Optical module

Abstract

The optical module (200) provided by the present disclosure comprises: a circuit board (300) in which a mounting hole (302) is formed; the light emitting component (400) is embedded in the mounting hole (302); the light emitting component (400) comprises: an emitting base (410) embedded in the connection mounting hole (302); the light emitting assembly is arranged on the emitting base (410), the light emitting assembly is in routing connection with the surface of the circuit board (300) and used for generating 2N paths of light signals, and N is larger than or equal to 1; the collimating lens group (440) is positioned on an output light path of the light emitting component; the first light receiving component (510) is arranged on the circuit board (300) and is used for receiving N paths of light signals; the first light receiving part (510) is connected with the surface of the circuit board (300); the second light receiving component (520) is arranged on the circuit board (300) and is used for receiving N paths of light signals; the second light receiving part (520) is connected with the surface of the circuit board (300); the second optical fiber (721) is connected with the first light receiving component (510), and the second optical fiber (721) penetrates through the side edge of the transmitting base (410); and the third optical fiber (731) is connected with the second light receiving component (520) and penetrates through the side edge of the transmitting base (410).

Description

optical modules

[0001] This application claims the priority of application number 2023107984710 filed with the China Patent Office on June 30, 2023; the priority of application number 2023217082766 filed with the China Patent Office on June 30, 2023; the priority of application number 202323147129.9 filed with the China Patent Office on November 21, 2023; the priority of application number 2024108430980 filed with the China Patent Office on June 27, 2024; the priority of application number 2023217082766 filed with the China Patent Office on June 30, 2023; the priority of application number 202323147129.9 filed with the China Patent Office on November 21, 2023; The priority of application No. 2024108430389 is filed on June 27, 2024, and the priority of application No. 202410843043X is filed on June 27, 2024 with the China Patent Office; the priority of application No. 2024214874081 is filed on June 27, 2024 with the China Patent Office; the priority of application No. 2024214875370 is filed on June 27, 2024; the priority of application No. 202421488349X is filed on June 27, 2024 with the China Patent Office; all the contents of which are incorporated by reference into this application. Technical Field

[0002] The present disclosure relates to the field of optical fiber communication technology, and in particular to an optical module. Background Art

[0003] Optical communication technology is used in new services and application models such as cloud computing, mobile Internet, and video. In optical communication technology, optical modules are devices that realize the conversion of optical and electrical signals and are one of the key components in optical communication equipment.

[0004] With the development of optical communication technology, the transmission rate of optical modules continues to increase, especially in recent years, with the gradual introduction of 800G optical modules to the market. To achieve the transmission rate of 800G optical modules, it is necessary to integrate 8 optical transmitters and 8 optical receivers in a QSFP-DD or OSFP package. Achieving the required functions in such a confined space poses a huge challenge in terms of high-frequency performance, optical performance, heat dissipation characteristics, structural complexity, and manufacturability.

[0005] Summary of the Invention

[0006] The present disclosure provides an optical module, comprising: a circuit board, an optical emitting component, a first optical receiving component, a second optical receiving component and an optical transmission component. A mounting hole is formed on the circuit board. The optical emitting component comprises a transmitting base, an optical emitting component and a collimating lens group. The transmitting base is embedded with a connection mounting hole. The optical emitting component is arranged on the transmitting base, and the optical emitting component is wired to connect to the surface of the circuit board to generate 2N optical signals, where N≥1. The collimating lens group is arranged on the transmitting base and is located on the output optical path of the optical emitting component. The first optical receiving component is arranged on the circuit board to receive N optical signals; the first optical receiving component is connected to the surface of the circuit board. The second optical receiving component is arranged on the circuit board to receive N optical signals; the first optical receiving component is connected to the surface of the circuit board; the optical transmission component comprises a second optical fiber and a third optical fiber. The second optical fiber is connected to the first optical receiving component, and the second optical fiber passes through the side of the transmitting base. The third optical fiber is connected to the second optical receiving component, and the second optical fiber passes through the side of the transmitting base. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] To more clearly illustrate the technical solutions of the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can also derive other drawings based on these drawings. Furthermore, the drawings described below are schematic diagrams and are not intended to limit the actual dimensions of the products, actual processes of the methods, actual timing of signals, etc. involved in the embodiments of the present disclosure.

[0008] FIG1 is a partial structural diagram of an optical communication system provided according to some embodiments of the present disclosure;

[0009] FIG2 is a partial structural diagram of a host computer provided according to some embodiments of the present disclosure;

[0010] FIG3 is a structural diagram of an optical module provided according to some embodiments of the present disclosure;

[0011] FIG4 is an exploded view of an optical module according to some embodiments of the present disclosure;

[0012] FIG5 is a schematic diagram of the internal structure of an optical module according to some embodiments of the present disclosure;

[0013] FIG6 is a schematic diagram of the internal structure of another optical module provided according to some embodiments of the present disclosure;

[0014] FIG7 is a first schematic diagram of the internal structure of another optical module provided according to some embodiments of the present disclosure;

[0015] FIG8 is a second schematic diagram of the internal structure of another optical module provided according to some embodiments of the present disclosure;

[0016] FIG9 is an exploded schematic diagram of a light emitting component according to some embodiments of the present disclosure;

[0017] FIG10 is a partial schematic diagram of a light emitting component provided according to some embodiments of the present disclosure;

[0018] FIG11 is a schematic structural diagram of a launch base provided according to some embodiments of the present disclosure;

[0019] FIG12 is a cross-sectional view of a light emitting component and a circuit board according to some embodiments of the present disclosure;

[0020] FIG13 is an exploded schematic diagram of another light emitting component provided according to some embodiments of the present disclosure;

[0021] FIG14 is a partial schematic diagram of another light emitting component provided according to some embodiments of the present disclosure;

[0022] FIG15 is a schematic diagram of the structure of a launch cover provided according to some embodiments of the present disclosure;

[0023] FIG16 is a diagram illustrating a launch cover in use according to some embodiments of the present disclosure;

[0024] FIG17 is a schematic structural diagram of another transmitting cover plate provided according to some embodiments of the present disclosure;

[0025] FIG18 is a schematic diagram of another launch cover in use according to some embodiments of the present disclosure;

[0026] FIG19 is a partial schematic diagram of another light emitting component provided according to some embodiments of the present disclosure;

[0027] FIG20 is a schematic diagram of assembling another light emitting component and a circuit board according to some embodiments of the present disclosure;

[0028] FIG21 is a schematic structural diagram of another transmitting base provided according to some embodiments of the present disclosure;

[0029] FIG22 is a schematic structural diagram of a third optical fiber fixing head provided according to some embodiments of the present disclosure;

[0030] FIG23 is a cross-sectional view of a third optical fiber fixing head according to some embodiments of the present disclosure;

[0031] FIG24 is a cross-sectional view of another light emitting component and a circuit board according to some embodiments of the present disclosure;

[0032] FIG25 is a schematic structural diagram of another transmitting cover plate provided according to some embodiments of the present disclosure;

[0033] FIG26 is a diagram illustrating another launch cover in use according to some embodiments of the present disclosure;

[0034] FIG27 is a partial schematic diagram of another transmitting component provided according to some embodiments of the present disclosure;

[0035] FIG28 is a schematic diagram of the assembly of another transmitting component and a circuit board according to some embodiments of the present disclosure;

[0036] FIG29 is a schematic structural diagram of another transmitting base provided according to some embodiments of the present disclosure;

[0037] FIG30 is a cross-sectional view of another light emitting component and a circuit board according to some embodiments of the present disclosure;

[0038] FIG31 is a schematic structural diagram of another transmitting cover plate provided according to some embodiments of the present disclosure;

[0039] FIG32 is a diagram illustrating another launch cover in use according to some embodiments of the present disclosure;

[0040] FIG33 is a partially exploded schematic diagram of a first light receiving component provided according to some embodiments of the present disclosure;

[0041] FIG34 is a schematic diagram of a partial structure of a first light receiving component provided according to some embodiments of the present disclosure;

[0042] FIG35 is a schematic structural diagram of a receiving housing according to some embodiments of the present disclosure;

[0043] FIG36 is a cross-sectional view of a light receiving component and a circuit board according to some embodiments of the present disclosure;

[0044] FIG37 is an exploded schematic diagram of another first light receiving component provided according to some embodiments of the present disclosure;

[0045] FIG38 is a schematic structural diagram of a receiving fixed head provided according to some embodiments of the present disclosure;

[0046] FIG39 is an exploded schematic diagram of a receiving fixing head provided according to some embodiments of the present disclosure;

[0047] FIG40 is a cross-sectional view of a receiving fixing head according to some embodiments of the present disclosure;

[0048] FIG41 is a schematic structural diagram of another receiving fixed head provided according to some embodiments of the present disclosure;

[0049] FIG42 is a partial schematic diagram 1 of a circuit board provided according to some embodiments of the present disclosure;

[0050] FIG43 is a second partial schematic diagram of a circuit board according to some embodiments of the present disclosure;

[0051] FIG44 is a partial schematic diagram of the interior of an optical module according to some embodiments of the present disclosure;

[0052] FIG45 is a first structural diagram of a fixing bracket according to some embodiments of the present disclosure;

[0053] FIG46 is a second structural diagram of a fixing bracket provided according to some embodiments of the present disclosure;

[0054] FIG47 is a schematic structural diagram of a gasket provided according to some embodiments of the present disclosure;

[0055] FIG48 is a diagram illustrating a fiber fixing bracket in use according to some embodiments of the present disclosure;

[0056] FIG49 is a schematic structural diagram of another optical fiber fixing bracket provided according to some embodiments of the present disclosure;

[0057] FIG50 is a schematic diagram of assembling another optical fiber fixing frame and a gasket according to some embodiments of the present disclosure;

[0058] FIG51 is a partial schematic diagram of a lower housing according to some embodiments of the present disclosure;

[0059] FIG52 is a diagram showing a lower housing in use according to some embodiments of the present disclosure;

[0060] FIG53 is a second diagram of a lower housing in use according to some embodiments of the present disclosure;

[0061] FIG54 is a schematic structural diagram of another optical fiber fixing bracket provided according to some embodiments of the present disclosure;

[0062] FIG55 is a schematic diagram illustrating the assembly of another optical fiber fixing bracket according to some embodiments of the present disclosure;

[0063] FIG56 is a first structural diagram of another optical fiber fixing component provided according to some embodiments of the present disclosure;

[0064] FIG57 is a second structural diagram of another optical fiber fixing component provided according to some embodiments of the present disclosure;

[0065] FIG58 is a first cross-sectional view of another optical fiber fixing component provided according to some embodiments of the present disclosure;

[0066] FIG59 is a second cross-sectional view of another optical fiber fixing component provided according to some embodiments of the present disclosure;

[0067] FIG60 is a partial schematic diagram of another optical fiber fixing component provided according to some embodiments of the present disclosure;

[0068] FIG61 is a partial schematic diagram of another lower housing provided according to some embodiments of the present disclosure;

[0069] FIG62 is an exploded schematic diagram of a partial structure of an optical module according to some embodiments of the present disclosure;

[0070] FIG63 is a cross-sectional view of an optical module according to some embodiments of the present disclosure;

[0071] FIG64 is a partial enlarged view of point A in FIG63;

[0072] FIG65 is a schematic diagram of a partial structure of another optical module provided according to some embodiments of the present disclosure;

[0073] FIG66 is a second schematic diagram of a partial structure of another optical module provided according to some embodiments of the present disclosure;

[0074] FIG67 is an exploded schematic diagram of a fifth fiber optic adapter according to some embodiments of the present disclosure;

[0075] FIG68 is a schematic structural diagram of a fixing member provided according to some embodiments of the present disclosure;

[0076] FIG69 is a schematic diagram of the structure of a pin provided according to some embodiments of the present disclosure;

[0077] FIG70 is an exploded schematic diagram of an upper housing and a lower housing according to some embodiments of the present disclosure;

[0078] FIG71 is a partial cross-sectional view of an optical module according to some embodiments of the present disclosure;

[0079] FIG72 is a partial schematic diagram of another optical module provided according to some embodiments of the present disclosure;

[0080] FIG73 is a schematic structural diagram of a wire harness according to some embodiments of the present disclosure;

[0081] FIG74 is a schematic diagram of an assembly of a wiring harness and a circuit board according to some embodiments of the present disclosure;

[0082] FIG75 is a schematic structural diagram of an upper housing according to some embodiments of the present disclosure;

[0083] FIG76 is an exploded schematic diagram of an upper housing according to some embodiments of the present disclosure;

[0084] Figure 77 is a schematic diagram of an exploded view of another upper shell provided according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0085] The following will be combined with the accompanying drawings to clearly and in detail describe the technical solutions in some embodiments of the present disclosure. Obviously, the embodiments described are only some of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present disclosure.

[0086] In optical communication technology, to establish information transmission between information processing devices, it is necessary to load the information onto light and use the propagation of light to achieve information transmission. Here, the light loaded with information is an optical signal. When transmitting optical signals within information transmission equipment, they can reduce optical power loss, thereby enabling high-speed, long-distance, and low-cost information transmission. The signals that information processing equipment can recognize and process are electrical signals. Information processing equipment typically includes optical network units (ONUs), gateways, routers, switches, mobile phones, computers, servers, tablets, televisions, etc., and information transmission equipment typically includes optical fibers and optical waveguides.

[0087] Optical modules can convert optical signals into electrical signals between information processing devices and information transmission devices. For example, at least one of the optical signal input or output ends of an optical module is connected to an optical fiber, and at least one of the electrical signal input or output ends of the optical module is connected to an optical network terminal. A first optical signal from the optical fiber is transmitted to the optical module, which converts the first optical signal into a first electrical signal and transmits the first electrical signal to the optical network terminal. A second electrical signal from the optical network terminal is transmitted to the optical module, which converts the second electrical signal into a second optical signal and transmits the second optical signal to the optical fiber. Because multiple information processing devices can transmit information via electrical signals, at least one of the multiple information processing devices needs to be directly connected to the optical module, rather than all of them. Here, the information processing device directly connected to the optical module is referred to as the optical module's host computer. Furthermore, the optical signal input or output end of the optical module can be referred to as an optical port, and the electrical signal input or output end of the optical module can be referred to as an electrical port.

[0088] Figure 1 is a partial structural diagram of an optical communication system provided according to some embodiments of the present disclosure. As shown in Figure 1, 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.

[0089] One end of optical fiber 101 extends toward remote information processing device 1000, and the other end of optical fiber 101 is connected to optical module 200 through the optical port of optical module 200. Optical signals can be totally reflected in optical fiber 101, and the propagation of the optical signal in the direction of total reflection can almost maintain the original optical power. The optical signal undergoes multiple total reflections in optical fiber 101 to transmit the optical signal from remote information processing device 1000 to optical module 200, and vice versa, thereby achieving long-distance, low-power information transmission.

[0090] The optical communication system may include one or more optical fibers 101, and the optical fibers 101 may be 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 operating status of the optical module 200.

[0091] 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 as to establish a unidirectional or bidirectional electrical signal connection between the host computer 100 and the optical module 200.

[0092] The host computer 100 also includes an external electrical interface that can access an electrical signal network. For example, the external electrical interface includes a Universal Serial Bus (USB) interface or a network cable interface 104. The network cable interface 104 is configured to access 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 that an electrical signal connection is established between the local information processing device 2000 and the host computer 100 via the network cable 103. For example, a third electrical signal emitted by the local information processing device 2000 is transmitted to the host computer 100 via the network cable 103. The host computer 100 generates a second electrical signal based on 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. The second optical signal is then transmitted to the remote information processing device 1000 via the optical fiber 101. For example, a first optical signal from the remote information processing device 1000 is transmitted 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 based on the first electrical signal and transmits the fourth electrical signal to the local information processing device 2000. It should be noted that optical modules are tools for converting optical signals into electrical signals. During this conversion process, the information does not change, but the encoding and decoding methods of the information can change.

[0093] In addition to the optical network terminal, the host computer 100 also includes an optical line terminal (OLT), an optical network device (ONT), or a data center server.

[0094] FIG2 is a partial structural diagram of a host computer provided according to some embodiments of the present disclosure. In order to clearly show the connection relationship between the optical module 200 and the host computer 100, FIG2 only shows the structure of the host computer 100 related to the optical module 200. As shown in FIG2, the host computer 100 also includes a PCB circuit board 105 disposed in the housing, a cage 106 disposed on the surface of the PCB circuit board 105, a heat sink 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 heat sink 107 has a protruding structure such as fins that increase the heat dissipation area.

[0095] The optical module 200 is inserted into the cage 106 of the host computer 100. The cage 106 secures the optical module 200. Heat generated by the optical module 200 is transferred to the cage 106 and then dissipated through the heat sink 107. After the optical module 200 is inserted into the cage 106, the electrical port of the optical module 200 connects with the electrical connector inside the cage 106, thereby establishing a bidirectional electrical signal connection between the optical module 200 and the host computer 100. Furthermore, the optical port of the optical module 200 connects to the optical fiber 101, thereby establishing a bidirectional optical signal connection between the optical module 200 and the optical fiber 101.

[0096] Figure 3 is a structural diagram of an optical module provided according to some embodiments of the present disclosure, and Figure 4 is an exploded view of an optical module provided according to some embodiments of the present disclosure. As shown in Figures 3 and 4, the optical module 200 includes a housing, a circuit board 300 disposed within the housing, a light emitting component 400, and a light receiving component 500. However, the present disclosure is not limited thereto. In some embodiments, the optical module 200 includes either the light emitting component 400 or the light receiving component 500.

[0097] The housing includes an upper housing 201 and a lower housing 202 . The upper housing 201 covers the lower housing 202 to form the housing having two openings 203 and 204 . The outer contour of the housing is generally a square.

[0098] In some embodiments, the lower shell 202 includes a base plate 2021 and two lower side plates 2022 located on both sides of the base plate 2021 and arranged perpendicular to the base plate 2021; the upper shell 201 includes an upper cover plate 2011, and the upper cover plate 2011 covers the two lower side plates 2022 of the lower shell 202 to form the above-mentioned shell.

[0099] In some embodiments, the lower shell 202 includes a base plate 2021 and two lower side plates 2022 located on both sides of the base plate 2021 and arranged perpendicularly to the base plate 2021; the upper shell 201 includes an upper cover plate 2011 and two upper side plates 2012 located on both sides of the upper cover plate 2011 and arranged perpendicularly to the upper cover plate 2011. The two upper side plates 2012 are combined with the two lower side plates 2022 to achieve the upper shell 201 covering the lower shell 202.

[0100] The direction of the line connecting the two openings 203 and 204 can be consistent with the length of the optical module 200, or it can be inconsistent with the length of the optical module 200. For example, opening 203 is located at the end of the optical module 200 (the left end in Figure 3), and opening 204 is located at the end of the optical module 200 (the right end in Figure 3). Alternatively, opening 203 is located at the end of the optical module 200, while opening 204 is located on the side of the optical module 200. Opening 203 is an electrical port, and the end of the circuit board 300 extends from opening 203 and is inserted into the electrical connector of the host computer 100. Opening 204 is an optical port, configured to connect to an external optical fiber 101, so that the optical fiber 101 connects the light emitting component 400 and the light receiving component 500 in the optical module 200.

