CN114035284B

CN114035284B - Optical module

Info

Publication number: CN114035284B
Application number: CN202111388904.2A
Authority: CN
Inventors: 叶书华; 胥嫏; 司宝峰; 杨行勇
Original assignee: Hisense Broadband Multimedia Technology Co Ltd
Current assignee: Hisense Broadband Multimedia Technology Co Ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2023-01-20
Anticipated expiration: 2041-11-22
Also published as: CN114035284A

Abstract

The application discloses an optical module, which comprises a shell. The shell is internally provided with a circuit board, a light emitting component, a light receiving component and an optical fiber limiting component. The light emitting component and the light receiving component are both connected with the circuit board, and the optical fiber limiting component is arranged in the shell. The light receiving assembly is laid on the bottom surface of the lower shell. The light emitting component and the light receiving component are stacked. The optical fiber limiting assembly comprises a connecting piece and a fixing piece. And the connecting piece is connected with the fixing piece, fixed on the upper surface of the light receiving assembly and provided with a fixing groove. The fixing groove is used for clamping the optical fiber adapter on the upper surface of the light receiving assembly so that the light emitting assembly is fixed on the upper surface of the light receiving assembly. The fixing member is used for fixing the light receiving assembly on the bottom surface of the lower shell. This application is fixed in light emission subassembly through fixed slot and mounting on the surface of light receiving assembly, and light receiving assembly is fixed in the bottom surface of casing down, avoids light emission subassembly and light receiving assembly to break away from the casing, reduces the optical module and damages.

Description

Optical module

Technical Field

The application relates to the technical field of optical communication, in particular to an optical module.

Background

The 200G QSFP-DD optical module is a high-performance optical module used for short-distance multi-lane data communication and interconnection application.

The optical module comprises an upper shell and a lower shell which is surrounded by the upper shell, wherein an optical transceiver and four optical fiber connectors are arranged in the shell, the optical transceiver comprises two optical transmitting assemblies and two optical receiving assemblies, and the two optical transmitting assemblies and the two optical receiving assemblies are respectively connected with the corresponding optical fiber connectors through optical fibers.

Because the space in the optical module is limited, the two light emitting assemblies and the two light receiving assemblies are easy to be separated from the shell when the optical module is arranged, and the optical module is damaged.

Disclosure of Invention

The application provides an optical module to fixed light emission subassembly and light receiving assembly when having realized the optical module overall arrangement, reduce the optical module and damage.

A light module, comprising:

the lower shell and the upper shell form a shell with a light port;

a circuit board disposed in the housing;

the light receiving assembly is laid on the bottom surface of the lower shell, is electrically connected with the circuit board and is used for receiving a light signal;

the optical transmitting component is stacked with the optical receiving component, is electrically connected with the circuit board and comprises an optical fiber adapter for transmitting optical signals;

the optical fiber limiting component is arranged in the shell, comprises a connecting piece and a fixing piece, and is used for fixing the light emitting component on the upper surface of the light receiving component and fixing the light receiving component on the bottom surface of the lower shell;

the connecting piece is connected with the fixing piece, fixed on the upper surface of the light receiving assembly and provided with a fixing groove;

the fixing groove is used for clamping the optical fiber adapter on the upper surface of the light receiving component so that the light emitting component is fixed on the upper surface of the light receiving component;

and the fixing piece is fixed on the bottom surface of the lower shell and used for fixing the light receiving assembly on the bottom surface of the lower shell.

Has the beneficial effects that: the application provides an optical module, which comprises a lower shell and an upper shell, wherein the upper shell and the lower shell form a shell with an optical port. The shell is internally provided with a circuit board, a light emitting component, a light receiving component and an optical fiber limiting component. Wherein, light emission subassembly and light receiving assembly all are connected with the circuit board electricity, and the spacing subassembly of optic fibre sets up in the casing. And the light receiving component is laid on the bottom surface of the lower shell and used for receiving the light signal. The optical transmitting assembly is stacked with the optical receiving assembly and comprises a fiber adapter for transmitting optical signals. The optical fiber limiting assembly comprises a connecting piece and a fixing piece and is used for fixing the light emitting assembly on the upper surface of the light receiving assembly and fixing the light receiving assembly on the bottom surface of the lower shell. And the connecting piece is connected with the fixing piece, fixed on the upper surface of the light receiving assembly and provided with a fixing groove. And the fixing groove is used for clamping the optical fiber adapter on the upper surface of the light receiving component so as to ensure that the light emitting component is fixed on the upper surface of the light receiving component. And the fixing piece is fixed on the bottom surface of the lower shell and used for fixing the light receiving assembly on the bottom surface of the lower shell. The fixed slot is fixed in light emission component's upper surface, and the mounting is fixed in the bottom surface of inferior valve with the spacing subassembly of optic fibre. Since the optical fiber limiting member fixes the light receiving assembly to the bottom surface of the lower housing, the fixing member also fixes the light receiving assembly to the bottom surface of the lower housing. This application is fixed in light emission component's upper surface through fixed slot and mounting, and light reception component is fixed in the bottom surface of casing down, avoids light emission component and light reception component to break away from the casing, reduces the optical module and damages.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of an electrical connection relationship of an optical communication terminal;

fig. 2 is a schematic structural diagram of an optical network terminal;

fig. 3 is a schematic structural diagram of an optical module according to an embodiment of the present application;

FIG. 4 is a schematic diagram of an exploded structure of an optical module according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of an optical transceiver, an optical fiber limiting assembly, a fiber winding assembly and a circuit board according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a fiber restraining assembly and a fiber winding assembly according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram illustrating a first angular structure of an optical transceiver and a fiber stop assembly according to an embodiment of the present disclosure;

fig. 8 is a schematic diagram of a second angular structure of the optical transceiver and the optical fiber limiting assembly according to the embodiment of the present disclosure;

FIG. 9 is a schematic view of a first angular configuration of a fiber stop assembly according to an embodiment of the present disclosure;

FIG. 10 is a second angular configuration of a fiber stop assembly according to an embodiment of the present disclosure;

FIG. 11 is a schematic third angle structure diagram of an optical fiber positioning assembly according to an embodiment of the present disclosure;

fig. 12 is a schematic structural diagram of a fiber-wound rack assembly and a circuit board according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural view of a fiber winding frame assembly according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of an optical fiber limiting assembly, an optical transceiver and a lower housing according to an embodiment of the present disclosure;

fig. 15 is a schematic structural diagram of a lower housing, a light receiving module and a light emitting module according to an embodiment of the present disclosure;

fig. 16 is a schematic structural diagram of a lower housing and a light receiving assembly provided in an embodiment of the present application;

fig. 17 is a schematic structural view of a lower housing and an optical fiber positioning assembly according to an embodiment of the present disclosure;

fig. 18 is a schematic structural diagram of a lower housing according to an embodiment of the present application;

FIG. 19 is a schematic diagram of an optical fiber and light receiving assembly according to an embodiment of the present disclosure;

fig. 20 is a schematic structural diagram of a light receiving module according to an embodiment of the present disclosure;

fig. 21 is a cross-sectional view of an optical module according to an embodiment of the present application.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In the optical communication technology, light is used to carry information to be transmitted, and an optical signal carrying the information is transmitted to information processing equipment such as a computer through information transmission equipment such as an optical fiber or an optical waveguide, so that the transmission of the information is completed. Because the optical signal has the passive transmission characteristic when being transmitted through the optical fiber or the optical waveguide, the information transmission with low cost and low loss can be realized. Further, since a signal transmitted by an information transmission device such as an optical fiber or an optical waveguide is an optical signal and a signal that can be recognized and processed by an information processing device such as a computer is an electrical signal, it is necessary to perform interconversion between the electrical signal and the optical signal in order to establish an information connection between the information transmission device such as an optical fiber or an optical waveguide and the information processing device such as a computer.

