Optical module

Abstract

The invention provides an optical module which comprises a lower shell, an upper shell covering the lower shell, a circuit board, a first light emitting component and a second light emitting component which are electrically connected with the circuit board, and an optical connecting component installed on the circuit board, and a cavity formed by the upper shell and the lower shell is only provided with an opening; each of the first light emitting component and the second light emitting component comprises an emitting shell covering the circuit board, a light emitting assembly mounted on the emitting shell and a flexible circuit board connected with the emitting shell, the flexible circuit board is electrically connected with the circuit board, and the light emitting assembly is electrically connected with the flexible circuit board; the optical connecting part and the golden finger on the circuit board are located in the opening, the optical connecting part comprises a connector clip and an insertion core assembly fixed with the connector clip in an inserted mode, and the first light emitting part and the second light emitting part are connected with the insertion core assembly through the first optical fiber ribbon and the second optical fiber ribbon respectively. According to the optical module, the optical connection part and the golden finger are arranged on the same side, so that the electric port and the optical port of the optical module are synchronously connected with the upper computer, and the coupling precision of the optical port is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of optical communication technology, and in particular to an optical module. Background Art

[0002] Optical communication technology is used in new services and application modes such as cloud computing, mobile Internet, and video. In optical communication, the optical module is a device that realizes the conversion of optical and electrical signals and is one of the key components in optical communication equipment.

[0003] One end of a traditional optical module is connected to an external optical fiber as an optical port, and the other end is connected to a host computer as an electrical port. In the communication docking system, the optical signal has much higher requirements on coupling accuracy than the electrical signal. During the plugging and unplugging of traditional optical modules, the electrical port is first connected to the host computer, and then the optical port is connected to the external optical fiber for a second time, which makes the docking process of the optical module complicated and affects the coupling accuracy of the optical port of the optical module. Summary of the invention

[0004] The embodiments of the present disclosure provide an optical module to solve the problem of low optical port coupling accuracy of the optical module.

[0005] The present disclosure provides an optical module, comprising:

[0006] Lower housing;

[0007] An upper shell, covering the lower shell, the upper shell and the lower shell forming a cavity, the cavity having only one opening;

[0008] A circuit board is located in the cavity, and a gold finger is formed at one end of the circuit board;

[0009] A first light emitting component is electrically connected to the circuit board, and the first light emitting component includes:

[0010] A first transmitting housing, which is covered on the circuit board;

[0011] A first light emitting assembly is installed in the first emitting housing, and the first light emitting assembly is used to generate an optical signal;

[0012] A first flexible circuit board, one end of which is fixed to the first transmitting housing, the other end of which is electrically connected to the circuit board, and the first optical transmitting assembly is connected to the first flexible circuit board by wire bonding;

[0013] A second light emitting component is electrically connected to the circuit board, and the second light emitting component includes:

[0014] A second transmitting housing is covered on the circuit board;

[0015] A second optical emission component is installed in the second emission housing, and the second optical emission component is used to generate an optical signal;

[0016] A second flexible circuit board, one end of which is fixed to the second transmitting housing, the other end of which is electrically connected to the circuit board, and the second optical transmitting assembly is connected to the second flexible circuit board by wire bonding;

[0017] An optical connection component is mounted on the circuit board, the optical connection component and the gold finger are located in the opening; the optical connection component is connected to the first optical emission component through a first optical fiber ribbon, the optical connection component is connected to the second optical emission component through a second optical fiber ribbon, and the first optical fiber ribbon passes through both sides of the second optical emission component and is connected to the optical connection component; wherein the optical connection component includes:

[0018] A connector having an escape gap formed thereon, wherein the first optical fiber ribbon and the second optical fiber ribbon pass through the escape gap;

[0019] The ferrule assembly is plugged and fixed with the connector, and the first optical fiber ribbon is connected with the second optical fiber ribbon and the ferrule assembly.

[0020] It can be seen from the above embodiments that the optical module provided by the embodiments of the present disclosure includes an upper shell, a lower shell, a circuit board, a first light emitting component, a second light emitting component and an optical connecting component. The upper shell covers the lower shell, and the upper shell and the lower shell form a cavity. The cavity has only one opening, so that the optical port and the electrical port of the optical module share one opening; the first light emitting component is electrically connected to the circuit board, the first light emitting component includes a first emission shell, a first light emitting assembly and a first flexible circuit board, the first emission shell is covered on the circuit board, and the first light emitting assembly is installed in the first emission shell, so that the first light emitting assembly can be installed above the circuit board through the first emission shell; the first flexible One end of the first flexible circuit board is fixed on the first transmitting shell, the other end of the first flexible circuit board is electrically connected to the circuit board, the first optical transmitting component is connected to the first flexible circuit board by wire bonding, and because the first flexible circuit board is elastic, the first optical transmitting component and the circuit board can be electrically connected through the first flexible circuit board, so that the first optical transmitting component receives the electrical signal transmitted by the circuit board, so that the first optical transmitting component generates an optical signal; the second optical transmitting component is electrically connected to the circuit board, the second optical transmitting component includes a second transmitting shell, a second optical transmitting component and a second flexible circuit board, the second transmitting shell cover is arranged on the circuit board, and the second optical transmitting component is installed in the second transmitting shell to pass The second optical emission component is installed above the circuit board through the second emission shell; one end of the second flexible circuit board is fixed on the second emission shell, the other end of the second flexible circuit board is electrically connected to the circuit board, and the second optical emission component is connected to the second flexible circuit board by wire bonding. Since the second flexible circuit board is elastic, the electrical connection between the second optical emission component and the circuit board can be achieved through the second flexible circuit board, so that the second optical emission component receives the electrical signal transmitted by the circuit board, so that the second optical emission component generates an optical signal; a gold finger is formed at one end of the circuit board, and the optical connection component is installed on the circuit board. The optical connection component and the gold finger are located in the opening, so that the electrical port and the optical port of the optical module are shared. The same opening, when the gold finger is docked and connected to the host computer, the optical connection component is coupled and connected to the host computer, so that the optical port coupling process of the optical module is simple; the optical connection component includes a connector and a core assembly, the core assembly and the connector are plugged and fixed, so that the core assembly is fixed by the connector, the first light emitting component is connected to the core assembly through the first optical fiber ribbon, and the second light emitting component is connected to the core assembly through the second optical fiber ribbon; an avoidance gap is formed on the connector, the first optical fiber ribbon and the second optical fiber ribbon pass through the avoidance gap and are connected to the core assembly, so that the optical signal emitted by the optical emission component is transmitted to the optical connection component through the optical fiber ribbon, and the optical signal is transmitted to the host computer through the optical connection component.

[0021] The optical module provided by the present invention has only one opening, and the optical connection component and the gold finger on the circuit board are arranged in the same opening, which can realize the synchronous connection of the electrical port, the optical port of the optical module and the host computer, and there is no need to couple the optical port with the external optical fiber separately, thereby improving the coupling accuracy of the optical port of the optical module. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not intended to limit the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0023] Figure 1 A partial structural diagram of an optical communication system provided according to some embodiments of the present disclosure;

[0024] Figure 2 A partial structural diagram of a host computer provided according to some embodiments of the present disclosure;

[0025] Figure 3 A structural diagram of an optical module provided according to some embodiments of the present disclosure;

[0026] Figure 4 An exploded view of an optical module provided according to some embodiments of the present disclosure;

[0027] Figure 5 A partial structural diagram of an optical module provided according to some embodiments of the present disclosure;

[0028] Figure 6 A partial exploded view of an optical module provided according to some embodiments of the present disclosure;

[0029] Figure 7 A structural diagram of a circuit board in an optical module provided according to some embodiments of the present disclosure;

[0030] Figure 8 A flip structure diagram of a first light emitting component in an optical module provided according to some embodiments of the present disclosure;

[0031] Fig. 9 A partial flip structure diagram of a first light emitting component in an optical module provided according to some embodiments of the present disclosure;

[0032] Fig.10 A structural diagram of a first emitting housing in an optical module provided according to some embodiments of the present disclosure;

[0033] Fig.11 A cross-sectional view of a first light emitting component in an optical module provided according to some embodiments of the present disclosure;

[0034] Fig.12An emission light path diagram of a first light emitting component in an optical module provided according to some embodiments of the present disclosure;

[0035] Fig.13 A structural diagram of a photodetector in an optical module provided according to some embodiments of the present disclosure;

[0036] Fig.14 A structural diagram of a photodetector in an optical module provided according to some embodiments of the present disclosure at another angle;

[0037] Fig.15 An assembly cross-sectional view of a circuit board, a first light emitting component, and a second light emitting component in an optical module provided according to some embodiments of the present disclosure;

[0038] Fig.16 A structural diagram of an optical connection component in an optical module provided according to some embodiments of the present disclosure;

[0039] Fig.17 An exploded view of an optical connection component in an optical module provided according to some embodiments of the present disclosure;

[0040] Fig.18 A structure of an optical fiber fixing member in an optical module according to some embodiments of the present disclosure Figure 1 ;

