CN215895039U

CN215895039U - Optical module

Info

Publication number: CN215895039U
Application number: CN202122403832.6U
Authority: CN
Inventors: 崔伟
Original assignee: Hisense Broadband Multimedia Technology Co Ltd
Current assignee: Hisense Broadband Multimedia Technology Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-02-22
Anticipated expiration: 2031-09-30

Abstract

The application provides an optical module, includes: an upper housing; the lower shell is covered and connected with the upper shell; the optical fiber adapter is matched and connected with the upper shell and the lower shell; a shielding gasket for sealingly connecting the upper housing, the lower housing and the fiber optic adapter; wherein the shielding gasket comprises: first half piece, second half piece and setting are in the draw-in groove at first half piece and second half piece top, the bottom of first half piece with go up the casing cooperation and connect, the bottom of second half piece with casing cooperation connection down, draw-in groove on first half piece with half piece draw-in groove cooperation sealing connection of second the optical fiber adapter. The application provides an optical module, through including half first and half shielding gasket cooperation connection upper housing and lower casing respectively of second, make things convenient for shielding gasket's assembly.

Description

Optical module

Technical Field

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

Background

With the development of new services and application modes such as cloud computing, mobile internet, video and the like, the development and progress of the optical communication technology become increasingly important. In the optical communication technology, an optical module is a tool for realizing the interconversion of optical signals and is one of the key devices in optical communication equipment.

With the development of the optical communication industry, along with the discussion and evolution of the problems of photoelectric performance index, reliability, EMI (electromagnetic radiation compatibility), ESD (electrostatic discharge) and the like, the optical communication equipment brings convenience to people and brings negative effects, for example, if RE (electromagnetic radiation) exceeds standard, human body discomfort may be caused in a short term, human body cell aging degradation may be caused in a long term, human body life may be significantly influenced, and the like. Therefore, in the development process of the optical module, the negative effects generated by the optical module need to be continuously reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an optical module, which is convenient for assembling a shielding gasket so as to ensure the electromagnetic shielding performance of the optical module.

The application provides an optical module, includes:

an upper housing;

the lower shell is covered and connected with the upper shell;

the optical fiber adapter is matched and connected with the upper shell and the lower shell;

a shielding gasket for sealingly connecting the upper housing, the lower housing and the fiber optic adapter;

wherein the shielding gasket comprises: first half piece, second half piece and setting are in the draw-in groove at first half piece and second half piece top, the bottom of first half piece with go up the casing cooperation and connect, the bottom of second half piece with casing cooperation connection down, draw-in groove on first half piece with half piece draw-in groove cooperation sealing connection of second the optical fiber adapter.

In the optical module that this application provided, the shielding gasket includes half first and half second, and the top of half first and half second sets up the draw-in groove that is used for the cooperation to connect the optic fibre adapter, and the casing is connected in the bottom cooperation of half first, and the casing is down connected in the bottom cooperation of half second. When the shielding gasket is assembled, the first half piece is assembled to the upper shell and the second half piece is assembled to the lower shell; assembling the optical fiber adapter on the lower shell, and matching the second half piece with the lower shell to relatively fix the optical fiber adapter on the lower shell; and finally, the upper shell and the lower shell are covered and fixed, so that the first half piece and the second half piece are matched and sealed to connect the upper shell, the lower shell and the optical fiber adapter. Like this among the optical module that this application provided, cooperate respectively through the shielding gasket that includes first half and second half and connect upper housing and lower casing, make things convenient for the assembly of shielding gasket.

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 diagram of an optical communication system connection according to some embodiments;

figure 2 is a block diagram of an optical network terminal according to some embodiments;

fig. 3 is a schematic structural diagram of a light module according to some embodiments;

FIG. 4 is an exploded view of a light module according to some embodiments;

FIG. 5 is a first schematic view of an assembly of a first fiber optic adapter, a second fiber optic adapter, and a lower housing according to some embodiments;

FIG. 6 is an exploded view of a first fiber optic adapter, a second fiber optic adapter and a lower housing according to some embodiments;

FIG. 7 is a first schematic diagram of a first fiber optic adapter according to some embodiments;

FIG. 8 is a second schematic structural view of a first fiber optic adapter according to some embodiments;

FIG. 9 is a schematic view of a partial structure of a lower housing according to an embodiment of the present disclosure;

FIG. 10 is a second schematic view of an assembly of a first fiber optic adapter, a second fiber optic adapter, and a lower housing according to some embodiments;

FIG. 11 is a schematic structural view of a shielding gasket provided in accordance with some embodiments;

FIG. 12 is a schematic view of a shield gasket assembled with a fiber optic adapter according to some embodiments;

FIG. 13 is an exploded view of a shielding gasket and fiber optic adapter according to some embodiments;

FIG. 14 is a schematic view of an assembly of a lower housing and a shield gasket provided in accordance with some embodiments;