The optical module realizes the function of interconversion between the optical signal and the electrical signal in the technical field of optical fiber communication. The optical module comprises an optical port and an electrical port, the optical module realizes optical communication with information transmission equipment such as optical fibers or optical waveguides and the like through the optical port, realizes electrical connection with an optical network terminal (such as an optical modem) through the electrical port, and the electrical connection is mainly used for realizing power supply, I2C signal transmission, data signal transmission, grounding and the like; the optical network terminal transmits the electric signal to the computer and other information processing equipment through a network cable or a wireless fidelity (Wi-Fi).

Fig. 1 is a diagram of optical communication system connections according to some embodiments. As shown in fig. 1, the optical communication system mainly includes a remote server 1000, a local information processing device 2000, an optical network terminal 100, an optical module 200, an optical fiber 101, and a network cable 103;

one end of the optical fiber 101 is connected to the remote server 1000, and the other end is connected to the optical network terminal 100 through the optical module 200. The optical fiber itself can support long-distance signal transmission, for example, signal transmission of thousands of meters (6 kilometers to 8 kilometers), on which basis if a repeater is used, ultra-long-distance transmission can be theoretically achieved. Therefore, in a typical optical communication system, the distance between the remote server 1000 and the optical network terminal 100 may be several kilometers, tens of kilometers, or hundreds of kilometers.

One end of the network cable 103 is connected to the local information processing device 2000, and the other end is connected to the optical network terminal 100. The local information processing apparatus 2000 may be any one or several of the following apparatuses: router, switch, computer, cell-phone, panel computer, TV set etc..

The physical distance between the remote server 1000 and the optical network terminal 100 is greater than the physical distance between the local information processing apparatus 2000 and the optical network terminal 100. The connection between the local information processing device 2000 and the remote server 1000 is completed by the optical fiber 101 and the network cable 103; and the connection between the optical fiber 101 and the network cable 103 is completed by the optical module 200 and the optical network terminal 100.

The optical module 200 includes an optical port and an electrical port. The optical port is configured to connect with the optical fiber 101, so that the optical module 200 establishes a bidirectional optical signal connection with the optical fiber 101; the electrical port is configured to be accessed into the optical network terminal 100, so that the optical module 200 establishes a bidirectional electrical signal connection with the optical network terminal 100. The optical module 200 converts an optical signal and an electrical signal to each other, so that a connection is established between the optical fiber 101 and the optical network terminal 100. For example, an optical signal from the optical fiber 101 is converted into an electrical signal by the optical module 200 and then input to the optical network terminal 100, and an electrical signal from the optical network terminal 100 is converted into an optical signal by the optical module 200 and input to the optical fiber 101.

The optical network terminal 100 includes a housing (housing) having a substantially rectangular parallelepiped shape, and an optical module interface 102 and a network cable interface 104 provided on the housing. The optical module interface 102 is configured to access the optical module 200, so that the optical network terminal 100 establishes a bidirectional electrical signal connection with the optical module 200; the network cable interface 104 is configured to access the network cable 103, such that the optical network terminal 100 establishes a bidirectional electrical signal connection with the network cable 103. The optical module 200 is connected to the network cable 103 via the optical network terminal 100. For example, the optical network terminal 100 transmits an electrical signal from the optical module 200 to the network cable 103, and transmits a signal from the network cable 103 to the optical module 200, so that the optical network terminal 100 can monitor the operation of the optical module 200 as an upper computer of the optical module 200. The upper computer of the Optical module 200 may include an Optical Line Terminal (OLT) in addition to the Optical network Terminal 100.

The remote server 1000 establishes a bidirectional signal transmission channel with the local information processing device 2000 through the optical fiber 101, the optical module 200, the optical network terminal 100, and the network cable 103.

Fig. 2 is a structure diagram of an optical network terminal according to some embodiments, and fig. 2 only shows a structure of the optical module 200 of the optical network terminal 100 in order to clearly show a connection relationship between the optical module 200 and the optical network terminal 100. As shown in fig. 2, the optical network terminal 100 further includes a PCB circuit board 105 disposed in the housing, a cage 106 disposed on a surface of the PCB circuit board 105, and an electrical connector disposed inside the cage 106. The electrical connector is configured to access an electrical port of the optical module 200; the heat sink 107 has a projection such as a fin that increases a heat radiation area.

The optical module 200 is inserted into a cage 106 of the optical network terminal 100, the cage 106 holds the optical module 200, and heat generated by the optical module 200 is conducted to the cage 106 and then diffused by a heat sink 107. After the optical module 200 is inserted into the cage 106, an electrical port of the optical module 200 is connected to an electrical connector inside the cage 106, and thus the optical module 200 establishes a bidirectional electrical signal connection with the optical network terminal 100. Further, the optical port of the optical module 200 is connected to the optical fiber 101, and the optical module 200 establishes bidirectional electrical signal connection with the optical fiber 100.

Fig. 3 is a diagram of an optical module provided according to some embodiments, and fig. 4 is an exploded structural view of an optical module according to some embodiments. As shown in fig. 3 and 4, the optical module 200 includes a housing, a circuit board 300 disposed in the housing, and an optical transceiver;

the shell comprises an upper shell 201 and a lower shell 202, wherein the upper shell 201 is covered on the lower shell 202 to form the shell with two

openings

204 and 205; the outer contour of the housing generally appears square.

In some embodiments, the lower housing 202 includes a bottom plate and two lower side plates disposed at both sides of the bottom plate and perpendicular to the bottom plate; the upper housing 201 includes a cover plate, and two upper side plates disposed on two sides of the cover plate and perpendicular to the cover plate, and is combined with the two side plates by two side walls, so that the upper housing 201 covers the lower housing 202.