[0101] The combined assembly of the upper and lower housings 201 and 202 facilitates the installation of the circuit board 300, the light-emitting component 400, the light-receiving component 500, and the like within the housing, which then provides encapsulation and protection for these components. Furthermore, when assembling the circuit board 300, the light-emitting component 400, the light-receiving component 500, and the like, the combined assembly of the upper and lower housings 201 and 202 facilitates the placement of positioning components, heat dissipation components, and electromagnetic shielding components for these components, facilitating automated production.

[0102] In some embodiments, the upper shell 201 and the lower shell 202 are made of metal materials, which facilitates electromagnetic shielding and heat dissipation.

[0103] 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 100, or to release the fixed connection between the optical module 200 and the host computer 100.

[0104] For example, the unlocking component 600 is located on the outside of the two lower side panels 2022 of the lower housing 202 and includes a snap-fit ​​component that mates with the cage 106 of the host computer 100. When the optical module 200 is inserted into the cage 106, the snap-fit ​​component of the unlocking component 600 secures the optical module 200 in the cage 106. When the unlocking component 600 is pulled, the snap-fit ​​component of the unlocking component 600 moves accordingly, thereby changing the connection between the snap-fit ​​component and the host computer, thereby releasing the optical module 200 from the cage 106 and allowing the optical module 200 to be removed from the cage 106.

[0105] 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. Electronic components can include capacitors, resistors, transistors, metal oxide semiconductor field effect transistors, etc.

[0106] Chips may include, for example, a microcontroller unit (MCU), a laser driver chip, a transimpedance amplifier (TIA), a limiting amplifier (LA), a clock and data recovery (CDR) chip, a power management chip, and a digital signal processing (DSP) chip.

[0107] The circuit board 300 is generally a rigid circuit board. Due to its relatively hard material, the rigid circuit board can also realize the load-bearing function. For example, the rigid circuit board can stably carry 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.

[0108] The circuit board 300 also includes a gold finger 301 formed on its end surface, and the gold finger 301 is composed of a plurality of independent pins. The circuit board 300 is inserted into the cage 106, and the gold finger 301 is connected to the electrical connector in the cage 106. The gold finger 301 can be set only on the surface of one side of the circuit board 300 (for example, the upper surface shown in Figure 4), or it can be set on the upper and lower surfaces of the circuit board 300 to provide a larger number of pins, thereby adapting to occasions where a large number of pins are required. The gold finger 301 is configured to establish an electrical connection with the host computer to achieve power supply, grounding, two-wire synchronous serial (Inter-Integrated Circuit, I2C) signal transmission, data signal transmission, etc. Of course, flexible circuit boards are also used in some optical modules. Flexible circuit boards are generally used in conjunction with rigid circuit boards to supplement rigid circuit boards.

[0109] The optical emitting component 400 is used to receive electrical signals transmitted by the circuit board 300, thereby generating optical signals. The optical receiving component 500 is used to receive optical signals input from the optical module and convert them into electrical signals. At least one of the optical emitting component 400 and the optical receiving component 500 is located on the side of the circuit board 300 away from the gold finger 301.

[0110] In some embodiments, the light emitting component 400 and the light receiving component 500 are physically separated from the circuit board 300 and then electrically connected to the circuit board 300 through corresponding flexible circuit boards or electrical connectors.

[0111] In some embodiments, at least one of the light emitting component 400 or the light receiving component 500 may be directly disposed on the circuit board 300. For example, at least one of the light emitting component 400 or the light receiving component 500 may be disposed on a surface of the circuit board 300 or a side of the circuit board 300.

[0112] In some embodiments, the optical module 200 also includes an optical transmission component 700, which is disposed in the housing. The optical transmission component 700 is used to establish an optical connection between the optical emitting component 400, the optical receiving component 500 and the external optical fiber 101 (hereinafter referred to as the external optical fiber), so that the optical signal generated by the optical emitting component 400 can be coupled to the external optical fiber, and the optical signal input from the external optical fiber can be coupled to the optical receiving component.

[0113] In some embodiments, the optical transmission component 700 includes a fiber optic adapter and an optical fiber. The optical fiber can also be referred to as an internal optical fiber relative to the external optical fiber. One end of the optical fiber is connected to the fiber optic adapter, and the other end of the optical fiber is connected to the optical emitting component 400 or the optical receiving component 500. Exemplarily, the optical transmission component 700 includes one or more fiber optic adapters, and the optical fiber includes multiple optical fibers. The optical emitting component 400 can be connected to one or more fiber optic adapters via one or more optical fibers, and the optical receiving component 500 can be connected to one or more fiber optic adapters via multiple optical fibers. In the embodiments of the present disclosure, the structural form of the optical fiber adapter is not limited to one type. For example, the optical fiber adapter can include an LC plug form or an MT plug form.

[0114] In some embodiments, to facilitate assembly and fixation of the optical fiber adapter in the optical module 200, the optical module 200 further includes an optical fiber fixing component 800. The optical fiber fixing component 800 is disposed in the optical port and fixedly connected to the optical fiber adapter to fix the optical fiber adapter at the optical port.

[0115] Figure 5 is a schematic diagram of the internal structure of an optical module provided according to some embodiments of the present disclosure. As shown in Figures 4 and 5, in some embodiments, a mounting hole 302 is provided on a circuit board 300, and a light emitting component 400 is assembled and connected to the mounting hole 302. For example, the light emitting component 400 is embedded in the mounting hole 302. In some embodiments, the mounting hole 302 is a through hole, so that the top of the light emitting component 400 is located above the mounting hole 302 and the bottom of the light emitting component 400 is located below the mounting hole 302.

[0116] In some embodiments, the central axis of the mounting hole 302 is close to the central axis of the circuit board 300 , that is, the mounting hole 302 is located close to the center of the circuit board 300 in the width direction.

[0117] In some embodiments, a DSP chip 303 is disposed on the front of the circuit board 300. The DSP chip 303 is used to transmit high-frequency signals, etc., to the optical emitting component 400. The optical emitting component 400 receives the high-frequency signals transmitted by the DSP chip 303 to generate optical signals. The two opposing surfaces of the circuit board 300 serve as the primary load-bearing surfaces of the circuit board 300. One of these surfaces, referred to as the front surface of the circuit board 300, faces the upper cover 2011; the other surface, referred to as the back surface of the circuit board 300, faces the bottom plate 2021. The front surface and back surface of the circuit board 300 are opposing surfaces.

[0118] In some embodiments, the optical receiving component 500 includes a first optical receiving component 510 and a second optical receiving component 520, which are disposed on the back of the circuit board 300. The first optical receiving component 510 and the second optical receiving component 520 are respectively used to receive external optical signals.

[0119] In some embodiments, the DSP chip 303 may be disposed on the back side of the circuit board 300 , and the first light receiving component 510 and the second light receiving component 520 may be disposed on the front side of the circuit board 300 .

[0120] In some embodiments, the first light receiving component 510 is disposed at an end of the light emitting component 400 close to the gold finger 301 , that is, the first light receiving component 510 is closer to the electrical port of the optical module than the light emitting component 400 . The first light receiving component 510 is disposed at an edge of the side of the circuit board 300 .

[0121] In some embodiments, the second light receiving component 520 is disposed at an end of the light emitting component 400 close to the gold finger 301 , that is, the second light receiving component 520 is closer to the electrical port of the optical module than the light emitting component 400 . The second light receiving component 520 is disposed at the edge of the side of the circuit board 300 .

[0122] In some embodiments, the first light receiving component 510 is located on one side of one end of the light emitting component 400, and the second light receiving component 520 is located on the other side of one end of the light emitting component 400. For example, the first light receiving component 510 is located on one edge of the circuit board 300, and the second light receiving component 520 is located on the other edge of the circuit board 300.

[0123] In some embodiments, the first light receiving component 510 is connected to the light emitting component 400; for example, the bottom of the light emitting component 400 supports the first light receiving component 510. The light emitting component 400 supports the first light receiving component 510, which not only reduces the space occupied by the first light receiving component 510 on the circuit board 300, but also facilitates the DSP chip 303 to be as close as possible to the light emitting component 400 and the first light receiving component 510, thereby minimizing the high-frequency signal transmission distance between the DSP chip 303 and the light emitting component 400 and the first light receiving component 510. For example, the bottom of the light emitting component 400 supports some components of the first light receiving component 510.

[0124] In some embodiments, the second light receiving component 520 is connected to the light emitting component 400; for example, the bottom of the light emitting component 400 supports the second light receiving component 520. The light emitting component 400 supports the second light receiving component 520, which not only reduces the space occupied by the second light receiving component 520 on the circuit board 300, but also facilitates placing the DSP chip 303 as close as possible to the light emitting component 400 and the second light receiving component 520, minimizing the high-frequency signal transmission distance between the DSP chip 303 and the light emitting component 400 and the second light receiving component 520. For example, the bottom of the light emitting component 400 supports some components of the second light receiving component 520.

[0125] In some embodiments, the first light receiving component 510 is disposed along the length direction of the circuit board 300 , and the second light receiving component 520 is disposed along the length direction of the circuit board 300 .

[0126] In some embodiments, the optical transmission assembly 700 includes a first transmission group 710, one end of which is connected to the optical fiber fixing component 800, and the other end of which is connected to the optical transmission component 400. For example, the first transmission group 710 includes a first optical fiber 711, the end of which is connected to the optical transmission component 400. The first optical fiber 711 may include one optical fiber or two optical fibers. In some embodiments, when the number of optical fibers in the first optical fiber 711 is greater than or equal to four, the first optical fiber 711 may be referred to as a first optical fiber ribbon.

[0127] In some embodiments, the optical transmission assembly 700 includes a second transmission group 720, one end of which is connected to the optical fiber fixing component 800, and the other end of which is connected to the first optical receiving component 510. Exemplarily, the second transmission group 720 includes a second optical fiber 721, the end of which is connected to the first optical receiving component 510. The second optical fiber 721 may include one optical fiber or multiple optical fibers. In some embodiments, when the number of optical fibers in the second optical fiber 721 is greater than or equal to four, the second optical fiber 721 may be referred to as a second optical fiber ribbon.

[0128] In some embodiments, the optical transmission assembly 700 includes a third transmission group 730, one end of which is connected to the optical fiber fixing component 800, and the other end of which is connected to the second optical receiving component 520. For example, the third transmission group 730 includes a third optical fiber 731, the end of which is connected to the second optical receiving component 520. The third optical fiber 731 may include one or more optical fibers. In some embodiments, when the number of optical fibers in the third optical fiber 731 is greater than or equal to four, the third optical fiber 731 may be referred to as a third optical fiber ribbon.

[0129] Figure 6 is a schematic diagram of the internal structure of another optical module provided according to some embodiments of the present disclosure. In some embodiments, as shown in Figure 6, the first light receiving component 510 is tilted so that it is not arranged along the length of the circuit board 300. For example, the end of the first light receiving component 510 for inputting light is closer to the side of the circuit board 300 than the other end of the first light receiving component 510. The tilt angle of the first light receiving component 510 is 8-10°.

[0130] In some embodiments, the second light receiving component 520 is tilted so that the second light receiving component 520 is not disposed along the length of the circuit board 300. For example, one end of the second light receiving component 520 for inputting light is closer to the side of the circuit board 300 than the other end of the second light receiving component 520. The tilt angle of the second light receiving component 520 is 8-10 degrees.

[0131] The first light receiving component 510 or the second light receiving component 520 is tiltedly arranged on the circuit board 300, which can reduce the space between the first light receiving component 510 and the second light receiving component 520 in the length direction of the circuit board 300, facilitate the control of the distance between the DSP chip 303 and the light emitting component 400, the first light receiving component 510, and the second light receiving component 520, so that the distance for transmitting high-frequency signals between the DSP chip 303 and the light emitting component 400, the first light receiving component 510, and the second light receiving component 520 is relatively short.

[0132] In some embodiments, the mounting hole 302 is disposed at an end portion of the circuit board 300 , and one end of the mounting hole 302 is open.

[0133] FIG7 is a schematic diagram of the internal structure of another optical module provided according to some embodiments of the present disclosure. FIG8 is a schematic diagram of the internal structure of another optical module provided according to some embodiments of the present disclosure. In some embodiments, as shown in FIG7 and FIG8 , the first light receiving component 510 is disposed on the front of the circuit board 300. Exemplarily, the first light receiving component 510 and the light emitting component 400 are disposed along the width direction of the circuit board 300, and the first light receiving component 510 is located on the side of the light emitting component 400. Of course, in the embodiment of the present disclosure, the first light receiving component 510 is not limited to being disposed on the side of the light emitting component 400, but may also be disposed at one end of the light emitting component 400.

[0134] In some embodiments, the second light receiving component 520 is disposed on the back side of the circuit board 300, and the second light receiving component 520 is located on the side of the bottom of the light emitting component 400. Exemplarily, the second light receiving component 520 is disposed in the projection area of ​​the first light receiving component 510 on the back side of the circuit board 300; for example, the second light receiving component 520 is symmetrical to the first light receiving component 510.

[0135] In some embodiments, the optical emitting component 400 is used to generate 2N optical signals, the first optical receiving component 510 is used to receive N optical signals, and the second optical receiving component 520 is used to receive N optical signals. Wherein, N ≥ 1, such as N = 4. When N = 4, the optical emitting component 400 is used to generate 8 optical signals, the first optical receiving component 510 is used to receive 4 optical signals, and the second optical receiving component 520 is used to receive 4 optical signals. In the optical module provided in this embodiment of the present disclosure, the optical emitting component 400 is centrally arranged and the optical receiving component 500 is separately arranged, so as to facilitate the use of the internal space of the optical module.

[0136] In some embodiments, the 2N optical signals generated by the optical emitting component 400 are coupled to an external optical fiber through two optical fibers. After the optical emitting component 400 generates 2N optical signals, N of the optical signals are combined into one beam of light, and the other N optical signals are combined into one beam of light. The two combined beams of light are then transmitted through two optical fibers.

[0137] In some embodiments, the 2N optical signals generated by the optical emitting component 400 are coupled to external optical fibers through 2N optical fibers. After the optical emitting component 400 generates the 2N optical signals, the 2N optical signals are transmitted through the 2N optical fibers.

[0138] In some embodiments, four optical signals are transmitted through one optical fiber (the four optical signals are combined into one beam) to the first optical receiving component 510. The first optical receiving component 510 first demultiplexes the light into four light beams, and then receives and converts them into electrical signals respectively.

[0139] In some embodiments, four optical signals are transmitted through one optical fiber (the four optical signals are combined into one beam) to the second optical receiving component 520. The second optical receiving component 520 first demultiplexes the light into four light beams, and then receives and converts them into electrical signals respectively.

[0140] In some embodiments, four optical signals are transmitted to the first optical receiving component 510 through four optical fibers, and the first optical receiving component 510 receives the four lights; the four optical signals are transmitted to the second optical receiving component 520 through four optical fibers, and the second optical receiving component 520 receives the four lights.

[0141] Figure 9 is an exploded schematic diagram of a light emitting component provided according to some embodiments of the present disclosure, and Figure 10 is a partial schematic diagram of a light emitting component provided according to some embodiments of the present disclosure. In some embodiments, as shown in Figures 9 and 10, the light emitting component 400 includes a emitting base 410 and a emitting cover 420. The emitting base 410 is connected to the mounting hole 302, the bottom of the emitting base 410 faces the bottom plate 2021, and the emitting cover 420 covers the emitting base 410 to form a emitting cavity.

[0142] In some embodiments, the light emitting component 400 includes a light emitting assembly 430, which is disposed on the transmitting base 410 and is used to generate an optical signal. The light emitting assembly 430 can be wired to the front of the circuit board 300, that is, the front of the light emitting assembly 430 can face the upper cover 2011.

[0143] In some embodiments, the light emitting assembly 430 may include multiple lasers 431, so that the light emitting assembly 430 can generate multiple light signals. Exemplarily, the light emitting assembly 430 includes 2N lasers 431, such as 4 lasers 431 or 8 lasers 431.

[0144] In some embodiments, the light emitting component 400 includes a collimating lens group 440 , which is disposed on the emitting base 410 and located in the output light path of the light emitting assembly 430 . The collimating lens group 440 is used to collimate the light signal generated by the light emitting assembly 430 .

[0145] In some embodiments, the collimating lens group 440 may include a plurality of collimating lenses 441, each of which is disposed on an output optical path of the laser 431 and configured to collimate the optical signal generated by the corresponding laser 431. For example, the collimating lens group 440 includes four collimating lenses 441 or eight collimating lenses 441.

[0146] In some embodiments, the light emitting component 400 may include a combiner group 450, which is disposed on the emitting base 410 and disposed in the output light path of the light emitting assembly 430. For example, a collimating lens group 440 is disposed in the light path between the combiner group 450 and the light emitting assembly 430, and the combiner group 450 is used to combine multiple collimated lights.

[0147] In some embodiments, the combiner group 450 includes multiple combiners, and one combiner is corresponding to combining the optical signals output by multiple lasers 431. Exemplarily, the right side of the combiner includes four optical input ports for inputting signal light of multiple wavelengths, each optical input port is used to input signal light of one wavelength; the left side of the combiner includes an optical output port for outputting light. Taking the four wavelengths λ1, λ2, λ3 and λ4 inputted into the combiner as an example, the λ1 signal light enters the combiner through the first optical input port, passes through six different positions in the combiner, undergoes six different reflections, and arrives at the optical output port; the λ2 signal light enters the combiner through the second optical input port, passes through four different positions in the combiner, undergoes four different reflections, and arrives at the optical output port; the λ3 signal light enters the combiner through the third optical input port, passes through two different positions in the combiner, undergoes two different reflections, and arrives at the optical output port; the λ4 signal light enters the combiner through the fourth optical input port and is directly transmitted to the optical output port. In this way, the combiner can realize that signal lights of different wavelengths are input through different optical input ports and output through the same optical output port, thereby realizing light combination of signal lights of different wavelengths.

[0148] In some embodiments, the combiner group 450 includes a first combiner 451 and a second combiner 452. The first combiner 451 and the second combiner 452 are arranged side by side on the transmitting base 410. The first combiner 451 corresponds to the optical signals output by the four lasers 431, and the second combiner 452 corresponds to the optical signals output by the four lasers 431.

[0149] In some embodiments, the light emitting component 400 may include a converging lens group 460, which is disposed on the emitting base 410 and located on the output optical path of the combiner group 450. For example, the converging lens group 460 includes a plurality of converging lenses.

[0150] In some embodiments, the converging lens group 460 includes a first converging lens 461 and a second converging lens 462 . The first converging lens 461 is located on the output optical path of the first combiner 451 , and the second converging lens 462 is located on the output optical path of the second combiner 452 .

[0151] In some embodiments, the optical transmission component 400 may include an optical fiber fixing assembly 470, which is used to connect to the optical transmission component 700 to facilitate coupling of the optical signal generated by the optical transmission component 400 to the optical transmission component 700. The optical fiber fixing assembly 470 includes an optical fiber fixing head, which connects the optical transmission component 700 and the transmitting base 410 to connect the optical transmission component 700 to the optical transmission component 400. Exemplarily, the optical fiber fixing head is connected to the end of the optical fiber in the optical transmission component 700 to facilitate protection of the end of the optical fiber and to facilitate fixed connection of the end of the optical fiber, so that the optical signal output by the optical transmission component 400 is coupled to the optical transmission component 700.