FIG. 15 is an assembled schematic view of a lower housing, shielding gasket, and fiber optic adapter provided in accordance with some embodiments;

FIG. 16 is a partial schematic structural view of an upper housing provided in accordance with some embodiments;

FIG. 17 is a schematic view of an upper housing and shield gasket assembly provided in accordance with some embodiments;

FIG. 18 is an assembled schematic view of an upper housing, shielding gasket, and fiber optic adapter provided in accordance with some embodiments;

FIG. 19 is a schematic diagram of an exemplary embodiment of an optical transmitter sub-module, an optical receiver sub-module and a circuit board assembly;

FIG. 20 is a first block diagram illustrating a tosa according to some embodiments;

FIG. 21 is a second block diagram illustrating a tosa according to some embodiments;

FIG. 22 is an exploded view of a tosa according to some embodiments;

FIG. 23 is a first cross-sectional view of a tosa according to some embodiments;

FIG. 24 illustrates a second cross-sectional view of a tosa according to some embodiments;

FIG. 25 provides an exploded schematic view of a device on a circuit board according to some embodiments;

FIG. 26 is an exploded view of a cover plate and chamber provided in accordance with some embodiments;

FIG. 27 is a schematic view of an assembly of a cover plate and a cavity provided in accordance with some embodiments;

FIG. 28 is a schematic diagram of a chamber provided in accordance with some embodiments;

FIG. 29 is a cross-sectional view of a chamber provided in accordance with some embodiments;

fig. 30 is a cross-sectional view of an assembly of a cavity and a circuit board according to some embodiments.

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 several kilometers (6 kilometers to 8 kilometers), on the basis of which 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 bi-directional 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) and the like 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 the structure of the optical module 200 of the optical network terminal 100 in order to clearly show the 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 101.

Fig. 3 is a diagram of an optical module provided in accordance with some embodiments, and fig. 4 is an exploded structural view of an optical module provided in accordance with 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.

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 to cover the upper housing 201 on 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.

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 a housing thereof, and the unlocking component 203 is configured to realize 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 members 203 are located on the outer walls of the two lower side plates of the lower housing 202, and include snap-fit members that mate 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 the unlocking member, and the connection relationship between the engaging member and the upper computer is changed, so that the engagement relationship between the optical module 200 and the upper computer is released, and 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 perform a bearing function due to its relatively rigid 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 cage of the upper computer, and in some embodiments disclosed in the application, a metal pin/golden finger is formed on the surface of the tail end of 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.

In some embodiments, an optical transceiver includes an tosa and an rosa. As shown in fig. 4, the optical transceiver includes an tosa 400 and an rosa 500 electrically connected to the circuit board 300, the tosa 400 is connected to the first fiber adapter 206 through a first fiber 2061, and the rosa 500 is connected to the second fiber adapter 207 through a second fiber 2071. When the optical module is used, an optical port of the optical module is connected with two external optical fibers, one end of the first optical fiber adapter 206 is connected with the first optical fiber 2061, the other end of the first optical fiber adapter is used for connecting one of the external optical fibers, one end of the second optical fiber adapter 207 is connected with the second optical fiber 2071, the other end of the second optical fiber adapter is used for connecting the other external optical fiber, and further optical connection between the internal optical fiber of the optical module and the external optical fiber is realized through the optical fiber adapters; the signal light generated by the tosa 400 is transmitted to the first optical fiber 2061, then transmitted to the first fiber adapter 206 via the first optical fiber 2061, and finally transmitted to the one external optical fiber via the first fiber adapter 206; the signal light transmitted by another external optical fiber is transmitted to the second optical fiber adapter 207, transmitted to the second optical fiber 2071 through the second optical fiber adapter 207, and finally transmitted to the light receiving sub-module 500 through the second optical fiber 2071.

In fig. 4, the tosa 400 and the tosa 500 are split structures, but the present application is not limited to the structure shown in fig. 4, in the embodiment of the present application, the tosa 400 and the tosa 500 may be a transceiver structure, and further, in the embodiment of the present application, the optical fiber adapters are not limited to two optical fiber adapters, but may also be one optical fiber adapter.

