Optical module

Abstract

The invention discloses an optical module which comprises a shell formed by covering and connecting a lower shell and an upper shell, and an optical fiber adapter is located on one side of a circuit board. And an optical port baffle plate is arranged between the first lower side plate and the second lower side plate of the lower shell. The lower shell is divided into a first cavity and a second cavity by the optical port baffle. A limiting groove is formed in the first side wall of the upper shell, and the positioning rod sequentially penetrates through the first lower side plate, the limiting groove and the second lower side plate to achieve connection and fixation of the upper shell and the lower shell. The upper shell covers the first cavity, and the upper shell, the first lower side plate and the second lower side plate are connected with the optical port baffle to block the opening part of the second cavity, so that the electromagnetic shielding effect is improved. The connection mode is simple, screws do not need to pass through the circuit board, and the area of the circuit board is reduced. The optical port baffle plate is provided with an adaptive through hole, one side of the adaptive projection of the optical fiber adapter abuts against one side of the optical port baffle plate, and optical fiber communication between the inside and the outside of the optical module is realized on the premise of ensuring the electromagnetic shielding effect.

Description

Technical Field

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

[0002] Optical communication technology is used in new business models and application models such as cloud computing, mobile Internet, and video. In optical communication, optical modules are tools for converting photoelectric signals and are one of the key components in optical communication equipment.

[0003] There are many kinds of electrical components in the optical module. During operation, the electrical components generate electromagnetic waves, which can cause damage to the human body and the environment. The optical module is usually provided with an upper shell and a lower shell, through which the electrical components are sealed inside the shell. Summary of the invention

[0004] The present application provides an optical module to improve the optical module.

[0005] In order to solve the above technical problems, the embodiments of the present application disclose the following technical solutions:

[0006] On the one hand, an embodiment of the present application discloses an optical module, including:

[0007] Upper shell;

[0008] A lower shell body, which is connected to the upper shell body to form a shell body;

[0009] A circuit board is located between the upper housing and the lower housing;

[0010] An optical fiber adapter is located on one side of the circuit board, and the optical fiber adapter is provided with an adapting protrusion;

[0011] Wherein, the lower shell comprises:

[0012] A bottom plate, a first lower side plate and a second lower side plate arranged on both sides of the bottom plate;

[0013] A first lower side plate, located at one side of the bottom plate;

[0014] A second lower side plate connected to the bottom plate, wherein the second lower side plate and the first lower side plate are arranged on two sides of the bottom plate opposite to each other;

[0015] an optical port baffle, located between the first lower side plate and the second lower side plate, the optical port baffle dividing the lower shell into a first cavity and a second cavity; the circuit board is located in the second cavity;

[0016] The optical port baffle is provided with an adapting through hole, and the adapting through hole communicates the first cavity and the second cavity; one end of the optical fiber adapter extends to the first cavity through the adapting through hole; one side of the adapting protrusion abuts against one side of the optical port baffle,

[0017] The first side wall of the upper shell is provided with a limiting groove, and the positioning rod passes through the first lower side plate, the limiting groove and the second lower side plate in sequence;

[0018] The upper shell covers the upper part of the first cavity.

[0019] On the other hand, an embodiment of the present application discloses an optical module, including: a cover plate;

[0020] A lower shell body, connected with the cover plate to form a shell body;

[0021] A circuit board, located between the cover plate and the lower shell;

[0022] An optical fiber adapter is located on one side of the circuit board, and the optical fiber adapter is provided with an adapting protrusion;

[0023] An unlocking component, the unlocking component is connected to the lower housing; and the unlocking component does not contact the upper housing;

[0024] Wherein, the lower shell comprises:

[0025] A bottom plate, a first lower side plate and a second lower side plate arranged on both sides of the bottom plate;

[0026] A first lower side plate, located at one side of the bottom plate;

[0027] A second lower side plate connected to the bottom plate, wherein the second lower side plate and the first lower side plate are arranged on two sides of the bottom plate opposite to each other;

[0028] an optical port baffle, located between the first lower side plate and the second lower side plate, the optical port baffle dividing the lower shell into a first cavity and a second cavity; the circuit board is located in the second cavity;

[0029] The optical port baffle is provided with an adapting through hole, and the adapting through hole communicates the first cavity and the second cavity; one end of the optical fiber adapter extends to the first cavity through the adapting through hole; one side of the adapting protrusion abuts against one side of the optical port baffle,

[0030] The first side wall of the upper shell is provided with a limiting groove, and the positioning rod passes through the first lower side plate, the limiting groove and the second lower side plate in sequence;

[0031] The cover plate covers the upper part of the second cavity;

[0032] The first clamping plate is located above the optical port baffle, and the upper shell is against one side of the second clamping plate.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] The present application discloses an optical module, comprising: a shell formed by a lower shell and an upper shell covering and connecting, a fiber optic adapter is located on one side of a circuit board, and the fiber optic adapter is provided with an adapting protrusion. An optical port baffle is provided between the first lower side plate and the second lower side plate of the lower shell. The optical port baffle divides the lower shell into a first cavity and a second cavity, and the circuit board is located in the second cavity. A limiting groove is provided on the first side wall of the upper shell, and the positioning rod passes through the first lower side plate, the limiting groove and the second lower side plate in sequence to realize the connection and fixation between the upper shell and the lower shell. The upper shell covers the top of the first cavity, and the upper shell, the first lower side plate, and the second lower side plate are connected to the optical port baffle to block the opening of the second cavity to improve the electromagnetic shielding effect. This connection method is simple, does not require screws to pass through the circuit board, and reduces the area of ​​the circuit board. The optical port baffle is provided with an adapting through hole, which connects the first cavity and the second cavity; one end of the optical fiber adapter extends to the first cavity through the adapting through hole; one side of the adapting protrusion abuts against one side of the optical port baffle, thereby realizing optical fiber communication between the inside and outside of the optical module while ensuring the electromagnetic shielding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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 limitations on 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.