[0152] In some embodiments, the optical fiber fixing head in the optical fiber fixing assembly 470 can fix the ends of one or more optical fibers. For example, the optical fiber fixing head in the optical fiber fixing assembly 470 can fix the ends of two, four, or eight optical fibers.

[0153] In some embodiments, the optical fiber fixing assembly 470 includes a first optical fiber fixing head 471 and a second optical fiber fixing head 472. The first optical fiber fixing head 471 is connected to the other end of the first transmission group 710, and the second optical fiber fixing head 472 is connected to the other end of the first transmission group 710. For example, the first optical fiber fixing head 471 is connected to the first optical fiber 711a, and the second optical fiber fixing head 472 is connected to the first optical fiber 711b.

[0154] In some embodiments, the light input end of the first optical fiber fixing head 471 is optically connected to the first combiner 451, and the light input end of the second optical fiber fixing head 472 is optically connected to the second combiner 452. Exemplarily, a first converging lens 461 is disposed between the light input end of the first optical fiber fixing head 471 and the light output port of the first combiner 451, and a second converging lens 462 is disposed between the light input end of the second optical fiber fixing head 472 and the light output port of the second combiner 452.

[0155] In some embodiments, the light emitting component 400 may include a thermoelectric cooler (TEC) assembly 480. The TEC assembly 480 is disposed on the emitting base 410, and the top of the TEC assembly 480 supports the light emitting assembly 430. The TEC assembly 480 is used to adjust the temperature around the light emitting assembly 430.

[0156] In some embodiments, the collimating lens assembly 440 may be disposed on top of the TEC assembly 480. For example, the collimating lens assembly 440 further includes a support plate 442 disposed on top of the TEC assembly 480 to securely support the collimating lens 441.

[0157] In some embodiments, TEC assembly 480 includes TEC 481 and substrate 482. Substrate 482 is disposed on top of TEC 481 and fixedly supports light emitting assembly 430. Substrate 482 is used to facilitate connection between light emitting assembly 430 and TEC 481 and to adjust the height of the top of light emitting assembly 430.

[0158] In some embodiments, the TEC assembly 480 includes a TEC 481 , and the top of the TEC 481 is fixedly supported by the light emitting assembly 430 .

[0159] Figure 11 is a schematic diagram of the structure of a transmitting base provided according to some embodiments of the present disclosure, and Figure 12 is a cross-sectional view of an optical transmitting component and a circuit board provided according to some embodiments of the present disclosure. As shown in Figures 11 and 12, the transmitting base 410 includes a first mounting surface 411, which extends from the left side of the transmitting base 410 to the right side. When the transmitting base 410 is inserted into the mounting hole 302, the first mounting surface 411 is bonded to the back side of the circuit board 300. The side surface of the transmitting base 410 can be bonded to the back side of the circuit board 300 using solid glue to achieve a fixed connection between the transmitting base 410 and the circuit board 300.

[0160] A mounting groove 412 is formed at one end of the first mounting surface 411, and the mounting surface within the mounting groove 412 is recessed in the first mounting surface 411. The light-emitting assembly 430 is positioned within the mounting groove 412, and the mounting groove 412 is used to adjust the relative height of the top of the light-emitting assembly 430 and the front surface of the circuit board 300. For example, the mounting groove 412 allows the top of the light-emitting assembly 430 to be flush with the front surface of the circuit board 300.

[0161] In some embodiments, the TEC assembly 480 is located in the mounting groove 412. Exemplarily, the bottom of the TEC 481 is connected to the mounting surface of the mounting groove 412, so that the relative height between the top of the TEC 481 and the front of the circuit board 300 can be adjusted through the mounting groove 412.

[0162] In some embodiments, the transmitting base 410 includes a second mounting surface 413 that protrudes from the first mounting surface 411 and is located between the mounting slot 412 and the left side of the transmitting base 410. The combiner assembly 450 is disposed on the second mounting surface 413.

[0163] In some embodiments, a glue guide groove 414 is formed on the second mounting surface 413. The glue guide groove 414 is recessed in the second mounting surface 413. The combiner is placed on the second mounting surface 413, and then glue is injected into the glue guide groove 414 to achieve bonding and fixing of the combiner and the transmitting base 410 through the glue.

[0164] In some embodiments, two glue guiding grooves 414 are formed on the second mounting surface 413 . One of the glue guiding grooves 414 is covered under the first combiner 451 , and the other one of the glue guiding grooves 414 is covered under the second combiner 452 .

[0165] In some embodiments, a first baffle 415 and a second baffle 416 are formed on the first mounting surface 411 of the launch base 410. The first baffle 415 and the second baffle 416 extend from the first mounting surface 411 toward the upper housing 201. Exemplarily, the first baffle 415 and the second baffle 416 are parallel to the two lower side panels 2022 of the lower housing 202, respectively, and the second mounting surface 413 is located between the first baffle 415 and the second baffle 416.

[0166] In some embodiments, in the width direction of the launching base 410, the distance between the first baffle 415 and the second baffle 4165 is smaller than the width dimension of the launching base 410, there is a certain distance between the first baffle 415 and the side of the launching base 410 facing the lower side plate 2022, and there is a certain distance between the second baffle 416 and the side of the launching base 410 facing the other lower side plate 2022.

[0167] When the launching base 410 is embedded in the mounting hole 302, the first mounting surface 411 abuts against the back surface of the circuit board 300, the first baffle 415 and the second baffle 416 are located in the mounting hole 302, the first baffle 415 abuts against the rear side surface of the mounting hole 302, and the second baffle 416 abuts against the front side surface of the mounting hole 302, so as to limit the launching base 410 by the first baffle 415 and the second baffle 416.

[0168] In some embodiments, two glue guide grooves 414 are formed on the second mounting surface 413. One glue guide groove 414 has an opening on a side facing the first baffle 415 (the rear side of the first baffle 415). A gap exists between the glue guide groove 414 and the first baffle 415, allowing glue to be injected into the glue guide groove 414 through the gap, and the amount of glue in the glue guide groove 414 can be balanced by the gap. The other glue guide groove 414 has an opening on a side facing the second baffle 416 (the front side of the second baffle 416). A gap exists between the glue guide groove 414 and the second baffle 416, allowing glue to be injected into the glue guide groove 414 through the gap, and the amount of glue in the glue guide groove 414 can be balanced by the gap.

[0169] In some embodiments, the rear side of the first combiner 451 abuts against the first baffle 415 to limit the combiner through the first baffle 415; the front side of the second combiner 452 abuts against the second baffle 416 to limit the combiner through the second baffle 416.

[0170] In some embodiments, in order to improve the heat dissipation efficiency, a heat conductor 4101 is provided on the bottom surface of the launching base 410 (facing the bottom plate 2021 of the lower shell 202), and the launching base 410 is in contact with the bottom plate 2021 through the heat conductor 4101. The launching base 410 conducts heat to the heat conductor 4101, and the heat is conducted to the lower shell 202 via the heat conductor 4101, so as to improve the heat dissipation efficiency of the launching base 410 through the heat conductor 4101.

[0171] In some embodiments, a mounting platform 417 is formed at one end of the first mounting surface 411 (the left end in the figure), and the mounting platform 417 extends from the first mounting surface 411 toward the upper shell 201. In the width direction of the launching base 410, the width dimension of the mounting platform 417 is smaller than the width dimension of the launching base 410, and the width dimension of the mounting platform 417 is smaller than the distance between the first baffle 415 and the second baffle 416. The distance between the rear side surface of the mounting platform 417 and the rear side surface of the mounting hole 302 is the first width, and the distance between the front side surface of the mounting platform 417 and the front side surface of the mounting hole 302 is the second width. The first width and the second width may be the same.

[0172] In some embodiments, due to the coupling connection between the optical combiner and the fiber coupler, the first width and the second width may be different. For example, when the light outlet of the optical combiner is close to the first baffle 415 , the first width is smaller than the second width.

[0173] In some embodiments, the mounting platform 417 is formed with a first through hole 4171 and a second through hole 4172, which extend through the mounting platform 417 in the left-right direction. The first fiber optic fixing head 471 is inserted into the first through hole 4171, and the second fiber optic fixing head 472 is inserted into the second through hole 4172. In some embodiments, the top of the mounting platform 417 can directly support and connect the first and second fiber optic fixing heads 471 and 472.

[0174] Due to the different transmission media, the composite light is easily reflected at the fiber end face in the fiber coupler. Most of the composite light enters the fiber, and a small part of the composite light is reflected at the fiber end face. The reflected composite light may return to the laser along the original path, affecting the laser's luminescence performance.

[0175] To prevent reflected light from returning to the laser along its original path, a fiber optic ferrule 4711 and an isolator 4712 are provided within the first fiber optic fixture 471. The fiber optic ferrule 4711 is used to secure the end of the first optical fiber 711a, and the isolator 4712 is located at the end of the first optical fiber fixture 471 facing the first converging lens 461. The optical signal output by the first combiner 451 is converged into the first optical fiber fixture 471 via the first converging lens 461, passes through the isolator 4712, and is coupled to the first optical fiber 711a. When the optical signal is reflected at the end face of the first optical fiber 711a, the reflected optical signal is isolated by the isolator 4712 and cannot pass through the isolator 4712. As a result, the reflected light cannot return to the laser, thus ensuring the laser's luminous performance.

[0176] In some embodiments, the structure of the second optical fiber fixing head 472 may refer to the structure of the first optical fiber fixing head 471 .

[0177] Figure 13 is an exploded schematic diagram of another optical transmitter component provided according to some embodiments of the present disclosure, and Figure 14 is a partial schematic diagram of another optical transmitter component provided according to some embodiments of the present disclosure. As shown in Figures 13 and 14, the transmitter base 410 may include a third mounting surface 418, which is located at one end of the transmitter base 410 near the optical port; the third mounting surface 418 supports and connects the first optical fiber fixing head 471 and the second optical fiber fixing head 472.

[0178] In some embodiments, mounting platform 417 can be disposed on third mounting surface 418, positioned between the output optical path of first combiner 451 and the output optical path of second combiner 452. The rear side of mounting platform 417 is positionally coupled to the side of first fiber optic mounting head 471, while the front side of mounting platform 417 is positionally coupled to second fiber optic mounting head 472. This facilitates both the assembly and disassembly of first and second fiber optic mounting heads 471, 472, and reduces damage during disassembly.

[0179] In some embodiments, the transmitting base 410 may include a fourth mounting surface 419, which is located on a side of the second mounting surface 413 near the third mounting surface 418. A gap is formed between the fourth mounting surface 419 and the third mounting surface 418. The light input ends of the first optical fiber fixing head 471 and the second optical fiber fixing head 472 extend above the gap, which helps reduce assembly interference between the first optical fiber fixing head 471 and the second optical fiber fixing head 472, thereby ensuring assembly accuracy of the first optical fiber fixing head 471 and the second optical fiber fixing head 472.

[0180] In some embodiments, the fourth mounting surface 419 is higher than the third mounting surface 418. A step surface 4191 is formed on the side of the fourth mounting surface 419 that is closest to the third mounting surface 418. The step surface 4191 is located at the edge of the gap between the fourth mounting surface 419 and the third mounting surface 418. The bottom of the light input end of the first optical fiber fixing head 471 and the bottom of the light input end of the second optical fiber fixing head 472 abut against the step surface 4191. The step surface 4191 serves to limit the assembly of the first optical fiber fixing head 471 and the second optical fiber fixing head 472.

[0181] In some embodiments, the outer contours of the first optical fiber fixing head 471 and the second optical fiber fixing head 472 are square, that is, there are multiple planes on the first optical fiber fixing head 471 and the second optical fiber fixing head 472 to assemble and connect the transmitting base 410 through the planes.

[0182] In some embodiments, the light-emitting assembly 430 includes eight lasers 431, the collimating lens group 440 includes eight collimating lenses 441, the combiner group 450 includes a first combiner 451 and a second combiner 452, the converging lens group 460 includes a first converging lens 461 and a second converging lens 462, and the first optical fiber 711 includes a first optical fiber 711a and a first optical fiber 711b. The eight lasers 431 generate eight optical signals, which are converted into eight collimated lights by the eight collimating lenses 441. Four of the collimated lights are transmitted to the first combiner 451, where they are combined into a beam and transmitted to the first converging lens 461. The beam is then converged by the first converging lens 461 and transmitted to the first optical fiber 711a, allowing one optical fiber to transmit four optical signals. The other four collimated lights are transmitted to the second combiner 452 , combined into one beam by the second combiner 452 and transmitted to the second converging lens 462 , and then converged by the second converging lens 462 and transmitted to the first optical fiber 711 b , so that one optical fiber can transmit four optical signals.

[0183] Figure 15 is a schematic diagram of the structure of a launch cover provided according to some embodiments of the present disclosure, and Figure 16 is a diagram of a launch cover provided according to some embodiments of the present disclosure in use. In some embodiments, as shown in Figures 15 and 16, the launch cover 420 includes a top plate 4200, a first side plate 4201, a second side plate 4202, a third side plate 4203, a fourth side plate 4204, a fifth side plate 4205, a sixth side plate 4207, and a seventh side plate 4208. The first side plate 4201, the second side plate 4202, the third side plate 4203, the fourth side plate 4204, the fifth side plate 4205, the sixth side plate 4207, and the seventh side plate 4208 are respectively fixedly connected to the inner side surface of the top plate 4200. In some embodiments, the outer side surface of the top plate 4200 contacts the upper cover plate 2011, and the bottoms of the first side plate 4201, the second side plate 4202, and the third side plate 4203 are respectively connected to the front surface of the circuit board 300.

[0184] The second side panel 4202 is located on the right side of the launch cover 420, and an opening is formed on the left side of the launch cover 420. The first side panel 4201 and the third side panel 4203 are arranged opposite to each other, and the fifth side panel 4205 and the sixth side panel 4207 are arranged opposite to each other. The first side panel 4201 and the sixth side panel 4207 are located on the same side, the third side panel 4203 and the fifth side panel 4205 are located on the same side, and the fifth side panel 4205 and the sixth side panel 4207 are located on the left side of the launch cover 420. Both ends of the second side panel 4202 are connected to the first side panel 4201 and the third side panel 4203 respectively. The distance between the first side panel 4201 and the third side panel 4203 is greater than the distance between the fifth side panel 4205 and the sixth side panel 4207.

[0185] In some embodiments, when the first width between the mounting platform 4016 and the mounting hole 302 is smaller than the second width, the first side panel 4201 is connected to the sixth side panel 4207 through the seventh side panel 4208, and the seventh side panel 4208 is parallel to the second side panel 4202, so that the first side panel 4201 protrudes from the sixth side panel 4207; the third side panel 4203 is connected to the fifth side panel 4205 through the fourth side panel 4204, and the fourth side panel 4204 is tilted so that the third side panel 4203 protrudes from the fifth side panel 4205.

[0186] In some embodiments, when the launch cover 420 is covered on the launch base 410, the inner side surface of the top plate 4200 contacts the top surface of the mounting platform 417, and the first side plate 4201, the second side plate 4202, the third side plate 4203, the fourth side plate 4204, the fifth side plate 4205, the sixth side plate 4207 and the seventh side plate 4208 are connected to the front support of the circuit board 300 to fix and support the launch cover 420 through the circuit board 300.

[0187] In some embodiments, the fifth side plate 4205 and the sixth side plate 4207 are respectively in contact with the front and rear side surfaces of the mounting platform 417 so as to limit the launch cover 420 in the front and rear directions through the fifth side plate 4205 and the sixth side plate 4207 .

[0188] In some embodiments, a buckle 4206 is formed on the left side of the top plate 4200, and the buckle 4206 extends from the top plate 4200 toward the circuit board 300. The buckle 4206 is located between the fifth side plate 4205 and the sixth side plate 4207. When the launch cover 420 is covered on the launch base 410, the buckle 4206 is engaged with the left side surface of the mounting platform 417 to limit the launch cover 420 in the left and right directions through the buckle 4206.

[0189] Figure 17 is a schematic diagram of the structure of another launch cover provided according to some embodiments of the present disclosure, and Figure 18 is a schematic diagram of another launch cover provided according to some embodiments of the present disclosure in use. In some embodiments, as shown in Figures 17 and 18, the launch cover 420 includes a top plate 4200, an eighth side plate 4209, a ninth side plate 4210, a tenth side plate 4211, an eleventh side plate 4212, a twelfth side plate 4213, and a thirteenth side plate 4214. The tops of the eighth side plate 4209, the ninth side plate 4210, the tenth side plate 4211, the eleventh side plate 4212, the twelfth side plate 4213, and the thirteenth side plate 4214 are respectively fixedly connected to the inner side surface of the top plate 4200. A first spacer 4215 is formed between the eleventh side plate 4212 and the twelfth side plate 4213, and a second spacer 4216 is formed between the twelfth side plate 4213 and the thirteenth side plate 4214.

[0190] In some embodiments, the heights of the eleventh side panel 4212, the twelfth side panel 4213, and the thirteenth side panel 4214 are greater than the height of the eighth side panel 4209, and the heights of the ninth side panel 4210 and the tenth side panel 4211 are equal to the height of the eighth side panel 4209. Exemplarily, the bottoms of the eleventh side panel 4212, the twelfth side panel 4213, and the thirteenth side panel 4214 are flush, and the bottoms of the eighth side panel 4209, the ninth side panel 4210, and the tenth side panel 4211 are flush.

[0191] In some embodiments, when the launch cover 420 is placed on the launch base 410, the first spacer 4215 is assembled and connected to the first fiber optic fixing head 471, the second spacer 4216 is assembled and connected to the second fiber optic fixing head 472, and the side of the mounting platform 417 is restrained and connected to the twelfth side panel 4213. The mounting platform 417 allows the launch base 410 to be assembled and restrained with the launch cover 420, thereby reducing the risk of the launch cover 420 contacting components within the launch cavity during assembly. The front support of the circuit board 300 is connected to the bottom of the eighth side panel 4209, the ninth side panel 4210, and the tenth side panel 4211.

[0192] FIG19 is a partial schematic diagram of another optical emitting component provided according to some embodiments of the present disclosure, and FIG20 is a schematic diagram of the assembly of another optical emitting component and a circuit board provided according to some embodiments of the present disclosure. In some embodiments, as shown in FIG19 and FIG20 , the optical fiber fixing assembly 470 includes a third optical fiber fixing head 473, which is disposed on the transmitting base 410; the third optical fiber fixing head 473 is fixedly connected to the optical transmission assembly 700. The third optical fiber fixing head 473 is located on the output optical path of the light-emitting assembly 430. The third optical fiber fixing head 473 is used to fix the end of the optical transmission assembly 700 on the output optical path of the light-emitting assembly 430, so as to facilitate coupling the optical signal generated by the light-emitting assembly 430 to the first transmission group 710.

[0193] In some embodiments, the bottom of the third optical fiber fixing head 473 is fixedly connected to the transmitting base 410, and the middle portion of the third optical fiber fixing head 473 is connected to the end of the first optical fiber 711, so that the first optical fiber 711 extends transversely through the third optical fiber fixing head 473. Exemplarily, the first optical fiber 711 includes multiple optical fibers, and the multiple optical signals generated by the light-emitting assembly 430 are coupled to corresponding first optical fibers 711, allowing the first transmission group 710 to transmit multiple optical signals. For example, the first optical fibers 711 may include four or eight optical fibers.