In the embodiment of the present application, the first fiber optic adapter 206 and the second fiber optic adapter 207 are respectively disposed at the optical ports of the optical module, and corresponding fixing mechanisms are respectively disposed on the upper housing 201 and the lower housing 202, so as to fix the first fiber optic adapter 206 and the second fiber optic adapter 207. FIG. 5 is a first schematic view of an assembly of a first fiber optic adapter, a second fiber optic adapter, and a lower housing according to some embodiments; FIG. 6 is an exploded view of a first fiber optic adapter, a second fiber optic adapter, and a lower housing according to some embodiments. As shown in fig. 5 and 6, the first adapter holder 2021 is disposed at one end of the lower housing 202, where the optical port 205 is disposed; corresponding second adapter holders are also arranged on the corresponding upper housing 201, and the first adapter holder 2021 is matched with the adapter holder on the upper housing 201 to fix the first fiber adapter 206 and the second fiber adapter 207. In some embodiments, the first adapter holder 2021 is provided with a first mounting groove set 2022 and a second mounting groove set 2023, the first mounting groove set 2022 is used for fixing the first optical fiber adapter 206, and the second mounting groove set 2023 is used for fixing the second optical fiber adapter 207. Optionally, a third installation groove group and a fourth installation groove group are disposed on the upper housing 201, the third installation groove group and the second installation groove group 2023 cooperate to fix the first optical fiber adapter 206, and the second installation groove group 2023 and the fourth installation groove group cooperate to fix the second optical fiber adapter 207.

Fig. 7 is a first schematic structural diagram of a first fiber optic adapter according to some embodiments, and fig. 8 is a second schematic structural diagram of a first fiber optic adapter according to some embodiments. As shown in fig. 7 and 8, the first fiber optic adapter 206 provided by the embodiments of the present application includes an adapter body 601 and a protrusion 602, where the protrusion 602 is located on a surface of the adapter body 601, and the protrusion 602 protrudes relative to the adapter body 601. In order to meet the requirements of the optical module protocol, the adapter body 601 is of a cylindrical structure, one end of the adapter body is of a hollow structure and is used for being connected with an external optical fiber in an adaptive mode, the other end of the adapter body is connected with the first optical fiber 2061, and the end portion of the first optical fiber 2061 extends into the other end of the adapter body 601. The protrusion 602 is a circular ring or a partial circular ring, and is configured to be clamped in the first installation groove set 2022, so that the first installation groove set 2022 can limit and fix the first optical fiber adapter 206. In the embodiment of the present application, the structure and the fixing manner of the second fiber optic adapter 207 can be referred to as the first fiber optic adapter 206.

The protrusion 602 can generally only define the first fiber optic adapter 206 along the length of the optical module, such that the first fiber optic adapter 206 is not movable along the length of the optical module, and the first fiber optic adapter 206 is also rotatable within the first set of mounting slots 2022; in use, it has been found that excessive rotation of the first fiber optic adapter 206 can cause tearing of the first optical fiber 2061, which in turn can cause failure of the optical module output optical path. In order to prevent the first fiber optic adapter 206 from being rotated excessively, the first fiber optic adapter 206 provided in the embodiment of the present application further includes a positioning mechanism 603, and the positioning mechanism 603 is used to achieve radial positioning of the first fiber optic adapter 206 and prevent the first fiber optic adapter 206 from being rotated radially. The positioning mechanism 603 can be disposed on the protrusion 602, and thus the protrusion 602 and the positioning mechanism 603 can be combined to achieve a more secure fixation of the first fiber adapter 206 in the optical module, so as to avoid the first fiber 2061 from being torn due to the rotation of the first fiber adapter 206 during use.

Further, in some embodiments, the positioning mechanism 603 includes a first positioning face 6031 and a second positioning face 6032. Optionally, the first positioning surface 6031 and the second positioning surface 6032 are inclined surfaces, and the first positioning surface 6031 and the second positioning surface 6032 form a non-intersecting V-shaped structure, for example, the first positioning surface 6031 and the second positioning surface 6032 are symmetrically disposed on the protrusion 602. Thus, when the first optical fiber adapter 206 is assembled, the operation of workers is convenient and fool-proof.

Fig. 9 is a second schematic view of an assembly of a first fiber optic adapter, a second fiber optic adapter, and a lower housing according to some embodiments. As shown in fig. 9, the optical module provided in the embodiment of the present application further includes a shielding gasket 208, the shielding gasket 208 is sleeved on the first optical fiber adapter 206 and the second optical fiber adapter 207, and a lower portion of the shielding gasket 208 is disposed in the second limiting groove. In the embodiment of the present application, the shielding gasket 208 is made of a material having electromagnetic shielding performance and elasticity. When the assembly of the shielding gasket 208 is completed, the first optical fiber adapter 206, the second optical fiber adapter 207, the upper housing 201 and the lower housing 202 respectively press the shielding gasket 208, so that the shielding gasket 208 is hermetically connected with the first optical fiber adapter 206, the second optical fiber adapter 207, the upper housing 201 and the lower housing 202, and not only can the first optical fiber adapter 206 and the second optical fiber adapter 207 be firmly fixed, but also the electromagnetic shielding of the optical module can be performed.