[0036] Figure 1 is a partial architecture diagram of an optical communication system according to some embodiments;

[0037] Figure 2 is a partial structural diagram of a host computer according to some embodiments;

[0038] Figure 3 is a structural diagram of an optical module according to some embodiments;

[0039] Figure 4 is an exploded view of an optical module according to some embodiments;

[0040] Figure 5 The lower shell structure provided according to some embodiments of the present application is shown in FIG. Figure 1 ;

[0041] Figure 6 The lower shell structure provided according to some embodiments of the present application is shown in FIG. Figure 2 ;

[0042] Figure 7 Schematic diagram of the cross-sectional structure of the lower shell provided according to some embodiments of the present application Figure 1 ;

[0043] Figure 8 It is a schematic diagram of the structure of a metal clamp provided according to some embodiments of the present application;

[0044] Fig. 9 A schematic diagram of the structure of an optical transceiver component provided according to some embodiments of the present application;

[0045] Fig.10 A schematic diagram of the connection between the optical transceiver component and the lower housing according to some embodiments of the present application;

[0046] Fig.11 A schematic diagram of the connection between an optical transceiver component, a metal clamp and a lower housing according to some embodiments of the present application;

[0047] Fig.12 It is a cross-sectional schematic diagram of a metal card, a lower housing, and an optical transceiver component provided according to some embodiments of the present application;

[0048] Fig.13 The structure of the upper shell provided according to some embodiments of the present application is shown in FIG. Figure 1 ;

[0049] Fig.14 The structure of the upper shell provided according to some embodiments of the present application is shown in FIG. Figure 2 ;

[0050] Fig.15 It is a schematic cross-sectional view of an upper shell and a lower shell provided according to some embodiments of the present application;

[0051] Fig.16 A schematic diagram of the structure of a circuit board and an optical transceiver component provided according to some embodiments of the present application;

[0052] Fig.17 A partial cross-sectional schematic diagram of an optical module provided according to some embodiments of the present application. DETAILED DESCRIPTION

[0053] Optical communication technology establishes information transmission between information processing devices. Optical communication technology loads information onto light and uses the propagation of light to achieve information transmission. Light loaded with information is an optical signal. When optical signals propagate in information transmission equipment, they can reduce the loss of optical power and achieve high-speed, long-distance, and low-cost information transmission. Information that can be processed by information processing equipment exists in the form of electrical signals. Optical network terminals / gateways, routers, switches, mobile phones, computers, servers, tablets, and televisions are common information processing devices, and optical fibers and optical waveguides are common information transmission equipment.

[0054] The mutual conversion of optical signals and electrical signals between information processing equipment and information transmission equipment is realized through optical modules. For example, an optical fiber is connected to the optical signal input end and / or the optical signal output end of the optical module, and an optical network terminal is connected to the electrical signal input end and / or the electrical signal output end of the optical module; the first optical signal from the optical fiber is transmitted into the optical module, the optical module converts the first optical signal into a first electrical signal, and the optical module transmits the first electrical signal into the optical network terminal; the second electrical signal from the optical network terminal is transmitted into the optical module, the optical module converts the second electrical signal into a second optical signal, and the optical module transmits the second optical signal into the optical fiber. Since information processing devices can be connected to each other through an electrical signal network, at least one type of information processing device needs to be directly connected to the optical module, and it is not necessary for all types of information processing devices to be directly connected to the optical module. The information processing device directly connected to the optical module is called the host computer of the optical module.

[0055] Figure 1 FIG. 1 is a partial architecture diagram of an optical communication system according to some embodiments. Figure 1 As shown, the optical communication system is partially presented as a remote information processing device 1000 , a local information processing device 2000 , a host computer 100 , an optical module 200 , an optical fiber 101 and a network cable 103 .

[0056] One end of the optical fiber 101 extends toward the remote information processing device 1000, and the other end is connected to the optical interface of the optical module 200. The optical signal can be totally reflected in the optical fiber 101, and the propagation of the optical signal in the direction of total reflection can almost maintain the original optical power. The optical signal is totally reflected multiple times in the optical fiber 101, and the optical signal from the direction of the remote information processing device 1000 is transmitted into the optical module 200, or the light from the optical module 200 is propagated toward the remote information processing device 1000, so as to realize long-distance and low-power-loss information transmission.

[0057] The number of optical fibers 101 may be one or more (two or more); the optical fiber 101 and the optical module 200 may be connected in a pluggable movable manner or in a fixed manner.

[0058] The host computer 100 has an optical module interface 102, which is configured to access the optical module 200, so that the host computer 100 establishes a unidirectional / bidirectional electrical signal connection with 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 and control the working status of the optical module 200.

[0059] The host computer 100 has an external electrical interface, such as a universal serial bus interface (USB) and a network cable interface 104, which can be connected to an electrical signal network. For example, the network cable interface 104 is configured to connect to the network cable 103, so that the host computer 100 and the network cable 103 establish a unidirectional / bidirectional electrical signal connection.

[0060] Optical network terminal (ONU, Opticl Network Unit), optical line terminal (OLT, Opticl LineTerminl), optical network equipment (ONT, Opticl Network Terminl) and data center servers are common host computers.

[0061] One end of the network cable 103 is connected to the local information processing device 2000 , and the other end is connected to the host computer 100 . The network cable 103 establishes an electrical signal connection between the local information processing device 2000 and the host computer 100 .

[0062] For example, the third electrical signal emitted by the local information processing device 2000 is transmitted to the host computer 100 through the network cable 103. The host computer 100 generates a second electrical signal based on the third electrical signal. The second electrical signal from the host computer 100 is transmitted to the optical module 200. The optical module 200 converts the second electrical signal into a second optical signal. The optical module 200 transmits the second optical signal into the optical fiber 101. The second optical signal is transmitted to the remote information processing device 1000 in the optical fiber 101.

[0063] For example, a first optical signal from the direction of a remote information processing device 1000 propagates through the optical fiber 101, the first optical signal from the optical fiber 101 is transmitted into the optical module 200, the optical module 200 converts the first optical signal into a first electrical signal, the optical module 200 transmits the first electrical signal into the host computer 100, the host computer 100 generates a fourth electrical signal based on the first electrical signal, and the host computer 100 transmits the fourth electrical signal to the local information processing device 2000.

[0064] The optical module is a tool for realizing the mutual conversion between optical signals and electrical signals. During the conversion process between optical signals and electrical signals, the information does not change, but the encoding and decoding method of the information can change.