The direction of the connecting line of the two

openings

204 and 205 may be the same as the length direction of the optical module 200, or may not be the same as the length direction of the optical module 200. For example, the opening 204 is located at an end (left end in fig. 3) of the optical module 200, and the opening 205 is also located at an end (right end in fig. 3) of the optical module 200. Alternatively, the opening 204 is located at an end of the optical module 200, and the opening 205 is located at a side of the optical module 200. Wherein, the opening 204 is an electrical port, and the gold finger of the circuit board 300 extends out of the electrical port 204 and is inserted into an upper computer (such as the optical network terminal 100); the opening 205 is an optical port configured to receive the external optical fiber 101, so that the optical fiber 101 is connected to an optical transceiver inside the optical module 200.

Wherein, the optical port is a CS optical port. The CS optical port comprises two transmitting interfaces and two receiving interfaces. The double-core size of the CS optical port is only 8mm, and compared with 13mm of the LC optical port double-core connector, the size of the CS optical port double-core connector is reduced by 36%, and the wiring density is improved.

The upper shell 201 and the lower shell 202 are combined in an assembly mode, so that devices such as the circuit board 300 and the optical transceiver can be conveniently installed in the shells, and the upper shell 201 and the lower shell 202 can form packaging protection for the devices. In addition, when the devices such as the circuit board 300 are assembled, the positioning components, the heat dissipation components and the electromagnetic shielding components of the devices are convenient to arrange, and the automatic implementation production is facilitated.

In some embodiments, the upper housing 201 and the lower housing 202 are generally made of metal materials, which is beneficial to achieve electromagnetic shielding and heat dissipation.

In some embodiments, the optical module 200 further includes an unlocking component 203 located on an outer wall of the housing of the optical module, and the unlocking component 203 is configured to implement a fixed connection between the optical module 200 and an upper computer or release the fixed connection between the optical module 200 and the upper computer.

Illustratively, the unlocking member 203 is located on the outer wall of the two lower side plates 2022 of the lower housing 202, and includes a snap-fit member that mates with a cage of an upper computer (e.g., the cage 106 of the optical network terminal 100). When the optical module 200 is inserted into the cage of the upper computer, the optical module 200 is fixed in the cage of the upper computer by the engaging member of the unlocking member 203; when the unlocking member 203 is pulled, the engaging member of the unlocking member 203 moves along with it, and the connection relationship between the engaging member and the upper computer is changed to release the engagement relationship between the optical module 200 and the upper computer, so that the optical module 200 can be drawn out from the cage of the upper computer.

The circuit board 300 includes circuit traces, electronic components (such as capacitors, resistors, triodes, and MOS transistors), and chips (such as MCU, laser driver chip, amplitude limiting amplifier chip, clock data recovery CDR, power management chip, and data processing chip DSP).

The circuit board 300 connects the above devices in the optical module 200 together according to circuit design through circuit routing to implement functions of power supply, electrical signal transmission, grounding, and the like.

The circuit board 300 is generally a rigid circuit board, which can also realize a bearing effect due to its relatively hard material, for example, the rigid circuit board can stably bear a chip; the hard circuit board can also be inserted into an electric connector in the upper computer cage, and in some embodiments disclosed in the application, a metal pin/golden finger is formed on the surface of the tail end on one side of the hard circuit board and is used for being connected with the electric connector; these are not easily implemented with flexible circuit boards.

Flexible circuit boards are also used in some optical modules; the flexible circuit board is generally used in combination with the rigid circuit board, and for example, the rigid circuit board may be connected to the optical transceiver device to supplement the rigid circuit board.

The optical transceiver includes two optical transmitter modules 400 and two optical receiver modules 500.

And a light emitting assembly 400 electrically connected to the circuit board 300. Specifically, the light emitting assembly 400 may be disposed on a surface of the circuit board 300, or may be electrically connected to the circuit board 300 through a flexible board.

The light receiving module 500 is electrically connected to the circuit board 300. Specifically, the light receiving module 500 may be disposed on a surface of the circuit board 300, or may be electrically connected to the circuit board 300 through a flexible board.

Although both the light emitting module 400 and the light receiving module 500 may be disposed on the surface of the circuit board 300, and may also be electrically connected to the circuit board 300 through a flexible board, in the embodiment of the present application, both the light emitting module 400 and the light receiving module 500 are electrically connected to the circuit board 300 through a flexible board.

The optical transmission assembly 400 is used for transmitting optical signals. Specifically, the optical transmission module 400 is provided with an optical transmission chip and an optical fiber adapter. The light emitting chip emits light signals under the action of the driving signals.

And an optical receiving module 500 for receiving the optical signal transmitted by the second optical fiber. Specifically, a light receiving chip and an optical fiber adapter are disposed in the light receiving module 500, and the light receiving chip receives the optical signal transmitted by the second optical fiber and converts the optical signal into an electrical signal.

An optical fiber connector 600 for realizing optical connection between inside and outside of the optical module. Specifically, one end of the optical fiber connector 600 is connected to an optical fiber inside the optical module, and the other end of the optical fiber connector 600 is connected to an optical fiber outside the optical module, thereby achieving optical connection between inside and outside the optical module.

One end of the optical fiber connector 600 is connected to an optical fiber inside the optical module. Specifically, the optical fiber adapters of the two light emitting assemblies 400 are connected with the corresponding optical fiber connectors 600 through first optical fibers, and the optical fiber adapters of the two light receiving assemblies 500 are connected with the corresponding optical fiber connectors 600 through second optical fibers, so that one end of the optical fiber connector 600 is connected with the optical fibers inside the optical module.

The optical fiber connector 600 realizes optical connection between inside and outside of the optical module, so that an optical signal transmitted by the optical transmitting assembly is transmitted to the outside of the optical module through the optical fiber connector 600, or an optical receiving assembly receives an optical signal transmitted from the outside of the optical module to the inside of the optical module through the optical fiber connector 600.

The first optical fiber and the second optical fiber are both long optical fibers in the optical module. However, when the long optical fiber is directly connected, the curvature radius of the long optical fiber is too small, and the optical fiber is easily damaged due to too large optical fiber loss. Therefore, the optical fiber in the optical module is wound from the optical port direction to the electrical port direction, and then wound back from the electrical port direction to the optical port direction, and then connected with the optical fiber connector corresponding to the optical transmitting component or the optical receiving component. Due to the limited space in the optical module, a plurality of optical fibers are easily wound and then enter the contact area between the upper shell and the lower shell to cause damage to the optical fibers when the optical module is arranged. Wherein the long optical fiber is an optical fiber with a long length. In the embodiment of the present application, a fiber stop assembly 700 and a fiber winding assembly 800 are provided.

The optical fiber positioning module 700 is disposed in the housing 202, and is not only used to position the optical fiber at the optical port, but also used to fix the light emitting module 400 on the upper surface of the light receiving module 500, and fix the light receiving module 500 on the bottom surface of the lower housing 202.

The fiber winding frame assembly 800 is disposed on the circuit board 300 and used for fixing the optical fiber on the circuit board side.