Fig. 10 is a partial structural schematic view of a lower housing provided in accordance with some embodiments. As shown in fig. 10, in the lower housing 202 provided in the embodiment of the present application, the first mounting groove group 2022 and the second mounting groove group 2023 are arranged side by side on the first adapter holder 2021. The first installation groove group 2022 and the second installation groove group 2023 respectively include a first supporting groove, a second supporting groove and a first limiting groove, the first supporting groove is located on one side of the first limiting groove, and the second supporting groove is located on the other side of the first limiting groove. The first supporting groove and the second supporting groove are used for supporting the adapter body of the optical fiber adapter, and the first limiting groove is used for being matched with and connected with a positioning mechanism of the optical fiber adapter.

As shown in fig. 10, the second mounting groove group 2023 provided by the embodiment of the present application includes a first support groove 0231, a second support groove 0232, and a first limiting groove 0233. As shown in fig. 9, a first supporting groove 0231 is provided on the left side of the first spacing groove 0233, and a second supporting groove 0232 is provided on the right side of the first spacing groove 0233. The first retaining groove 0233 is used for matching with a positioning mechanism of the optical fiber adapter, that is, the shape of the first retaining groove 0233 matches with the positioning mechanism of the optical fiber adapter. Optionally, set up first holding surface and second holding surface on the lateral wall of first spacing groove 0233, first holding surface and second holding surface are the support inclined plane respectively, and first holding surface supports the first locating surface that cooperates positioning mechanism, and the second holding surface supports the second locating surface that cooperates positioning mechanism, so in assembly process, the staff's operation of being convenient for more prevents staying. Of course, in some embodiments of the present application, the first supporting surface and the second supporting surface may be disposed on the upper housing 201.

Further, in this embodiment, the first adapter holder 2021 is further provided with a second limiting groove 2024, and the second limiting groove 2024 penetrates the first mounting groove group 2022 and the second mounting groove group 2023. Optionally, the second limiting groove 2024 is located between the first limiting groove 0233 and the first supporting groove 0231, but is not limited to being located between the first limiting groove 0233 and the first supporting groove 0231. The second limiting groove 2024 is used for assembling a shielding gasket 208, and the shielding gasket 208 can be used for sealing and connecting the first fiber optic adapter 206, the second fiber optic adapter 207, the upper housing 201 and the lower housing 202, and can also be used for electromagnetic shielding at the first fiber optic adapter 206 and the second fiber optic adapter 207. The depth of the second limiting groove 2024 is selected according to the thickness of the first adapter holder 2021 on the lower housing 202 and the height of the second half 820.

In the present embodiment, the shielding gasket 208 is generally a one-piece structure and has two through holes for mounting the first fiber optic adapter 206 and the second fiber optic adapter 207. In the assembling process, the first optical fiber adapter 206 and the second optical fiber adapter 207 are assembled with the shielding gasket 208, then the bottom of the shielding gasket 208, on which the first optical fiber adapter 206 and the second optical fiber adapter 207 are assembled, is assembled into the second limit groove 2024 on the lower housing 202, and then when the upper housing 201 is assembled to the lower housing 202, the upper housing 201 is connected with the top of the shielding gasket 208 in a matching manner, so that the shielding gasket 208 is hermetically connected with the first optical fiber adapter 206, the second optical fiber adapter 207, the upper housing 201 and the lower housing 202.

Fig. 11 is a schematic structural view of a shielding gasket according to some embodiments. In some embodiments of the present application, the shielding gasket 208 includes a first half 810 and a second half 820; a first card slot 811 and a second card slot 812 are arranged on the top of the first half 810, and a third card slot 821 and a fourth card slot 822 are arranged on the top of the second half 820; first card slot 811 is disposed opposite third card slot 821, and second card slot 812 is disposed opposite fourth card slot 822. In some embodiments of the present application, the first half 810 is connected to the upper housing 201 in a matching manner, and the second half 820 is connected to the lower housing 202 in a matching manner. Of course, in the embodiment of the present application, the number and the positions of the card slots on the first half 810 and the second half 820 may be selected according to the number of the optical fiber adapters in the optical module and the positions on the optical module. The first half 810 and the second half 820 are coupled to the upper housing 201 and the lower housing 202, respectively.

Fig. 12 is an assembly diagram of a shielding gasket and a fiber optic adapter according to some embodiments, and fig. 13 is an exploded diagram of a shielding gasket and a fiber optic adapter according to some embodiments. As shown in fig. 12 and 13, the first half 810 and the second half 820 are disposed opposite to each other such that the first fiber optic adapter 206 is engaged and locked in the first card slot 811 and the third card slot 821, the second fiber optic adapter 207 is engaged and locked in the second card slot 812 and the fourth card slot 822, the first half 810 and the second half 820 are pressed toward each other, and the first half 810 and the second half 820 are engaged and sealed to connect the first fiber optic adapter 206 and the second fiber optic adapter 207. In some embodiments of the present disclosure, the first half 810 may be directly assembled and fixed to the upper housing 201 and the second half 820 may be directly assembled and fixed to the lower housing 202, and then the first fiber optic adapter 206 and the second fiber optic adapter 207 may be correspondingly assembled, so as to facilitate the assembly of the shielding gasket 208, the first fiber optic adapter 206 and the second fiber optic adapter 207.