[0065] Figure 2FIG. 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 structures related to the host computer 100 and the optical module 200 are shown. Figure 2 As shown, the host computer 100 also includes a PCB circuit board 105 arranged in the shell, a cage 106 arranged on the surface of the PCB circuit board 105, a heat sink 107 arranged on the cage 106, and an electrical connector (not shown in the figure) arranged inside the cage 106. The heat sink 107 has a protruding structure that increases the heat dissipation area, and the fin-shaped structure is a common protruding structure.

[0066] 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 interface of the optical module 200 is connected to the electrical connector inside the cage 106.

[0067] 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 housing (shell), a circuit board 300 disposed in the housing, a light emitting component, and a light receiving component. However, the present disclosure is not limited thereto. In some embodiments, the optical module 200 includes one of the light emitting component and the light receiving component. The optical transceiver component includes one of the light emitting component and the light receiving component, or both of the light emitting component and the light receiving component.

[0068] The housing comprises an upper housing 201 and a lower housing 202 . The upper housing 201 covers the lower housing 202 to form the housing having two openings 204 and 205 . The outer contour of the housing is generally a square body.

[0069] In some embodiments, the lower shell 202 includes a bottom plate 2021 and two lower side plates located on both sides of the bottom plate 2021 and arranged perpendicular to the bottom plate 2021; the upper shell 201 includes a cover plate 2011, and the cover plate 2011 is covered on the two lower side plates of the lower shell 202 to form the above-mentioned shell.

[0070] In some embodiments, the lower shell 202 includes a bottom plate 2021 and two lower side plates located on both sides of the bottom plate 2021 and vertically arranged with the bottom plate 2021; the upper shell 201 includes a cover plate 2011 and two upper side plates located on both sides of the cover plate 2011 and vertically arranged with the cover plate 2011, and the two upper side plates are combined with the two lower side plates to realize that the upper shell 201 covers the lower shell 202.

[0071] 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 is also located at the end of the optical module 200 ( Figure 3 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 interface, and the gold finger 301 of the circuit board 300 extends from the electrical interface and is inserted into the electrical connector of the host computer; the opening 205 is an optical port, which is configured to access the optical fiber 101 so that the optical fiber 101 is connected to the optical emitting component and / or the optical receiving component in the optical module 200.

[0072] The assembly method of combining the upper shell 201 and the lower shell 202 is adopted, so that the components such as the circuit board 300, the light emitting component, and the light receiving component can be easily installed in the above shell, and the upper shell 201 and the lower shell 202 can encapsulate and protect the shapes of these components. In addition, when assembling the components such as the circuit board 300, the light emitting component and the light receiving component, it is convenient to deploy the positioning components, heat dissipation components, and electromagnetic shielding components of these devices, which is conducive to the automated production.

[0073] In some embodiments, the upper shell 201 and the lower shell 202 are made of metal materials to facilitate electromagnetic shielding and heat dissipation.

[0074] In some embodiments, the optical module 200 further includes an unlocking component 600 located outside its housing. The unlocking component 600 is configured to achieve a fixed connection between the optical module 200 and the host computer, or to release the fixed connection between the optical module 200 and the host computer.

[0075] For example, the unlocking component 600 is located on the bottom plate of the lower housing 202, and includes a snap-fit ​​component that matches the cage 106 of the host computer. 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 snap-fit ​​fixed connection between the optical module 200 and the host computer, so that the optical module 200 can be pulled out of the cage 106.

[0076] In some embodiments, the optical module 200 further includes an elastic component 700 located outside its housing, the elastic component 700 is sleeved on the outside of the housing, the metal frame of the elastic component 700 contacts the outer walls of the upper housing 201 and the lower housing 202, and the metal spring of the elastic component 700 contacts the inner side of the cage 106, thereby achieving contact between the housing and the cage 106. A closed metal cavity is formed between the metal part of the elastic component 700, the housing, the elastic component and the cage 106 to shield the electromagnetic waves between the cage and the housing, and prevent the electromagnetic waves from leaking out of the cage.

[0077] The circuit board 300 includes circuit traces, electronic components and chips, etc. The electronic components and chips are connected together 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, triodes, metal-oxide-semiconductor field-effect transistors (MOSFET), etc. The chips may include microcontroller units (MCU), laser driver chips, transimpedance amplifiers (TIA), limiting amplifiers, clock and data recovery chips (CDR), power management chips, and digital signal processing (DSP) chips.

[0078] 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 is also easy to insert into the electrical connector in the upper computer cage.

[0079] The circuit board 300 further includes a gold finger 301 formed on the end surface thereof, and the gold finger 301 is composed of a plurality of independent pins. The circuit board 300 is inserted into the cage 106, and the gold finger 301 is connected to the electrical connector in the cage 106. The gold finger 301 can be provided on only one side of the circuit board 300 (e.g. Figure 4 The gold finger 301 is configured to establish an electrical connection with the host computer to achieve power supply, grounding, I2C signal transmission, data signal transmission, etc.

[0080] 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.

[0081] The light emitting component and / or the light receiving component are located on a side of the circuit board 300 away from the gold finger 301; in some embodiments, the light emitting component and the light receiving component are physically separated from the circuit board 300, and then electrically connected to the circuit board 300 through corresponding flexible circuit boards or electrical connectors; in some embodiments, the light emitting component and / or the light receiving component can be directly set on the circuit board 300, can be set on the surface of the circuit board, and can also be set on the side of the circuit board.

[0082] like Figure 4 As shown in FIG. 1 , the optical transceiver component 400 is located on a side of the circuit board 300 away from the gold finger 301 . The optical transceiver component 400 is provided with a first optical fiber adapter and a second optical fiber adapter, and the first optical fiber adapter and the second optical fiber adapter are used to receive or transmit optical signals.

[0083] The optical module is also provided with a metal clip 800, which is connected to the lower shell 202, and the upper surface of the metal clip is in contact with the inside of the cover plate, so that the metal clip is located between the gap between the upper shell and the lower shell, shielding the electromagnetic waves between the cage and the shell, and preventing external electromagnetic waves from entering the interior of the optical module.