Fig. 5 is a schematic structural diagram of an optical transceiver, an optical fiber limiting assembly, a fiber winding assembly, and a circuit board according to an embodiment of the present disclosure. As shown in fig. 5, the light receiving module 500 is stacked with the light emitting module 400. In particular, the method comprises the following steps of,

since high-frequency signal lines are to be routed on the upper surface of the circuit board 300, the light emitting module 400 is connected to the upper surface of the circuit board 300 through a flexible board, and the light receiving module 500 is connected to the lower surface of the circuit board 300 through a flexible board. The light emitting modules 400 are connected to the upper surface of the circuit board 300 through a flexible board, that is, two light emitting modules 400 are arranged side by side on the first plane. The light receiving modules 500 are connected to the lower surface of the circuit board 300 through a flexible board, that is, two light receiving modules 500 are arranged in parallel on the second plane. And since the first plane and the second plane are different planes, the light receiving module 500 and the light emitting module 400 are stacked.

Since the light receiving module 500 is laid on the bottom surface of the lower case 202, the light emitting module 400 stacked with the light receiving module 500 is fixed to the upper surface of the light receiving module 500.

Fig. 6 is a schematic structural diagram of an optical fiber limiting assembly, a fiber winding frame assembly and an optical fiber according to an embodiment of the present disclosure. Fig. 7 is a schematic view of a first angle structure of an optical transceiver and a fiber limit assembly according to an embodiment of the present disclosure. Fig. 8 is a schematic diagram of a second angle structure of the optical transceiver and the optical fiber limiting assembly according to the embodiment of the present application. Fig. 9 is a schematic view of a first angular structure of an optical fiber positioning limiting assembly according to an embodiment of the present application. Fig. 10 is a schematic diagram of a second angle structure of the optical fiber limiting assembly according to the embodiment of the present application. Fig. 11 is a third angle structure diagram of an optical fiber limiting assembly according to an embodiment of the present application. As shown in fig. 6-11, the fiber stop assembly 700 includes a connector 701, a fixture 702, and a fiber stop 703. In particular, the method comprises the following steps of,

the middle end of the connecting member 701 is connected to the fixing member 702, and the two ends of the connecting member are connected to the two optical fiber stoppers 703 respectively, so as to connect the fixing member 702 and the optical fiber stoppers 703. The two fiber stoppers 703 have the same structure and are symmetrically disposed.

The connection between the connector 701 and the fiber stopper 703 and the fixing member 702 is by adhesion. In the present application, the connecting element 701, the optical fiber stopper 703 and the fixing element 702 may be connected into a whole by adhesion, or the connecting element 701, the optical fiber stopper 703 and the fixing element 702 may be designed as an integrally formed structure.

The connection means among the respective components inside the connector 701, the fiber stopper 703, and the fixture 702 is adhesion. In the present application, the respective components of the connector 701 may be connected to each other by bonding, or the connector 701 may be designed to have an integrally formed structure. Similarly, the fixing member 702 may be formed by bonding the components into a whole, or by designing the fixing member 702 as an integral structure. The optical fiber stopper 703 may be formed by bonding the respective components together, or by designing the optical fiber stopper 703 as an integral structure.

One surface of the connector 701 adjacent to the light receiving module 500 is connected to the upper surface of the light receiving module 500, one surface of the connector 701 adjacent to the light emitting module 400 is connected to the first end of the light emitting module 400, and one surface of the connector 701 adjacent to the fixing member 702 is connected to the fixing member 702. Wherein the first end of the light emitting assembly 400 is the end of the light emitting assembly 400 having the fiber optic adapter. The second end of the light emitting assembly 400 is the end of the light emitting assembly 400 that is connected to the circuit board.

One surface of the connector 701 connected to the light receiving module 500 is parallel to the upper surface of the light receiving module 500, and the contact area between the connector 701 and the light receiving module 500 is increased.

The side of the connector 701 connected to the light emitting module 400 is parallel to the first end of the light emitting module 400, increasing the contact area between the connector 701 and the light emitting module 400.

The connection member 701 includes a first connection portion 7011, a second connection portion 7012, and a third connection portion 7013. In particular, the method comprises the following steps of,

the first connecting portion 7011 has two ends connected to the second connecting portion 7012 and the third connecting portion 7013, respectively, and a middle connected to the fixing member 702. Specifically, the first connection portion 7011 includes a first connection face 70111, a second connection face 70112, and a third connection face 70113. The first connection surface 70111 is connected to the upper surface of the light receiving element 500 (i.e., the first connection surface 70111 is fixed to the upper surface of the light receiving element 500), the second connection surface 70112 is connected to the first end of the light emitting element 400, two ends of the third connection surface 70113 are respectively connected to the second connection portion 7012 and the third connection portion 7013, and a middle of the third connection surface 70113 is connected to the fixing element 702. Wherein, the second connection face 70112, the first connection face 70111 and the third connection face 70113 are connected in sequence.

The first connection surface 70111 is parallel to the upper surface of the light receiving element 500, increasing the contact area between the first connection portion 7011 and the light emitting element 400.

The second connection surface 70112 is parallel to the first end of the light emitting assembly 400, increasing the contact area of the second connection surface 70112 with the light emitting assembly 400.

A fixing groove 70114 is disposed between two ends of the first connection surface 70111. Specifically, the first connecting surface 70111 is recessed along the upper housing 201 to form a fixing groove 70114.

The fixing groove 70114 is used to clamp the fiber adapter to the upper surface of the light receiving module 500, so that the light emitting module 400 is fixed to the upper surface of the light receiving module 500. Specifically, the fixing groove 70114 and the upper surface of the light receiving element 500 enclose a fixing cavity 70115. The optical fiber adapter of the light emitting module 400 is clamped in the fixing cavity 70115, that is, the optical fiber adapter is clamped on the upper surface of the light receiving module 500. Since the fiber optic adapter of the light emitting module 400 is fixed to the upper surface of the light receiving module 500, the light emitting module 400 is also fixed to the upper surface of the light receiving module 500.

The fixing groove 70114 may or may not be a smooth surface. When the fixing groove 70114 is a smooth surface, there are more contact points of the fixing groove 70114 with the optical fiber adapter than when the fixing groove 70114 is not a smooth surface, so that the optical fiber adapter is stably fixed to the upper surface of the light receiving module 500, that is, the light emitting module 400 is also stably fixed to the upper surface of the light receiving module 500.

The shape of the fixing groove 70114 may be any shape. When the shape of the fixing groove 70114 and the shape of the fiber optic adapter are converted from mismatch to match, contact points of the fixing groove 70114 with the fiber optic adapter are increased, so that the fiber optic adapter is more stably fixed to the upper surface of the light receiving module 500. For example, the fiber optic adapter has a circular cross-section and the retaining slot 70114 has a U-shape.