[0041] Fig.19 A structure of an optical fiber fixing member in an optical module according to some embodiments of the present disclosure Figure 2 ;

[0042] Fig. 20 A structure of an optical fiber fixing member in an optical module according to some embodiments of the present disclosure Figure 3 ;

[0043] Fig.21 A structural diagram of a support frame in an optical module provided according to some embodiments of the present disclosure;

[0044] Fig. 22 A cross-sectional view of an optical connection component in an optical module provided according to some embodiments of the present disclosure Figure 1 ;

[0045] Fig.23 A structure of a connector in an optical module provided according to some embodiments of the present disclosure Figure 1 ;

[0046] Fig.24 A structure of a connector in an optical module provided according to some embodiments of the present disclosure Figure 2 ;

[0047] Fig.25A cross-sectional view of an optical connection component in an optical module provided according to some embodiments of the present disclosure Figure 2 ;

[0048] Fig.26 A cross-sectional view of an optical connection component in an optical module provided according to some embodiments of the present disclosure Figure 3 ;

[0049] Fig. 27 A structural diagram of a cover in an optical module provided according to some embodiments of the present disclosure;

[0050] Fig.28 A cross-sectional view of an optical connection component in an optical module provided according to some embodiments of the present disclosure Figure 3 ;

[0051] Fig.29 An assembly cross-sectional view of a circuit board, a first light emitting component, a second light emitting component and an optical connecting component in an optical module provided according to some embodiments of the present disclosure;

[0052] Fig.30 A cross-sectional view of an optical module provided according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0053] 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 described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present disclosure.

[0054] In optical communication technology, in order to establish information transmission between information processing devices, it is necessary to load information onto light and use the propagation of light to achieve information transmission. Here, the light loaded with information is an optical signal. When optical signals are transmitted in information transmission equipment, the loss of optical power can be reduced, so high-speed, long-distance, and low-cost information transmission can be achieved. The signals that information processing equipment can recognize and process are electrical signals. Information processing equipment usually includes optical network terminals (Optical Network Unit, ONU), gateways, routers, switches, mobile phones, computers, servers, tablets, televisions, etc., and information transmission equipment usually includes optical fibers and optical waveguides.

[0055] The optical module can realize the mutual conversion between optical signals and electrical signals between information processing equipment and information transmission equipment. For example, at least one of the optical signal input end or the optical signal output end of the optical module is connected to an optical fiber, and at least one of the electrical signal input end or the electrical signal output end of the optical module is connected to an optical network terminal; the first optical signal from the optical fiber is transmitted to the optical module, and the optical module converts the first optical signal into a first electrical signal, and transmits the first electrical signal to the optical network terminal; the second electrical signal from the optical network terminal is transmitted to the optical module, and the optical module converts the second electrical signal into a second optical signal, and transmits the second optical signal to the optical fiber. Since multiple information processing devices can transmit information through electrical signals, at least one of the multiple information processing devices needs to be directly connected to the optical module, and all information processing devices do not need to be directly connected to the optical module. Here, the information processing device directly connected to the optical module is called the upper computer of the optical module. In addition, the optical signal input end or the optical signal output end of the optical module can be called an optical port, and the electrical signal input end or the electrical signal output end of the optical module can be called an electrical port.

[0056] Figure 1 FIG. 1 is a partial structural diagram of an optical communication system according to some embodiments. Figure 1 As shown, the optical communication system mainly includes a remote information processing device 1000 , a local information processing device 2000 , a host computer 100 , an optical module 200 , an external optical fiber 101 and a network cable 103 .

[0057] One end of the external optical fiber 101 extends toward the remote information processing device 1000, and the other end of the external optical fiber 101 is connected to the optical module 200 through the optical port of the optical module 200. The optical signal can be totally reflected in the external optical fiber 101, and the propagation of the optical signal in the total reflection direction can almost maintain the original optical power. The optical signal undergoes multiple total reflections in the external optical fiber 101 to transmit the optical signal from the remote information processing device 1000 to the optical module 200, or to transmit the optical signal from the optical module 200 to the remote information processing device 1000, thereby realizing long-distance, low-power loss information transmission.

[0058] The optical communication system may include one or more external optical fibers 101, and the external optical fibers 101 are detachably connected or fixedly connected to the optical module 200. The host computer 100 is configured to provide data signals to the optical module 200, or receive data signals from the optical module 200, or monitor or control the working state of the optical module 200.

[0059] The host computer 100 includes a substantially rectangular housing and an optical module interface 102 disposed on the housing. The optical module interface 102 is configured to connect to the optical module 200 so that the host computer 100 and the optical module 200 establish a unidirectional or bidirectional electrical signal connection.

[0060] The host computer 100 also includes an external electrical interface, which can be connected to an electrical signal network. For example, the external electrical interface includes a Universal Serial Bus (USB) interface or a network cable interface 104, and the network cable interface 104 is configured to access the network cable 103 so that the host computer 100 establishes a unidirectional or bidirectional electrical signal connection with the network cable 103. One end of the network cable 103 is connected to the local information processing device 2000, and the other end of the network cable 103 is connected to the host computer 100, so as to establish an electrical signal connection between the local information processing device 2000 and the host computer 100 through the network cable 103. For example, the third electrical signal sent by the local information processing device 2000 is transmitted to the host computer 100 through the network cable 103, and the host computer 100 generates a second electrical signal according to the third electrical signal. The second electrical signal from the host computer 100 is transmitted to the optical module 200, and the optical module 200 converts the second electrical signal into a second optical signal, and transmits the second optical signal to the external optical fiber 101, and the second optical signal is transmitted to the remote information processing device 1000 in the external optical fiber 101. For example, the first optical signal from the remote information processing device 1000 is transmitted through the external optical fiber 101, and the first optical signal from the external optical fiber 101 is transmitted to the optical module 200, and the optical module 200 converts the first optical signal into a first electrical signal, and the optical module 200 transmits the first electrical signal to the host computer 100, and the host computer 100 generates a fourth electrical signal according to the first electrical signal, and transmits the fourth electrical signal to the local information processing device 2000. It should be noted that the optical module is a tool for realizing the mutual conversion between optical signals and electrical signals. During the conversion process between the optical signals and electrical signals, the information does not change, but the encoding and decoding methods of the information can change.

[0061] 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.

[0062] Figure 2 FIG. 1 is a partial structural diagram of a host computer according to some embodiments. In order to clearly show the connection relationship between the optical module 200 and the host computer 100, Figure 2 Only the structure of the host computer 100 related to the optical module 200 is shown. Figure 2As shown, the host computer 100 further includes a PCB circuit board 105 disposed in the housing, a cage 106 disposed on the surface of the PCB circuit board 105, a heat sink 107 disposed on the cage 106, and an electrical connector disposed inside the cage 106. The electrical connector is configured to access the electrical port of the optical module 200; the heat sink 107 has a protruding structure such as fins to increase the heat dissipation area.

[0063] The optical module 200 is inserted into the cage 106 of the host computer 100, and the cage 106 fixes the optical module 200. The heat generated by the optical module 200 is transferred to the cage 106 and then diffused through the heat sink 107. After the optical module 200 is inserted into the cage 106, the electrical port of the optical module 200 is connected to the electrical connector inside the cage 106, so that the optical module 200 establishes a bidirectional electrical signal connection with the host computer 100. In addition, the optical port of the optical module 200 is connected to the external optical fiber 101, so that the optical module 200 establishes a bidirectional optical signal connection with the external optical fiber 101.

[0064] Figure 3 is a structural diagram of an optical module according to some embodiments, Figure 4 FIG. 1 is an exploded view of an optical module according to some embodiments. Figure 3 and Figure 4 As shown, the optical module 200 includes a shell, a circuit board 300 disposed in the shell, a light emitting component and an optical connecting component 900, and the light emitting component is connected to the optical connecting component 900 through an optical fiber ribbon.

[0065] The housing includes an upper housing 201 and a lower housing 202. The upper housing 201 covers the optical connection component 900 and the lower housing 202 to form the housing with at least one end open (opening 204 and / or opening 205). The outer contour of the housing is generally a square body.

[0066] In some embodiments, the lower shell 202 includes a bottom plate 2021 and two lower side plates 2022 located on both sides of the bottom plate 2021 and vertically arranged with respect to the bottom 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.

[0067] In some embodiments, the lower shell 202 includes a bottom plate 2021 and two lower side plates 2022 located on both sides of the bottom plate 2021 and vertically arranged with the bottom plate 2021; the upper shell 201 includes an upper cover plate 2011 and two upper side plates located on both sides of the upper cover plate 2011 and vertically arranged with the upper cover plate 2011, and the two upper side plates are combined with the two lower side plates 2022 to realize that the upper shell 201 covers the lower shell 202.