[0084] Figure 5 The lower shell structure provided according to some embodiments of the present application is shown in FIG. Figure 1 . Figure 6 The lower shell structure provided according to some embodiments of the present application is shown in FIG. Figure 2 . Figure 7 Schematic diagram of the cross-sectional structure of the lower shell provided according to some embodiments of the present application Figure 1 .like Figure 5 , Figure 6 and Figure 7 As shown, the lower housing includes a bottom plate 2021, a first lower side plate 2022 arranged on one side of the bottom plate, and a second lower side plate 2023 arranged on the opposite side of the first lower side plate. The lower housing is provided with an optical port baffle 2024, which is located between the first lower side plate and the second lower side plate, and the bottom of the optical port baffle 2024 is connected to the bottom plate. The optical port baffle 2024, the first lower side plate, the second lower side plate and the bottom plate are enclosed to form a semi-enclosed structure. The optical port baffle 2024 divides the lower housing into a first cavity and a second cavity, wherein the upper housing covers the top of the first cavity 2025 to form an optical inner cavity.

[0085] The optical port baffle 2024 is provided with a first adapting through hole 20241 and a second adapting through hole 20242. One end of the first optical fiber adapter 410 extends to the second cavity through the first adapting through hole 20241. The circuit board is located in the first cavity. The first adapting through hole 20241 and the second adapting through hole 20242 cause electromagnetic waves to leak into the second cavity. One end of the second optical fiber adapter 420 extends to the second cavity through the second adapting through hole 20242.

[0086] The adapting through hole wraps the outer wall of the optical fiber adapter, and the adapting through hole is a circular through hole structure. Compared with the through hole formed by the upper shell and the lower shell covering, there is no gap on the outside of the adapting through hole of the present application, which reduces the leakage of electromagnetic waves.

[0087] To facilitate the fixed connection between the optical fiber adapter and the lower housing, the optical fiber adapter is provided with an adapting protrusion, which protrudes from the outer surface of the optical fiber adapter. An adapting fixing component is provided on one side of the optical port baffle 2024, and the adapting protrusion is fixed to the adapting fixing part 2027.

[0088] For example, the first fiber adapter 410 is provided with a first adapting protrusion 411 protruding from the outer surface of the first fiber adapter 410 , and the second fiber adapter 420 is provided with a second adapting protrusion 421 protruding from the outer surface of the second fiber adapter 420 .

[0089] In some embodiments, the outer surface of the first fiber optic adapter 410 is cylindrical, the first adapting protrusion 411 is cylindrical, and the first adapting protrusion 411 is concentrically arranged with the first fiber optic adapter 410. The outer surface of the second fiber optic adapter 420 is cylindrical, the second adapting protrusion 421 is cylindrical, and the second adapting protrusion 421 is concentrically arranged with the second fiber optic adapter 420.

[0090] The adapting fixing portion 2027 is located in the first cavity, and the upper surface of the adapting fixing portion is lower than the upper surface of the light port baffle 2024. The adapting fixing portion 2027 has an adapting groove with an opening toward the upper shell. For example, the adapting fixing portion 2027 has a first adapting groove 20271 and a second adapting groove 20272. The first adapting protrusion 411 is embedded in the first adapting groove 20271, and the second adapting protrusion 421 is embedded in the second adapting groove 20272.

[0091] A first limiting protrusion 20243 is provided on the upper surface of the light port baffle 2024 , and the upper surface of the first limiting protrusion 20243 protrudes from the upper surface of the light port baffle 2024 .

[0092] A first check portion 20273 and a second check portion 20274 are provided on both sides of the first adapting groove 20271. The first adapting groove limits the position of the first adapting protrusion. The first adapting protrusion is located between the first check portion 20273 and the second check portion 20274. An isolation portion 20275 is provided between the first adapting groove 20271 and the second adapting groove 20272.

[0093] The metal clamp 800 is in contact with the upper surface of the adapter fixing portion 2027 to block the gap between the adapter fixing portion 2027 and the upper shell.

[0094] Figure 8 This is a schematic diagram of the structure of a metal clip provided according to some embodiments of the present application. Fig. 9 FIG. 1 is a schematic diagram of the structure of an optical transceiver component provided according to some embodiments of the present application. Figure 8 , Fig. 9 As shown, the metal clamp 800 includes: a first clamp 810 and a second clamp 820 that are relatively bent. The first clamp 810 is provided with a limiting hole 811, and the first limiting protrusion 20243 is embedded in the limiting hole 811 to achieve the limiting of the metal clamp 800 and prevent the metal clamp 800 from moving in the length and width directions of the optical module. The second clamp 820 is provided with a first yielding portion 821, a second yielding portion 822 and a third yielding portion 823. The first yielding portion 821 is located inside the first adapting groove 20271, and the first yielding portion 821 is fixed to the outside of the first adapting protrusion. The second yielding portion 822 is located inside the second adapting groove 20272, and the second yielding portion 822 is fixed to the outside of the second adapting protrusion. The third yielding portion 823 is located between the first yielding portion 821 and the second yielding portion 822. The isolation portion 20275 is embedded in the third yielding portion 823. The second clamping plate of the metal clamping member 800 blocks the gap between the optical fiber adapter and the adapting groove to prevent electromagnetic waves from leaking through the optical port position, thereby improving the electromagnetic shielding effect of the optical module.

[0095] For example, the first side wall of the upper shell is connected to the other side of the adapter protrusion. For example, the second card plate is located between the adapter protrusion and the first side wall of the upper shell, which is beneficial to improve the electromagnetic shielding effect of the optical port position.

[0096] The first clamping plate is located above the optical port baffle 2024, and the surface of the optical port baffle 2024 is a flat structure, which is convenient for the installation and fixation of the first clamping plate. The first limiting protrusion 20243 is embedded in the limiting hole 811 to achieve the limiting of the metal clamp 800 and the optical port baffle 2024, and prevent the metal clamp 800 and the optical port baffle 2024 from moving in the length and width direction of the optical module. The elastic component 700 is pressed on the upper surface of the metal clamp 800.

[0097] In order to further realize the installation of the metal clamp 800, the upper surface of the adapter fixing part 2027 is lower than the upper surface of the light port baffle 2024, the lower surface of the first clamp plate 810 of the metal clamp 800 is connected to the upper surface of the adapter fixing part 2027, and the upper surface of the first clamp plate 810 is connected to the upper shell.