In the present application including two light emitting assemblies 400, the number of the fixing grooves 70114 may be set to 1 or 2. When the number of the fixing slots 70114 is 1, two fiber optic adapters are fixed in the fixing slots 70114, but there are fewer contact points between the two fiber optic adapters and the fixing slots 70114, the two fiber optic adapters easily collide, and the fiber optic adapters easily slip from the fixing slots 70114. When the number of the fixing grooves 70114 is 2, two optical fiber adapters are respectively fixed in one fixing groove 70114, and there are more contact points between the two optical fiber adapters and the fixing groove 70114, and the two optical fiber adapters do not contact and are not easy to collide, so that the optical fiber adapters are not easy to slip from the fixing groove 70114, and the optical fiber adapters are more stably fixed on the upper surface of the light receiving assembly 500.

Fig. 14 is a schematic structural diagram of an optical fiber limiting assembly, an optical transceiver, and a lower housing according to an embodiment of the present disclosure. Fig. 15 is a schematic structural diagram of a lower housing, a light receiving assembly, and a light emitting assembly provided in an embodiment of the present application. Fig. 16 is a schematic structural diagram of a lower housing and a light receiving assembly according to an embodiment of the present application. Fig. 17 is a schematic structural diagram of a lower housing and an optical fiber limiting assembly according to an embodiment of the present application. Fig. 18 is a schematic structural diagram of a lower housing according to an embodiment of the present application. As shown in fig. 14 to 18, in the embodiment of the present application, the bottom surface of the lower housing 202 is provided with a second fixing portion 2021, two first snapping pieces 2022, two second snapping pieces 2023 and a third snapping piece 2024. In particular, the method comprises the following steps of,

the two first clamping pieces 2022 are located at the first end of the lower housing 202, and the two structures are the same. The two second clamping pieces 2023 are located at the second end of the lower housing 202, and the two structures are the same. The first end of the lower housing 202 is the end of the lower housing 202 near the optical port, and the second end of the lower housing 202 is the end of the lower housing 202 near the electrical port.

The first clamping member 2022 includes a first clamping surface, a second clamping surface 20221, a third clamping surface 20222, a fourth clamping surface 20223 and a fifth clamping surface.

The first engagement surface is connected to the bottom surface of the lower housing 202. The first clamping surface, the second clamping surface 20221, the third clamping surface 20222, the fourth clamping surface 20223 and the fifth clamping surface are connected in sequence, and the third clamping surface 20222 is an inclined surface.

The fifth clamping surface is adjacent to the first end of the light receiving element 500 and is used for limiting the position of the light receiving element 500. Specifically, since the fifth clamping surface of the first clamping member 2022 is located at the first end of the lower housing 202, the light receiving assembly 500 is limited to slide toward the light opening. The first end of the light receiving module 500 is an end of the light receiving module 500 having a fiber adapter.

The first clamping member 2022 further includes a sixth clamping surface and a seventh clamping surface. The sixth clamping surface and the seventh clamping surface are disposed opposite to each other and are connected to the first clamping surface, the second clamping surface 20221, the third clamping surface 20222, the fourth clamping surface 20223, and the fifth clamping surface, respectively. Wherein the sixth engaging surface is connected to the side surface of the lower housing 202.

The second engaging member 2023 and the first engaging member 2022 define the position of the light receiving assembly 500. Specifically, the second clip 2023 is located at the second end of the lower housing 202, the first clip 2022 is located at the first end of the lower housing 202, the first clip 2022 and the second clip 2023 enclose a defined cavity, and the light receiving assembly 500 is located in the defined cavity. Wherein, one side of the second clamping piece 2023 is connected with the side of the lower housing 202.

The second snap-in connector 2023 and the second connection surface 70112 of the connector 701 define the position of the light emitting assembly 400. Specifically, the first end of the light emitting element 400 is connected to the second connection surface 70112 of the connection member 701, the second end of the light emitting element 400 is connected to the second engaging member 2023, and the height difference of the second engaging member 2023 is greater than the height difference of the light receiving element 500, so that the light emitting element 400 is limited on the upper surface of the light receiving element 500 by the second connection surface 70112 and the second engaging member 2023, thereby reducing the sliding of the light emitting element 400 on the upper surface of the light receiving element 500.

A third clamping member 2024 located at the middle position of the bottom surface of the lower housing 202 for defining the position of the light receiving assembly 500. Specifically, the second ends of the two light receiving assemblies 500 are partially connected to the third clamping member 2024, and the third clamping member 2024 is located at the second end of the lower housing 202 and is located on the same straight line with the two second clamping members 2023. The third clamping member 2024 and the second clamping member 2023 act together, so that the two light receiving elements 500 are both limited at one side of the second clamping member 2023 and the third clamping member 2024, and the sliding of the light receiving elements 500 is further reduced. The second end of the light receiving module 500 is an end of the light receiving module 500 connected to the circuit board.

The third snap 2024, together with the second connection face 70112 of the connector 701, defines the location of the light emitting assembly 400. Specifically, the first end of the light emitting element 400 is connected to the second connection surface 70112 of the connecting element 701, the second end of the light emitting element 400 is not only connected to the second engaging element 2023, but also connected to the third engaging element 2024, and the height difference of the third engaging element 2024 is greater than the height difference of the light receiving element 500, so that the light emitting element 400 is limited on the upper surface of the light receiving element 500 by the second connection surface 70112, the second engaging element 2023, and the third engaging element 2024, so as to reduce the sliding of the light emitting element 400 on the upper surface of the light receiving element 500.

The height difference of the second clamping piece 2023 and the height difference of the third clamping piece 2024 are both greater than the height difference of the light receiving assembly 500, and then the second clamping piece 2023 and the third clamping piece 2024 not only define the position of the light emitting assembly 400, but also define the position of the light receiving assembly 500, so that the sliding of the light receiving assembly 500 on the bottom surface of the lower housing 202 is reduced, the sliding of the light emitting assembly 400 on the upper surface of the light receiving assembly 500 is also reduced, and the stability between the light emitting assembly 400 and the light receiving assembly 500 is increased.

As shown in fig. 6-11, the second connection portion 7012 includes a fourth connection surface, a fifth connection surface 70121, a sixth connection surface 70122, and a seventh connection surface. In particular, the method comprises the following steps of,

the fourth connection surface, the fifth connection surface 70121, the sixth connection surface 70122, and the seventh connection surface are connected in sequence.

The fourth connection surface is connected to the fiber-limiting member 703, the fifth connection surface 70121 is connected to the third clamping surface 20222, one end of the sixth connection surface 70122 is connected to the fourth clamping surface 20223, the other end of the sixth connection surface 70122 is connected to the upper surface of the light receiving element 500, and the seventh connection surface is connected to two ends of the third connection surface 70113. Wherein the third engaging surface 20222 is an inclined surface.

The third clamping surface 20222 is parallel to the fifth connecting surface 70121, and the fourth clamping surface 20223 is parallel to the sixth connecting surface 70122, so as to increase the contact area between the first clamping member 2022 and the second connecting portion 7012, i.e., increase the contact area between the second connecting portion 7012 and the lower housing 202, thereby facilitating the fixing of the optical fiber limiting assembly 700 on the bottom surface of the lower housing 202.