[0068] The direction of the line connecting the two openings 204 and 205 may be consistent with the length direction of the optical module 200, or may be inconsistent with the length direction of the optical module 200. For example, the opening 204 is located at the end of the optical module 200 ( Figure 3 The opening 205 formed by the optical connecting component 900 is also located at the end of the optical module 200 ( Figure 3 ), the opening 204 and the opening 205 are located on the same side of the optical module 200. Alternatively, the opening 204 is located at the end of the optical module 200, and the opening 205 is located at the side of the optical module 200. The opening 204 is an electrical port, and the gold finger 301 of the circuit board 300 extends from the electrical port and is inserted into the electrical connector of the host computer 100; the opening 205 is an optical port, which is configured to be inserted into the optical connector of the host computer 100, so that the optical component in the optical module 200 is connected to the optical connector in the host computer 100.

[0069] The upper shell 201 and the lower shell 202 are combined to facilitate the installation of the circuit board 300, the light emitting component, the optical connecting component 900, etc. into the above-mentioned shell, and the upper shell 201 and the lower shell 202 can encapsulate and protect the above-mentioned components. In addition, when assembling the circuit board 300, the light emitting component, the optical connecting component 900, etc., the above-mentioned upper shell 201 and the lower shell 202 are combined to facilitate the deployment of the positioning components, heat dissipation components and electromagnetic shielding components of these components, which is conducive to the automated production.

[0070] In some embodiments, the upper shell 201 and the lower shell 202 are made of metal materials to facilitate electromagnetic shielding and heat dissipation.

[0071] 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.

[0072] For example, the unlocking component 600 is located on the outside of the two lower side plates 2022 of the lower housing 202, and includes a snap-fit ​​component that matches 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 fixes 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 relationship between the snap-fit ​​component and the host computer, so as to release the fixation of the optical module 200 and the host computer, so that the optical module 200 can be pulled out of the cage 106.

[0073] 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 realize the functions of power supply, electrical signal transmission and grounding. The electronic components may include capacitors, resistors, transistors, metal-oxide-semiconductor field-effect transistors (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET), etc. The chips may include microcontroller units (Microcontroller Unit, MCU), laser driver chips, transimpedance amplifiers (Transimpedance Amplifier, TIA), limiting amplifiers (Limiting amplifier, LA), clock and data recovery chips (Clock and Data Recovery, CDR), power management chips, digital signal processing (Digital Signal Processing, DSP) chips.

[0074] 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.

[0075] The circuit board 300 also includes a gold finger 301 formed on the end surface thereof. 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 provided on only one side of the circuit board 300 (e.g. Figure 4 The upper surface shown in the figure) can also be set on the upper and lower surfaces of the circuit board 300 to provide more pins, so as to adapt to occasions where the number of pins is large. 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.

[0076] In some embodiments, the light emitting component is directly disposed on the circuit board 300 , and the light emitting component is located on a side of the circuit board 300 away from the gold finger 301 .

[0077] In some embodiments, the light emitting component is physically separated from the circuit board 300 and then electrically connected to the circuit board 300 through a corresponding flexible circuit board or electrical connector.

[0078] Figure 5is a partial structural diagram of an optical module provided according to some embodiments of the present disclosure, Figure 6 FIG. 1 is a partial exploded view of an optical module provided according to some embodiments of the present disclosure. Figure 5 and Figure 6 As shown, the optical emitting component includes a first optical emitting component 410 and a second optical emitting component 420, and the first optical emitting component 410 and the second optical emitting component 420 are arranged on the circuit board 300 along the left-right direction, the first optical emitting component 410 is located on the left side of the circuit board 300, the optical connecting component 900 is located on the right side of the circuit board 300, and the second optical emitting component 420 is located between the first optical emitting component 410 and the optical connecting component 900, and the first optical emitting component 410 and the second optical emitting component 420 are respectively connected by optical fiber ribbons and the optical connecting component 900, and the optical signals emitted by the first optical emitting component 410 and the second optical emitting component 420 are transmitted to the optical connector of the host computer 100 via the optical connecting component 900 to realize light emission.

[0079] In some embodiments, the cavity formed by the upper shell 201 and the lower shell 202 has only one opening, and the gold finger 301 is arranged on the right side of the circuit board 300, so that the gold finger 301 and the optical connecting component 900 are located in the same opening of the circuit board 300. When the optical module 200 is inserted into the upper computer 100, the gold finger 301 is inserted into the electrical connector of the upper computer 100, and the gold finger 301 transmits the received electrical signal to the circuit board 300, and the electrical signal is then transmitted to the first light emitting component 410 and the second light emitting component 420 via the circuit board 300, so that the first light emitting component 410 and the second light emitting component 420 generate an optical signal; the optical signal generated by the first light emitting component 410 and the second light emitting component 420 is transmitted to the optical connector in the upper computer 100 via the optical connecting component 900, and the upper computer 100 can use the optical signal as a signal source for its own use, or it can separate an optical fiber from itself to transmit the optical signal to other devices.

[0080] In some embodiments, the first light emitting component 410 and the second light emitting component 420 can be directly set on the circuit board 300, and the lasers of the first light emitting component 410 and the second light emitting component 420 are electrically connected to the circuit board 300 through bonding, so that the first light emitting component 410 and the second light emitting component 420 generate optical signals respectively.

[0081] In some embodiments, when the first light emitting component 410 and the second light emitting component 420 are directly disposed on the circuit board 300, the layout space of the circuit board 300 becomes smaller, which may affect the layout of electrical components on the circuit board 300. In order to ensure the layout space on the circuit board 300, the first light emitting component 410 and the second light emitting component 420 are separated from the circuit board 300, and the first light emitting component 410 and the second light emitting component 420 can be electrically connected to the circuit board 300 through a flexible circuit board.

[0082] The first light emitting component 410 includes a first flexible circuit board 430, and the second light emitting component 420 includes a second flexible circuit board 440. One end of the first flexible circuit board 430 is electrically connected to the circuit board 300, and the other end of the first flexible circuit board 430 is electrically connected to the light emitting component in the first light emitting component 410, so as to realize the electrical connection between the circuit board 300 and the first light emitting component 410 through the first flexible circuit board 430, so that the first light emitting component 410 generates a first optical signal.

[0083] One end of the second flexible circuit board 440 is electrically connected to the circuit board 300, and the other end of the second flexible circuit board 440 is electrically connected to the optical emission component in the second optical emission component 420, so as to realize the electrical connection between the circuit board 300 and the second optical emission component 420 through the second flexible circuit board 440, so that the second optical emission component 420 generates a second optical signal.

[0084] In some embodiments, the optical module provided by the embodiments of the present disclosure may include only a light emitting component or only a light receiving component, wherein the light receiving component includes a first light receiving component and a second light receiving component, wherein the first light receiving component and the second light receiving component are arranged on the circuit board 300 along the left-right direction, and the first light receiving component and the second light receiving component are respectively connected by an optical fiber ribbon and an optical connecting component 900, and the optical connecting component 900 receives a received light signal transmitted by the upper computer 100, and the received light signal is transmitted to the first light receiving component and the second light receiving component respectively via the optical fiber ribbon, and the first light receiving component and the second light receiving component convert the received light signal into an electrical signal, which is transmitted to the gold finger 301 via the circuit board 300, and the electrical signal is then transmitted to the upper computer 100 via the gold finger 301 to realize light reception.

[0085] In some embodiments, the optical module provided by the embodiments of the present disclosure may also include a light emitting component and a light receiving component, which are arranged on the circuit board 300 along the left-right direction, and the light emitting component and the light receiving component are respectively connected by an optical fiber ribbon and an optical connecting component 900, and the light emitting component generates an optical signal according to the electrical signal transmitted by the circuit board 300, and the optical signal is transmitted to the optical connecting component 900 via the optical fiber ribbon, and the optical connecting component 900 transmits the optical signal to the host computer 100 to realize light emission.

[0086] The optical connection component 900 receives the received optical signal transmitted by the upper computer 100, and the received optical signal is transmitted to the optical receiving component via the optical fiber ribbon. The optical receiving component converts the received optical signal into an electrical signal, and the electrical signal is transmitted to the gold finger 301 via the circuit board 300, and the electrical signal is then transmitted to the upper computer 100 via the gold finger 301 to realize light reception.

[0087] Figure 7 FIG. 1 is a structural diagram of a circuit board in an optical module according to some embodiments of the present disclosure. Figure 6 and Figure 7 As shown, a first electrical connection area 302 and a second electrical connection area 303 are formed on the circuit board 300. The first electrical connection area 302 is located on the left side of the circuit board 300, and the second electrical connection area 303 is located between the first electrical connection area 302 and the gold finger 301. A first electrical socket 310 is provided on the first electrical connection area 302, and the first electrical socket 310 is electrically connected to the circuit board 300; a second electrical socket 320 is provided on the second electrical connection area 303, and the second electrical socket 320 is electrically connected to the circuit board 300.

[0088] A first electrical plug 4301 is provided on the side of the first flexible circuit board 430 facing the circuit board 300. Since the first flexible circuit board 430 is elastic, one end of the first flexible circuit board 430 can be bent toward the circuit board 300. The first electrical plug 4301 is inserted into the first electrical socket 310, so that the first flexible circuit board 430 is electrically connected to the circuit board 300 through the first electrical plug 4301 and the first electrical socket 310.