[0194] In some embodiments, the light reflective component 400 may include an isolator assembly 490, which is disposed on the light-incident side of the third optical fiber fixture 473. The isolator assembly 490 is used to isolate the optical signal reflected back from the optical fiber end face of the first optical fiber 711. Exemplarily, the isolator assembly 490 includes a plurality of isolators 491, which are located on the side of the third optical fiber fixture 473. The isolators 491 are supported and connected to the emitting base, and are disposed correspondingly in the direction of the light-incident axis of the first optical fiber 711.

[0195] In some embodiments, an isolator assembly 490 is disposed on the transmission optical path from the collimating lens assembly 440 to the third optical fiber fixture 473. The optical signal collimated by the collimating lens assembly 440 passes through the isolator assembly 490 and is coupled to the first optical fiber 711 after passing through the isolator assembly 490. Exemplarily, the optical axis of the collimating lens 441 is coaxial with the optical axis of the first optical fiber 711, and the isolator 491 is located on the optical axis of the corresponding collimating lens 441.

[0196] In some embodiments, the isolator 491 is fixedly connected to the right side of the third optical fiber fixing head 473 , where the right side of the third optical fiber fixing head 473 is the side of the third optical fiber fixing head 473 facing the light emitting assembly 430 .

[0197] In some embodiments, the light-emitting component 430 generates multiple light signals, which are correspondingly transmitted to the collimating lenses 441 in the collimating lens group 440 and then collimated by the corresponding collimating lenses 441 and transmitted to the isolator group 490, and then coupled to the optical fiber of the optical transmission component 700 through the isolator group 490.

[0198] Figure 21 is a schematic diagram of another transmitting base structure provided according to some embodiments of the present disclosure. As shown in Figure 21, a relief groove 4131 is provided on the left side of the second mounting surface 413. The side of the relief groove 4131 extends to the left end surface of the transmitting base 410, the front end of the relief groove 4131 extends to the first baffle 415, and the rear end of the relief groove 4131 extends to the second baffle 416. The second mounting surface 413 supports and connects to the third fiber optic fixing head 473. The relief groove 4131 avoids the third fiber optic fixing head 473 to facilitate the assembly and connection between the third fiber optic fixing head 473 and the transmitting base 410.

[0199] In some embodiments, a pillar array is disposed on the right edge of second mounting surface 413, extending from the front of second mounting surface 413 to the rear of second mounting surface 413. The pillar array includes a plurality of pillars, with spaces between adjacent pillars. Isolators 491 in isolator assembly 490 are disposed within corresponding spaces, and the sidewalls of the pillars support and connect isolators 491.

[0200] In some embodiments, the front side of the first baffle 415 includes an assembly positioning surface 4151. The assembly positioning surface 4151 is formed by the front side of the first baffle 415 protruding toward the second baffle 416. The assembly positioning surface 4151 extends shorter than the rear side of the first baffle 415. Exemplarily, the assembly positioning surface 4151 is located in the middle of the front side of the first baffle 415, forming a raised structure on the front side of the first baffle. In this way, the assembly positioning surface 4151 can both assemble and position the third fiber optic fixing head 473 and reduce assembly obstructions to the third fiber optic fixing head 473. When the third fiber optic fixing head 473 is secured to the transmitting base 410, the rear side of the third fiber optic fixing head 473 abuts the assembly positioning surface 4151.

[0201] In some embodiments, the rear side surface of the second baffle 416 may include an assembly positioning surface, through which the third optical fiber fixing head 473 is assembled and positioned.

[0202] FIG22 is a schematic structural diagram of a third optical fiber fixing head provided according to some embodiments of the present disclosure, and FIG23 is a cross-sectional view of a third optical fiber fixing head provided according to some embodiments of the present disclosure. In some embodiments, as shown in FIG22 and FIG23 , the third optical fiber fixing head 473 includes an optical fiber support plate 4731 and an optical fiber cover plate 4732. The optical fiber cover plate 4732 covers and connects to the optical fiber support plate 4731, so that the optical fiber cover plate 4732 and the optical fiber support plate 4731 are fixedly connected to the end of the first optical fiber 711. Exemplarily, the optical fiber support plate 4731 supports and connects to the end of the first optical fiber 711, which extends from one end of the optical fiber support plate 4731 to the other end of the optical fiber support plate 4731. When the optical fiber cover plate 4732 covers and connects to the optical fiber support plate 4731, the light input end of the end face of the first optical fiber 711 is unobstructed, allowing the optical signal generated by the light-emitting assembly 430 to be transmitted to the end face of the first optical fiber 711 and coupled into the first optical fiber 711 through the end face of the first optical fiber 711.

[0203] In some embodiments, as shown in FIG22 , the left end of the fiber support plate 4731 is flush with the left end of the fiber cover plate 4732. Of course, in the disclosed embodiment, the left end of the fiber cover plate 4732 may extend beyond the left end of the fiber support plate 4731, i.e., the left end of the fiber cover plate 4732 is longer than the left end of the fiber support plate 4731. When the left end of the fiber cover plate 4732 extends beyond the left end of the fiber support plate 4731, the fiber cover plate 4732 effectively reduces the transitional bending of the first optical fiber 711 toward the top of the third optical fiber fixing head 473, thereby helping to protect the first optical fiber 711.

[0204] In some embodiments, the first optical fiber 711 includes multiple optical fibers, such as 2, 4, 8, etc.

[0205] In some embodiments, the fiber support plate 4731 is a single unitary structure, and the fiber cover plate 4732 is a single unitary structure. Of course, in some embodiments, the fiber support plate 4731 may include multiple support plates, and the fiber cover plate 4732 may include multiple cover plates, to form a third fiber fixing head 473 comprising multiple segments. Each segment can hold a number of optical fibers, such as two or four optical fibers. This facilitates coupling and securing the third fiber fixing head 473, ensuring efficient coupling of the optical signal to the first optical fiber 711.

[0206] Figure 24 is a cross-sectional view of another optical transmission component and circuit board provided according to some embodiments of the present disclosure. As shown in Figure 24, in some embodiments, the right end of the third optical fiber fixing head 473 is formed with an inclined surface 4733, and the inclined surface 4733 is not perpendicular to the top surface of the third optical fiber fixing head 473. The inclined angle of the inclined surface 4733 can be 2-7 degrees. The isolator 491 is fixedly connected to the inclined surface 4733, so that the isolator 491 is tilted in the optical path from the collimating lens 441 to the first optical fiber 711, which helps to ensure the isolation effect of the isolator 491.

[0207] In some embodiments, the light-emitting assembly 430 includes eight lasers 431, the collimating lens assembly 440 includes eight collimating lenses 441, the isolator assembly 490 includes eight isolators, and the first optical fiber 711 includes eight optical fibers. The eight lasers 431 generate eight optical signals, which are converted into eight collimated lights by the eight collimating lenses 441. The eight collimated lights are directly transmitted through the eight isolators 491 and emitted into the eight optical fibers, allowing each optical fiber to transmit one optical signal.

[0208] Figure 25 is a schematic diagram of the structure of another launch cover provided according to some embodiments of the present disclosure, and Figure 26 is a diagram of another launch cover provided according to some embodiments of the present disclosure in use. In some embodiments, as shown in Figures 25 and 26, the launch cover 420 includes a top plate 4200, an eighth side plate 4209, a ninth side plate 4210, a tenth side plate 4211, an eleventh side plate 4212, and a thirteenth side plate 4214. The tops of the eighth side plate 4209, the ninth side plate 4210, the tenth side plate 4211, the eleventh side plate 4212, and the thirteenth side plate 4214 are respectively fixedly connected to the inner side surface of the top plate 4200. A notch 4217 is formed between the eleventh side plate 4212 and the thirteenth side plate 4214. In some embodiments, the notch 4217 extends to the top plate 4200.

[0209] In some embodiments, bottoms of the eighth side panel 4209 , the ninth side panel 4210 , the tenth side panel 4211 , the eleventh side panel 4212 , and the thirteenth side panel 4214 are flush.

[0210] In some embodiments, a first buckle 4218 is provided at the bottom of the eleventh side plate 4212 and is located at the edge of the notch 4217. The first buckle 4218 is used to assemble the launch cover 420 and connect it to the launch base 410.

[0211] In some embodiments, a second buckle 4219 is provided at the bottom of the thirteenth side plate 4214 and is located at the edge of the notch 4217. The second buckle 4219 is used to assemble the launch cover 420 to connect with the launch base 410.

[0212] In some embodiments, when the launch cover 420 is placed on the launch base 410, the first optical fiber 711 passes through the notch 4217, the first latch 4218 abuts against the left side of the first baffle 415, and the second latch 4219 abuts against the left side of the second baffle 416. The first latch 4218 and the second latch 4219 are used to limit the connection between the launch cover 420 and the launch base 410.

[0213] Figure 27 is a partial schematic diagram of another transmitting component provided according to some embodiments of the present disclosure, and Figure 28 is a schematic diagram of the assembly of another transmitting component and a circuit board provided according to some embodiments of the present disclosure. In some embodiments, as shown in Figures 27 and 28, the optical fiber fixing assembly 470 includes a third optical fiber fixing head 473a and a third optical fiber fixing head 473b. The third optical fiber fixing head 473a and the third optical fiber fixing head 473b are arranged side by side on the transmitting base 410. The third optical fiber fixing head 473a and the third optical fiber fixing head 473b are respectively fixedly connected to the optical transmission assembly 700. The third optical fiber fixing head 473a and the third optical fiber fixing head 473b are respectively located in the output optical path of the light-emitting assembly 430. The third optical fiber fixing head 473a and the third optical fiber fixing head 473b are used to fix the end of the optical transmission assembly 700 to the output optical path of the light-emitting assembly 430, so as to facilitate coupling the optical signal generated by the light-emitting assembly 430 to the first transmission group 710.

[0214] In some embodiments, the third optical fiber fixing head 473a is fixedly connected to four optical fibers in the first optical fiber 711, and the third optical fiber fixing head 473b is fixedly connected to the other four optical fibers in the first optical fiber 711. The light emitting assembly 430 includes eight lasers 431. The optical signals generated by four lasers 431 are coupled to the optical fibers fixed by the third optical fiber fixing head 473a, and the optical signals generated by the other four lasers 431 are coupled to the optical fibers fixed by the third optical fiber fixing head 473b.

[0215] In some embodiments, the isolator assembly 490 may include a first isolator bracket 492 and a second isolator bracket 493. The first isolator bracket 492 is disposed at the light input end of the third fiber fixture 473a, and the second isolator bracket 493 is disposed at the light input end of the third fiber fixture 473b. A plurality of isolators 491 are mounted on the first isolator bracket 492, which securely supports the isolators 491. A plurality of isolators 491 are mounted on the second isolator bracket 493, which securely supports the isolators 491.

[0216] In some embodiments, a first isolator bracket 492 securely supports four isolators 491, while a second isolator bracket 493 securely supports four isolators 491. Optical signals generated by four lasers 431 are coupled through the isolators 491 on the first isolator bracket 492 to the optical fiber secured by the third optical fiber fixture 473a. Optical signals generated by another four lasers 431 are coupled through the isolators 491 on the second isolator bracket 493 to the optical fiber secured by the third optical fiber fixture 473b. The first isolator bracket 492 and the second isolator bracket 493 are secured to the transmitting base 410.

[0217] Figure 29 is a schematic diagram of the structure of another transmitting base provided in accordance with some embodiments of the present disclosure, and Figure 30 is a cross-sectional view of another optical transmitting component and circuit board provided in accordance with some embodiments of the present disclosure. In some embodiments, as shown in Figures 29 and 30, a first support platform 4133 is provided on the second mounting surface 413. The first support platform 4133 is located at the edge of the second mounting surface 413 and is formed by the second mounting surface 413 protruding toward the upper cover plate 2011. The first support platform 4133 can be located at the edge of the mounting slot 412.

[0218] In some embodiments, a first limiting post 4134 is provided at the edge of the first support platform 4133. The top surface of the first limiting post 4134 is higher than the top surface of the first support platform 4133. The right side of the first limiting post 4134 is limitedly connected to the first isolator bracket 492. Exemplarily, the first limiting post 4134 is provided on the first support platform 4133 and is provided at the edge of the top surface of the first support platform 4133.

[0219] In some embodiments, a second limiting post 4135 is provided on the edge of the first support platform 4133. The top surface of the second limiting post 4135 is higher than the top surface of the first support platform 4133. The side surface of the second limiting post 4135 is limited and connected to the second isolator bracket 493. Exemplarily, the second limiting post 4135 is provided on the first support platform 4133 and is provided on the edge of the top surface of the first support platform 4133.

[0220] In some embodiments, the right end face of the third optical fiber fixing head 473a abuts the first limiting post 4134 to limit the third optical fiber fixing head 473a through the left side of the first limiting post 4134; the right end face of the third optical fiber fixing head 473b abuts the second limiting post 4135 to limit the third optical fiber fixing head 473b through the left side of the second limiting post 4135.

[0221] In some embodiments, there is a gap between the second limiting post 4135 and the first limiting post 4134. Of course, in some embodiments, the rear side of the second limiting post 4135 and the front side of the first limiting post 4134 can be connected.

[0222] In some embodiments, a plurality of second support platforms 4136 are provided on the second mounting surface 413, and the second support platforms 4136 support and connect to the third optical fiber fixing head 473. For example, the second support platforms 4136 can be connected to the third optical fiber fixing head 473 by glue.

[0223] In some embodiments, adjacent second support platforms 4136 are spaced apart. When dispensing glue to secure the third optical fiber fixing head 473, glue can be dispensed into this space. The third optical fiber fixing head 473 is attached to the second mounting surface 413 via glue, and the second support platforms 4136 support the third optical fiber fixing head 473. This space can also be used to store excess glue. The top surface of the second support platforms 4136 is preferably flat, ensuring accurate assembly of the third optical fiber fixing head 473.

[0224] In some embodiments, the top surface of the second support platform 4136 is lower than the top surface of the first limiting column 4134 , and the top surface of the second support platform 4136 is lower than the top surface of the second limiting column 4135 .

[0225] In some embodiments, the plurality of second support platforms 4136 are arranged in two rows along the length of the optical module, with a gap between the two rows of second support platforms 4136. Each row of second support platforms 4136 includes multiple second support platforms 4136, with a gap between adjacent second support platforms 4136. For example, the second support platforms 4136 in the left row are located at the left edge of the second mounting surface 413.

[0226] In some embodiments, the first baffle 415 is positioned and connected to the third optical fiber fixing head 473a, and the second baffle 416 is positioned and connected to the third optical fiber fixing head 473b. Exemplarily, the first baffle 415 is fixedly connected to the third optical fiber fixing head 473a by fixing glue, and the second baffle 416 is fixedly connected to the third optical fiber fixing head 473b by fixing glue.

[0227] In some embodiments, two substrates 482 (substrate 482a and substrate 482b) are disposed on the TEC 481, four lasers 431 and four collimating lenses 441 are disposed on one substrate 482a, and another four lasers 431 and four collimating lenses 441 are disposed on another substrate 482b.

[0228] Figure 31 is a schematic diagram of the structure of another launch cover provided in accordance with some embodiments of the present disclosure, and Figure 32 is a diagram of another launch cover provided in accordance with some embodiments of the present disclosure in use. In some embodiments, as shown in Figures 31 and 32, the edge of the notch 4217 forms a first notched corner 4212a on the eleventh side panel 4212, and a second notched corner 4214a on the thirteenth side panel 4214.

[0229] In some embodiments, when the launch cover 420 is covered on the launch base 410, the launch cover 420 covers portions of the third optical fiber fixing head 473a and the third optical fiber fixing head 473b, and the third optical fiber fixing head 473a and the third optical fiber fixing head 473b span the notch 4217, and the ends of the third optical fiber fixing head 473a and the third optical fiber fixing head 473b away from the light-emitting component 430 are located outside the notch 4217.

[0230] In some embodiments, the first notched corner 4212 a avoids the first baffle 415 , and the second notched corner 4214 a avoids the second baffle 416 .

[0231] Figure 33 is a partially exploded schematic diagram of a first light receiving component provided according to some embodiments of the present disclosure, and Figure 34 is a schematic diagram of a partial structure of a first light receiving component provided according to some embodiments of the present disclosure. Figures 33 and 34 illustrate the structure of a first light receiving component 510. In some embodiments, as shown in Figures 33 and 34, the first light receiving component 510 includes an optical collimator 511, an optical splitter 512, a detector group 304, and a transimpedance amplifier group 305. The detector group 304 and the transimpedance amplifier group 305 are disposed on a circuit board 300. The light output end of the optical collimator 511 is connected to the light input end of the optical splitter 512. The output end face of the optical splitter 512 is a reflective surface, which is arranged at an angle and is located directly above the detector group 304. Exemplarily, the detector group 304 includes multiple detectors, such as N detectors, for receiving N optical signals.

[0232] In some embodiments, the detector group 304 and the transimpedance amplifier group 305 can be directly disposed on the circuit board 300. Of course, in the embodiments of the present disclosure, a substrate can be disposed on the circuit board 300, and the detector group 304 can be disposed on the substrate, so that the height of the photosensitive surfaces of the detectors in the detector group 304 can be adjusted through the substrate, and the distance between the photosensitive surfaces of the detectors and the output end face of the optical demultiplexer 512 can be adjusted through the substrate.

[0233] In some embodiments, the optical collimator 511 includes a single-mode fiber flange and a collimator. The optical fiber in the optical transmission assembly 700 is inserted into the optical collimator 511 through the single-mode fiber flange. The optical collimator 511 is located on the light-emitting surface of the internal optical fiber and is used to convert external light transmitted by the internal optical fiber into collimated light. Exemplarily, the second optical fiber 721 is inserted into the optical collimator 511 through the single-mode fiber flange.

[0234] In some embodiments, the second optical fiber 721 may include an optical fiber. A beam of composite light input from an external optical fiber is transmitted to the optical collimator 511 through the second optical fiber 721, and is transmitted to the optical splitter 512 through the optical collimator 511. One path of composite light is demultiplexed into multi-path light by the optical splitter 512. The multi-path light is reflected at the reflection surface of the optical splitter 512, and the light beam with an optical axis parallel to the circuit board 300 is reflected into a light beam with an optical axis perpendicular to the circuit board 300, so that the reflected light beam is incident on the detector group 304 to achieve light reception.

[0235] In some embodiments, the first light receiving component 510 may include a converging lens 515, which is disposed on the reflected light path of the optical splitter 512. The split light reflected by the reflective surface of the optical splitter 512 is converged to the detector by the converging lens 515, so as to ensure the receiving performance of the detector.

[0236] In some embodiments, the converging lens 515 is disposed on the optical demultiplexer 512. For example, the top of the converging lens 515 is connected to the bottom of the optical demultiplexer 512. Of course, the converging lens 515 can be directly disposed on the detector group 304.

[0237] After the detector in the detector group 304 receives the light beam reflected by the optical splitter 512, the detector converts the optical signal into an electrical signal, which is transmitted to the transimpedance amplifier group 305 via bonding wires. The electrical signal is amplified by the transimpedance amplifier and then transmitted to the gold finger 301 via a signal line. The amplified electrical signal is transmitted to the host computer via the gold finger 301, thereby realizing the reception of multiple light paths.

[0238] In some embodiments, when the split light reflected by the output end face of the optical splitter 512 enters the detector, due to the difference in transmission media, the split light may be reflected at the photosensitive surface of the detector, and the reflected light may return to the optical splitter 512 along the original path. The reflected light returns to the optical collimator 511 via the optical splitter 512, causing the reflected light and the composite light transmitted by the internal optical fiber to crosstalk in the optical collimator 511.