The third connecting portion 7013 and the second connecting portion 7012 are symmetrically disposed, so that the structure of the third connecting portion 7013 is the same as that of the second connecting portion 7012, and the description thereof is omitted.

The fixture 702 is used to secure the fiber restraining assembly 700 to the bottom surface of the lower housing 202. Specifically, the fixing element 702 includes a first fixing portion 7021, and the first fixing portion 7021 and the second fixing portion 2021 are disposed correspondingly. The first fixing portion 7021 is engaged with the second fixing portion 2021 of the lower housing 202, and fixes the optical fiber limiting assembly 700 to the bottom surface of the lower housing 202.

The fixing member 702 has a first end provided with a first fixing portion 7021 and a second end connected to the connecting member 701. Specifically, a first fixing portion 7021 is disposed at a first end of the fixing member 702, and two fixing posts 7022 are disposed at a second end of the fixing member 702. The bottom surfaces of the two fixing columns 7022 are connected with the second end of the fixing piece 702, the first side surfaces of the two fixing columns 7022 are connected with the middle of the third connecting surface 70113, and an included angle between the second side surfaces of the two fixing columns 7022 and the bottom surfaces of the fixing columns 7022 is smaller than 90 degrees. Wherein, first side and second side all are connected with the bottom surface.

The included angle between the second side surface of the fixing column 7022 and the bottom surface of the fixing column 7022 is less than 90 degrees, which facilitates heat dissipation of the optical fiber adapter.

The bottom surface of the fixing member 702 is parallel to the bottom surface of the lower case 202. The bottom surface of the fixing member 702 is parallel to the bottom surface of the lower case 202, increasing the contact area between the bottom surface of the fixing member 702 and the bottom surface of the lower case 202, and increasing the stability of the fixing member 702 and the bottom surface of the lower case 202. Here, the bottom surface of the fixing member 702 refers to a surface of the fixing member 702 close to the bottom surface of the lower case 202.

The shape of the first fastening portion 7021 may be the same as or different from that of the second fastening portion 2021. When the shape of the first fixing portion 7021 is different from the shape of the second fixing portion 2021, the second fixing portion 2021 may be inserted into the first fixing portion 7021 as long as the size of the first fixing portion 7021 is larger than the size of the second fixing portion 2021. Because the first fixing portion 7021 and the second fixing portion 2021 have different shapes, there are contact points between the first fixing portion 7021 and the second fixing portion 2021, but there are fewer contact points, so that the second fixing portion 2021 is easily separated from the first fixing portion 7021, and the stability of the optical fiber spacing assembly 700 and the lower housing 202 is reduced.

When the shape of the first fixing portion 7021 is the same as the shape of the second fixing portion 2021, the size of the first fixing portion 7021 may be equal to or larger than the size of the second fixing portion 2021. When the size of the first fixing portion 7021 is slightly larger than the size of the second fixing portion 2021, contact points between the second fixing portion 2021 and the first fixing portion 7021 increase. Therefore, although the second fixing portion 2021 is also easily separated from the first fixing portion 7021, the second fixing portion 2021 is more difficult to separate from the first fixing portion 7021 when the first fixing portion 7021 and the second fixing portion 2021 have different shapes, which increases the stability of the optical fiber limiting assembly 700 and the lower housing 202. When the size of the first fixing portion 7021 is equal to the size of the second fixing portion 2021, there is no gap (the most contact points) between the second fixing portion 2021 and the first fixing portion 7021, so that the second fixing portion 2021 is not easily separated from the first fixing portion 7021, and the stability of the optical fiber limiting assembly 700 and the lower housing 202 is further increased.

The first fixing portion 7021 may be a fixing hole, a fixing protrusion, or the like. When the first fixing portion 7021 is a fixing hole, the second fixing portion 2021 is a fixing protrusion. When the first fastening portion 7021 is a fastening protrusion, the second fastening portion 2021 is a fastening hole. The first fixing portion 7021 and the second fixing portion 2021 may have other structures as long as they are provided to correspond to each other and integrally engaged with each other. Accordingly, the present application is not limited.

The fiber stopper 703 is used to define the position of the optical fiber on the optical port side. Specifically, the optical fiber stopper 703 includes a first stopper protrusion 7032. The first limit protrusion 7032 is used to limit the position of the optical fiber at the optical port side, so that the optical fiber at the optical port side is fixed conveniently, the optical fiber at the optical port side is prevented from entering the upper shell and contacting the lower shell, and the damage to the optical fiber is reduced.

The optical fiber is wound from the optical port direction to the electric port direction and then is wound back from the electric port direction to the optical port direction. The first stopper protrusion 7032 not only defines an optical fiber that winds from the optical port direction to the electrical port direction, but also defines an optical fiber that winds from the electrical port direction back to the optical port direction.

The fiber stop 703 also includes a fiber winding portion 7031. In particular, the method comprises the following steps of,

the fiber-winding portion 7031 is fixed to the bottom surface of the lower housing 202 and includes an eighth connection surface 70311, a ninth connection surface 70312, and a tenth connection surface 70313. Wherein, the eighth connection surface 70311, the ninth connection surface 70312 and the tenth connection surface 70313 are connected in sequence.

The eighth connection surface 70311 is connected to the bottom surface of the lower housing 202 (i.e., the fiber winding portion 7031 is fixed to the bottom surface of the lower housing 202), the ninth connection surface 70312 is connected to the second clamping surface 20221, a first end of the tenth connection surface 70313 extends out of the first limiting protrusion 7032 along the upper housing direction, and a second end of the tenth connection surface 70313 is connected to the fourth connection surface of the connection member 701.

The fiber winding portion 7031 is used for winding a fiber. Specifically, when the optical fiber winds from the optical port direction to the electrical port direction, the optical fiber does not pass through the fiber winding portion 7031; when the optical fiber winds from the direction of the electric port to the direction of the optical port, the optical fiber is connected with the optical fiber connector 600 through the fiber winding part 7031 and the first limiting protrusion 7032.

The eighth connection face 70311 is parallel to the bottom face of the lower case 202. The eighth connecting surface 70311 is in parallel contact with the bottom surface of the lower housing 202, and a contact surface between the optical fiber limiting element 703 and the lower housing 202 is increased, so that the optical fiber limiting element 700 is more stably fixed on the bottom surface of the lower housing 202, and further the light receiving element 500 is more stably fixed on the bottom surface of the lower housing 202.

The connector 701 of the optical fiber spacing assembly 700 fixes the light emitting assembly 400 to the upper surface of the light receiving assembly 500.