Fig. 14 is a schematic view of an assembly of a lower housing and a shielding gasket according to some embodiments, and fig. 15 is a schematic view of an assembly of a lower housing, a shielding gasket and a fiber optic adapter according to some embodiments. As shown in fig. 14 and 15, the second half piece 820 is disposed in the second limit groove 2024 of the lower housing 202, and the bottom of the second half piece 820 is used for contacting the bottom of the second limit groove 2024; the first fiber optic adapter 206 is connected with the first installation groove set 2022 in a matching manner, the second half piece 820 supports the first fiber optic adapter 206 through the third clamping groove 821, and the first fiber optic adapter 206 is relatively fixed on the lower shell 202 by pressing the protrusion of the second half piece 820; the second fiber optic adapter 207 is connected with the second mounting groove group 2023 in a matching manner, the second fiber optic adapter 207 is connected with the fourth card slot 822 in a matching manner, the second half piece 820 supports the second fiber optic adapter 207 through the fourth card slot 822, and the second fiber optic adapter 207 is relatively fixed on the lower shell 202 by pressing the protrusion of the second half piece 820.

Fig. 16 is a partial structural schematic view of an upper housing provided according to some embodiments. As shown in fig. 16, a second adapter holder 2011 is disposed on the upper housing 201, and a third mounting groove group 2012 and a fourth mounting groove group 2013 are disposed in parallel on the second adapter holder 2011. The third mounting groove group 2012 and the fourth mounting groove group 2013 respectively include a third supporting groove, a fourth supporting groove and a fourth limiting groove, the third supporting groove is located on one side of the fourth limiting groove, and the fourth supporting groove is located on the other side of the fourth limiting groove. The third supporting groove and the fourth supporting groove are used for supporting the adapter body of the optical fiber adapter, and the fourth limiting groove is used for being matched with the protrusion of the optical fiber adapter.

As shown in fig. 16, the fourth mounting groove group 2013 provided in the embodiment of the present application includes a third support groove 0131, a fourth support groove 0132, and a fourth limiting groove 0133. As shown in fig. 16, a third supporting groove 0131 is provided on the left side of the fourth limiting groove 0133, and a fourth supporting groove 0132 is provided on the right side of the fourth limiting groove 0133. The fourth limiting groove 0133 is used for matching with the protrusion of the fiber optic adapter, i.e. the shape of the fourth limiting groove 0133 matches with the protrusion of the fiber optic adapter.

In some embodiments of the present application, a fifth limiting groove 2014 is further disposed on the second adaptor holder 2011, and the fifth limiting groove 2014 penetrates through the third supporting groove 0131 and the fourth supporting groove 0132. Optionally, the fifth limiting groove 2014 is located between the fourth limiting groove 0133 and the third supporting groove 0131, but is not limited to being located between the fourth limiting groove 0133 and the third supporting groove 0131. The fifth limiting groove 2014 is used for matching and assembling the shielding gasket 208, so that the shielding gasket 208 can be used for sealing and connecting the first fiber optic adapter 206, the second fiber optic adapter 207, the upper shell 201 and the lower shell 202, and can also be used for electromagnetic shielding at the first fiber optic adapter 206 and the second fiber optic adapter 207. The depth of the fifth limiting groove 2014 is selected according to the thickness of the second adapter holder 2011 on the upper housing 201 and the height of the first half 810.

Fig. 17 is a schematic view of an upper housing and a shielding gasket according to some embodiments, and fig. 18 is a schematic view of an upper housing, a shielding gasket and a fiber optic adapter according to some embodiments. As shown in fig. 17 and 18, the first half 810 is disposed in the fifth limiting groove 2014 of the upper housing 201, and the bottom of the first half 810 is used for contacting the bottom of the fifth limiting groove 2014; the first fiber optic adapter 206 is connected with the third mounting groove set 2012 in a matching manner, the first half piece 810 supports the first fiber optic adapter 206 through the first clamping groove 811, and the first fiber optic adapter 206 is relatively fixed with the upper shell 201 by pressing the protrusion of the first half piece 810; the second fiber optic adapter 207 is connected with the fourth installation groove group 2013 in a matching mode, the second fiber optic adapter 207 is connected with the second clamping groove 812 in a matching mode, the first half piece 810 supports the second fiber optic adapter 207 through the second clamping groove 812, and the second fiber optic adapter 207 is fixed relative to the upper shell 201 through the first half piece 810 extruding the protrusion of the first half piece 810.

In the present embodiment, after the upper housing 201 and the lower housing 202 are assembled, the fifth limiting groove 2014 presses the first half 810, and the second limiting groove 2024 presses the second half 820, so that the first half 810 and the second half 820 are pressed and sealed to the first fiber optic adapter 206 and the second fiber optic adapter 207.