[0098] For example, the first fiber adapter 410 is provided with a first adapting protrusion 411 protruding from the outer surface of the first fiber adapter 410 , and the second fiber adapter 420 is provided with a second adapting protrusion 421 protruding from the outer surface of the second fiber adapter 420 .

[0099] In some embodiments, the outer surface of the first fiber optic adapter 410 is cylindrical, the first adapting protrusion 411 is cylindrical, and the first adapting protrusion 411 is concentrically arranged with the first fiber optic adapter 410. The outer surface of the second fiber optic adapter 420 is cylindrical, the second adapting protrusion 421 is cylindrical, and the second adapting protrusion 421 is concentrically arranged with the second fiber optic adapter 420.

[0100] The adapting fixing portion 2027 is located in the first cavity, and the upper surface of the adapting fixing portion is lower than the upper surface of the light port baffle 2024. The adapting fixing portion 2027 has an adapting groove with an opening toward the upper shell. For example, the adapting fixing portion 2027 has a first adapting groove 20271 and a second adapting groove 20272. The first adapting protrusion 411 is embedded in the first adapting groove 20271, and the second adapting protrusion 421 is embedded in the second adapting groove 20272.

[0101] In some embodiments, an adapter slot is provided between the adapter protrusion and the lens component, and the check portion is embedded in the adapter slot. For example, a first adapter slot 413 is provided between the first adapter protrusion and the lens component, and the first check portion is embedded in the first adapter slot to achieve positioning of the optical transceiver component.

[0102] Fig.10 This is a schematic diagram of the connection between the optical transceiver component and the lower housing according to some embodiments of the present application. Fig.11 This is a schematic diagram of the connection between the optical transceiver component, the metal clamp and the lower shell provided according to some embodiments of the present application. Fig.12 Schematic cross-sectional view of a metal clamp, a lower housing, and an optical transceiver component provided according to some embodiments of the present application. Fig.10 , Fig.11 and Fig.12As shown, one end of the first optical fiber adapter 410 extends through the first easing portion to the first adapting groove 20271, passes through the first adapting through hole, and then enters the first cavity. At this time, the first adapting protrusion 411 is embedded in the first adapting groove 20271, and the second clamping plate is located in the first adapting groove 20271, and the second clamping plate is located between the first adapting protrusion 411 and the first non-return portion.

[0103] The upper surface of the optical port baffle 2024 is provided with a first limiting protrusion 20243, and the upper surface of the first limiting protrusion 20243 protrudes from the upper surface of the optical port baffle 2024. The first limiting protrusion 20243 is embedded in the limiting hole 811 to achieve the limiting of the metal clamp 800.

[0104] In the embodiment of the present application, an optical port baffle is provided at the optical port position of the lower shell, and the optical port baffle has a channel connected to the outside of the optical port only at the adapter through hole in the length direction, and electromagnetic leakage only exists at the adapter through hole. The optical fiber adapter blocks the adapter through hole, especially the diameter of the adapter protrusion is larger than the diameter of the adapter through hole, and the adapter through hole is completely blocked. The second card plate position of the metal card forms an electromagnetic shielding between the adapter protrusion and the adapter groove in the direction of the optical port, thereby improving the electromagnetic shielding effect of the optical module. The upper shell is located on one side of the second card plate, and the second card plate limits the upper shell in the length direction.

[0105] Fig.13 The structure of the upper shell provided according to some embodiments of the present application is shown in FIG. Figure 1 . Fig.14 The structure of the upper shell provided according to some embodiments of the present application is shown in FIG. Figure 2 . Fig.15 Schematic diagram of the cross-section of the upper shell and the lower shell provided according to some embodiments of the present application. Fig.13 , Fig.14 Shown and Fig.15 To achieve the connection between the upper shell and the lower shell, the first lower side plate 2022 is provided with a first elastic slot 20221, which is recessed inward relative to the first lower side plate. The second lower side plate 2023 is provided with a second elastic slot 20231, which is recessed inward relative to the second lower side plate.

[0106] The first elastic slot 20221 is provided with a first limiting through hole 20222, and the second elastic slot 20231 is provided with a second limiting through hole 20232. The first side wall of the upper shell is provided with a limiting groove 20115, and the positioning rod 203 extends into the limiting groove 20115 through the first limiting through hole 20222 and then enters the second limiting through hole 20232, and the positioning rod 203 connects the upper shell with the lower shell.

[0107] In some embodiments of the present application, the first side wall of the upper housing is a side wall facing the optical port, and the opening direction of the limit groove 20115 faces the optical port. The lower housing is further provided with a limit baffle 2028, and the upper surface of the limit baffle 2028 protrudes from the upper surface of the optical port baffle 2024. The first side wall of the upper housing abuts against one side of the metal clamp 800, and the lower surface of the upper housing is connected to the optical transceiver component, so that the metal clamp 800 is in contact with the optical port baffle 2024.

[0108] In some embodiments of the present application, the upper surface of the upper shell is provided with a first recessed area 20113, and the first recessed area 20113 is lower than the upper surface of the cover plate 2011. Both sides of the first recessed area 20113 are higher than the bottom of the first recessed area 20113, and the elastic sheet of the elastic component 700 is embedded in the first recessed area 20113. Both sides of the first recessed area 20113 limit the elastic sheet of the elastic component 700, thereby realizing the installation and fixation of the elastic component and the upper shell.

[0109] To achieve the positioning of the optical transceiver component, the upper surface of the first optical fiber adapter 410 is a first step surface, which is a plane and connected to the upper shell. The upper surface of the second optical fiber adapter 420 is a second step surface, which is a plane and connected to the upper shell.

[0110] The lower surface of the cover plate 2011 protrudes downward to form a contact portion 20114 . The lower surface of the contact portion 20114 protrudes from the lower surface of the cover plate 2011 , and the lower surface of the contact portion 20114 is connected to the first step surface 412 and the second step surface 422 .