[0089] A second electrical plug 4401 is provided on the side of the second flexible circuit board 440 facing the circuit board 300. Since the second flexible circuit board 440 is elastic, one end of the second flexible circuit board 440 can be bent toward the circuit board 300, and the second electrical plug 4401 is inserted into the second electrical socket 320, so that the second flexible circuit board 440 is electrically connected to the circuit board 300 through the second electrical plug 4401 and the second electrical socket 320.

[0090] Figure 8 is a flip structure diagram of a first light emitting component in an optical module provided according to some embodiments of the present disclosure, Fig. 9 FIG. 1 is a partial flip structure diagram of a first light emitting component in an optical module provided according to some embodiments of the present disclosure. Fig.10 FIG. 1 is a structural diagram of a first emitting housing in an optical module according to some embodiments of the present disclosure. Figure 8 , Fig. 9 and Fig.10As shown, the first light emitting component 410 also includes a first emission shell 411 and a first light emitting assembly. The first emission shell 411 is covered on the circuit board 300, and the first light emitting assembly is installed in the first emission shell 411. There is a gap between the first light emitting assembly and the surface of the circuit board 300, and electrical components can be arranged on the circuit board 300 corresponding to the gap.

[0091] The side of the first flexible circuit board 430 facing away from the circuit board 300 is welded to one end of the first transmitting shell 411, and a soldering pad is provided on the side of the first flexible circuit board 430 facing the circuit board 300. The first optical transmitting component is connected to the soldering pad by bonding, and the first optical transmitting component generates an optical signal according to the electrical signal transmitted by the first flexible circuit board 430.

[0092] In some embodiments, the first optical emission component includes a laser group 4101, a collimating lens group 4102 and an optical fiber bracket 4105. The laser group 4101, the collimating lens group 4102 and the optical fiber bracket 4105 are arranged in sequence along the left and right directions. The laser group 4101 is located on the left side of the first emission shell 411, so that the laser group 4101 is close to the first flexible circuit board 430, and the installation height of the laser group 4101 is the same as the installation height of the first flexible circuit board 430; the optical fiber bracket 4105 is located on the right side of the first emission shell 411, and the optical signal generated by the laser group 4101 is transmitted from left to right to the first optical fiber ribbon in the optical fiber bracket 4105. The first optical fiber ribbon is optically connected to the optical connection component 900, so that the optical signal is transmitted to the optical connection component 900 via the first optical fiber ribbon.

[0093] In some embodiments, the first light emitting component 410 can emit signal lights of multiple different wavelengths, and the signal lights of multiple different wavelengths are transmitted to the host computer 100 via the first optical fiber ribbon and the optical connecting component 900 .

[0094] The laser group 4101 includes multiple lasers, and the collimating lens group 4102 includes multiple collimating lenses. Each laser emits a light beam, and each collimating lens is arranged in the output light direction of each laser. The collimating lens converts the light beam emitted by the laser into a collimated light beam, and each collimated light beam is transmitted to an optical fiber of the optical fiber ribbon.

[0095] In order to couple the collimated light beam into the optical fiber of the optical fiber ribbon, the first light emitting component also includes a converging lens group 4103, which is located between the collimating lens group 4102 and the optical fiber bracket 4105. The converging lens group 4103 includes a plurality of converging lenses, each of which is arranged in the output light direction of each collimating lens, and the converging lens converges the collimated light beam output by the collimating lens into the optical fiber ribbon in the optical fiber bracket 4105.

[0096] In some embodiments, when the multi-path convergent light beam emitted by the convergent lens group 4103 is coupled to the optical fiber, part of the light beam may be reflected at the end face of the optical fiber, and the reflected light may return to the laser group 4101 along the original path, affecting the light emitting performance of the laser. In order to prevent the light reflected from the end face of the optical fiber from returning along the original path, the first optical emission assembly also includes an isolator group 4104, which is located between the convergent lens group 4103 and the optical fiber bracket 4105. The isolator group 4104 includes a plurality of isolators. The convergent light beam output by the convergent lens is injected into the optical fiber through the isolator, and part of the light beam is reflected at the end face of the optical fiber. The reflected light is isolated by the isolator and cannot pass through the isolator. In this way, the reflected light will not return to the laser group 4101 along the original path, thereby ensuring the light emitting performance of the laser group 4101.

[0097] In some embodiments, the second light emitting component 420 also includes a second emitting shell and a second light emitting assembly. The second emitting shell cover is disposed on the circuit board 300, and the second light emitting assembly is installed in the second emitting shell. There is a gap between the second light emitting assembly and the surface of the circuit board 300, and electrical components can be arranged on the circuit board 300 corresponding to the gap.

[0098] The side of the second flexible circuit board 440 facing away from the circuit board 300 is welded to one end of the second transmitting shell, and a soldering pad is provided on the side of the second flexible circuit board 440 facing the circuit board 300. The second optical transmitting component is connected to the soldering pad by bonding, and the second optical transmitting component generates an optical signal according to the electrical signal transmitted by the second flexible circuit board 440.

[0099] The first transmitting shell 411 has the same structure as the second transmitting shell, the second optical transmitting component has the same structure as the first optical transmitting component, the second optical transmitting component is connected to the optical connecting component 900 through the second optical fiber ribbon, and the multi-channel signal light generated by the second optical transmitting component is transmitted to the host computer 100 via the second optical fiber ribbon and the optical connecting component 900.

[0100] Fig.10 is a structural diagram of a first emitting housing in an optical module provided according to some embodiments of the present disclosure, Fig.11 FIG. 4 is a cross-sectional view of a first light emitting component in an optical module according to some embodiments of the present disclosure. Fig.10 and Fig.11 As shown, the first launching shell 411 includes a first top plate 4110, a first side plate 4112 and a second side plate 4113, one end of the first side plate 4112 and the second side plate 4113 are respectively fixedly connected to the inner side surface of the first top plate 4110, and the first side plate 4112 and the second side plate 4113 are arranged opposite to each other, so that the first top plate 4110, the first side plate 4112 and the second side plate 4113 form a U-shaped shell.

[0101] A first boss 4114 is formed at one end of the first top plate 4110 toward the first flexible circuit board 430, and the first boss 4114 extends from the left side of the first top plate 4110 to the right side. The size of the first boss 4114 in the left-right direction is smaller than the size of the first top plate 4110 in the left-right direction, and one side of the first flexible circuit board 430 is fixedly connected to the first boss 4114 to connect the first flexible circuit board 430 to the first launching shell 411 through the first boss 4114.

[0102] A first mounting surface 4111 is formed on the inner side surface of the first top plate 4110. The first mounting surface 4111 is located between the first boss 4114 and the right side surface of the first top plate 4110. The first mounting surface 4111 is recessed in the first boss 4114. The laser group 4101 is located on the first mounting surface 4111 to facilitate electrical connection of the laser group 4101 with the first flexible circuit board 430 through wire bonding.

[0103] Reference Fig.11 In some embodiments, the laser group 4101 includes multiple laser heat sinks and multiple lasers, one laser is set on a laser heat sink, and the front of the laser faces the collimating lens to emit a laser beam; the laser heat sink is used to dissipate heat for the laser.

[0104] The laser group 4101 also includes a substrate 4108, which is located on the first mounting surface 4111. The substrate 4108 is used to support multiple laser heat sinks and a collimating lens group 4102, that is, multiple laser heat sinks and a collimating lens group 4102 can be sequentially adhered to the substrate 4108 by glue, and the laser is adhered to the laser heat sink to support and fix the laser group 4101 through the substrate 4108.

[0105] In some embodiments, the laser group 4101 also includes a semiconductor refrigerator (Thermoelectric cooler, TEC) 4107, TEC4107 is attached to the first mounting surface 4111, TEC4107 is used to support and fix the substrate 4108, the substrate 4108 is used to support and fix multiple laser heat sinks, and the laser heat sink is used to support and fix the laser. In this way, the heat generated by the laser is transferred to the laser heat sink, the substrate 4108 and the TEC4107 in turn, thereby effectively realizing the heat dissipation of the laser.

[0106] TEC4107 can adjust the temperature of the laser and also raise the installation height of the laser so that the installation height of the laser is the same as the installation height of the first flexible circuit board 430 to shorten the bonding length between the laser and the first flexible circuit board 430 .

[0107] A second boss 4115 is also formed on the inner side surface of the top plate 41110, and the first mounting surface 4111 is located between the first boss 4114 and the second boss 4115. The height of the second boss 4115 may be the same as that of the first boss 4114. The converging lens group 4103 and the isolator group 4104 are installed on the second boss 4115 so that the optical axis of the converging lens, the optical axis of the isolator and the optical axis of the collimating lens are located on the same plane, so that the collimated light emitted by the collimating lens can pass through the converging lens and the isolator smoothly.