Fig. 19 is a first schematic view illustrating an assembly structure of the tosa, the rosa and the circuit board according to some embodiments. As shown in fig. 19, in the present embodiment, a mounting hole 301 is formed on the circuit board 300, and the tosa 400 is embedded in the mounting hole 301; the light receiving sub-module 500 is disposed on a surface of the circuit board 300. Optionally, the tosa 400 is close to one side of the circuit board 300, and the rosa 500 is close to the other side of the circuit board 300; the mounting hole 301 is close to one side of the circuit board 300 and located at the edge of the circuit board 300, although the mounting hole 301 may also be located in the middle of the circuit board 300; the tosa 400 is embedded in the mounting hole 301 of the circuit board so that the circuit board 300 can be inserted into the tosa 400, and the tosa 400 and the circuit board 300 can be fixed together.

Fig. 20 is a first schematic structural diagram of a tosa according to some embodiments, fig. 21 is a second schematic structural diagram of a tosa according to some embodiments, and fig. 22 is an exploded schematic diagram of a tosa according to some embodiments. As shown in fig. 20 to 22, the tosa 400 provided by the embodiment of the present invention includes a cavity 401, and the cavity 401 is internally provided with electrical devices, optical devices, and the like for light emission; a through hole 4011 is formed in one side wall of the cavity 401, and the through hole 4011 is used for realizing optical connection between the light emission sub-module 400 and the first optical fiber 2061; an opening 4012 is disposed on one sidewall of the cavity 401, and the opening 4012 is used for inserting the circuit board 300, so as to facilitate electrical connection between the electrical device in the cavity 401 and the circuit board 300. Optionally, one end of the cavity 401 is provided with a through hole 4011, the other end of the cavity is provided with an opening 4012, and the through hole 4011 and the opening 4012 are arranged on the cavity 401 along the length direction of the optical module, so that the arrangement and installation of electrical devices and optical devices in the tosa 400 are facilitated.

As shown in fig. 20 to 22, the tosa 400 provided by the embodiment of the present application further includes a laser component 402, the laser component 402 is disposed in the cavity 401, and the laser component 402 is configured to generate signal light; in the embodiment of the present application, the laser assembly 402 is not limited to the one shown in fig. 20 to 22, and may be plural. In the present embodiment, laser assembly 402 includes a laser chip, a metalized ceramic, or the like; a common light emitting chip of the optical module is a laser chip, the laser chip is arranged on the surface of the metallized ceramic, and the surface of the metallized ceramic forms a circuit pattern which can supply power to the laser chip; meanwhile, the metallized ceramic has better heat conduction performance and can be used as a heat sink of the laser chip for heat dissipation. The laser module 402 may further include an optical lens for converging light, and the light emitted from the light emitting chip is in a divergent state, which needs to be converged for facilitating subsequent optical path design and optical coupling into the optical fiber. The common convergence is to converge divergent light into parallel light, and converge divergent light and parallel light into convergent light.

A semiconductor cooler 404 (TEC) may also be included in the tosa depending on the transmission design and the characteristics of the laser chip. The TEC404 is directly or indirectly disposed on the bottom surface of the cavity 401, the metalized ceramic is disposed on the surface of the TEC404, and the TEC404 is used to balance heat to maintain a set operating temperature of the laser chip.

In order to facilitate the optical connection between the first optical fiber 2061 and the tosa 400, the other end of the first optical fiber 2061 is provided with an optical fiber connector, the optical fiber connector is connected to the cavity 401, and the end of the optical fiber connector extends into the cavity 401; as shown in fig. 20-22, the optical fiber connector includes an optical fiber ferrule 2063 therein, an optical fiber sleeve 2062 is disposed outside the optical fiber ferrule 2063, the optical fiber sleeve 2062 wraps the outer wall of the optical fiber ferrule 2063, and the first optical fiber 2061 optically connects the optical fiber ferrule 2063. Optionally, the end 063 of the fiber ferrule 2063 extends beyond the fiber sleeve 2062 and is located outside of the fiber sleeve 2062; when the fiber optic sleeve 2062 is assembled into the connection cavity 401, the fiber optic sleeve 2062 is inserted into the through hole 4011 and the end 063 extends into the cavity 401.