[0111] The second side wall of the cover plate 2011 is provided with a first shielding recessed area 20111, and the opening of the first shielding recessed area 20111 faces the first lower side plate 2022. A first shielding component is provided in the gap formed by the first shielding recessed area 20111 and the first lower side plate 2022. In the embodiment, the first shielding component is a flexible component, which is filled in the gap formed by the first shielding recessed area 20111 and the first lower side plate 2022 to improve the anti-shielding effect of the optical module. A second shielding component is provided in the gap formed by the second shielding recessed area 20112 and the second lower side plate 2023. In the embodiment, the second shielding component is a flexible component, which is filled in the gap formed by the second shielding recessed area 20112 and the second lower side plate 2023 to improve the anti-shielding effect of the optical module.

[0112] The lower surface of the cover plate 2011 is provided with a first shielding baffle 2016, and the lower surface of the first shielding baffle 2016 is connected to the upper surface of the circuit board 300. The lower shell has a first supporting portion 20211, and the first supporting portion 20211 is located adjacent to the first non-return portion 20273, and the upper surface of the first supporting portion 20211 is lower than the upper surface of the first non-return portion 20273. The circuit board is located above the first supporting portion 20211. The first shielding baffle runs through the width direction of the upper shell.

[0113] The lower housing has a second support portion, which is located on the opposite side of the first support portion 20211 (not shown in the figure), and the upper surface of the second support portion is lower than the upper surface of the first check portion 20273. The circuit board is located above the second support portion, and the first support portion and the second support portion support the head of the circuit board 300. The head of the circuit board 300 is the position of the circuit board adjacent to the optical port, and the tail of the circuit board is the position of the circuit board adjacent to the electrical port.

[0114] One side of the circuit board 300 abuts against one side of the adapter fixing portion 2027, and the adapter fixing portion 2027 limits the movement of the circuit board in the length direction. The optical transceiver component is located between the circuit board and the upper housing, which limits the movement of the circuit board in the height direction. In this example, no screws are used to fix the circuit board and the housing, which reduces the space of the circuit board and improves the miniaturization of the optical module.

[0115] In this example, the length direction is the connection direction of the optical port and the electrical port, the width direction is perpendicular to the first lower side plate, and the height direction is perpendicular to the bottom plate.

[0116] The bottom plate of the lower housing is provided with a third support portion 20213, and the circuit board 300 is located above the third support portion 20213. A first housing baffle 20214 is provided on one side of the third support portion 20213, and the upper surface of the first housing baffle 20214 is higher than the upper surface of the third support portion 20213. The upper surface of the first housing baffle 20214 is lower than the upper surface of the second lower side plate.

[0117] The bottom plate of the lower housing is provided with a fifth support portion, and the circuit board 300 is located above the fifth support portion. A second housing baffle is provided on one side of the fifth support portion, and the upper surface of the second housing baffle is higher than the upper surface of the fifth support portion. The upper surface of the second housing baffle is lower than the upper surface of the first lower side plate.

[0118] Fig.16 The schematic diagram of the structure of the circuit board and the optical transceiver component provided according to some embodiments of the present application is as follows: Fig.16 As shown, the circuit board 300 is provided with a first corner 311 and a second corner 312. For example, the first corner 311 is adjacent to the first lower side plate 2022, and the second corner 312 is adjacent to the second lower side plate 2023.

[0119] The two ends of the first shielding baffle 2016 extend toward the optical port to form a second shielding baffle 2017 and a third shielding baffle 2018. The second shielding baffle 2017 is adjacent to the first lower side plate, and the third shielding baffle is adjacent to the second lower side plate. The lower surface of the second shielding baffle 2017 is provided with: a first circuit baffle 20161 and a second limiting protrusion 20163. The first circuit baffle 20161 is perpendicular to the cover plate and extends toward the second lower side plate. The first circuit baffle 20161 extends into the gap between the first corner 311 and the first shell baffle 20214. The first corner 311 and the first shell baffle 20214 limit the first circuit baffle 20161 in the length direction.

[0120] One side of the first circuit baffle 20161 is connected to the first corner 311 , and the other side of the first circuit baffle 20161 abuts against the side wall of the first shell baffle 20214 .

[0121] The circuit board 300 is further provided with a third limiting hole 313 and a fourth limiting hole 314. The third limiting hole 313 is adjacent to the first lower side plate, and the fourth limiting hole 314 is adjacent to the second lower side plate. One end of the second limiting protrusion 20163 is embedded in the third limiting hole 313, and the second limiting protrusion 20163 is connected with the third limiting hole 313 in a matching manner. In some examples, the third limiting hole 313 is a circular structure, and the second limiting protrusion 20163 is a columnar structure or a spherical protrusion matching the third limiting hole 313.

[0122] The lower surface of the third shielding baffle 2018 is provided with: a second circuit baffle 20162 and a third limiting protrusion 20164, the second circuit baffle 20162 is perpendicular to the cover plate and extends in the direction of the first lower side plate. The second circuit baffle 20162 extends into the gap between the second corner and the second shell baffle, and the second corner 312 and the second shell baffle form a limit on the second circuit baffle 20162 in the length direction. One end of the third limiting protrusion 20164 is embedded in the fourth limiting hole 314, and the third limiting protrusion 20164 is connected with the fourth limiting hole 314. In some examples, the fourth limiting hole 314 is a circular structure, and the third limiting protrusion 20164 is a columnar structure or a spherical protrusion matching the fourth limiting hole 314. The fourth limiting hole 314 can also be a square structure, and the third limiting protrusion 20164 is a shape matching the fourth limiting hole 314.

[0123] To further improve the electromagnetic shielding effect of the optical module, the third limiting hole 313 and the fourth limiting hole 314 are coated with a metal layer, and one end of the second limiting protrusion 20163 is embedded in the third limiting hole 313, so that the circuit board is connected to the upper shell through the metal layer, thereby improving the electromagnetic shielding effect of the optical module.

[0124] A metal layer is provided on the surfaces of the first corner 311 and the second corner 312 , and the metal layer is connected to the first circuit baffle 20161 and the second circuit baffle 20162 to improve the electromagnetic shielding effect of the optical module.

[0125] The lower shell is also provided with a second electrical port baffle, the second electrical port baffle 2028 protrudes above the bottom plate, and the circuit board is located above the second electrical port baffle. The second electrical port baffle 2028 corresponds to the position of the first shielding baffle, and the circuit board is located between the second electrical port baffle 2028 and the first shielding baffle, forming a closed structure for the electrical port of the optical module to prevent the electromagnetic waves of the optical module from overflowing through the electrical port. The projection of the first shielding baffle covers the second electrical port baffle.