[0239] To prevent optical signal crosstalk, the first light receiving component 510 further includes a support plate 513. The bottom surface of the support plate 513 is mounted on the back of the circuit board 300. The top surface of the support plate 513 is tilted, and the optical splitter 512 is mounted on the top surface of the support plate 513. This tilts the optical splitter 512 so that the distance between the optical splitter 512 and the back of the circuit board 300 gradually decreases along the left-right direction (the light receiving direction). This allows light reflected from the detector's photosensitive surface to return to the reflective surface of the optical splitter 512, where it is reflected again. Because the optical splitter 512 is tilted, the light reflected from the reflective surface forms an angle with the received light transmitted by the optical splitter 512, preventing crosstalk between the reflected and received light.

[0240] In some embodiments, the optical demultiplexer 512 may be an optical demultiplexer based on arrayed waveguide grating (AWG) technology to achieve optical demultiplexing and coupling effects. The tilt angle between the optical demultiplexer 512 and the circuit board 300 is 2°.

[0241] In some embodiments, the first light receiving component 510 may include a receiving shell 514, which is covered on the back of the circuit board 300. A cavity is formed between the receiving shell 514 and the back of the circuit board 300. Part of the optical splitter 512, the detector group 304 and the transimpedance amplifier group 305 are located in the cavity to protect the detector group 304 and the transimpedance amplifier group 305 through the receiving shell 514.

[0242] FIG35 is a schematic diagram of the structure of a receiving shell provided according to some embodiments of the present disclosure. In some embodiments, as shown in FIG35 , the receiving shell 514 includes a receiving cover plate 5140, a first receiving side plate 5141, a second receiving side plate 5142, and a third receiving side plate 5143. The outer side of the receiving cover plate 5140 faces the lower shell 202. The first receiving side plate 5141, the second receiving side plate 5142, and the third receiving side plate 5143 are respectively fixedly connected to the receiving cover plate 5140. The second receiving side plate 5142 is the right side of the receiving shell 514. The two ends of the second receiving side plate 5142 are respectively fixedly connected to the first receiving side plate 5141 and the third receiving side plate 5143. The first receiving side plate 5141 and the third receiving side plate 5143 are arranged opposite each other. In this way, the receiving cover plate 5140, the first receiving side plate 5141, the second receiving side plate 5142, and the third receiving side plate 5143 form a shell with an upper side and a left side opening.

[0243] When the receiving shell 514 is buckled onto the back of the circuit board 300, the first receiving side plate 5141, the second receiving side plate 5142 and the third receiving side plate 5143 are supported and connected to the back of the circuit board 300. The first receiving side plate 5141, the second receiving side plate 5142 and the third receiving side plate 5143 are respectively bonded to the back of the circuit board 300 through solid glue to achieve a fixed connection between the receiving shell 514 and the circuit board 300.

[0244] In some embodiments, a first positioning claw 5144 is formed on the first receiving side plate 5141. The first positioning claw 5144 extends from the inner side of the first receiving side plate 5141 toward the third receiving side plate 5143. The left side of the first positioning claw 5144 is flush with the left side of the first receiving side plate 5141. The first positioning claw 5144 is used to receive the housing 514 and position the connected circuit board 300.

[0245] In some embodiments, a second positioning claw 5145 is formed on the third receiving side plate 5143. The second positioning claw 5145 extends from the inner side of the third receiving side plate 5143 toward the first receiving side plate 5141. The left side of the second positioning claw 5145 is flush with the left side of the third receiving side plate 5143. The second positioning claw 5145 is used to receive the housing 514 and position the connected circuit board 300.

[0246] The receiving shell 514 is buckled on the circuit board 300, and the reflecting surface of the optical splitter 512, the converging lens 515, the detector group 304 and the transimpedance amplifier group 305 are located in the cavity formed by the receiving shell 514 and the circuit board 300, so as to protect the detector group 304 and the transimpedance amplifier group 305, etc. through the cavity.

[0247] Figure 36 is a cross-sectional view of a light receiving component and a circuit board according to some embodiments of the present disclosure. In some embodiments, as shown in Figure 36, the light input end of the optical collimator 511 is connected to the second optical fiber 721, and the light output end of the optical collimator 511 is fixedly connected to the light input end of the optical splitter 512; the detector group 304 and the transimpedance amplifier group 305 are arranged on the surface of the circuit board 300, with the transimpedance amplifier group 305 located to the right of the detector group 304, and the support plate 513 is arranged on the surface of the circuit board 300 and to the left of the detector group 304; the optical splitter 512 is connected to the support plate 513 so that the optical splitter 512 is tilted by the support plate 513. One path of composite light is input to the optical collimator 511 through the second optical fiber 721, and is transmitted to the optical splitter 512 through the optical collimator 511. The optical splitter 512 splits the one path of composite light into multiple paths of light. The multiple paths of light are reflected by the reflection surface of the optical splitter 512, and the reflected light is converged to the corresponding detector in the detector group 304 through the converging lens 515.

[0248] Figure 37 is an exploded schematic diagram of another first light receiving component provided according to some embodiments of the present disclosure. In some embodiments, as shown in Figure 37, the first light receiving component 510 includes a receiving fixture 516, which is fixedly connected to a second optical fiber 721. The light output end of the receiving fixture 516 is located above the detector assembly 304. The second optical fiber 721 passes through the receiving fixture 516, so that the end face of the second optical fiber 721 extends above the detector assembly 304. The optical signal transmitted through the second optical fiber 721 is transmitted above the detector assembly 304, reflected by the end face of the second optical fiber 721, and transmitted to the corresponding detector in the detector assembly 304.

[0249] In some embodiments, a positioning post 5146 is provided at the bottom of the third receiving side plate 5143 , and the positioning post 5146 is used to receive the housing 514 and position the connection circuit board 300 .

[0250] In some embodiments, a positioning column may also be provided at the bottom of the first receiving side plate 5141 . The arrangement of the positioning column on the first receiving side plate 5141 may refer to the arrangement of the positioning column 5146 on the third receiving side plate 5143 .

[0251] In some embodiments, the second optical fiber 721 includes multiple optical fibers for transmitting multiple optical signals. The light output end of the receiving fixture 516 is located above the detector assembly 304. The detector assembly 304 includes multiple detectors. The multiple optical signals transmitted by the second optical fiber 721 are transmitted above the detector assembly 304, reflected by the fiber end face of the second optical fiber 721, and then transmitted to the corresponding detector in the detector assembly 304.

[0252] Figure 38 is a schematic structural diagram of a receiving fixing head provided according to some embodiments of the present disclosure, Figure 39 is a schematic exploded diagram of a receiving fixing head provided according to some embodiments of the present disclosure, and Figure 40 is a cross-sectional view of a receiving fixing head provided according to some embodiments of the present disclosure. In some embodiments, as shown in Figures 38-40, the receiving fixing head 516 includes a fiber support portion 5161 and a fiber fixing portion 5162, and the end of the second optical fiber 721 extends from one end of the fiber support portion 5161 to the other end of the fiber support portion 5161, and the fiber support portion 5161 supports and connects the second optical fiber 721. The fiber fixing portion 5162 covers the connected fiber support portion 5161 to fix the end of the second optical fiber 721 through the fiber support portion 5161 and the fiber fixing portion 5162.

[0253] In some embodiments, a reflective end face 7211 is provided at the end of the optical fiber in the second optical fiber 721, and the reflective end face 7211 is located above the detector group 304. The reflective end face 7211 is used to reflect and change the transmission direction of the optical signal transmitted by the second optical fiber 721, so as to reflect the optical signal transmitted by the second optical fiber 721 to the corresponding detector in the detector group 304.

[0254] In some embodiments, the reflective end surface 7211 is an inclined surface, and the received optical signal transmitted by the second optical fiber 721 is totally reflected at the reflective end surface 7211. Exemplarily, the inclination angle of the reflective end surface 7211 is 46-50°, such as 48°.

[0255] In some embodiments, the second optical fiber 721 passes through one end of the optical fiber support portion 5161 and extends outside the other end of the optical fiber support portion 5161, so that the reflective end face 7211 is located outside the other end of the optical fiber support portion 5161. One end of the optical fiber fixing portion 5162 is connected to one end of the optical fiber support portion 5161, and the other end of the optical fiber fixing portion 5162 is located outside the other end of the optical fiber support portion 5161. The other end of the optical fiber fixing portion 5162 is fixedly connected to the end of the second optical fiber 721 to support the end of the second optical fiber 721. In this way, the other end of the optical fiber support portion 5161 is shorter than the other end of the optical fiber fixing portion 5162, which facilitates the receiving fixture 516 to avoid the detector assembly 304 and ensures the adaptability of the receiving fixture 516.

[0256] In some embodiments, a protective surface 5163 is formed at the other end of the optical fiber fixing portion 5162. The protective surface 5163 surrounds the side of the reflective end surface 7211 and is used to protect the reflective end surface 7211. Exemplarily, the protective surface 5163 is an inclined surface, and the inclination angle of the protective surface 5163 is 46-50 degrees, such as 48 degrees.

[0257] In some embodiments, the second optical fiber 721 includes four optical fibers, which are arranged side by side on the optical fiber support 5161. The detector assembly 304 includes four detectors, and four optical signals are transmitted through the four optical fibers of the second optical fiber 721. The four optical signals are reflected by the corresponding reflective end faces 7211 to the corresponding detectors.

[0258] In some embodiments, the bottom of the optical fiber support portion 5161 is connected to the circuit board 300. In some embodiments, a support plate 513 is provided on the circuit board 300, and the support plate 513 supports and connects to the optical fiber support portion 5161.

[0259] FIG41 is a schematic diagram of another structure of a receiving fixed head according to some embodiments of the present disclosure. In some embodiments, as shown in FIG41 , the first light receiving component 510 may include a lens matrix 517 , which is arranged on the optical path from the reflective end surface 7211 to the detector group 304 and is used to converge and transmit the optical signal reflected by the reflective end surface 7211 .

[0260] In some embodiments, a lens mounting surface 5164 is provided at the bottom of the other end of the fiber support portion 5161. The lens mounting surface 5164 is located above the detector assembly 304, and the lens matrix 517 is fixedly connected to the lens mounting surface 5164. Exemplarily, the lens mounting surface 5164 is an inclined surface, such that the normal of the lens mounting surface 5164 is not perpendicular to the extension direction of the second optical fiber 721. The inclination angle of the lens mounting surface 5164 is 5-10°, for example, 8°.

[0261] In some embodiments, the other end of the optical fiber support portion 5161 extends beyond the reflective end surface 7211 to provide sufficient space for setting up the lens mounting surface 5164.

[0262] In some embodiments, the second light receiving component 520 includes N detectors for receiving N optical signals. The structure of the second light receiving component 520 can be the same as or similar to that of the first light receiving component 510. The specific structure of the second light receiving component 520 can refer to the first light receiving component 510 provided in the above embodiment.

[0263] In some embodiments, the second light receiving component 520 receives an optical signal transmitted through a third optical fiber 731 . The configuration of the third optical fiber 731 may refer to the configuration of the second optical fiber 721 in the above example.

[0264] Figure 42 is a partial schematic diagram of a circuit board according to some embodiments of the present disclosure. In some embodiments, as shown in Figure 42 , a first connection layer 310 is provided at the edge of the mounting hole 302. The first connection layer 310 is attached to the top surface of the circuit board 300. The transmitting cover 420 is bonded to the first connection layer 310 with glue to securely connect the transmitting cover 420 to the circuit board 300. The first connection layer 310 facilitates strengthening the connection between the transmitting cover 420 and the circuit board 300, ensuring a secure bond between the transmitting cover 420 and the circuit board 300.

[0265] In some embodiments, the first connection layer 310 may be a metal layer attached to the top surface of the circuit board 300 , such as a copper layer, a gold layer, etc. attached to the top surface of the circuit board 300 .

[0266] In some embodiments, a first connection layer 310a and a first connection layer 310b are provided at the edge of the mounting hole 302. The first connection layer 310a is located on one side of the mounting hole 302 in the longitudinal direction, and the first connection layer 310b is located on the other side of the mounting hole 302 in the longitudinal direction. The first connection layer 310a and the first connection layer 310b are respectively bonded to the bottom of the side panel of the transmitting cover plate 420.

[0267] In some embodiments, the first connection layer 310 may be a metal layer attached to the surface of the circuit board 300 , such as a copper layer.

[0268] FIG43 is a second partial schematic diagram of a circuit board provided according to some embodiments of the present disclosure. In some embodiments, as shown in FIG43 , a second connection layer 320 is provided at the edge of the mounting hole 302, and the second connection layer 320 is attached to the back of the circuit board 300. The transmitting base 410 is bonded to the second connection layer 320 with glue to achieve a fixed connection between the transmitting base 410 and the circuit board 300. The second connection layer 320 facilitates strengthening the connection between the transmitting base 410 and the circuit board 300 to ensure the bonding strength between the transmitting base 410 and the circuit board 300. Exemplarily, the second connection layer 320 is a metal layer attached to the back of the circuit board 300, such as a copper layer or gold layer attached to the top surface of the circuit board 300.

[0269] In some embodiments, the second connection layer 320 is provided with a first groove 330, the bottom of which extends into the circuit board 300. The first groove 330 is used to separate the second connection layer 320. Exemplarily, the second connection layer 320 is provided with multiple first grooves 330, with the spacing between adjacent first grooves 330 being equal or similar. The provision of the first grooves 330 in the second connection layer 320 reduces the flatness of the second connection layer 320, thereby relatively reducing the adhesive force between the second connection layer 320 and the launch base 410, thereby minimizing damage to the circuit board 300 during repair and removal of the launch base 410.

[0270] In some embodiments, the width of the first grooves 330 and the intervals between adjacent first grooves 330 are equal to or similar to each other, so as to balance the bonding strength between the transmitting base 410 and the circuit board 300 .

[0271] In some embodiments, second connecting layers 320a, 320b, and 320c are disposed along the edges of mounting hole 302. As shown in FIG43 , second connecting layer 320a is located above mounting hole 302, second connecting layer 320b is located to the right of mounting hole 302, and second connecting layer 320c is located below mounting hole 302. Second connecting layers 320a, 320b, and 320c are each bonded and connected to first mounting surface 411 of transmitting base 410.

[0272] In some embodiments, the second connection layer 320a, the second connection layer 320b, or the second connection layer 320c is provided with a first groove 330. Of course, in some embodiments, the second connection layer 320a, the second connection layer 320b, and the second connection layer 320c are all provided with a first groove 330, and the second connection layer 320a, the second connection layer 320b, and the second connection layer 320c are respectively continuous, so as to better balance the bonding force between the transmitting base 410 and the circuit board 300.

[0273] In some embodiments, grooves may be provided on the first connection layer 310. For example, grooves may be provided on the first connection layer 310a and the first connection layer 310b.

[0274] In some embodiments, a third connection layer 340 is further disposed on the back side of the circuit board 300. The third connection layer 340 is located in the projection area of ​​the first light receiving component 510 in the direction of the circuit board 300. For example, the third connection layer 340 is bonded to the optical splitter 512, the support plate 513, or the receiving fixture 516. In the disclosed embodiment, the third connection layer 340 can be disposed on the front side of the circuit board 300.

[0275] In some embodiments, a second groove 350 is provided on the third connection layer 340. The bottom of the second groove 350 extends into the circuit board 300. The second groove 350 is used to isolate the third connection layer 340. Exemplarily, the second groove 350 extends along the length of the circuit board 300. The second groove 350 is used to balance the adhesion between the optical splitter 512, the support plate 513, or the receiving fixture 516 and the circuit board 300, effectively reducing damage to the circuit board 300 caused by rework and removal of the optical splitter 512, the support plate 513, or the receiving fixture 516. The second groove 350 may include multiple grooves, each arranged side by side and extending along the length of the circuit board 300.

[0276] In some embodiments, the third connection layer 340 includes a welding portion 341, which is located on a side of the third connection layer 340 away from the mounting hole 302. The welding portion 341 connects the detector group 304 and the transimpedance amplifier group 305 by welding.

[0277] In some embodiments, a blocking groove 360 ​​may be provided on the third connecting layer 340. The blocking groove 360 ​​is located at the edge of the welding portion 341 to prevent glue from overflowing toward the welding portion 341. Exemplarily, the blocking groove 360 ​​extends from the edge of the welding portion 341 away from the welding portion 341, so that the blocking groove 360 ​​extends to the edge of the third connecting layer 340, thereby preventing glue from overflowing and flowing toward areas outside the third connecting layer 340.

[0278] In some embodiments, the width of the blocking groove 360 ​​is smaller than the width of the second cutout 350. For example, the blocking groove 360 ​​is intermittently arranged around the side of the second cutout 350 and is spaced apart from the second cutout 350, thereby balancing the adhesive force between the third connecting layer 340 and the support plate 513, etc., and preventing glue from overflowing outside the third connecting layer 340.

[0279] In some embodiments, a first positioning groove 306 and a second positioning groove 307 are provided at the edge of the third connection layer 340. The first positioning groove 306 is located on one side of the third connection layer 340, and the second positioning groove 307 is located on the other side of the third connection layer 340. The first positioning groove 306 and the second positioning groove 307 are used to position and connect the receiving housing 514. For example, the first positioning groove 306 is used to position and connect the first positioning claw 5144 or the positioning post 5146.

[0280] In some embodiments, the first positioning groove 306 or the second positioning groove 307 is a circular groove or a waist-shaped groove. Exemplarily, the first positioning groove 306 is located at an edge of the circuit board 300.

[0281] In some embodiments, a fourth connection layer 370 is further disposed on the back side of the circuit board 300. The fourth connection layer 370 is located in the projection area of ​​the second light receiving component 520 in the direction of the circuit board 300. The structural morphology of the fourth connection layer 370 can refer to that of the third connection layer 340. In some embodiments, a third positioning groove 308 and a fourth positioning groove 309 are disposed on the edge of the fourth connection layer 370.

[0282] Figure 44 is a partial schematic diagram of the interior of an optical module provided according to some embodiments of the present disclosure, and shows the use of an adapter fixing component. In some embodiments, the first transmission assembly 710 may include a first fiber optic adapter 712, which connects to a portion of the first optical fiber 711. The first fiber optic adapter 712 is connected to a fiber fixing component 800, thereby fixing the first fiber optic adapter 712 to the optical port of the optical module via the fiber fixing component 800. A portion of the first optical fiber 711 is optically connected to an external optical fiber through the first fiber optic adapter 712, and the optical signal transmitted by the first optical fiber 711 is coupled to the external optical fiber via the first fiber optic adapter 712.

[0283] In some embodiments, the first transmission assembly 710 may include a second fiber optic adapter 713, which is connected to a portion of the first optical fiber 711. The second fiber optic adapter 713 is connected to a fiber optic fixing component 800, thereby fixing the second fiber optic adapter 713 to the optical port of the optical module via the fiber optic fixing component 800. A portion of the first optical fiber 711 is optically connected to an external optical fiber via the second fiber optic adapter 713, and the optical signal transmitted by the first optical fiber 711 is coupled to the external optical fiber via the second fiber optic adapter 713.