The first optical fiber 2061 is a thin and flexible optical fiber, which is not easy to be fixed in position with the tosa with high precision, so that the end of the first optical fiber 2061 can be fixed by combining the optical fiber ferrule 2063 with the optical fiber sleeve 2062. The fiber ferrule 2063 may be formed by wrapping the end of the first fiber 2061 with a ceramic material, the first fiber 2061 is used for guiding light, and the ceramic has high processing precision and can realize high-precision position alignment. Generally, the ceramic is processed into a cylinder, a linear through hole is formed in the center of the ceramic cylinder, and the optical fiber is inserted into the through hole of the ceramic cylinder to be fixed, so that the optical fiber is straightly fixed in the ceramic body. In the optical fiber ferrule 2063, the axial direction of the optical fiber is parallel to the axial direction of the ceramic cylinder. The optical fiber sleeve 2062 is sleeved on the optical fiber ferrule 2063 and can be used for protecting the optical fiber ferrule 2063. Optionally, the side wall of the through hole 4011 is bonded to the outside of the optical fiber sleeve 2062 by glue, so that the connection firmness of the optical fiber sleeve 2062 and the cavity 401 is ensured.

The fiber optic sleeve 2062 is annular in shape and, to facilitate gripping of the fiber optic sleeve 2062, as shown in FIG. 22, the outer wall of the fiber optic sleeve 2062 is provided with gripping surfaces 0621, the gripping surfaces 0621 being distal from the end portions 063, the gripping surfaces 0621 being used to facilitate assembly of the first optical fiber 2061 in the cavity 401. Like this when assembly connection first optical fiber 2061 and cavity 401, if use tweezers etc. to carry holding surface 0621, conveniently press from both sides and be convenient for the application of force, and then set up holding surface 0621 and make the assembly simpler.

Fig. 23 is a cross-sectional view showing a tosa according to some embodiments, as shown in fig. 20, 21 and 23, a third limiting groove 4013 is formed in a cavity 401, and the third limiting groove 4013 is located at a side of the through hole 4011 and communicates with the through hole 4011; the end 063 is located in the third stopper groove 4013 and the bottom side of the end face of the end 063 abuts against the side wall of the third stopper groove 4013, so that the third stopper groove 4013 can be used for positioning for assembling the first optical fiber 2061. In the embodiment of the present application, the third limiting groove 4013 is provided for positioning the first optical fiber 2061 during assembly, but should not interfere with the receiving light of the optical fiber ferrule 2063, so the depth of the third limiting groove 4013 needs to be controlled; when the positioning strength of the third stopper groove 4013 with respect to the first optical fiber 2061 needs to be ensured, the third stopper groove 4013 may be appropriately deepened, but a notch may be provided in the receiving direction of the optical fiber ferrule 2063, through which light passes.

In the embodiment of the present application, the face of the end portion 063 includes an angled face, i.e., the face of the end portion 063 is angled at an angle other than 90 ° to the axis of the fiber ferrule 2063. Optionally, the end face of the end portion 063 is angled at 2-7, i.e., the end face of the end portion 063 is angled 83-87 with respect to the axis of the fiber ferrule 2063. Preferably, the angle of inclination of the end face of the end portion 063 is either 3 ° or 4 °.

Fig. 24 is a second cross-sectional view of a tosa according to some embodiments. As shown in fig. 24, the end portion 063 includes an inclined surface 0631 and a vertical surface 0632, the inclined surface 0631 forms an angle other than 90 ° with respect to the axis of the fiber ferrule 2063, and the vertical surface 0632 forms an angle of 90 ° with respect to the axis of the fiber ferrule 2063; in the orientation shown in fig. 24, inclined surface 0631 is located on the upper side of end 063 for transmitting signal light, vertical surface 0632 is located on the lower side of end 063, and vertical surface 0632 bears against the side wall of third limiting groove 4013. End portion 063 thus includes inclined face 0631 and vertical face 0632 to facilitate ensuring the assembled configuration of end portion 063 in chamber 401.

In the embodiment of the present application, the signal light generated by the laser module 402 is transmitted to the end of the first optical fiber 2061 via the optical device in the cavity 401, and then enters the first optical fiber 2061, so as to ensure the straight-through rate of the output light of the laser module, the light output optical axis of the laser module 402 and the axis of the end of the first optical fiber 2061 should have a smaller tolerance as much as possible, that is, the light output optical axis of the laser module and the axis of the end of the first optical fiber 2061 should be coaxial as much as possible. Therefore, in the embodiment of the present application, in order to reduce the tolerance between the light-emitting optical axis of the laser module 402 and the axis of the end portion of the first optical fiber 2061, the combination end portion 063 is located outside the optical fiber sleeve 2062, two sides of the end portion 063 of the optical fiber ferrule 2063 are polished above the cavity 401, and a center line is made, and the laser module 402 is located by taking the center line as the axis of the end portion of the first optical fiber 2061. The axis of the first optical fiber 2061 is determined by directly locating and identifying the end 063 of the optical fiber ferrule 2063, so that the accuracy of identifying the axis of the end of the first optical fiber 2061 is ensured, and the surface-mounted laser assembly is located according to the identified fiber core axis of the first optical fiber 2061, so that the tolerance between the light-emitting optical axis of the laser assembly and the fiber core end face axis of the first optical fiber 2061 is reduced, and the straight-through rate of the output light of the laser assembly is ensured.