The securing member 702 of the fiber restraining assembly 700 secures the fiber restraining assembly 700 to the bottom surface of the lower housing 202. Since the optical fiber positioning member 700 fixes the light receiving member 500 to the bottom surface of the lower housing 202, the fixing member 702 fixes the light receiving member 500 to the bottom surface of the lower housing 202. Specifically, the eighth connection face 70311 is connected to the bottom face of the lower housing 202, the light receiving module 500 is connected to the bottom face of the lower housing 202, and the third connection face 70113 and the sixth connection face 70122 are both connected to the upper face of the light receiving module 500. When the first fixing portion 7021 is fixed to the bottom surface of the lower housing 202, the optical fiber limiting assembly 700 is fixed to the bottom surface of the lower housing 202, and the optical fiber limiting assembly 700 also fixes the light receiving assembly 500 to the bottom surface of the lower housing 202.

The optical fiber stopper 703 of the optical fiber stopper assembly 700 fixes the optical fiber at the optical port side.

In the application, the optical fiber limiting assembly 700 not only limits the optical fiber on the side of the optical port below the optical fiber limiting assembly 700, i.e. fixes the optical fiber on the side of the optical port, so as to prevent the optical fiber from entering the contact ground between the upper shell and the lower shell, and reduce the damage of the optical fiber; the light emitting module 400 is further fixed on the upper surface of the light receiving module 500, and the light receiving module 500 is fixed on the bottom surface of the lower housing 202, so that the shaking of the light emitting module 400 and the light receiving module 500 is reduced.

Fig. 12 is a schematic structural diagram of a fiber-winding frame assembly and a circuit board according to an embodiment of the present disclosure. Fig. 13 is a schematic structural diagram of a fiber-winding frame assembly according to an embodiment of the present disclosure. As shown in fig. 12 and 13, the fiber-winding frame assembly 800 includes a fourth snap 801, a fiber-winding member 802, and a support groove 803. In particular, the method comprises the following steps of,

the fourth clamping member 801 is provided with a clamping interface 8011 for clamping the fiber winding frame assembly 800 to the circuit board 300. Specifically, the side of the circuit board 300 is provided with a clamping recess 301, and the clamping recess 301 corresponds to the clamping interface 8011 of the fourth clamping member 801. When the clip interface 8011 of the fourth clip 801 is clipped in the clip recess 301, the fourth clip 801 is clipped on the circuit board 300, and then the fiber winding frame assembly 800 is clipped on the circuit board 300.

In order to define the position of the optical fiber, in the embodiment of the present application, the fourth clamping member 801 extends out of the third limiting protrusion 8012 along the direction of the upper housing 201. Specifically, the third limiting protrusion 8012 is disposed at an end of the fourth clamping member 801 far away from the fiber winding member 802, and is used to limit a position of the optical fiber on the circuit board 300 side.

The fiber winding member 802 is connected to the fourth clamping member 801, and a second limiting protrusion 8021 is disposed at a position away from the fourth clamping member 801, for fixing the optical fiber on the side of the circuit board 300. Specifically, two fourth clamping members 801 are respectively connected with two ends of the fiber winding member 802. Because the two fiber winding pieces 802 are respectively connected with two ends of the fourth clamping piece 801, the position, far away from the fourth clamping piece 801, in the fiber winding piece 802 is the middle position of the fiber winding piece 802. A plurality of second limit protrusions 8021 are provided at the middle position of the fiber winding member 802. The second limit projection 8021 is used to limit the position of the optical fiber on the circuit board 300 side and fix the optical fiber at the position.

In order to isolate the optical fiber at the side of the circuit board 300 from the circuit board 300, a support plate 8022 is further provided in the embodiment of the present application. A supporting plate 8022, which is disposed between the second limiting protrusions 8021, for supporting the circuit board side optical fiber. Since the plurality of second limit projections 8021 easily fix the optical fiber on the side of the circuit board 300 directly on the circuit board 300, it is easy to cause a heat dissipation problem of the circuit board 300 and a device placement problem on the circuit board 300. The supporting plate 8022 disposed between the plurality of second limiting protrusions 8021 can isolate the optical fiber on the circuit board 300 from the circuit board 300, which not only reduces the heat dissipation problem of the circuit board 300, but also solves the device placement problem on the circuit board 300.

The connection mode of the fiber winding piece 802 and the fourth clamping piece 801 is bonding. According to the embodiment of the application, the fiber winding piece 802 and the fourth clamping piece 801 can be connected into a whole in a bonding mode, and the fiber winding piece 802 and the fourth clamping piece 801 can be designed into an integrally formed structure.

And the supporting groove 803 is arranged at the connection position of the fiber winding piece 802 and the fourth clamping piece 801 and is used for supporting the optical fiber on the circuit board 300. Since the circuit board 300 is provided with high-frequency signal lines and many devices, the optical fiber cannot be directly laid on the surface of the circuit board 300. The support grooves 803 separate the optical fibers from the surface of the circuit board 300, which not only provides a space for placing high frequency signal lines and many devices, but also facilitates heat dissipation of the circuit board 300. Therefore, in the embodiment of the present application, a plurality of supporting grooves 803 are provided between the fiber winding member 802 and the fourth clamping member 801.

The existence of the fiber winding frame assembly 800 fixes the side light of the circuit board after being wound, further prevents the optical fiber from entering the contact between the upper shell and the lower shell, and further reduces the damage of the optical fiber.

As shown in fig. 6, when winding the fiber, first: the optical fiber extends from the first limit protrusion 7032 on the first side of the optical fiber limit assembly 700; secondly, enter the third limit protrusion 8012, the support groove 803, the second limit protrusion 8021 and the support plate 8022 on the first side of the fiber winding frame assembly 800; again, the second limit projection 8021, support groove 803, and third limit projection 8012 on the second side of the fiber winding assembly 800; then, enter the fiber winding portion 7031 of the second side of the fiber restraining assembly 700; finally, the first retention protrusion 7032 entering the second side of the fiber retention assembly 700 extends to the corresponding fiber connector.

The first limit protrusion 7032, the second limit protrusion 8021, the third limit protrusion 8012, the support plate 8022 and the support groove 803 can provide a uniform fiber winding path for the optical fiber, so that the optical fiber winding in the optical module has consistency; the optical fiber can be fixed, so that the optical fiber is prevented from entering the upper shell and contacting the lower shell, and the damage to the optical fiber is reduced.

This application, through the fixed light mouthful side optic fibre of the spacing subassembly 700 of optic fibre to through fixing circuit board side optic fibre around fiber frame subassembly 800, prevent that optic fibre from getting into to go up the casing and contact with lower casing, reduce the optic fibre and damage.

Fig. 19 is a schematic structural diagram of an optical fiber and a light receiving assembly according to an embodiment of the present disclosure. Fig. 20 is a schematic structural diagram of a light receiving assembly according to an embodiment of the present application. As shown in fig. 19 to 20, the light receiving assembly 500 is provided with a card slot 5021. In particular, the method comprises the following steps of,

the light receiving module 500 includes a first housing 501 and a second housing 502, the first housing 501 is connected to the second housing 502 in a snap-fit manner, the upper surface of the first housing 501 is connected to the light emitting module 400 and the connector 701, the bottom surface of the second housing 502 is connected to the bottom surface of the lower housing 202 (i.e., the second housing 502 is fixed to the bottom surface of the lower housing 202), and a snap groove 5021 is disposed on the upper surface of the second housing 502.