[0108] A second mounting surface 4116 is also formed on the inner side surface of the first top plate 4110. The second boss 4115 is located between the first mounting surface 4111 and the second mounting surface 4116. The second mounting surface 4116 is recessed in the first mounting surface 4111. The optical fiber holder 4105 is installed on the second mounting surface 4116. An optical fiber ribbon is installed on the upper part of the optical fiber holder 4105. The optical axis of the optical fiber and the optical axis of the isolator are located on the same plane so that the light passing through the isolator can be converged into the optical fiber.

[0109] In some embodiments, the optical fiber bracket 4105 is adhered to the second mounting surface 4116 by glue. To facilitate the injection of glue, a glue guide groove 4117 is formed on the second mounting surface 4116. The glue guide groove 4117 surrounds the second mounting surface 4116. The staff injects glue into the glue guide groove 4117 and then places the optical fiber bracket 4105 on the second mounting surface 4116. The glue in the glue guide groove 4117 fills the gap between the optical fiber bracket 4105 and the second mounting surface 4116 to adhere the optical fiber bracket 4105 to the second mounting surface 4116.

[0110] Fig.12 FIG. 1 is a transmission light path diagram of a first light emitting component in an optical module according to some embodiments of the present disclosure. Fig.12 As shown, TEC4107 is pasted on the first mounting surface 4111, substrate 4108 is pasted on TEC4107, multiple laser heat sinks are pasted on substrate 4108, multiple lasers are pasted on multiple laser heat sinks, and collimating lens group 4102 is pasted on substrate 4108 along the light emitting direction of the laser; then the converging lens group 4103 and the isolator group 4104 are pasted on the second boss 4115, the optical fiber bracket 4105 is pasted on the second mounting surface 4116, and then the first flexible circuit board 430 is pasted on the first boss 4114, the first flexible circuit board 430 is connected to the laser group 4101 by wiring, the first flexible circuit board 430 is electrically connected to the circuit board 300, and the circuit board 300 transmits electrical signals to the laser group 4101 through the first flexible circuit board 430, so that the laser group 4101 generates multiple paths of light with different wavelengths.

[0111] Multiple channels of light with different wavelengths are converted into multiple collimated light beams through the collimating lens group 4102, and the multiple collimated light beams are converted into multiple convergent light beams through the converging lens group 4103. The multiple convergent light beams are directly coupled to the optical fiber ribbon in the optical fiber bracket 4105 through the isolator group 4104, and the multiple optical signals are transmitted to the optical connecting component 900 through the optical connecting component 900, so as to transmit the multiple optical signals to the host computer 100 through the optical connecting component 900, thereby realizing the emission of multiple lights.

[0112] Reference Fig. 9 In some embodiments, in order to monitor the light emitting power of the laser, the first light emitting assembly further includes a photodetector group 4106, and the photodetector group 4106 includes a plurality of photodetectors, each of which is located in the light emitting direction of the back side of each laser, and the photodetector collects the emitted light emitted from the back side of the laser. Since the light power of the light emitted from the front side of the laser is the same as the light power of the light emitted from the back side, the light power emitted from the front side of the laser can be obtained according to the light power emitted from the back side of the laser, and the light power emitted from the laser can be adjusted according to the actual situation.

[0113] Fig.13 is a structural diagram of a photodetector in an optical module provided according to some embodiments of the present disclosure, Fig.14 FIG. 1 is a structural diagram of a photodetector in an optical module provided according to some embodiments of the present disclosure at another angle. Fig.13 and Fig.14 As shown, the photodetector includes a bottom surface, a top surface 4121 and a bevel 4122, and the bottom surface is pasted on the laser heat sink to paste the photodetector on the laser heat sink; an anode 4124 and a cathode 4123 are formed on the top surface 4121, and the anode 4124 and the cathode 4123 are electrically connected to the first flexible circuit board 430 through gold wires respectively. The photodetector converts the collected emission light into an electrical signal, and the electrical signal is transmitted to the circuit board 300 via the first flexible circuit board 430. The electrical signal is calculated by the electrical device on the circuit board 300 to obtain the emission light power of the laser.

[0114] In some embodiments, a groove 4125 is formed on the inclined surface 4122, and the groove 4125 has an opening at one end facing the laser. A photosensitive surface 4126 is formed in the groove 4125. When the laser beam emitted from the back of the laser is input into the photosensitive surface 4126, the laser beam enters the photodetector through the photosensitive surface 4126, and part of the laser beam may be reflected on the photosensitive surface 4126.

[0115] In some embodiments, the photosensitive surface 4126 is tilted. If the photosensitive surface 4126 is perpendicular to the top surface 4121 of the photodetector, when the laser beam is reflected on the photosensitive surface 4126, the reflected beam will return to the laser along the incident optical path of the laser beam, affecting the luminous performance of the laser. When the photosensitive surface 4126 is tilted, when the laser beam is reflected on the photosensitive surface 4126, the reflected beam is set at a certain angle to the incident beam, and the reflected beam will not return to the laser along the incident optical path, thus ensuring the luminous performance of the laser.

[0116] Reference Fig.12 In some embodiments, the photodetector is not located on the front or back side of the laser. Since the laser beam emitted from the back side of the laser is divergent light, the receiving direction of the photodetector is set at a preset angle to the light emitting direction from the back side of the laser, so that part of the laser beam emitted from the back side of the laser enters the photodetector, so as to further prevent the reflected light of the laser beam at the photosensitive surface 4126 from returning to the laser.

[0117] In some embodiments, the photodetector is offset from the light emitting direction of the back side of the laser, and the offset distance between the photodetector and the light emitting direction of the back side of the laser is 2 to 3 mm, so that 1% of the laser beam emitted from the back side of the laser enters the photodetector, so as to monitor the emitted light power of the laser in real time through the photodetector.

[0118] Fig.15 FIG. 1 is an assembly cross-sectional view of a circuit board, a first light emitting component, and a second light emitting component in an optical module according to some embodiments of the present disclosure. Fig.15 As shown, the first emission shell 411 of the first light emitting component 410 is covered on the circuit board 300, and the first light emitting assembly of the first light emitting component 410 is arranged on the first emission shell 411. There is a gap between the first light emitting assembly and the surface of the circuit board 300, so that the first light emitting component 410 can be flipped on the circuit board 300; the left end of the first flexible circuit board 430 is electrically connected to the circuit board 300, and the right end of the first flexible circuit board 430 is fixed on the first emission shell 411. The first light emitting assembly is electrically connected to the first flexible circuit board 430 through wiring, so as to transmit the electrical signal transmitted by the circuit board 300 to the first light emitting assembly through the first flexible circuit board 430, so as to drive the first light emitting component 410 to generate multiple optical signals of different wavelengths, and the multiple optical signals of different wavelengths are transmitted to the optical connection component 900 through the first optical fiber ribbon.

[0119] The second emission shell cover of the second light emitting component 420 is arranged on the circuit board 300, and the second light emitting assembly of the second light emitting component 420 is arranged on the second emission shell, and there is a gap between the second light emitting assembly and the surface of the circuit board 300, so that the second light emitting component 420 can be flipped on the circuit board 300; the left end of the second flexible circuit board 440 is electrically connected to the circuit board 300, and the right end of the second flexible circuit board 440 is fixed on the second emission shell, and the second light emitting assembly is electrically connected to the second flexible circuit board 440 through wiring, so as to transmit the electrical signal transmitted by the circuit board 300 to the second light emitting assembly through the second flexible circuit board 440, so as to drive the second light emitting component 420 to generate multiple optical signals with different wavelengths, and the multiple optical signals with different wavelengths are transmitted to the optical connection component 900 through the second optical fiber ribbon.

[0120] Reference Figure 5 In some embodiments, the optical axis of the first light emitting component 410 may coincide with the optical axis of the second light emitting component 420, or the optical axis of the first light emitting component 410 may not coincide with the optical axis of the second light emitting component 420, so that the first light emitting component 410 and the second light emitting component 420 are staggered, so that the optical fiber ribbon of the first light emitting component 410 and the optical fiber ribbon of the second light emitting component 420 are staggered, thereby avoiding signal crosstalk caused by the close distance of the optical fibers.

[0121] In some embodiments, the first optical fiber ribbon passes through both sides of the second light emitting component 420 and is connected to the optical connecting component 900, so that the first optical fiber ribbon avoids the second light emitting component 420. Compared with the first optical fiber ribbon passing over the second light emitting component 420, the first optical fiber ribbon is prevented from being excessively bent when passing through both sides of the second light emitting component 420.

[0122] In some embodiments, in the optical module provided by the embodiments of the present disclosure, the optical port and the electrical port are located on the same side (right side) of the optical module. When the optical module 200 is inserted into the host computer 100, the gold finger 301 on the circuit board 300 is inserted into the electrical connector of the host computer 100 to transmit the electrical signal from the host computer 100 to the circuit board 300 through the gold finger 301; the optical connection component 900 of the optical module is inserted into the optical connector of the host computer 100 to transmit the optical signal emitted by the optical emitting component to the host computer 100 through the optical connection component 900, so that the host computer 100 has both optoelectronic functions.

