth light-passing hole 942 may be the first mounting face 941 of the inner wall of the fourth pipe orifice 904, that is, the first extinction member 925 may be mounted on the first mounting face 941.

[0225] The inner wall of the fourth pipe orifice 904 may further include other mounting faces. In some embodiments, the other mounting face may include a second mounting face 9421. The second mounting face 9421 may serve as the other end face of the sixth light-passing hole 942. The second mounting face 9421 may serve as one end face of the third light-passing hole 908. The other end face of the sixth light-passing hole 942 may be the second mounting face 9421, and the second mounting face 9421 may also be one end face of the third light-passing hole 908, so that the third light-passing hole 908 and the sixth light-passing hole 942 are connected and communicated.

[0226] In some embodiments, the size of the sixth light passage hole 942 is larger than that of the third light passage hole 908, facilitating the first crosstalk light to enter the sixth light passage hole 942 from the third light passage hole 908 and reducing the return of the first crosstalk light in the sixth light passage hole 942 to the third light passage hole 908.

[0227] In some embodiments, the first mounting surface 941 can be an inclined surface to reduce the return of the first crosstalk light incident on the first extinction member 925 along the original path.

[0228] In some embodiments, the other mounting surface can include a third mounting surface 9422. One end of the third mounting surface 9422 can be connected to the second mounting surface 9421. The other end of the second mounting surface 9421 can be connected to the first mounting surface 941.

[0229] As Figure 19 、 Figure 20 and Figure 21 shown, one side of the second extinction member 926 can be in contact connection with the second mounting surface 9421. The other side of the second extinction member 926 can be in contact connection with the third mounting surface 9422. The extinction surface of the second extinction member 926 is disposed opposite to the first extinction member 925 to receive the first crosstalk light reflected by the first extinction member 925. Exemplarily, the reflecting surface of the reflecting sheet is disposed opposite to the first extinction member 925 so that the reflecting surface receives the first crosstalk light reflected by the first extinction member 925 and also reflects the first crosstalk light incident on the reflecting surface to the first extinction member 925.

[0230] Figure 22 is a cross-sectional view of an optical transceiver component and an optical fiber adapter provided according to some embodiments. Figure 23 is an optical path diagram of an optical transceiver component provided according to some embodiments. As Figure 22 and Figure 23 shown, in some embodiments, after the emitted light emitted by the optical transmitting component 400 passes through the first isolator 922, before part of the emitted light passes through the filter 921 and enters the optical fiber ferrule 704, most of the emitted light enters the interior of the optical fiber ferrule 704 through the optical fiber end face of the optical fiber ferrule 704 and is transmitted along the optical fiber 101 connected to the optical fiber ferrule 704. When an abnormality occurs in the optical fiber 101, the emitted light transmitted in the optical fiber 101 is reflected in the optical fiber 101 to form a first reflected light. The first reflected light returns to the optical fiber end face of the optical fiber ferrule 704. The first reflected light horizontally enters the filter 921 in the tube body 910 through the optical fiber end face. Part of the first reflected light is transmitted through the filter 921, and part of the first reflected light is reflected by the filter 921 to the first light passage hole 951 of the light blocking member 950 to be received by the optical receiving component 500.

[0231] After the emitted light emitted by the light emitting component 400 passes through the first isolator 922, before a part of the emitted light passes through the filter 921 and enters the fiber ferrule 704, a small part of the emitted light is reflected by the fiber end face of the fiber ferrule 704 to form a second reflected light. The second reflected light enters the first light absorbing member 923, a part of the second reflected light is absorbed by the first light absorbing member 923, and a part of the second reflected light is reflected by the first light absorbing member 923 and then enters the region of the light blocking member 950 other than the first light passing hole 951.

[0232] After the emitted light emitted by the light emitting component 400 passes through the first isolator 922, a part of the emitted light is reflected by the filter 921 and then passes through the isolation member 924 and enters the fourth nozzle 904, and is absorbed by the extinction member in the fourth nozzle 904 or transmitted out of the tube body 910.

[0233] In some embodiments, the tube body has an extinction cavity, and a light passing hole is provided at the connection between the extinction cavity and the inner cavity of the tube body so that the extinction cavity is communicated with the inner cavity of the tube body, thereby transmitting the first crosstalk light in the inner cavity of the tube body to the extinction cavity. The extinction cavity is disposed opposite to the light receiving component so that the first crosstalk light is transmitted in the opposite direction of the light receiving component, further reducing the incidence of the first crosstalk light on the light receiving component. In order to further reduce the return of the first crosstalk light from the extinction inner cavity to the inner cavity of the tube body, an extinction member is attached to the inner wall of the extinction inner cavity. The extinction member is used to reduce the crosstalk light incident thereon. In order to further reduce the return of the first crosstalk light from the extinction inner cavity to the inner cavity of the tube body, an isolation member is provided at the light passing hole, and the isolation member is used to reduce the first crosstalk light returning from the extinction cavity to the inner cavity of the tube body. The isolation member and the extinction member cooperate with each other to reduce the influence of the first crosstalk light on the first reflected light, thereby improving the accuracy of the detection result and thus improving the OTDR function of the optical module.

[0234] In some embodiments, a first light absorbing member is disposed in the tube body. The first light absorbing member is located on the outgoing light path of the second reflected light to absorb the second reflected light. However, a part of the second reflected light may be reflected by the first light absorbing member. Therefore, a light blocking member is disposed outside the first lens of the light receiving component to block the second crosstalk light from entering the light receiving component. However, in order to enable the light receiving component to receive the first reflected light, the light blocking member has a first light passing hole. The first light passing hole is located on the reflected light path after the first reflected light is reflected by the filter to allow the first reflected light to enter the light receiving component. In order to reduce the incidence of the second crosstalk light on the light receiving component through the first light passing hole, the first light absorbing member is inclined. The first light absorbing member is inclined so that the second crosstalk light formed by the reflection of the second reflected light on the first light absorbing member enters the region of the light blocking member other than the first light passing hole, thereby further reducing the incidence of the second crosstalk light on the light receiving component. The light blocking member and the first light absorbing member cooperate with each other to reduce the influence of the second crosstalk light on the first reflected light, thereby improving the accuracy of the detection result and thus improving the OTDR function of the optical module.