[0126] In this example, on the side adjacent to the optical port, the lower surface of the circuit board is located above the first supporting portion and the second supporting portion of the lower shell, the upper surface of the circuit board 300 is connected to the optical transceiver component, and the optical transceiver component is in contact with the abutment portion 20114 of the cover plate to achieve positioning of the circuit board. On the side adjacent to the electrical port, the circuit board is located above the third supporting portion and the fourth supporting portion, and the upper portion of the circuit board is connected to the first shielding baffle, the second shielding baffle, and the third shielding baffle on the cover plate, and the circuit board is limited by the third limiting hole and the second limiting protrusion, and the fourth limiting hole and the third limiting protrusion.

[0127] The optical port position of the optical module, the first side wall of the upper shell is provided with a limit groove 20115, the positioning rod 203 extends into the limit groove 20115 through the first limit through hole 20222 and then enters the second limit through hole 20232, and the positioning rod 203 connects the upper shell 201 with the lower shell 202. The positioning rod defines the connection relationship between the cover plate and the lower shell. The lower shell is also provided with a limit baffle 2028, and the upper surface of the limit baffle 2028 protrudes from the upper surface of the optical port baffle 2024. The first side wall of the upper shell is against one side of the metal clamp 800, and the lower surface of the upper shell is connected to the optical transceiver component, so that the metal clamp 800 is in contact with the optical port baffle 2024.

[0128] The elastic component 700 blocks the first limiting through hole 20222 and the second limiting through hole 20232 to prevent the positioning rod 203 from escaping from the first limiting through hole 20222 or the second limiting through hole 20232 , thereby limiting the positioning rod 203 .

[0129] The circuit board is located on one side of the line connecting the limit baffle 2028 and the first shielding baffle 2016 and is provided with a variety of optoelectronic devices, and the circuit board is located on the other side of the line connecting the limit baffle 2028 and the first shielding baffle 2016 and is not provided with any electrical devices. The optoelectronic devices are located in the enclosed space formed by the upper shell and the lower shell covering each other, and the limit baffle 2028 and the first shielding baffle 2016 seal the space in the direction of the electrical port to prevent leakage of electromagnetic waves.

[0130] To facilitate the connection between the gold finger and the host computer, the area where the gold finger is located is located outside the closed space formed by the upper shell and the lower shell. In order to protect the gold finger, a protective plate 2029 is provided at the tail of the lower shell, and the protective plate 2029 is located between the first lower side plate 2022 and the second lower side plate 2023, and the protective plate 2029 is located above the circuit board.

[0131] Fig.17 FIG. 1 is a schematic diagram of a partial cross-section of an optical module provided according to some embodiments of the present application. Fig.17 As shown, a protective step surface 2015 is provided at one end of the cover plate 2011, and the upper surface of the protective step surface 2015 is lower than the upper surface of the cover plate. The upper surface of the protective step surface 2015 is connected to the lower surface of the protective plate 2029. The protective plate 2029 is in contact with the protective step surface 2015, and the side wall of the protective plate 2029 is against the side wall of the cover plate. The protective plate 2029 and the positioning rod 203 define the position of the cover plate in the length direction, so as to realize the connection between the upper shell and the lower shell.

[0132] The protective plate 2029 includes a first baffle 20294 and a second baffle 20292, wherein the first baffle is located above the protective step surface 2015, and the first baffle defines the position of the tail of the upper shell in the upper and lower structures. The second baffle 20292 is perpendicular to the first baffle, and the second baffle is located outside the protective step surface 2015. The protective step surface 2015 abuts against the side wall of the second baffle, so that the second baffle forms a position for the upper shell in the length direction.

[0133] The second side wall of the cover plate 2011 is in contact with and connected to the first lower side plate of the lower shell, and the third side wall of the cover plate 2011 is in contact with and connected to the second lower side plate of the lower shell. To prevent electromagnetic waves from overflowing from the gap between the second side wall of the cover plate 2011 and the lower shell, the second side wall of the cover plate 2011 is provided with a first shielding recessed area 20111, and the first shielding component is filled in the first shielding recessed area 20111. The projection of the first shielding recessed area 20111 on the circuit board runs through the length direction of the first circuit area. To prevent electromagnetic waves from overflowing from the gap between the third side wall of the cover plate 2011 and the lower shell, the third side wall of the cover plate 2011 is provided with a second shielding recessed area 20112, and the second shielding component is filled in the second shielding recessed area 20112. The projection of the second shielding recessed area 20112 on the circuit board runs through the length direction of the first circuit area.

[0134] The unlocking component includes: a rotating member, a sliding member, a pull ring and a rotating shaft, and the unlocking component is connected to the lower shell. In this example, the rotating member, the sliding member and the rotating shaft of the unlocking component are located on the bottom plate, and the unlocking component does not contact the upper shell.

[0135] In some embodiments, the upper housing is a plate-like structure and does not include an upper side plate perpendicular to the cover plate. The cover plate 2011 is integrally embedded between the first lower side plate 2022 and the second lower side plate 2023 of the lower housing, and the upper surface of the cover plate 2011 is flush with the upper surface of the first lower side plate 2022, and the upper surface of the cover plate 2011 is flush with the upper surface of the first lower side plate.

[0136] In some embodiments of the present application, the upper shell and the lower shell are connected by a positioning rod, and there is no need for screws to pass through the upper shell and the lower shell, which has a simple structure and is easy to install. At the same time, the optical port baffle divides the shell into a first cavity and a second cavity, and the adapter through hole connects the first cavity and the second cavity to achieve the positioning installation of the optical fiber adapter, shield the optical port position, and improve the electromagnetic shielding effect of the optical module. The circuit board is fixedly connected to the upper shell and the lower shell by pressing, which reduces the space occupied by screws and is conducive to miniaturization of the optical module.

[0137] Since the above embodiments are all described by citing and combining with other embodiments, different embodiments have the same parts, and the same and similar parts between the embodiments in this specification can be referred to each other. No further detailed description is given here.