[0123] Fig.16 is a structural diagram of an optical connection component in an optical module provided according to some embodiments of the present disclosure, Fig.17 FIG. 1 is an exploded view of an optical connection component in an optical module provided according to some embodiments of the present disclosure. Fig.16 and Fig.17As shown, the optical connection component 900 includes an optical fiber fixing part 902, a support frame 903, a plug-in component 904 and a core assembly 905. The optical fiber fixing part 902 is fixed to the right side of the circuit board 300, and the optical fiber fixing part 902 is located above the gold finger 301; the support frame 903 is pasted on the circuit board 300, and the support frame 903 supports the optical fiber fixing part 902, so that the optical fiber fixing part 902 is fixed to the circuit board 300 through the support frame 903; the plug-in component 904 is located in the optical fiber fixing part 902, and the plug-in component 904 is fixed in the optical fiber fixing part 902, and the core assembly 905 is inserted into the optical fiber fixing part 902 through the plug-in component 904, so that when the optical connection component 900 is inserted into the optical connector of the host computer 100, the core assembly 905 is connected to the plug in the optical connector to realize the optical connection between the optical connection component 900 and the optical connector, thereby realizing the optical connection between the optical module 200 and the host computer 100.

[0124] In some embodiments, the optical connection component 900 also includes a cover body 901, which is covered on the circuit board 300. The optical fiber fixing component 902 is wrapped by the cover body 901. When the upper shell 201 is covered on the lower shell 202, the upper shell 201 is pressed on the cover body 901 to ensure the installation stability of the optical fiber fixing component 902 through the cover body 901.

[0125] Fig.18 A structure of an optical fiber fixing member in an optical module according to some embodiments of the present disclosure Figure 1 , Fig.19 A structure of an optical fiber fixing member in an optical module according to some embodiments of the present disclosure Figure 2 , Fig. 20 A structure of an optical fiber fixing member in an optical module according to some embodiments of the present disclosure Figure 3 .like Fig.18 , Fig.19 and Fig. 20 As shown, the optical fiber fixing part 902 includes a connecting part and an inserting part 9021, the connecting part faces the light emitting component, the inserting part 9021 faces the gold finger 301, the connecting part is fixed on the circuit board 300, the inserting part 9021 is fixedly connected to the connecting part, and when the optical connecting component 900 is inserted into the optical connector of the host computer 100, the inserting part 9021 is inserted into the optical connector.

[0126] The connecting part includes a second top plate 9020, a third side plate 9022, a fourth side plate 9023 and a fifth side plate 9024. The third side plate 9022, the fourth side plate 9023 and the fifth side plate 9024 are respectively fixedly connected to the inner side surface of the second top plate 9020. The third side plate 9022 and the fourth side plate 9023 are arranged opposite to each other. The fifth side plate 9024 is arranged opposite to the left side surface of the second top plate 9020. In this way, the second top plate 9020, the third side plate 9022, the fourth side plate 9023 and the fifth side plate 9024 form a square cavity. Openings are formed on the left and lower sides of the square cavity. The optical fiber ribbon connecting the first light emitting component 410 and the second light emitting component 420 is inserted into the connecting part through the opening on the left side of the connecting part.

[0127] Reference Fig. 20 A through hole 910 is formed in the insertion part 9021, and the through hole 910 is connected to the cavity in the connecting part. The ferrule assembly 905 is inserted into the through hole 910 through the opening on the left side of the connecting part, so that when the insertion part 9021 is inserted into the optical connector of the host computer 100, the ferrule assembly 905 is connected to the plug in the optical connector.

[0128] In some embodiments, a first positioning column 9025 is provided on the side of the third side plate 9022 facing the circuit board 300, a second positioning column 9026 is provided on the side of the fourth side plate 9023 facing the circuit board 300, and a third positioning column and a fourth positioning column are provided on the side of the fifth side plate 9024 facing the circuit board 300; a plurality of positioning holes are formed on the circuit board 300, and the first positioning column 9025, the second positioning column 9026, the third positioning column and the fourth positioning column are respectively inserted into the positioning holes, and the optical fiber fixing member 902 is fixedly connected to the plurality of positioning holes and the circuit board 300 through the first positioning column 9025, the second positioning column 9026, the third positioning column and the fourth positioning column.

[0129] Fig.21 is a structural diagram of a support frame in an optical module provided according to some embodiments of the present disclosure, Fig. 22 A cross-sectional view of an optical connection component in an optical module provided according to some embodiments of the present disclosure Figure 1 .like Fig.21 and Fig. 22 As shown, when the optical fiber fixing part 902 is fixedly connected to the circuit board 300 through the positioning columns and the positioning holes, in order to ensure the stability of the optical fiber fixing part 902, the support frame 903 is placed in the cavity between the connecting part and the circuit board 300, and the support frame 903 is adhered to the circuit board 300, and the optical fiber fixing part 902 is supported and fixed by the support frame 903.

[0130] The support frame 903 includes a support body 9030, the bottom surface of the support body 9030 can be pasted on the circuit board 300, and an avoidance groove 9035 that runs through the left and right sides is formed on the top surface of the support body 9030. The optical fiber ribbon connected to the light emitting component passes over the avoidance groove 9035 and is inserted into the core assembly 905 to support the optical fiber ribbon through the avoidance groove 9035.

[0131] In some embodiments, the bottom surface of the bracket body 9030 may be provided with a first support platform 9033 and a second support platform 9034, and the first support platform 9033 and the second support platform 9034 are fixedly connected to the surface of the circuit board 300, so that there is a certain gap between the bottom surface of the bracket body 9030 and the circuit board 300, so as to facilitate the arrangement of electrical components and wiring in the gap, thereby saving the layout space of the circuit board 300.

[0132] The bracket body 9030 includes a first side surface 9031 and a second side surface 9032, and the first side surface 9031 and the second side surface 9032 are respectively facing the two lower side plates 2022 of the lower shell 202, and the top surface of the first support platform 9033 is connected to the first side surface 9031, and the first support platform 9033 extends from the first side surface 9031 to the direction of the lower side plate 2022; the top surface of the second support platform 9034 is connected to the second side surface 9032, and the second support platform 9034 extends from the second side surface 9032 to the direction of the lower side plate 2022.

[0133] Reference Fig.18 and Fig. 22 A first notch 906 is formed on the bottom surface of the third side plate 9022, and the first notch 906 is located between the first positioning column 9025 and the fifth side plate 9024; a second notch 907 is formed on the bottom surface of the fourth side plate 9023, and the second notch 907 is located between the second positioning column 9026 and the fifth side plate 9024. When the optical fiber fixing member 902 is fixed to the circuit board 300 through the positioning column and the positioning hole, the top surface of the bracket body 9030 abuts against the inner side surface of the second top plate 9020, the first support platform 9033 is inserted into the first notch 906, and the second support platform 9034 is inserted into the second notch 907, so that the optical fiber fixing member 902 is supported by the support frame 903.

[0134] Fig.23 A structure of a connector in an optical module provided according to some embodiments of the present disclosure Figure 1 , Fig.24 A structure of a connector in an optical module provided according to some embodiments of the present disclosure Figure 2 .like Fig.23 and Fig.24As shown, in order to facilitate the insertion of the core assembly 905 into the insertion part 9021 of the optical fiber fixing part 902, the connector 904 includes a connecting plate 9040, a first mounting platform 9041 and a second mounting platform 9042, the first mounting platform 9041 and the second mounting platform 9042 are respectively fixed on the connecting plate 9040, the first mounting platform 9041 and the second mounting platform 9042 are respectively close to the two lower side plates 2022 of the lower shell 202, and there is an avoidance gap 9045 between the first mounting platform 9041 and the second mounting platform 9042, the first optical fiber ribbon and the second optical fiber ribbon connecting the two light emitting components are inserted into the core assembly 905 through the avoidance gap 9045 to avoid the first optical fiber ribbon and the second optical fiber ribbon.

[0135] A first pin 9046 is provided on the right side surface of the first mounting platform 9041 (the side facing the gold finger 301), and the first pin 9046 extends from the right side surface of the first mounting platform 9041 toward the gold finger 301; a second pin 9047 is provided on the right side surface of the second mounting platform 9042, and the second pin 9047 extends from the right side surface of the second mounting platform 9042 toward the gold finger 301.

[0136] Reference Fig.17 The ferrule assembly 905 is provided with a pin hole penetrating the left and right sides. The first pin 9046 and the second pin 9047 of the connector 904 are respectively inserted into the pin holes of the ferrule assembly 905. The left side of the ferrule assembly 905 contacts the right side of the connector 904, so that the connector 904 is fixedly connected to the ferrule assembly 905. After the connector 904 is fixedly connected to the ferrule assembly 905, the connector 904 is fixed in the optical fiber fixing member 902, so that the ferrule assembly 905 is located in the insertion portion 9021 of the optical fiber fixing member 902.