[0284] In some embodiments, the second transmission assembly 720 may include a third fiber optic adapter 722, which is connected to the second optical fiber 721. The third fiber optic adapter 722 is connected to the optical fiber fixing component 800, thereby fixing the third fiber optic adapter 722 to the optical port of the optical module via the fiber fixing component 800. The second optical fiber 721 is optically connected to an external optical fiber through the third fiber optic adapter 722, and the optical signal transmitted by the external optical fiber is coupled to the second optical fiber 721 at the third fiber optic adapter 722.

[0285] In some embodiments, the third transmission assembly 730 may include a fourth fiber optic adapter 732, which is connected to the third optical fiber 731. The fourth fiber optic adapter 732 is connected to the optical fiber fixing component 800, thereby securing the third fiber optic adapter 732 to the optical port of the optical module. The third optical fiber 731 is optically connected to an external optical fiber via the fourth fiber optic adapter 732. The optical signal transmitted by the external optical fiber is coupled to the third optical fiber 731 via the fourth fiber optic adapter 732.

[0286] In some embodiments, the optical fiber fixing component 800 may include an optical fiber fixing bracket 810, and the first optical fiber adapter 712 and the like are fixedly connected to the optical fiber fixing bracket 810. The optical fiber fixing bracket 810 is assembled at the optical port of the optical module. For example, the optical fiber fixing bracket 810 is fixedly connected to the lower housing 202, etc., so that the optical port of the optical module, such as the first optical fiber adapter 712, can be fixedly connected to the optical fiber fixing bracket 810.

[0287] In some embodiments, the optical fiber securing member 800 may include a gasket 820. The gasket 820 is assembled and connected to the first optical fiber adapter 712, etc., to ensure that the first optical fiber adapter 712, etc. is sealed to the housing of the optical module. For example, the first optical fiber adapter 712, etc. is sealed to the lower housing 202 via the gasket 820 to secure the first optical fiber adapter 712, etc., and to reduce movement of the first optical fiber adapter 712, etc. when plugging and unplugging the external optical fiber.

[0288] In some embodiments, gasket 820 can be referred to as a shielding plate. For example, gasket 820 can be a shielding gasket to shield electromagnetic radiation. Electrical components on circuit board 300, optical components of optical transmitter 400, and electrical components of optical receiver 500 can generate various electromagnetic radiation issues during operation, easily causing the optical module's electromagnetic interference (EMI) to exceed standards. Shielding gaskets are provided on first optical fiber adapter 712 and other components to achieve electromagnetic compatibility (EMC) shielding for the optical module.

[0289] Figure 45 is a schematic diagram of the structure of a fixing bracket provided according to some embodiments of the present disclosure, and Figure 46 is a schematic diagram of the structure of a fixing bracket provided according to some embodiments of the present disclosure. In some embodiments, a fiber optic fixing bracket 810 includes a fixing plate 811, which is used to connect a first fiber optic adapter 712, etc. A first assembly hole 812 is defined in the fixing plate 811, which extends through the fixing plate 811 and is used to connect the fiber optic adapter 712, etc. A slit 813 is formed on the edge of the fixing plate 811, which communicates with the first assembly hole 812. Exemplarily, the fixing plate 811 has multiple first assembly holes 812, and multiple slits 813 are formed along the edge of the fixing plate 811, each of which communicates with a corresponding first assembly hole 812. The slits 813 may be located on the left, right, top, or bottom edge of the fixing plate 811.

[0290] In some embodiments, the width of the slit 813 is less than one quarter of the inner diameter of the first assembly hole 812 .

[0291] In some embodiments, a first row of assembly holes 812a and a second row of assembly holes 812b are defined on the fixing plate 811. The first row of assembly holes 812a is located on the left side of the fixing plate 811, and the second row of assembly holes 812b is located on the right side of the fixing plate 811. Exemplarily, the first row of assembly holes 812a and the second row of assembly holes 812b each include two first assembly holes 812, thereby forming four first assembly holes 812 arranged in rows of two on the fixing plate 811.

[0292] In some embodiments, a first row of slits 813a is provided on the left edge of the fixing plate 811, and a second row of slits 813b is provided on the right edge of the fixing plate 811. The slits in the first row of slits 813a correspond to and communicate with the first assembly holes 812 in the first row of assembly holes 812a, and the slits in the second row of slits 813b correspond to and communicate with the first assembly holes 812 in the second row of assembly holes 812b.

[0293] In some embodiments, the fiber optic fixing frame 810 may include a connecting plate 814, which is located on one side of the bottom of the fixing plate 811 and connected to the fixing plate 811. The connecting plate 814 is assembled and connected to the lower housing 202, so that the fiber optic fixing frame 810 is seated in the lower housing 202 through the connecting plate 814, thereby facilitating the assembly of the fiber optic fixing frame 810 in the lower housing 202.

[0294] In some embodiments, a relief groove 8141 is provided on the top surface of the connecting plate 814, and the bottom surface of the connecting plate 814 is assembled with the connecting base plate 2021. One end of the relief groove 8141 is located below the first assembly hole 812 and passes through the connecting plate 814. The relief groove 8141 is used to avoid the optical fiber adapter.

[0295] In some embodiments, the first assembly hole 812 includes a fixing portion 8121 and a limiting portion 8122, the fixing portion 8121 is located at the front end of the limiting portion 8122, a step surface 8123 is formed between the fixing portion 8121 and the limiting portion 8122, and an assembly bevel 8124 is provided on the fixing portion 8121, and the step surface 8123 and the assembly bevel 8124 cooperate to assemble and connect the optical fiber adapter.

[0296] In some embodiments, the fiber optic mounting bracket 810 may include a first fixing arm 815 and a second fixing arm 816, which are used to connect the fiber optic mounting bracket 810 to the lower housing 202. For example, one end of the first fixing arm 815 is connected to the left side of the fixing plate 811, one end of the second fixing arm 816 is connected to the right side of the fixing plate 811, and the other ends of the first fixing arm 815 and the second fixing arm 816 are assembled with the lower side plate 2022.

[0297] In some embodiments, a first positioning protrusion 8151 is provided on the outer side of the other end of the first fixed arm 815 . The first positioning protrusion 8151 protrudes from the outer side surface of the first fixed arm 815 . The first positioning protrusion 8151 is limitedly connected to the inner wall of the lower side plate 2022 .

[0298] In some embodiments, a first limiting protrusion 8152 is formed on the top of the first fixing arm 815. The first limiting protrusion 8152 is formed by a protrusion protruding outward from the top surface of the first fixing arm 815. The top surface of the first limiting protrusion 8152 is located higher than the position of the slit 813. The first limiting protrusion 8152 is used to limit the position of the optical fiber, thereby confining the optical fiber to the inside of the first fixing arm 815 and preventing the optical fiber from extending outside the first fixing arm 815 and causing damage to the optical fiber. The first limiting protrusion 8152 is located in the middle and rear portion of the first fixing arm 815.

[0299] In some embodiments, a second positioning protrusion 8161 is provided on the outer side of the other end of the second fixed arm 816 , and the second positioning protrusion 8161 protrudes from the outer side surface of the second fixed arm 816 , and the second positioning protrusion 8161 is limitedly connected to the inner wall of the lower side plate 2022 .

[0300] In some embodiments, a second limiting protrusion 8162 is formed on the top of the second fixing arm 816. The second limiting protrusion 8162 is formed by a protrusion extending outward from the top surface of the second fixing arm 816. The top surface of the second limiting protrusion 8162 is located higher than the position of the slit 813. The second limiting protrusion 8162 is used to limit the optical fiber, thereby confining the optical fiber to the inside of the second fixing arm 816 and preventing the optical fiber from extending outside the second fixing arm 816 and causing damage to the optical fiber. The second limiting protrusion 8162 is located at the middle and rear portion of the second fixing arm 816.

[0301] In some embodiments, one end of the first fixing arm 815 is located between the first row of slits 813a. For example, the slits 813 in the first row of slits 813a are arranged along the upper and lower sides of the first fixing arm 815, which not only facilitates the processing of the slits 813 but also ensures the connection strength between the first fixing arm 815 and the fixing plate 811.

[0302] In some embodiments, one end of the second fixing arm 816 is located between the second row of slits 813b. For example, the slits 813 in the second row of slits 813b are arranged along the upper and lower sides of the second fixing arm 816, which not only facilitates the processing of the slits 813 but also ensures the connection strength between the second fixing arm 816 and the fixing plate 811.

[0303] In some embodiments, the fixing plate 811 includes a mounting surface 8111 , and the mounting surface 8111 is configured to contact the connection pad 820 .

[0304] In some embodiments, a limiting platform is formed on the fixing plate 811 . The limiting platform is disposed on an edge of the fixing plate 811 , and is formed by an outward protrusion of an edge of the mounting surface 8111 .

[0305] In some embodiments, a first limiting platform 8112 and a second limiting platform 8113 are formed on the fixing plate 811. The first limiting platform 8112 is located on the left edge of the fixing plate 811, and the second limiting platform 8113 is located on the right edge of the fixing plate 811. The first limiting platform 8112 and the second limiting platform 8113 are used to limit the side of the connecting gasket 820. For example, the first row of slits 813a extends through the first limiting platform 8112, and the second row of slits 813b extends through the second limiting platform 8113.

[0306] In some embodiments, a third limiting platform 8114 is formed on the fixing plate 811. The third limiting platform 8114 is located at the upper edge of the mounting surface 8111 and between the first row of assembly holes 812a and the second row of assembly holes 812b. The third limiting platform 8114 is used to limit the connection gasket 820.

[0307] In some embodiments, a fourth limiting platform 8115 is formed on the fixing plate 811. The fourth limiting platform 8115 is located at the lower edge of the mounting surface 8111 and between the first row of assembly holes 812a and the second row of assembly holes 812b. The fourth limiting platform 8115 is used to limit the connection gasket 820.

[0308] Figure 47 is a schematic diagram of a gasket according to some embodiments of the present disclosure, and Figure 48 is a diagram illustrating a fiber optic mounting bracket in use according to some embodiments of the present disclosure. As shown in Figure 47 , gasket 820 is provided with a second assembly hole 821 extending through gasket 820. Second assembly hole 821 is used to attach a fiber optic adapter. Exemplarily, gasket 820 may include multiple second assembly holes 821; for example, four second assembly holes 821 may be arranged in pairs.

[0309] In some embodiments, a first slot 822 is defined on the upper edge of the gasket 820 and extends through the gasket 820. The first slot 822 is assembled and connected to the third limiting platform 8114. For example, the height of the third limiting platform 8114 is less than or equal to the thickness of the gasket 820.

[0310] In some embodiments, a second slot 823 is formed on the lower edge of the gasket 820 and passes through the gasket 820. The second slot 823 is assembled and connected to the fourth limiting platform 8115. Exemplarily, the height of the fourth limiting platform 8115 is less than or equal to the thickness of the gasket 820.

[0311] In some embodiments, the assembly process of the optical fiber adapter, the optical fiber fixing frame 810 and the gasket 820 is as follows: first, the optical fiber at the tail of the optical fiber adapter is installed into the first assembly hole 812 through the slit 813, and then the optical fiber is dragged so that the optical fiber adapter is matched and connected with the step surface 8123 and the assembly inclined surface 8124 of the first assembly hole 812, and then the gasket 820 is put on the optical fiber adapter. Finally, the gasket 820 is pushed toward the fixing plate 811 so that the gasket 820 is located between the first limit platform 8112 and the second limit platform 8113, the first card slot 822 is assembled and connected to the third limit platform 8114, and the second card slot 823 is assembled and connected to the fourth limit platform 8115.

[0312] Figure 49 is a schematic diagram of the structure of another optical fiber holder provided according to some embodiments of the present disclosure, and Figure 50 is a schematic diagram of the assembly of another optical fiber holder and a gasket provided according to some embodiments of the present disclosure. In some embodiments, as shown in Figures 49 and 50, a first mounting portion 8153 is formed on the outer side wall of the other end of the first fixing arm 815, which is assembled and connected to the inner side wall of the lower side plate 2022. The thickness of the other end of the first fixing arm 815 is greater than that of the first end of the first fixing arm 815, thereby enhancing the strength of the other end of the first fixing arm 815. Exemplarily, the first mounting portion 8153 is formed by the other end of the first fixing arm 815 expanding toward the left and right sides of the first fixing arm 815. The first mounting portion 8153 increases the secure assembly between the first fixing arm 815 and the lower side plate 2022, reduces the possibility of loosening of the optical fiber holder, and facilitates the molding of the first fixing arm 815.

[0313] In some embodiments, a second mounting portion 8163 is formed at the other end of the second fixing arm 816. The second mounting portion 8163 is thicker than the thickness of one end of the second fixing arm 816. The second mounting portion 8163 is assembled and connected to the inner sidewall of the lower side plate 2022. Exemplarily, the second mounting portion 8163 is formed by the other end of the second fixing arm 816 expanding toward the left and right sides of the second fixing arm 816. The second mounting portion 8163 enhances the secure assembly between the second mounting portion 8163 and the lower side plate 2022, reducing the possibility of loosening of the optical fiber holder. The second mounting portion 8163 also facilitates the molding of the second fixing arm 816.

[0314] Figure 51 is a partial schematic diagram of a lower housing provided according to some embodiments of the present disclosure, Figure 52 is a diagram of a lower housing in use according to some embodiments of the present disclosure, and Figure 53 is a diagram of a lower housing in use according to some embodiments of the present disclosure. In some embodiments, as shown in Figures 51-53, a base 2023 is formed at one end of the lower housing 202. The base 2023 extends from the left side of the lower housing 202 toward the right side. A socket 2024 is formed on the base 2023, connecting the optical port of the optical module and the inner cavity of the lower housing 202. The front end of the fiber optic adapter is assembled with the connection socket 2024. Exemplarily, the base 2023 has multiple sockets 2024, such as four sockets 2024 arranged in a row of two. The gasket 820 is located between the card holder 2023 and the optical fiber fixing frame 810 ; for example, the optical fiber fixing frame 810 squeezes and fixes the gasket 820 between the optical fiber fixing frame 810 and the card holder 2023 .

[0315] In some embodiments, a first positioning groove 2025 is formed on the lower side plate 2022 of the lower housing 202. The first positioning groove 2025 is formed by the inner side wall of the lower side plate 2022 being recessed toward the outside of the lower side plate 2022. The first positioning groove 2025 is assembled and connected to the other end of the first fixing arm 815. For example, the first positioning protrusion 8151 is assembled and connected to the first positioning groove 2025, or the first assembly portion 8153 is assembled and connected to the first positioning groove 2025.

[0316] In some embodiments, a second positioning groove 2026 is formed on the lower side plate 2022 on the other side of the lower housing 202. The second positioning groove 2026 is formed by the inner side wall of the lower side plate 2022 being recessed toward the outside of the lower side plate 2022. The second positioning groove 2026 is assembled and connected to the other end of the second fixing arm 816. For example, the second positioning protrusion 8161 is assembled and connected to the second positioning groove 2026, or the second assembly portion 8163 is assembled and connected to the second positioning groove 2026.

[0317] Figure 54 is a schematic diagram of the structure of another optical fiber mounting bracket provided according to some embodiments of the present disclosure, and Figure 55 is a schematic diagram of the assembly of another optical fiber mounting bracket provided according to some embodiments of the present disclosure. In some embodiments, as shown in Figures 54 and 55, a mounting groove 817 is provided on the lower edge of the fixing plate 811, and the mounting groove 817 extends through the fixing plate 811. For example, the extending direction of the mounting groove 817 is the same as the extending direction of the first mounting hole 812. A mounting post 2027 is provided on the lower housing 202, and the mounting post 2027 is assembled and connected to the mounting groove 817; for example, the mounting post 2027 is provided on the base plate 2021. Of course, in some embodiments, the mounting post can be provided on the fixing plate 811, and the mounting groove can be provided on the base plate 2021.

[0318] In some embodiments, a fixing hole 818 is provided on the fixing plate 811 , the fixing hole 818 communicates with the assembly slot 817 , and a screw passes through the fixing hole 818 to be fixedly connected to the mounting post 2027 , so that the optical fiber fixing frame 810 is fixedly connected to the lower housing 202 .

[0319] In some embodiments, a fifth limiting platform 8116 is formed on the upper edge of the fixing plate 811 , one end of the fifth limiting platform 8116 is connected to the first limiting platform 8112 , and the other end of the fifth limiting platform 8116 is connected to the second limiting platform 8113 . The fifth limiting platform 8116 limits the upper side of the connection gasket 820 .

[0320] In some embodiments, a sixth limiting platform 8117 is formed on the lower edge of the fixing plate 811. One end of the sixth limiting platform 8117 is connected to the first limiting platform 8112, and the other end of the sixth limiting platform 8117 is connected to the second limiting platform 8113. The assembly groove 817 passes through the sixth limiting platform 8117. The sixth limiting platform 8117 limits the lower side of the connection gasket 820.

[0321] Figure 56 is a schematic diagram (I) of another optical fiber securing component provided according to some embodiments of the present disclosure. Figure 57 is a schematic diagram (II) of another optical fiber securing component provided according to some embodiments of the present disclosure. Figure 58 is a cross-sectional view (I) of another optical fiber securing component provided according to some embodiments of the present disclosure. In some embodiments, as shown in Figures 56-58 , optical fiber securing component 800 may include an optical fiber bracket 830, which includes a bracket plate 831. A first support group 831a is provided on the upper side of bracket plate 831, and optical fiber adapters are mounted on first support group 831a. A second support group 831b is provided on the lower side of bracket plate 831, and optical fiber adapters are mounted on second support group 831b.

[0322] In some embodiments, the first support group 831a includes a first support plate 832, a second support plate 833, and a third support plate 834. The first support plate 832, the second support plate 833, and the third support plate 834 are sequentially arranged on the upper side of the end of the bracket plate 831. A gap is provided between the first support plate 832 and the second support plate 833, and a gap is provided between the second support plate 833 and the third support plate 834. The first support plate 832, the second support plate 833, and the third support plate 834 are assembled and connected to the fiber optic adapter to ensure the assembly stability between the bracket plate 831 and the fiber optic adapter.

[0323] In some embodiments, the tops of the first support plate 832 , the second support plate 833 , and the third support plate 834 may be flush.

[0324] In some embodiments, the second support group 831b includes a fourth support plate 835, a fifth support plate 836, and a sixth support plate 837. The fourth, fifth, and sixth support plates 835, 836, 837 are sequentially arranged side by side on the underside of the end of the bracket plate 831. A gap exists between the fourth and fifth support plates 835, 836, and a gap exists between the fifth and sixth support plates 836, 837. The fourth, fifth, and sixth support plates 835, 836, 837 are assembled and connected to the fiber optic adapter, ensuring the stability of the assembly between the bracket plate 831 and the fiber optic adapter.

[0325] In some embodiments, the height of the fourth support plate 835 is greater than that of the fifth support plate 836 , and the tops of the fifth support plate 836 and the sixth support plate 837 may be flush.

[0326] In some embodiments, the first support plate 832 and the fourth support plate 835 are disposed back to back, the second support plate 833 and the fifth support plate 836 are disposed back to back, and the third support plate 834 and the sixth support plate 837 are disposed back to back. The first support plate 832, the second support plate 833, and the third support plate 834 are assembled with connected fiber optic adapters, and the fourth support plate 835, the fifth support plate 836, and the sixth support plate 837 are assembled with connected fiber optic adapters, so that the fiber optic bracket 830 can fix the fiber optic adapters in layers.