[0138] Unless the context requires otherwise, throughout the specification and claims, the term "comprising" is to be interpreted as having an open, inclusive meaning, that is, "including, but not limited to"; the terms "first" and "second" are not to be understood as indicating or implying relative importance or indicating an upper limit on quantity; the term "plurality" means two or more; the term "connected" is to be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, or an integral connection, and can be directly connected or indirectly connected through an intermediate medium; the use of the terms "suitable for" or "configured to" implies open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps; descriptions such as "parallel", "perpendicular", "same", "consistent", and "flush" are not limited to absolute mathematical theoretical relationships, but also include an acceptable error range generated in practice, and also include differences based on the same design concept but due to manufacturing reasons.

[0139] The above-described embodiments of the present application do not constitute a limitation on the protection scope of the present application.

Claims

1. An optical module, characterized in that: include: Upper shell; A lower shell body, which is connected to the upper shell body to form a shell body; A circuit board is located between the upper shell and the lower shell; An optical fiber adapter is located on one side of the circuit board, and the optical fiber adapter is provided with an adapting protrusion; Wherein, the lower shell comprises: Base plate; A first lower side plate, located at one side of the bottom plate; A second lower side plate connected to the bottom plate, wherein the second lower side plate and the first lower side plate are arranged on two sides of the bottom plate opposite to each other; an optical port baffle, located between the first lower side plate and the second lower side plate, the optical port baffle dividing the lower shell into a first cavity and a second cavity; the circuit board is located in the second cavity; The optical port baffle is provided with an adapting through hole, and the adapting through hole connects the first cavity and the second cavity; one end of the optical fiber adapter extends to the first cavity through the adapting through hole; one side of the adapting protrusion abuts against one side of the optical port baffle, and the adapting through hole wraps the outer wall of the optical fiber adapter. The first side wall of the upper shell is provided with a limiting groove, and the positioning rod passes through the first lower side plate, the limiting groove and the second lower side plate; The upper shell covers the upper part of the first cavity.

2. The optical module according to claim 1, characterized in that: The first lower side plate is provided with a first limiting through hole, the second lower side plate is provided with a second limiting through hole, and the positioning rod passes through the first limiting through hole, the limiting groove and the first limiting through hole in sequence.

3. The optical module according to claim 1, characterized in that: Also includes: An elastic component, sleeved on the outer side of the shell; A first recessed area is provided on the upper surface of the upper shell, and the spring piece of the elastic component is embedded in the first recessed area; the elastic component covers the positioning rod.

4. The optical module according to claim 3, characterized in that: It also includes a metal clamp, including: a first clamp plate and a second clamp plate that are bent relative to each other: The first card plate is located above the optical port baffle, the second card plate is located at one side of the optical port baffle, and the second card plate is located between the adapter protrusion and the first side wall of the upper shell; the elastic component is connected to the first card plate.

5. The optical module according to claim 1, characterized in that: The second side wall of the upper shell is provided with a first shielding recessed area, a first shielding component is provided between the first shielding recessed area and the first lower side plate, and the first shielding component is interference-connected with the first shielding recessed area; A second shielding recessed area is provided between the third side wall of the upper shell and the second lower side plate, a second shielding component is provided in the second shielding recessed area, and the second shielding component is interference connected with the second shielding recessed area.

6. The optical module according to claim 5, characterized in that: The circuit board is provided with a third limiting hole, a fourth limiting hole, a first corner and a second corner; The upper housing comprises: A first shielding baffle is located on the lower surface of the upper shell, and the first shielding baffle runs through the width direction of the upper shell; A second shielding baffle, connected to the first shielding baffle, the second shielding baffle being adjacent to the first lower side plate; A third shielding baffle, connected to the first shielding baffle, the third shielding baffle being adjacent to the second lower side plate; A first circuit baffle and a second limiting protrusion are provided at the bottom of the second shielding baffle; one side of the first circuit baffle abuts against the first corner, and one end of the second limiting protrusion is embedded in the third limiting hole; A second circuit baffle and a third limiting protrusion are provided at the bottom of the third shielding baffle; one side of the second circuit baffle abuts against the second corner, and one end of the third limiting protrusion is embedded in the fourth limiting hole.

7. The optical module according to claim 6, characterized in that: The bottom plate is provided with a second electrical port baffle, The lower surface of the circuit board is connected to the second electrical port baffle, and the upper surface of the circuit board is connected to the first shielding baffle; The projection of the first shielding baffle covers the second electrical port baffle.

8. An optical module, characterized in that: include: Cover plate; A lower shell body, connected with the cover plate to form a shell body; A circuit board, located between the cover plate and the lower shell; An optical fiber adapter is located on one side of the circuit board, and the optical fiber adapter is provided with an adapting protrusion; The metal clamp comprises: a first clamp plate and a second clamp plate which are bent relative to each other, Wherein, the lower shell comprises: Base plate; A first lower side plate, located at one side of the bottom plate; A second lower side plate connected to the bottom plate, wherein the second lower side plate and the first lower side plate are arranged on two sides of the bottom plate opposite to each other; an optical port baffle, located between the first lower side plate and the second lower side plate, the optical port baffle dividing the lower shell into a first cavity and a second cavity; the circuit board is located in the second cavity; The optical port baffle is provided with an adapting through hole, and the adapting through hole communicates the first cavity and the second cavity; one end of the optical fiber adapter extends to the first cavity through the adapting through hole; one side of the adapting protrusion abuts against one side of the optical port baffle, The first side wall of the cover plate is provided with a limiting groove, and the positioning rod passes through the first lower side plate, the limiting groove and the second lower side plate; The cover plate covers the upper part of the first cavity; The first clamping plate is located above the optical port baffle, and the cover plate abuts against one side of the second clamping plate.

9. The optical module according to claim 8, characterized in that: The first lower side plate is provided with a first limiting through hole, the second lower side plate is provided with a second limiting through hole, and the positioning rod passes through the first limiting through hole, the limiting groove and the first limiting through hole.

10. The optical module according to claim 8, characterized in that: The second side wall of the cover plate is provided with a first shielding recessed area, a first shielding component is provided between the first shielding recessed area and the first lower side plate, and the first shielding component is interference-connected with the first shielding recessed area; A second shielding recessed area is provided between the third side wall of the cover plate and the second lower side plate, a second shielding component is provided in the second shielding recessed area, and the second shielding component is interference connected with the second shielding recessed area.

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