[0137] Reference Fig.23 In some embodiments, a first inserting platform 9043 is formed on the side of the first mounting platform 9041 facing the lower side plate 2022, and the first inserting platform 9043 extends from the side of the first mounting platform 9041 toward the direction of the lower side plate 2022, and the size of the first inserting platform 9043 in the left and right direction is the same as the size of the first mounting platform 9041 in the left and right direction.

[0138] A second inserting platform 9044 is formed on the side of the second mounting platform 9042 facing the other lower side plate 2022. The second inserting platform 9044 extends from the side of the second mounting platform 9042 toward the other lower side plate 2022, and the size of the second inserting platform 9044 in the left and right direction is the same as the size of the second mounting platform 9042 in the left and right direction.

[0139] Reference Fig.19In some embodiments, a first slot 9081 is formed on the inner side surface of the third side plate 9022, the first slot 9081 is arranged along the left-right direction, and an opening is formed on the left side surface of the first slot 9081; a second slot is formed on the inner side surface of the fourth side plate 9023, the second slot is arranged along the left-right direction, and an opening is formed on the left side surface of the second slot.

[0140] Fig.25 A cross-sectional view of an optical connection component in an optical module provided according to some embodiments of the present disclosure Figure 2 , Fig.26 A cross-sectional view of an optical connection component in an optical module provided according to some embodiments of the present disclosure Figure 3 .like Fig.25 and Fig.26 As shown, when the connector 904 is fixed to the optical fiber fixing member 902, the first plug-in platform 9043 is inserted into the first slot 9081, and the second plug-in platform 9044 is inserted into the second slot, thereby achieving a fixed connection between the connector 904 and the optical fiber fixing member 902.

[0141] In some embodiments, when assembling the optical connection component 900, the connector 904 and the core assembly 905 are first fixedly connected through the pins and the sockets, and then the connector 904 and the core assembly 905 are inserted through the opening on the left side of the optical fiber fixing component 902, so that the core assembly 905 is inserted into the insertion portion 9021 of the optical fiber fixing component 902, and the connector 904 is fixed in the optical fiber fixing component 902 through the plug-in platform and the slot, thereby realizing the assembly of the optical fiber fixing component 902, the connector 904 and the core assembly 905.

[0142] After completing the assembly of the optical fiber fixing part 902, the connector 904 and the core assembly 905, the support frame 903 is fixedly installed on the circuit board 300, and then the positioning column at the bottom of the optical fiber fixing part 902 is inserted into the positioning hole on the circuit board 300 until the top surface of the support frame 903 abuts against the inner side surface of the second top plate 9020, so as to support the optical fiber fixing part 902 through the support frame 903 and realize the fixation of the optical fiber fixing part 902 and the circuit board 300.

[0143] In some embodiments, after the connector 904 is fixed in the optical fiber fixture 902 through the socket and the slot, in order to ensure the installation stability of the connector 904 and the core assembly 905, the left side of the connector 904 can be adhered to the right side of the support frame 903 to fix the connector 904 through the support frame 903.

[0144] After completing the assembly of the optical connection component 900, the first optical fiber ribbon connected to the first light emitting component 410 and the second optical fiber ribbon connected to the second light emitting component 420 are respectively inserted into the core assembly 905 through the support frame 903 and the connector 904, thereby realizing the optical connection between the first light emitting component 410, the second light emitting component 420 and the optical connection component 900.

[0145] In some embodiments, to protect the optical fiber fixture 902 , the optical connection component 900 further includes a cover 901 , which is buckled onto the circuit board 300 , and the optical fiber fixture 902 is placed in a cavity formed by the cover 901 and the circuit board 300 .

[0146] Fig. 27 is a structural diagram of a cover in an optical module provided according to some embodiments of the present disclosure, Fig.28 A cross-sectional view of an optical connection component in an optical module provided according to some embodiments of the present disclosure Figure 3 .like Fig. 27 and Fig.28 As shown, the cover body 901 includes a third top plate 9010, a first side wall 9011 and a second side wall 9012. The first side wall 9011 and the second side wall 9012 are fixedly connected to the third top plate 9010 respectively. The first side wall 9011 and the second side wall 9012 are arranged opposite to each other. The third top plate 9010, the first side wall 9011 and the second side wall 9012 form a U-shaped cover body, so that the left side and the right side of the cover body 901 are formed with openings to facilitate covering the cover body 901 on the optical fiber fixing part 902.

[0147] In some embodiments, a first positioning member 9013 is formed on the inner side surface of the first side wall 9011, and the first positioning member 9013 may be a column extending from the inner side surface of the third top plate 9010 toward the direction of the circuit board 300; a first limiting column 9015 is also formed on the inner side surface of the first side wall 9011, and the first limiting column 9015 extends from the inner side surface of the third top plate 9010 toward the direction of the circuit board 300, and the first positioning member 9013 and the first limiting column 9015 are arranged in the left and right directions.

[0148] A second positioning member is formed on the inner side surface of the second side wall 9012, and the second positioning member extends from the inner side surface of the third top plate 9010 toward the direction of the circuit board 300; a second limiting column is also formed on the inner side surface of the second side wall 9012, and the second limiting column extends from the inner side surface of the third top plate 9010 toward the direction of the circuit board 300, and the second positioning member and the second limiting column are arranged in the left-right direction.

[0149] Reference Fig.18A first positioning groove 9027 is formed on the outer surface of the third side plate 9022, and the first positioning groove 9027 extends from the top surface of the second top plate 9020 toward the circuit board 300, and the first positioning groove 9027 is close to the fifth side plate 9024; a first limiting groove 908 is also formed on the outer surface of the third side plate 9022, and the first limiting groove 908 is recessed in the outer surface of the third side plate 9022, and the upper side surface and the left side surface of the first limiting groove 908 form openings.

[0150] A second positioning groove 9028 is formed on the outer surface of the fourth side plate 9023, and the second positioning groove 9028 extends from the top surface of the second top plate 9020 toward the circuit board 300, and the second positioning groove 9028 is close to the fifth side plate 9024; a second limiting groove 909 is also formed on the outer surface of the fourth side plate 9023, and the second limiting groove 909 is recessed in the outer surface of the fourth side plate 9023, and the upper side surface and the left side surface of the second limiting groove 909 form openings.

[0151] When the cover body 901 is covered on the optical fiber fixing part 902 from top to bottom, the first positioning member 9013 is inserted into the first positioning groove 9027, and the second positioning member is inserted into the second positioning groove 9028 to realize the positioning connection between the cover body 901 and the optical fiber fixing part 902; the right side surface of the first limiting column 9015 abuts against the right side wall of the first limiting groove 908, and the right side surface of the second limiting column abuts against the right side wall of the second limiting groove 909, so as to realize the limitation of the cover body 901 and the optical fiber fixing part 902 in the left and right directions through the positioning groove and the limiting wall.

[0152] In some embodiments, the bottom surface of the first positioning member 9013 and the bottom surface of the second positioning member 9014 may be recessed in the bottom surfaces of the first side wall 9011 and the second side wall 9012. When the cover body 901 is buckled onto the circuit board 300, the bottom surface of the first positioning member 9013 and the bottom surface of the second positioning member 9014 are in contact with the front side of the circuit board, and the first side wall 9011 and the second side wall 9012 wrap around the side wall of the circuit board 300, so that the cover body 901 wraps around the circuit board 300 to facilitate the positioning and connection of the cover body 901.

[0153] In some embodiments, the size of the cover body 901 in the left-right direction may be larger than the size of the connecting part of the optical fiber fixing part 902 in the left-right direction, and the right side surface of the cover body 901 may be flush with the right side surface of the connecting part. When the optical fiber ribbon is inserted into the core assembly 905, the cover body 901 can protect the optical fiber ribbon.

[0154] In some embodiments, the cover body 901 can be moved independently, and the cover body 901 can also be fixed on the inner side of the upper shell 201. When the upper shell 201 is covered on the lower shell 202, the cover body 901 is buckled on the optical fiber fixing part 902 to protect the optical fiber ribbon and the optical fiber fixing part 902 through the cover body 901.

[0155] Fig.29 The present invention is an assembly cross-sectional view of a circuit board, a first light emitting component, a second light emitting component and an optical connecting component in an optical module provided according to some embodiments of the present disclosure. Fig.30 1 is a cross-sectional view of an optical module provided according to some embodiments of the present disclosure. Fig.29 and Fig.30 As shown, the first light emitting component 410 is flipped on the circuit board 300, and the first light emitting component 410 is electrically connected to the circuit board 300 through the first flexible circuit board 430, so that the first light emitting component 410 generates multiple optical signals; the second light emitting component 420 is flipped on the circuit board 300, and the second light emitting component 420 is electrically connected to the circuit board 300 through the second flexible circuit board 440, so that the second light emitting component 420 generates multiple optical signals.