[0235] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. An optical module, characterized in that: include: Fiber Optic Adapters, An optical transceiver component connected to the optical fiber adapter; wherein the optical transceiver component includes: The tube body has a light-extinction cavity; the light-extinction cavity is connected with the inner cavity of the tube body through a light-through hole; A light emitting component, arranged opposite to the optical fiber adapter and connected to the tube body, for emitting emission light; A light receiving component, arranged opposite to the extinction cavity and connected to the tube body, for receiving the first reflected light; the emitted light is incident on the optical fiber through the optical fiber adapter and is reflected in the optical fiber to form the first reflected light; An optical component is placed in the tube body; the optical component includes: A filter, located in the inner cavity of the tube body, between the light emitting component and the optical fiber adapter, used for reflecting and transmitting the emitted light, and located between the light receiving component and the optical fiber adapter, used for reflecting and transmitting the first reflected light; An isolator, located at the light-through hole, located on the reflected light path of the emitted light reflected by the filter, and used to reduce the crosstalk light returned from the extinction cavity to the inner cavity of the tube body; The extinction element is mounted on the inner wall of the extinction cavity and is used to reduce the crosstalk light incident on the extinction element, wherein the crosstalk light includes the reflected light formed after the emitted light is reflected at the filter.

2. The optical module according to claim 1, characterized in that: The matting cavity has a first mounting surface, and the matting element includes a first matting element mounted on the first mounting surface, and the first matting element is used to reduce crosstalk light incident on the first matting element.

3. The optical module according to claim 2, characterized in that: The matting piece further includes a second matting piece, and the matting cavity further includes a second mounting surface and a third mounting surface, the second mounting surface is arranged opposite to the first mounting surface, the second mounting surface serves as the other end surface of the light-through hole, and the first mounting surface and the second mounting surface are connected via the third mounting surface; One surface of the second matting piece is connected to the second mounting surface, the other surface of the second matting piece is connected to the third mounting surface, and the matting surface of the second matting piece is arranged opposite to the first matting piece.

4. The optical module according to claim 3, characterized in that: The second matte piece is a reflective sheet, and a reflective surface of the reflective sheet is arranged opposite to the first matte piece to receive the crosstalk light reflected by the first matte piece to the reflective surface, and reflect the crosstalk light incident to the reflective surface to the first matte piece.

5. The optical module according to claim 1, characterized in that: The isolating member includes a first isolating portion and a second isolating portion, the first isolating portion is connected to the second isolating portion, a light-through hole formed by the first isolating portion is connected to a light-through hole formed by the second isolating portion, a size of the light-through hole formed by the first isolating portion is smaller than a size of the light-through hole formed by the second isolating portion, and the first isolating portion is closer to the extinction cavity than the second isolating portion; From the extinction cavity to the cavity of the tube body, the size of the light-through hole increases from small to large.

6. The optical module according to claim 1, characterized in that: The isolator is an isolator, and the isolator is used to block the crosstalk light in the extinction cavity from returning to the inner cavity of the tube body; From the extinction cavity to the cavity of the tube body, the size of the light-through hole remains unchanged.

7. The optical module according to claim 2, characterized in that: The first light-extinguishing member is a light-transmitting member, and the light-extinguishing cavity is a pipe opening, so that the crosstalk light incident on the light-transmitting member can be transmitted out.

8. An optical module, characterized in that: include: Fiber Optic Adapters, An optical transceiver component connected to the optical fiber adapter; wherein the optical transceiver component includes: The tube body has a light extinction cavity; the light extinction cavity is connected with the inner cavity of the tube body through a light through hole; the inner wall of the light extinction cavity is provided with a light absorbing layer, and the light absorbing layer is used to absorb the crosstalk light incident on the inner wall of the light extinction cavity; A light emitting component, arranged opposite to the optical fiber adapter and connected to the tube body, for emitting emission light; A light receiving component, arranged opposite to the extinction cavity and connected to the tube body, for receiving the first reflected light; the emitted light is incident on the optical fiber through the optical fiber adapter and is reflected in the optical fiber to form the first reflected light; An optical component is placed in the tube body; the optical component includes: A filter, located in the inner cavity of the tube body, between the light emitting component and the optical fiber adapter, used for reflecting and transmitting the emitted light, and located between the light receiving component and the optical fiber adapter, used for reflecting and transmitting the first reflected light; An isolator, located at the light-through hole, located on the reflected light path of the emitted light reflected by the filter, and used to reduce the crosstalk light returned from the extinction cavity to the inner cavity of the tube body; The matte element is mounted on the inner wall of the matte cavity and is used to reduce the crosstalk light incident on the matte element, wherein the crosstalk light includes the reflected light formed after the reflected light is reflected by the filter.

9. The optical module according to claim 8, characterized in that: The isolator is an isolator, and the isolator is used to block the crosstalk light in the extinction cavity from returning to the inner cavity of the tube body; From the extinction cavity to the cavity of the tube body, the size of the light-through hole remains unchanged.

10. The optical module according to claim 8, characterized in that: The extinction element comprises a first extinction element, which is a light-transmitting element. The extinction cavity is a pipe opening, so that the crosstalk light incident on the light-transmitting element can be transmitted out.

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