[0327] In some embodiments, the first support plate 832 is provided with a first assembly port 8321, the second support plate 833 is provided with a second assembly port 8331, and the third support plate 834 is provided with a third assembly port 8341. The first assembly port 8321, the second assembly port 8331, and the third assembly port 8341 are arranged in a series to accommodate and connect optical fiber adapters. For example, multiple series of assembly ports, such as two series, may be formed on the first support plate 832, the second support plate 833, and the third support plate 834.

[0328] In some embodiments, a first retaining groove 8332 is formed on a side of the second assembly opening 8331 adjacent to the first assembly opening 8321. A fiber optic adapter is assembled and connected to the first retaining groove 8332. For example, a first retaining surface 8333 is formed on a side of the first retaining groove 8332. The first retaining surface 8333 retains the position of the fiber optic adapter, facilitating assembly and connection of the fiber optic adapter to the first retaining groove 8332.

[0329] In some embodiments, a first notch 8322 is formed on the first support plate 832 , and the first notch 8322 is located on a side of the first assembly opening 8321 . Exemplarily, the first notch 8322 can communicate with the first assembly opening 8321 .

[0330] In some embodiments, the fourth support plate 835 is provided with a fourth assembly opening 8351, and the fifth support plate 836 is provided with a second limiting groove 8361. The fourth assembly opening 8351 and the second limiting groove 8361 are arranged in a series to facilitate the assembly and connection of a fiber optic adapter. Of course, in the disclosed embodiments, multiple series of assembly openings may be provided on the fourth support plate 835, the fifth support plate 836, and the sixth support plate 837, and limiting surfaces may also be provided on the second limiting groove 8361.

[0331] In some embodiments, a second notch 8352 is formed on the fourth support plate 835 , and the second notch 8352 is located on a side of the fourth support plate 835 . The second notch 8352 may not be connected to the fourth assembly port 8351 .

[0332] In some embodiments, the fiber optic bracket 830 may include a first mounting post 8381, which is disposed on the upper side of the bracket plate 831 and lateral to the first support plate 832. The first mounting post 8381 is used to mount and connect to the housing of the optical module and may also increase the strength of the fiber optic bracket 830. For example, the first mounting post 8381 extends from the edge of the bracket plate 831 to the first support plate 832, and the height of the first mounting post 8381 may be higher than that of the first support plate 832. The left side of the first mounting post 8381 may be mounted and connected to the lower housing 202, and the top side of the first mounting post 8381 may be mounted and connected to the upper housing.

[0333] In some embodiments, the fiber optic bracket 830 may include a second mounting post 8382, which is disposed on the underside of the bracket plate 831 and on the side of the fourth support plate 835. The second mounting post 8382 is used to assemble and connect with the lower housing 202. The second mounting post 8382 may also increase the strength of the fiber optic bracket 830. For example, the second mounting post 8382 extends from the edge of the bracket plate 831 to the fourth support plate 835, and the height of the second mounting post 8382 may be lower than the height of the fourth support plate 835.

[0334] In some embodiments, a first positioning hole 8383 is provided on the second assembly column 8382 , and the first positioning hole 8383 is used for positioning and connecting the lower shell 202 .

[0335] In some embodiments, the fiber tray 830 may include a third assembly post 8384, which is located on a side of the sixth support plate 837. For example, a top of the third assembly post 8384 extends to a side of the third support plate 834.

[0336] In some embodiments, a second positioning hole 8385 is provided on the third assembly column 8384 , and the second positioning hole 8385 is used for positioning and connecting the lower shell 202 .

[0337] In some embodiments, the structure of the first support group 830a may be the same as the structure of the second support group 830b provided in the above embodiment; or, the structure of the second support group 830b may be the same as the structure of the first support group 830a provided in the above embodiment.

[0338] Figure 59 is a second cross-sectional view of another optical fiber securing component provided according to some embodiments of the present disclosure, and Figure 60 is a partial schematic view of another optical fiber securing component provided according to some embodiments of the present disclosure. In some embodiments, as shown in Figures 59 and 60, the optical fiber securing component 800 may include a first gasket 840, which is embedded in the gap between the first support plate 832 and the second support plate 833. For example, the bottom of the first gasket 840 is embedded in the gap between the first support plate 832 and the second support plate 833. The first gasket 840 is defined by a first adapter hole 841 for connecting a fiber optic adapter through the first adapter hole 841.

[0339] In some embodiments, the first gasket 840 is a strip-shaped gasket with a plurality of first adapting holes 841, such as two first adapting holes 841, defined along its length. The first gasket 840 can be a shielding gasket, interlocking the first support plate 832 and the second support plate 833. The first gasket 840 not only shields electromagnetic radiation but also reinforces the assembly of the fiber optic adapter, reducing movement of the fiber optic adapter caused by plugging and unplugging an external optical fiber.

[0340] In some embodiments, the optical fiber securing member 800 may include a second gasket 850, which is embedded in the gap between the fourth support plate 835 and the fifth support plate 836. For example, the top of the second gasket 850 is embedded in the gap between the fourth support plate 835 and the fifth support plate 836. The second gasket 850 is provided with a second adapting hole 851 for connecting a fiber optic adapter.

[0341] In some embodiments, the second gasket 850 is a strip-shaped gasket having a plurality of second fitting holes 851, such as two second fitting holes 851, defined along its length. The second gasket 850 can be a shielding gasket, interlocking the fourth support plate 835 and the fifth support plate 836. The second gasket 850 not only shields electromagnetic radiation but also strengthens the assembly of the fiber optic adapter, reducing movement of the fiber optic adapter caused by plugging and unplugging an external optical fiber.

[0342] Figure 61 is a partial schematic diagram of another lower housing according to some embodiments of the present disclosure. As shown in Figure 61 , a seventh support plate 2041, an eighth support plate 2042, and a ninth support plate 2043 are arranged side by side within the optical port of the lower housing 202. A gap exists between the seventh support plate 2041 and the eighth support plate 2042, and a gap exists between the eighth support plate 2042 and the ninth support plate 2043. The seventh support plate 2041, the eighth support plate 2042, and the ninth support plate 2043 are assembled and connected to a fiber optic adapter.

[0343] In some embodiments, the seventh support plate 2041 is provided with a seventh assembly port 2044, the eighth support plate 2042 is provided with an eighth assembly port 2045, and the ninth support plate 2043 is provided with a ninth assembly port 2046. The seventh assembly port 2044, the eighth assembly port 2045, and the ninth assembly port 2046 are arranged in a series to accommodate the connection of a fiber optic adapter. For example, the seventh support plate 2041, the eighth support plate 2042, and the ninth support plate 2043 may be provided with multiple series of assembly ports, such as two series.

[0344] In some embodiments, a partition 2047 can be disposed within the optical port of the lower housing 202. The end of the partition 2047 is connected to the seventh support plate 2041, and the top side of the end of the partition 2047 is supported and connected to the second assembly post 8382. A first positioning post 2048 is disposed on the partition 2047 and is assembled and connected to the first positioning hole 8383.

[0345] In some embodiments, a first assembly plate 2049 is formed at an edge of the seventh support plate 2041 , and the first assembly plate 2049 is assembled and connected to the second notch 8352 .

[0346] In some embodiments, a support platform 2028 is formed on the top of the bottom plate 2021 , and a second positioning column 2029 is provided on the support platform 2028 . The support platform 2028 supports and connects the third assembly column 8384 , and the second positioning column 2029 is assembled and connected to the second positioning hole 8385 .

[0347] Figure 62 is an exploded schematic diagram of the partial structure of an optical module provided according to some embodiments of the present disclosure. As shown in Figure 62, the optical fiber adapter includes an adapter body 701, which is provided with a protrusion 702. Protrusion 702 is formed by a partial outward protrusion of the side surface of adapter body 701. Protrusion 702 is provided with a second limiting surface 703, which is used for assembly and connection with the first limiting surface 8333, etc.

[0348] The first gasket 840 is sleeved on the two optical fiber adapters, and the second gasket 850 is sleeved on the two optical fiber adapters. The side surfaces of the first gasket 840 and the second gasket 850 contact and connect the side surfaces of the protrusions 702 on the corresponding optical fiber adapters.

[0349] Figure 63 is a cross-sectional view of an optical module according to some embodiments of the present disclosure, and Figure 64 is a partial enlarged view of point A in Figure 63 . In some embodiments, as shown in Figures 63 and 64 , a first extruded plate 2013, a second extruded plate 2014, and a third extruded plate 2015 are arranged side by side within the optical port of the upper cover 2011. A space is provided between the first extruded plate 2013 and the second extruded plate 2014, and a space is provided between the second extruded plate 2014 and the third extruded plate 2015. The first extruded plate 2013, the second extruded plate 2014, and the third extruded plate 2015 are assembled to connect to a fiber optic adapter.

[0350] In some embodiments, multiple strings of mounting ports may be formed on the first extrusion plate 2013, the second extrusion plate 2014, and the third extrusion plate 2015. These strings of mounting ports are used to mount and connect fiber optic adapters. The structure of the mounting ports on the first extrusion plate 2013 and other similar boards can refer to the structure of the mounting ports on the seventh support plate 2041 and other similar boards.

[0351] The first gasket 840 and the second gasket 850, which are assembled and connected to the optical fiber adapters, are respectively assembled and connected to the optical fiber bracket 830. The optical fiber bracket 830 is assembled and connected to the lower housing 202, which then covers the upper housing 201, thereby securely connecting the upper housing 201 and the lower housing 202. The first gasket 840, the second gasket 850, and the optical fiber bracket 830 mutually press the optical fiber adapters to secure the multiple optical fiber adapters to the optical ports of the optical module. The optical fiber adapters are securely fixed, and are not likely to become loose when inserting and removing external optical fibers. The first gasket 840, the second gasket 850, and the optical fiber bracket 830 mutually press the optical fiber bracket 830 to secure the optical fiber bracket 830 to the optical port of the optical module, simplifying the assembly of the optical fiber bracket 830 and, in turn, the secure assembly of the optical fiber adapters.

[0352] Figure 65 is a schematic diagram of the partial structure of another optical module provided according to some embodiments of the present disclosure. In some embodiments, as shown in Figure 65, the optical transmission assembly 700 may include a fifth fiber optic adapter 740, which connects the first optical fiber 711, the second optical fiber 721, and the third optical fiber 731, thereby coupling an external optical fiber to the first optical fiber 711 through the fifth fiber optic adapter 740. Exemplarily, the ends of the first optical fiber 711, the second optical fiber 721, and the third optical fiber 731 are connected to the fifth fiber optic adapter 740 in a sequentially parallel manner, i.e., the width direction of the fifth fiber optic adapter 740 is arranged along the width direction of the optical module.

[0353] In some embodiments, the fifth optical fiber adapter 740 is disposed laterally at the optical port of the optical module.

[0354] FIG66 is a second schematic diagram of a partial structure of another optical module provided according to some embodiments of the present disclosure. In some embodiments, as shown in FIG66 , the optical transmission assembly 700 may include a sixth fiber optic adapter 750 and a seventh fiber optic adapter 760. The sixth fiber optic adapter 750 connects a portion of the first optical fiber 711 to the second optical fiber 721, thereby coupling an external optical fiber to the second optical fiber 721 through the sixth fiber optic adapter 750, and so on. The seventh fiber optic adapter 760 connects a portion of the first optical fiber 711 to the third optical fiber 731, thereby coupling an external optical fiber to the third optical fiber 731 through the seventh fiber optic adapter 760, and so on.

[0355] In some embodiments, the sixth fiber optic adapter 750 and the seventh fiber optic adapter 760 are arranged side by side at the optical port of the optical module. For example, the sixth fiber optic adapter 750 and the seventh fiber optic adapter 760 are arranged vertically to the optical port of the optical module, that is, the width direction of the sixth fiber optic adapter 750 and the seventh fiber optic adapter 760 are arranged along the height direction of the optical module.

[0356] In some embodiments, the optical fiber fixing component 800 may include a third gasket 860. The third gasket 860 is mounted on the tail end of the fifth optical fiber adapter 740, the sixth optical fiber adapter 750, or the seventh optical fiber adapter 760 and fixedly connects to the housing of the optical module. The third gasket 860 may be a shielding gasket to shield electromagnetic radiation.

[0357] In some embodiments, corresponding gasket mounting grooves are provided on the upper housing 201 and the lower housing 202. When the upper housing 201 and the lower housing 202 are closed, the corresponding gasket mounting grooves form a gasket receiving cavity, into which the third gasket 860 is assembled. Exemplarily, the third gasket 860 is fitted into the gasket mounting groove to provide electromagnetic shielding for the optical module's optical port. The third gasket 860 is made of conductive rubber and is sealed to the upper housing 201 and the lower housing 202.

[0358] Figure 67 is an exploded schematic diagram of a fifth fiber optic adapter provided according to some embodiments of the present disclosure. In some embodiments, the fifth fiber optic adapter 740 includes a clamping claw 741 and a fiber optic plug 742. Clamping claw 741 has a through-hole formed therein. Fiber optic plug 742 is inserted into one end of the through-hole, and the end of a first optical fiber 711 or the like is inserted into fiber optic plug 742. An external optical fiber is inserted into the other end of the through-hole and optically coupled to the first optical fiber 711 or the like.

[0359] In some embodiments, the fifth fiber optic adapter 740 may include a fiber optic connector 745 , the fiber optic ribbon in the optical module is inserted into the fiber optic connector 745 , and the fiber optic connector 745 is inserted into the fiber optic plug 742 to achieve coupling connection between the fiber optic ribbon and the fiber optic plug 742 through the fiber optic connector 745 .

[0360] In some embodiments, the fifth fiber optic adapter 740 may include a fixing member 743 and a pin 744. One end of the fixing member 743 contacts the end surface of the fiber optic plug 742, and the other end of the fixing member 743 is engaged and fixed with the claw 741, so that the fixing member 743 secures the fiber optic plug 742 within the claw 741. This fixing member 743 and pin 744 facilitate the insertion of the fiber optic plug 742 into the claw 741 and the positioning and connection of the external optical fiber to the fiber optic plug 742.

[0361] In some embodiments, a second elastic clip 7413 is provided at one end of the claw 741 facing the circuit board 300, and the second elastic clip 7413 extends from the right side 7412 of the claw 741 toward the direction of the circuit board 300. The second elastic clip 7413 is fixedly connected to the right side 7412, and the through hole 7411 passes through the right side 7412, so that the optical fiber plug 742 can be inserted into the claw 741 through the through hole 7411, and the optical fiber plug 742 is limited in the left and right directions by the right side 7412.

[0362] In some embodiments, the second elastic clip 7413 can rotate within a preset angle range, so that the second elastic clip 743 can be clamped inward to fix the optical fiber plug 742, and can also be bent outward to remove the optical fiber plug 742.

[0363] In some embodiments, the optical fiber plug 742 includes a core and a fixing portion, and the outer wall of the fixing portion protrudes from the outer wall of the core. When the optical fiber plug 742 is inserted into the through hole 7411 of the claw 741, the core is inserted into the through hole 7411, and the right side 7412 of the claw 741 abuts against the connecting surface of the core and the fixing portion to limit the optical fiber plug 742 so that the fixing portion is located outside the through hole 7411.

[0364] The right side of the fixing part contacts the left side of the fixing piece 743, that is, the core of the optical fiber plug 742 is inserted into the claw 741, and the fixing piece 743 is abutted against the right side of the fixing part, and the right end face of the fixing piece 743 is pressed against by the second elastic buckle 7413 to apply force to the fixing piece 743 and the optical fiber plug 742, so that the optical fiber plug 742 and the fixing piece 743 are fixed in the claw 741.

[0365] Figure 68 is a schematic diagram of a fixing member according to some embodiments of the present disclosure. In some embodiments, as shown in Figure 68 , a fixing member 743 is formed with a clearance hole 7433 , through which a fiber optic connector 745 is inserted into a fiber optic plug 742 to connect the fiber optic ribbon to the fiber optic plug 742 .

[0366] In some embodiments, a pinhole is formed on the optical fiber plug 742, and the pinhole passes through the left and right sides of the optical fiber plug 742; a plurality of sockets are formed on the fixing member 743, each socket includes a first socket 7431 and a second socket 7432, the first socket 7431 is connected to the second socket 7432, and the diameter of the first socket 7431 is larger than the diameter of the second socket 7432.

[0367] Figure 69 is a schematic diagram of the structure of an insertion pin provided according to some embodiments of the present disclosure. In some embodiments, as shown in Figure 69, the insertion pin 744 includes an insertion portion 7441, a connecting portion 7442, and an exposed portion 7443. The exposed portion 7443 is connected to the insertion portion 7441 via the connecting portion 7442. The diameter of the exposed portion 7443 is greater than or equal to the diameter of the insertion portion 7441, and the diameter of the insertion portion 7441 is greater than the diameter of the connecting portion 7442.

[0368] The diameter of the first insertion hole 7301 is greater than or equal to the diameter of the insertion part 7441 , the diameter of the second insertion hole 7302 is smaller than the diameter of the insertion part 7441 , and the diameter of the second insertion hole 7302 is greater than or equal to the diameter of the connection part 7442 .

[0369] In some embodiments, to facilitate the removal of the pin 744, the diameter of the exposed portion 7443 can be larger than the diameter of the first insertion hole 7431. Thus, when the pin 744 is inserted into the pinhole of the optical fiber plug 742 through the first insertion hole 7431, the exposed portion 7443 is exposed outside the fixing member 743, and the insertion portion 7441 is inserted into the pinhole through the first insertion hole 7431. At this time, the pin 744 can move left and right within the pinhole and the first insertion hole 7431. The fixing member 743 is then moved to snap the connecting portion 7442 into the second insertion hole 7432. At this time, the pin 744 cannot move left and right within the second insertion hole 7432, thereby securing the pin 744 to the fixing member 743.

[0370] In some embodiments, the fiber optic plug 742 may be an MT male connector, and the plug of the external optical fiber is a corresponding MT female connector, that is, after the pin 744 is fixed to the fiber optic plug 742, the end of the pin 744 facing away from the exposed portion 7443 protrudes from the fiber optic plug 742. In this way, when the external optical fiber is inserted into the claw 741, the protruding pin 744 is inserted into the jack of the external optical fiber to achieve the positioning connection between the fiber optic plug 742 and the external optical fiber.

[0371] In some embodiments, the structures of the sixth fiber optic adapter 750 and the seventh fiber optic adapter 760 are the same as or similar to the structure of the fifth fiber optic adapter 740. The structures of the sixth fiber optic adapter 750 and the seventh fiber optic adapter 760 can refer to the structure of the fifth fiber optic adapter 740 disclosed in the above embodiment.

[0372] Figure 70 is an exploded schematic diagram of an upper housing and a lower housing provided according to some embodiments of the present disclosure. In some embodiments, as shown in Figure 70, the electrical port end of the upper housing 201 is provided with a first connecting boss 2031. The first connecting boss 2031 extends from the inner side of the upper cover 2011 toward the circuit board 300. A first connecting groove 2032 is formed on the first connecting boss 2031, and an opening is formed on the left side of the first connecting groove 2032. The electrical port end of the lower housing 202 is provided with a second connecting boss 2033. The second connecting boss 2033 extends from the inner side of the bottom plate 2021 toward the circuit board 300. A second connecting groove 2034 is formed on the second connecting boss 2033, and an opening is formed on the left side of the second connecting groove 2034.