[0156] The optical connecting component 900 is installed on the circuit board 300, and the optical connecting component 900 and the gold finger 301 are located on the same side of the circuit board 300. The first light emitting component 410 is connected to the optical connecting component 900 through the first optical fiber ribbon, and the second light emitting component 420 is connected to the optical connecting component 900 through the second optical fiber ribbon.

[0157] Then install the assembled circuit board 300, the first light emitting component 410, the second light emitting component 420 and the optical connecting component 900 into the lower shell 202, and then cover the upper shell 201 into the lower shell 202 to install the circuit board 300, the first light emitting component 410, the second light emitting component 420 and the optical connecting component 900 into the cavity formed by the upper shell 201 and the lower shell 202, thereby completing the assembly of the optical module.

[0158] The optical module is inserted into the host computer, the gold fingers on the circuit board 300 are electrically connected to the electrical connector in the host computer, and the optical connection component 900 is optically connected to the optical connector in the host computer, thereby realizing the optoelectronic connection between the optical module and the host computer.

[0159] The optical module provided by the embodiment of the present disclosure includes an upper shell, a lower shell, a circuit board, a first light emitting component, a second light emitting component and an optical connecting component. The upper shell is covered on the lower shell, and the upper shell and the lower shell form a cavity, and the cavity has only one opening; the circuit board is located in the cavity formed by the upper shell and the lower shell, and the gold finger on the right side of the circuit board is located in the opening; the optical connecting component is installed on the circuit board, and the optical connecting component is located in the opening, that is, the optical connecting component and the gold finger are located on the same side of the circuit board, so that the optical port and the electrical port of the optical module are located in the same opening; the first light emitting component and the second light emitting component are flipped on the circuit board, and the first light emitting component and the second light emitting component are arranged in the left-right direction, and the first light emitting component and the first flexible circuit board are close to each other. One end is electrically connected, and the other end of the first flexible circuit board is electrically connected to the first electrical socket on the left side of the circuit board through the first electrical plug, so that the first light emitting component is electrically connected to the circuit board through the first flexible circuit board, and the electrical signal transmitted by the host computer is transmitted to the first light emitting component via the circuit board and the first flexible circuit board, so that the first light emitting component generates an optical signal; the second light emitting component is electrically connected to one end of the second flexible circuit board, and the other end of the second flexible circuit board is electrically connected to the second electrical socket on the circuit board through the second electrical plug, so that the second light emitting component is electrically connected to the circuit board through the second flexible circuit board, and the electrical signal transmitted by the host computer is transmitted to the second light emitting component via the circuit board and the second flexible circuit board, so that the second light emitting component generates an optical signal.

[0160] The first optical emitting component is optically connected to the optical connecting component through the first optical fiber ribbon, and the second optical emitting component is optically connected to the optical connecting component through the second optical fiber ribbon. When the optical module is inserted into the host computer, the optical connecting component is optically connected to the optical connector in the host computer to transmit the optical signal generated by the first optical emitting component and the second optical emitting component to the host computer. The host computer can use the optical signal as a signal source for its own use, or it can separate an optical fiber from itself to transmit the optical signal to other devices.

[0161] The optical module provided by the embodiment of the present disclosure sets the optical port and the electrical port in the same opening of the optical module. When the optical module is inserted into a host computer, the optical port and the electrical port are respectively connected to the host computer. One-time plugging and unplugging realizes the optoelectronic connection between the optical module and the host computer, avoiding the coupling of the optical port with the optical fiber, making the coupling process between the optical port of the optical module and the host computer simple and improving the coupling efficiency.

[0162] 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 embodiments of the present disclosure.

Claims

1. An optical module, characterized in that: include: Lower housing; An upper shell, covering the lower shell, the upper shell and the lower shell forming a cavity, the cavity having only one opening; A circuit board is located in the cavity, and a gold finger is formed at one end of the circuit board; A first light emitting component is electrically connected to the circuit board, and the first light emitting component includes: A first transmitting housing, which is covered on the circuit board; A first light emitting assembly is installed in the first emitting housing, and the first light emitting assembly is used to generate an optical signal; A first flexible circuit board, one end of which is fixed to the first transmitting housing, the other end of which is electrically connected to the circuit board, and the first optical transmitting assembly is connected to the first flexible circuit board by wire bonding; A second light emitting component is electrically connected to the circuit board, and the second light emitting component includes: A second transmitting housing is covered on the circuit board; A second optical emission component is installed in the second emission housing, and the second optical emission component is used to generate an optical signal; A second flexible circuit board, one end of which is fixed to the second transmitting housing, the other end of which is electrically connected to the circuit board, and the second optical transmitting assembly is connected to the second flexible circuit board by wire bonding; An optical connection component is mounted on the circuit board, the optical connection component and the gold finger are located in the opening; the optical connection component is connected to the first optical emission component through a first optical fiber ribbon, the optical connection component is connected to the second optical emission component through a second optical fiber ribbon, and the first optical fiber ribbon passes through both sides of the second optical emission component and is connected to the optical connection component; wherein the optical connection component includes: A connector having an escape gap formed thereon, wherein the first optical fiber ribbon and the second optical fiber ribbon pass through the escape gap; The ferrule assembly is plugged and fixed with the connector, and the first optical fiber ribbon is connected with the second optical fiber ribbon and the ferrule assembly.

2. The optical module according to claim 1, characterized in that: The first launch housing comprises: A first top plate, facing the front side of the circuit board, the first light emitting assembly is mounted on the first top plate, one end of the first flexible circuit board is fixedly connected to the first top plate; a first boss is formed on the first top plate, the first boss is located at one end of the first top plate, and a side of the first flexible circuit board facing away from the circuit board is fixedly connected to the first boss; A first side plate, located on the circuit board, the first side plate supporting the first top plate; The second side plate is located on the circuit board, the second side plate is arranged opposite to the first side plate, and the second side plate supports the first top plate.

3. The optical module according to claim 2, characterized in that: The first top plate is also formed with: A first mounting surface, located on the first top plate, wherein the first mounting surface is recessed into the first boss; A second boss is located on the first top plate, the first mounting surface is located between the first boss and the second boss, and the second boss protrudes from the first mounting surface; The second mounting surface is located at the other end of the first top plate, the second boss is located between the first mounting surface and the second mounting surface, and the second mounting surface is recessed in the first mounting surface.

4. The optical module according to claim 3, characterized in that: The first light emitting assembly comprises: A laser group, comprising a plurality of lasers and a plurality of laser heat sinks, wherein the laser heat sink is mounted on the first mounting surface, the laser is mounted on the laser heat sink, and the laser is connected to the flexible circuit board by wire bonding; the laser group is used to generate signal light; A collimating lens group, mounted on the first mounting surface, the collimating lens group is located in the light emitting direction of the laser group, and the collimating lens group is used to convert the signal light generated by the laser into collimated light; A converging lens group is mounted on the second boss, and the converging lens group is used to convert the collimated light into converging light; The optical fiber bracket is installed on the second installation surface, the optical fiber ribbon is located in the optical fiber bracket, and the converged light is coupled into the optical fiber ribbon.

5. The optical module according to claim 4, characterized in that: The first light emitting assembly further comprises: The photoelectric detector group includes a plurality of photoelectric detectors, wherein the photosensitive surfaces of the photoelectric detectors are located in the light emitting direction of the back side of the laser, and the light receiving directions of the photoelectric detectors are arranged at a preset angle to the light emitting direction of the back side of the laser.

6. The optical module according to claim 5, characterized in that: The misalignment distance between the photoelectric detector and the back light emitting direction of the laser is 2-3 mm.

7. The optical module according to claim 1, characterized in that: A first electrical socket is provided on the circuit board, and the first electrical socket is electrically connected to the circuit board; A first electrical plug is disposed on a side of the first flexible circuit board facing the circuit board, and the first electrical plug is inserted into the first electrical socket to electrically connect the first flexible circuit board to the circuit board.

8. The optical module according to claim 1, characterized in that: The optical connection component also includes: An optical fiber fixing part is installed on the circuit board, the plug-in part is installed in the optical fiber fixing part, and the optical fiber fixing part is located in the opening; A support frame is installed on the circuit board, the support frame is located in the optical fiber fixing piece, and the support frame supports and connects the optical fiber fixing piece.

9. The optical module according to claim 8, characterized in that: The optical fiber fixing member comprises: A connecting portion, facing the second light emitting component, a positioning post is provided on a side of the connecting portion facing the circuit board, and the positioning post is inserted into a positioning hole of the circuit board; an opening is formed on a side of the connecting portion facing the second light emitting component, and the first optical fiber ribbon and the second optical fiber ribbon are inserted into the optical fiber fixing member through the opening; The inserting part is fixedly connected to the connecting part, the inserting part is located above the gold finger, a through hole is formed in the inserting part, the through hole is communicated with the inner cavity of the connecting part, and the ferrule assembly is inserted into the through hole.

10. The optical module according to claim 9, characterized in that: The optical connection component also includes: The cover body is disposed on the circuit board, the connecting portion is position-limitingly connected to the cover body, the connecting portion is located inside the cover body, and the inserting portion is located outside the cover body.

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