The card slot 5021 is used to support an optical fiber connected to the light receiving module 500. Specifically, since the card slot 5021 is located at one end of the second housing 502 connected to the optical fiber, the optical fiber connected to the light receiving module 500 is placed on the card slot 5021. The card slot 5021 supports the optical fiber connected to the light receiving module 500 such that the optical fiber and the light receiving module are located at the same horizontal position, thereby reducing the falling of the optical fiber from the upper surface of the light receiving module 500 to protect the optical fiber.

Fig. 21 is a cross-sectional view of an optical module according to an embodiment of the present application. As can be seen in fig. 21, the light module further includes a first conductive pad 2025 and a second conductive pad 2012. In particular, the method comprises the following steps of,

the first conductive pad 2025 is clamped to the bottom surface of the lower housing 202 for shielding the ionizing radiation. Specifically, the first conductive pad 2025 is clamped in the first fixing groove on the bottom surface of the lower housing 202. The first fixing groove is used for placing the optical fiber connector 600. When the first conductive pad 2025 is clamped in the first fixing groove, the first conductive pad 2025 contacts the optical fiber connector 600, so that the first conductive pad 2025 shields the optical fiber connector 600 from ionizing radiation.

The second conductive pad 2012 is clamped to the inner surface of the upper housing 201 for shielding the ionizing radiation. Specifically, the second conductive pad 2012 is clamped in the second fixing groove on the inner surface of the upper housing 201. The second fixing groove is matched with the first fixing groove for placing the optical fiber connector 600. When the second conductive pad 2012 is engaged in the second fixing groove, the second conductive pad 2012 contacts the optical fiber connector 600, so that the second conductive pad 2012 shields the ionizing radiation of the optical fiber connector 600.

As shown in fig. 21, the optical module further includes an optical port claw 900. In particular, the method comprises the following steps of,

the optical interface claw 900 is clamped to the inner surface of the upper housing 201, and is used for fixing the optical fiber outside the optical module on the optical module. Specifically, the light opening claw 900 is located at the light opening position of the upper case 201. When an optical fiber outside the optical module is inserted into the optical fiber connector 600 at the optical port position of the optical module, the optical port claws 900 fix the optical fiber to the optical module.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solutions of the present disclosure, not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A light module, comprising:

the lower shell and the upper shell form a shell with a light port;

a circuit board disposed in the housing;

the light emitting component is stacked with the light receiving component, is electrically connected with the circuit board and comprises a fiber adapter for emitting optical signals;

the optical fiber limiting assembly is arranged in the shell, comprises a connecting piece, a fixing piece and an optical fiber limiting piece, is used for limiting the position of an optical fiber at the optical port side, is also used for fixing the light emitting assembly on the upper surface of the light receiving assembly and fixing the light receiving assembly on the bottom surface of the lower shell;

the middle end of the connecting piece is connected with the fixing piece, the two ends of the connecting piece are respectively connected with the optical fiber limiting piece, the connecting piece is fixed on the upper surface of the light receiving assembly and comprises a first connecting part, a second connecting part and a third connecting part;

two ends of the first connecting part are respectively connected with the second connecting part and the third connecting part, and the first connecting part comprises a first connecting surface, a second connecting surface and a third connecting surface;

the second connection surface, the first connection surface, and the third connection surface are connected in sequence;

the first connecting surface is connected with the upper surface of the light receiving component and is provided with a fixing groove;

the second connecting surface is connected with the first end of the light emitting component;

two ends of the third connecting surface are respectively connected with the second connecting part and the third connecting part, and the middle of the third connecting surface is connected with the fixing piece;

the second connecting part comprises a fourth connecting surface, a fifth connecting surface, a sixth connecting surface and a seventh connecting surface;

the fourth connecting surface, the fifth connecting surface, the sixth connecting surface and the seventh connecting surface are connected in sequence;

the sixth connecting surface is connected with the upper surface of the light receiving component;

the seventh connecting surface is connected with the third connecting surface;

the fixing piece is fixed on the bottom surface of the lower shell and used for fixing the light receiving assembly on the bottom surface of the lower shell.

2. The optical module of claim 1, wherein the fixture includes a first fixture portion;

the first fixing part is connected with the second fixing part in a clamping mode and used for fixing the light receiving assembly on the bottom surface of the lower shell.

3. The optical module according to claim 2, wherein the bottom surface of the lower housing is further provided with a first clamping member;

the first clamping piece comprises a first clamping surface, a second clamping surface, a third clamping surface and a fourth clamping surface;

the first clamping surface, the second clamping surface, the third clamping surface and the fourth clamping surface are connected in sequence;

the first clamping surface is connected with the bottom surface of the lower shell;

the third clamping surface is connected with the fifth connecting surface and is an inclined surface;

the fourth clamping surface is connected with the sixth connecting surface.

4. The optical module according to claim 3, wherein a second clamping member is further disposed on a bottom surface of the lower housing;

the second clamping piece is positioned at the second end of the light receiving component, limits the position of the light receiving component with the first clamping piece, and limits the position of the light emitting component with the second connecting surface.

5. The optical module according to claim 4, wherein a height difference of the second clamping member is larger than a height difference of the light receiving component.

6. The optical module according to claim 3, wherein the optical fiber stopper is connected to one end of the connector, and is provided with a fiber winding portion;

the fiber winding part comprises an eighth connecting surface, a ninth connecting surface and a tenth connecting surface;

the eighth connecting surface is connected with the bottom surface of the lower shell;

the ninth connecting surface is connected with the second clamping surface;

a first end of the tenth connecting surface extends out of the first limiting bulge along the direction of the upper shell, and a second end of the tenth connecting surface is connected with the fourth connecting surface;

the first limiting bulge is used for limiting the position of the optical fiber at the optical port side.

7. The optical module of claim 2, wherein the first connecting surface is parallel to an upper surface of the light receiving element.

8. The optical module according to claim 6, wherein the eighth connection surface is parallel to the bottom surface of the lower housing, and the ninth connection surface is parallel to the second clamping surface.

9. The optical module of claim 1, further comprising a fiber-winding assembly:

the fiber winding frame component comprises a fourth clamping piece and a fiber winding piece, wherein,

the fourth clamping piece is provided with a clamping interface corresponding to the clamping recess on the side edge of the circuit board and used for clamping the fiber winding frame assembly on the circuit board;

the fiber winding piece is connected with the fourth clamping piece, and a second limiting bulge is arranged at a position far away from the fourth clamping piece and used for fixing the circuit board side optical fiber.