[0373] In some embodiments, a plurality of assembly grooves are correspondingly provided at the optical port end of the upper housing 201 and the optical port end of the lower housing 202 so as to fix the fifth optical fiber adapter 740 and the like at the optical port of the optical module through the assembly grooves.

[0374] Figure 71 is a partial cross-sectional view of an optical module provided according to some embodiments of the present disclosure. As shown in Figure 71, a first shielding strip 205 is provided on the front of the circuit board 300. The first shielding strip 205 is arranged along the width direction of the circuit board 300 and is located between the gold finger 301 and the light emitting component 400. A second shielding strip 206 is provided on the back of the circuit board 300. The second shielding strip 206 is arranged along the width direction of the circuit board 300 and is located between the gold finger 301 and the light receiving component.

[0375] When the circuit board 300 is installed in the lower housing 202, the second shielding strip 206 is embedded in the second connecting groove 2034, thereby achieving a sealed assembly between the lower housing 202 and the circuit board 300 at the electrical port. When the upper housing 201 is placed on the lower housing 202, the first shielding strip 205 is embedded in the first connecting groove 2032, thereby achieving a sealed assembly between the upper housing 201 and the circuit board 300 at the electrical port. The first shielding strip 205 and the second shielding strip 206 on the circuit board 300 improve the EMI shielding effect at the electrical port of the optical module. However, electromagnetic waves within the optical module can escape through the optical port of the optical module, affecting the EMI shielding effect of the optical module.

[0376] FIG72 is a partial schematic diagram of another optical module according to some embodiments of the present disclosure. In some embodiments, as shown in FIG72 , a wire harness 380 is provided in the optical module 200 , and the wire harness 380 is used to harness the second optical fiber 721 and the third optical fiber 731 .

[0377] In some embodiments, the wiring harness 380 is connected to the circuit board 300 , and the wiring harness 380 binds the second optical fiber 721 to one side of the transmitting base 410 and binds the third optical fiber 731 to the other side of the transmitting base 410 .

[0378] Figure 73 is a schematic diagram of the structure of a cable tie provided according to some embodiments of the present disclosure, and Figure 74 is a schematic diagram of the assembly of a cable tie and a circuit board provided according to some embodiments of the present disclosure. In some embodiments, as shown in Figures 73 and 74, the cable tie 380 includes a bridging plate 381, a first support arm 382, ​​and a second support arm 383. The two ends of the bridging plate 381 are respectively connected to the first support arm 382 and the second support arm 383. The bridging plate 381 is located below the circuit board 300. The top surfaces of the first support arm 382 and the second support arm 383 are bonded to the back surface of the circuit board 300 to secure the cable tie 380 to the back surface of the circuit board 300.

[0379] In some embodiments, a support plate 384 is formed on the bridging plate 381, and the support plate 384 extends from the top surface of the bridging plate 381 toward the front direction of the circuit board 300, and the support plate 384 is located between the first support arm 382 and the second support arm 383; a first limiting arm 385 and a second limiting arm 386 are formed on the support plate 384, and the two ends of the support plate 384 are respectively connected to the first limiting arm 385 and the second limiting arm 386, and the first limiting arm 385 and the second limiting arm 386 extend from the support plate 384 toward the upper shell 201, and the distance between the first limiting arm 385 and the second limiting arm 386 is smaller than the distance between the first support arm 382 and the second support arm 383, so that there is a gap between the first limiting arm 385 and the first support arm 382, ​​and there is a gap between the second limiting arm 386 and the second support arm 383. The support plate 384 can strengthen the connection between the first limiting arm 385 and the second limiting arm 386 and the bridging plate 381 respectively. The support plate 384 can also limit and support the first optical fiber 711, reduce the bending angle of the first optical fiber 711, and thus effectively avoid damage to the first optical fiber 711 caused by excessive bending.

[0380] The support plate 384 , the first limiting arm 385 and the second limiting arm 386 are embedded in the mounting hole 302 , and the optical fiber connected to the light emitting component 400 is placed on the support plate 384 , and the optical fiber is supported by the support plate 384 .

[0381] The first limiting arm 385 abuts against the front side wall of the mounting hole 302, and the second limiting arm 386 abuts against the rear side wall of the mounting hole 302. The first limiting arm 385 and the second limiting arm 386 limit and restrain the second optical fiber 721 and the third optical fiber 731. The first limiting arm 385 and the second limiting arm 386 limit the second optical fiber 721 and the third optical fiber 731 in the front, back, left and right directions to protect the second optical fiber 721 and the third optical fiber 731 and reduce the risk of the second optical fiber 721 and the third optical fiber 731 being bent or squeezed.

[0382] In some embodiments, a first hook 387 is formed on the top surface of the first limiting arm 385, and the first hook 387 protrudes toward the first support arm 382. A second hook 388 is formed on the top surface of the second limiting arm 386, and the second hook 388 protrudes toward the second support arm 383. When the cable tie 380 is inserted into the mounting hole 302 from bottom to top, the first hook 387 and the second hook 388 engage with the front surface of the circuit board 300 to limit the vertical position of the cable tie 380.

[0383] Figure 75 is a schematic diagram of the structure of an upper housing according to some embodiments of the present disclosure, and Figure 76 is an exploded schematic diagram of an upper housing according to some embodiments of the present disclosure. In some embodiments, as shown in Figures 75 and 76, a heat sink 207 is provided on the top of the upper housing 201. Heat sink 207 increases the heat dissipation area of ​​the upper cover 2011.

[0384] In some embodiments, the heat dissipation component 207 includes heat dissipation fins 2072 and a heat dissipation cover plate 2071. The heat dissipation fins 2072 are connected to the heat dissipation cover plate 2071, and the bottom of the heat dissipation fins 2072 is welded to the top of the upper housing 201. The heat dissipation fins 2072 are long, ridge-shaped protrusions formed on the bottom surface of the heat dissipation cover plate 2071. Exemplarily, the heat dissipation component 207 includes multiple heat dissipation fins 2072. The heat dissipation fins 2072 extend along the length of the upper housing 201 and, together with the heat dissipation cover plate 2071, form multiple heat dissipation channels. The heat dissipation channels are open at both ends to allow air to flow in and out of the heat dissipation channels.

[0385] In some embodiments, the heat sink fins 2072 and the heat sink cover 2071 can be integrally formed, while the heat sink fins 2072 and the upper housing 201 are not integrally formed. This allows the heat sink 207 to effectively improve the heat dissipation of the upper housing 201, facilitates the production of the heat sink 207, and ensures a flat top surface for the optical module. The bottom of the heat sink fins 2072 is connected to the top of the upper housing 201, and the heat sink cover 2071 is disposed on top of the heat sink fins 2072. This arrangement of heat sink fins on the top of the upper housing 201 not only increases the heat dissipation area at the top of the upper housing 201, but also forms a heat dissipation channel that defines the direction of airflow, resulting in higher heat dissipation efficiency for the upper housing 201. Of course, in the disclosed embodiments, the heat sink fins 2072 can be integrally formed with the upper housing 201.

[0386] In some embodiments, the heat dissipation fins 2072 are straight fins, extending from one end of the heat dissipation cover plate 2071 to the other end of the heat dissipation cover plate 2071. Exemplarily, the length of the heat dissipation cover plate 2071 is greater than half the total length of the upper housing 201. Of course, in some embodiments of the present disclosure, the length of the heat dissipation cover plate 2071 is less than or equal to half the total length of the upper housing 201.

[0387] In some embodiments, a first limiting plate 2017 is provided on one side of the top of the upper housing 201, and the first limiting plate 2017 is connected to the heat dissipation component 207 in a limiting manner. For example, the first limiting plate 2017 is connected to one side of the heat dissipation cover plate 2071 in a limiting manner.

[0388] In some embodiments, a second limiting plate 2018 is provided on the other side of the top of the upper housing 201, and the second limiting plate 2018 is limitedly connected to the heat dissipation component 207. Exemplarily, the second limiting plate 2018 is limitedly connected to the other side of the heat dissipation cover plate 2071.

[0389] In some embodiments, the upper housing 201 may include an inclined plate 2016 located at the optical port end of the upper housing 201 and connected to the upper cover 2011. The inclined plate 2016 is tilted toward the lower housing 202, with one end of the inclined plate 2016 being higher than the other end. The inclined plate 2016 can adjust the height of various locations at the optical port end of the upper housing 201 and can also guide air flow, ensuring more efficient airflow to the heat sink 207.

[0390] In some embodiments, the other end of the inclined plate 2016 extends to the channel opening of the heat dissipation channel on the heat dissipation component 207 , and the top surface of the inclined plate 2016 is inclined to allow air to flow into the heat dissipation channel of the heat dissipation component 207 more effectively.

[0391] In some embodiments, the bottom of one end of the first limiting plate 2017 is connected to one side of the inclined plate 2016, and the bottom of one end of the second limiting plate 2018 is connected to the other side of the inclined plate 2016. Therefore, the first limiting plate 2017 and the second limiting plate 2018 can form a guide channel at the inclined plate 2016 to guide air flow, so that the air flow can flow along the top surface of the inclined plate 2016 to the heat dissipation channel of the heat dissipation component 207.

[0392] FIG77 is an exploded schematic diagram of another upper housing according to some embodiments of the present disclosure. In some embodiments, as shown in FIG77 , the heat dissipation component 207 may include a heat dissipation base plate 2073 , and the heat dissipation base plate 2073 is connected to the heat dissipation fins 2072 .

[0393] In some embodiments, a welding protrusion 2019 is provided on the top of the upper cover plate 2011, and the welding protrusion 2019 is welded to the heat dissipation base plate 2073. For example, the welding protrusion 2019 forms a "field" pattern.

[0394] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present disclosure.

Claims

1. An optical module, comprising: a circuit board having mounting holes formed thereon; A light emitting component is embedded in the mounting hole; The light emitting component comprises: A launching base, embedded and connected to the mounting hole; An optical emitting assembly is arranged on the emitting base, the optical emitting assembly is connected to the surface of the circuit board by wire bonding, and is used to generate 2N optical signals, where N≥1; A collimating lens group is arranged on the emitting base and is located on the output light path of the light emitting assembly; A first light receiving component is arranged on the circuit board and is used to receive N optical signals; the first light receiving component is connected to the surface of the circuit board; A second light receiving component is arranged on the circuit board and is used to receive N optical signals; the first light receiving component is connected to the surface of the circuit board; The optical transmission component includes a second optical fiber and a third optical fiber; the second optical fiber is connected to the first optical receiving component, and the second optical fiber passes through the side of the transmitting base; the third optical fiber is connected to the second optical receiving component, and the second optical fiber passes through the side of the transmitting base.

2. The optical module according to claim 1, wherein: A first mounting surface is formed on the top of the launch base, a first baffle plate and a second baffle plate are formed on the first mounting surface, and a second mounting surface is formed between the first baffle plate and the second baffle plate; The first mounting surface is connected to the back side of the circuit board, and the first baffle and the second baffle are limitedly connected to the mounting hole; a combiner group or a third optical fiber fixing head is arranged on the second mounting surface, and the first baffle or the second baffle is phase-connected to the combiner group or the third optical fiber fixing head; The light emitting component further comprises an emitting cover plate, the bottom of which is connected to the front side of the circuit board, and the first baffle plate and the second baffle plate are connected to the emitting cover plate in phase.

3. The optical module according to claim 1, wherein: The optical emitting component includes a third optical fiber connector, the optical transmission assembly also includes a first optical fiber, and the third optical fiber connector is fixedly connected to the end of the first optical fiber; A second mounting surface is formed on the transmitting base, a plurality of second supporting platforms are arranged on the second mounting surface, adjacent second supporting platforms are spaced apart, and the second supporting platforms support and connect the bottom of the third optical fiber connector; A first support platform is arranged on the second mounting surface, a first limiting column and a second limiting column are arranged on the edge of the first support platform, and the first limiting column and the second limiting column limit the light output end of the third optical fiber connector.

4. The optical module according to claim 2, wherein: The combiner group includes a first combiner and a second combiner, and the first combiner and the second combiner are arranged side by side on the second mounting surface; The optical transmission component further includes a first optical fiber, and the optical emitting component further includes a first optical fiber fixing head and a second optical fiber fixing head, wherein the first optical fiber fixing head and the second optical fiber fixing head are respectively connected to the first optical fiber; A mounting platform is formed at one end of the first mounting surface; an edge of the mounting platform forms a third mounting surface; the third mounting surface is fixedly connected to the first optical fiber fixing head and the second optical fiber fixing head, one side of the mounting platform is limitedly connected to the first optical fiber fixing head, and the other side of the mounting platform is limitedly connected to the second optical fiber fixing head; or, A first through hole and a second through hole are formed on the mounting platform, the first optical fiber fixing head is inserted into the first through hole, and the second optical fiber fixing head is inserted into the second through hole; the first optical fiber fixing head is located on the output optical path of the first combiner, and the second optical fiber fixing head is located on the output optical path of the second combiner.

5. The optical module according to claim 3, wherein: The optical emitting component further comprises an isolator group, the isolator group comprises a first isolator bracket, a second isolator bracket and a plurality of isolators; the first isolator bracket supports and connects a plurality of isolators, and the second isolator bracket supports and connects a plurality of isolators; The first support platform supports and connects the first isolator bracket and the second isolator bracket, the first limiting column is limitatively connected to the first isolator bracket, and the second limiting column is limitatively connected to the second isolator bracket.

6. The optical module according to claim 1, further comprising a wire harness, wherein the wire harness comprises a bridging plate, a first support arm, a second support arm, a first limiting arm, and a second limiting arm; One end of the first support arm is connected to one end of the bridge plate, one end of the second support arm is connected to the other end of the bridge plate, and the other end of the first support arm and the other end of the second support arm are connected to the circuit board; The first limiting arm and the second limiting arm are located at the first supporting arm and the second supporting arm, and the first limiting arm and the second limiting arm are deeply inserted into the mounting hole; The second optical fiber passes through a space between the first limiting arm and the first supporting arm, and the third optical fiber passes through a space between the second limiting arm and the second supporting arm.

7. The optical module according to claim 1, wherein: The first light receiving component comprises: a receiving fixed head and a detector group, the detector group is arranged on the circuit board, and the receiving fixed head is connected to the circuit board; The receiving fixing head includes a fiber optic supporting portion and a fiber optic fixing portion; the end portion of the second optical fiber extends from one end of the fiber optic supporting portion to the other end of the fiber optic supporting portion, and the fiber optic fixing portion covers and connects the fiber optic supporting portion to fix the second optical fiber through the fiber optic supporting portion and the fiber optic fixing portion.

8. The optical module according to claim 3, further comprising an upper housing, a lower housing and an optical fiber fixing component, and the optical transmission assembly further comprises a first optical fiber adapter, a second optical fiber adapter, a third optical fiber adapter and a fourth optical fiber adapter; The first optical fiber adapter and the second optical fiber adapter are respectively connected to the first optical fiber, the third optical fiber adapter is connected to the second optical fiber, and the fourth optical fiber adapter is connected to the third optical fiber; The optical fiber fixing component comprises an optical fiber bracket, a first gasket and a second gasket, and the optical fiber bracket is assembled and connected to the first optical fiber adapter, the second optical fiber adapter, the third optical fiber adapter and the fourth optical fiber adapter in layers; The first gasket is sleeved on the second fiber optic adapter and the third fiber optic adapter, and the second gasket is sleeved on the first fiber optic adapter and the fourth fiber optic adapter; the upper shell and the lower shell squeeze the fiber optic bracket, the first gasket and the second gasket to fix the third fiber optic adapter and the fourth fiber optic adapter.

9. The optical module according to claim 3, further comprising a lower housing and an optical fiber fixing component, wherein a card seat is formed at one end of the lower housing, and a plurality of plug holes are arranged on the card seat; the optical transmission component further comprises a first optical fiber adapter, a second optical fiber adapter, a third optical fiber adapter and a fourth optical fiber adapter; the front ends of the first optical fiber adapter, the second optical fiber adapter, the third optical fiber adapter and the fourth optical fiber adapter are inserted into the corresponding plug holes; The optical fiber fixing component includes an optical fiber fixing frame and a gasket; the optical fiber fixing frame is located on the side of the card seat, and the optical fiber fixing frame supports and connects the first optical fiber adapter, the second optical fiber adapter, the third optical fiber adapter and the fourth optical fiber adapter; The optical fiber fixing frame cooperates with the card holder and the gasket to fix the third optical fiber adapter and the fourth optical fiber adapter.

10. The optical module according to claim 9, wherein: The optical fiber fixing frame comprises: A fixing plate fixedly connected to the lower shell; a first assembly hole is formed on the fixing plate, and a slit is formed on the edge of the fixing plate, the slit is connected to the first assembly hole; the optical fiber passes through the slit so that the optical fiber adapter is assembled and connected to the first assembly hole, so as to fix and support the optical fiber adapter through the first assembly hole; A connecting plate, located at the bottom of the fixing plate, and assembled and connected to the lower shell; A first fixing arm connected to one side of the fixing plate and assembled to connect to the lower side plate of the lower shell; The second fixing arm is connected to the other side of the fixing plate and is assembled and connected to the lower side plate of the lower shell.

11. The optical module according to claim 2, wherein: A second connection layer is arranged on the back side of the circuit board, and the second connection is located at the edge of the mounting hole; a first groove is arranged on the second connection layer, and the first groove separates the second connection layer; and the first mounting surface is fixedly connected to the second connection layer.

12. The optical module according to claim 5, wherein: A third connection layer is disposed on the circuit board below the first light receiving component, the third connection layer includes a welding portion, the welding portion is located on a side of the third connection layer away from the mounting hole, and the first light receiving component includes a detector group, the detector group is disposed on the welding portion; A blocking groove is formed on the third connection layer, and the blocking groove is located at the edge of the welding part; The blocking groove extends from the edge of the welding portion in a direction away from the third connection layer and away from the welding portion.

13. The optical module according to claim 1 further includes an upper shell, on which a heat dissipation component is arranged; the heat dissipation component includes heat dissipation fins and a heat dissipation cover plate, the heat dissipation fins extend along the length direction of the upper shell, the top of the heat dissipation fins is connected to the heat dissipation cover plate, and the heat dissipation fins and the heat dissipation cover plate form a heat dissipation channel.

14. The optical module according to claim 8, wherein the optical fiber bracket comprises: A bracket plate, arranged transversely in the optical port of the optical module; A first support group is arranged on the upper side of the end of the bracket plate; the first support group includes support plates arranged side by side in sequence, with intervals between adjacent support plates; the first support group is assembled and connected to the second optical fiber adapter and the third optical fiber adapter; A second support group is arranged at the lower side of the end of the bracket plate; the second support group includes support plates arranged side by side in sequence, and there is a gap between adjacent support plates; the second support group is assembled and connected to the first optical fiber adapter and the fourth optical fiber adapter; The first gasket is assembled and connected to the first support group, and the second gasket is assembled and connected to the second support group.

15. The optical module according to claim 14, wherein the optical fiber bracket further comprises: A first assembly column, disposed on the upper side of the bracket plate, extending from one end of the bracket plate to the side of the first support group; A second assembly column, disposed on the lower side of the bracket plate, extending from one end of the bracket plate to the side of the second support group; The third assembly column is located at the side of the second support group and the top thereof extends to the upper side of the bracket plate.

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