Further, in some embodiments of the present invention, the tosa 400 further includes an isolator 403, the isolator 403 is disposed on the optical path from the laser component 402 to the fiber optic connector 2062, and the isolator 403 is near the fiber optic connector 2062 for preventing light reflected by the fiber optic connector 2062 and the end of the first optical fiber 2061 from entering the output optical path of the tosa 400 again.

In some embodiments of the present application, the tosa 400 further includes a collimating lens 405, and the collimating lens 405 is located between the isolator 403 and the laser component 402 and on the optical path from the laser component 402 to the isolator 403, and is configured to collimate the signal light generated by the laser component 402 and converge divergent light output by the laser chip into parallel light.

In the embodiment of the present application, the rosa 500 includes an optical device and a photoelectric conversion device. Wherein: the optical device may be an optical fiber connector, an Arrayed Waveguide Grating (AWG), a lens, etc., but is not limited to the optical fiber connector, the AWG, the lens, etc.; the photoelectric conversion device includes a light receiving chip, a transimpedance amplifier, and the like, and the light receiving chip is a PD (photodetector), such as an APD (avalanche photo diode) or a PIN-PD (photodiode), and is configured to convert received signal light into photocurrent. The second optical fiber 2071 transmits the signal light to the optical device, then converts the optical device into a signal light beam transmission path, and finally transmits the signal light beam to the photoelectric conversion device, which receives the signal light and converts the optical signal into an electrical signal.

Fig. 25 is an exploded schematic view of a device on a circuit board provided in accordance with some embodiments. As shown in fig. 25, a laser driver chip 302 is further disposed on the circuit board 300, the laser driver chip 302 irradiates the first protection cover 303, the top of the laser driver chip 302 contacts with the inner side of the first protection cover 303, and the top of the first protection cover 303 contacts with the upper housing or the lower housing. Therefore, the first protection cover 303 may be used not only to protect the laser driving chip 302, but also to dissipate heat of the laser driving chip 302.

In some embodiments, as shown in fig. 25, the rosa 500 further includes a second protective cover 501, and the second protective cover 501 is used for covering the optical devices and the photoelectric conversion devices of the rosa 500 to protect the optical devices and the photoelectric conversion devices.

In some embodiments, as shown in FIG. 25, the tosa 400 further includes a cover plate 406, and the cover plate 406 covers the cavity 401.

Fig. 26 is an exploded view of a cover plate and a cavity provided according to some embodiments, and fig. 27 is an assembled view of a cover plate and a cavity provided according to some embodiments. In some embodiments, as shown in fig. 26 and 27, the top of the cavity 401 is provided with a first bearing surface 4014 and a first stepped surface 4015, and the first bearing surface 4014 and the first stepped surface 4015 are located at different heights on the top of the cavity 401, so that the first bearing surface 4014 and the first stepped surface 4015 can form a step therebetween, and thus when the cover plate 406 is covered on the cavity 401, the first bearing surface 4014 supports the cover plate 406, and the first stepped surface 4015 and the cover plate 406 can form a gap. The gap formed by the first stepped surface 4015 and the cover plate 406 can be used for prying open the cover plate 406 during repair of the tosa 400, thereby facilitating repair of the tosa 400. If the cavity 401 needs to be sealed, a gap formed between the first stepped surface 4015 and the cover plate 406 is sealed by using glue. Illustratively, the cover 406 is coupled to the cavity 401 by glue.

In some embodiments, as shown in fig. 26, a dispensing slot 0141 is disposed on the first supporting surface 4014, when the cover plate 406 is connected to the cavity 401 through glue, the dispensing slot 0141 can be used to store the glue, thereby effectively preventing the glue from flowing into the inner cavity of the cavity 401. For example, the dispensing slot 0141 may be cylindrical, but is not limited to cylindrical; the dispensing slots 0141 may be disposed along the side of the cavity 401. Illustratively, the first bearing surface 4014 is provided with two dispensing grooves 0141 in the length direction and the width direction of the cavity respectively, in some embodiments, the dispensing grooves 0141 can also be used for auxiliary positioning of the cavity 401 to facilitate the assembly of the device in the cavity 401.

In some embodiments, as shown in fig. 27, a positioning groove 0142 is further disposed on the first bearing surface 4014, the positioning groove 0142 is disposed on the top of the sidewall where the through hole 4011 is located; the positioning groove 0142 is used to assist in positioning the optical fiber connector. Illustratively, the positioning groove 0142 is disposed above the through hole 4011, as the positioning groove 0142 is located directly above the through hole 4011. To further facilitate the use of the positioning grooves 0142, in some embodiments, the positioning grooves 0142 are provided at the edge of the top of the cavity 401, and the end of the cover plate 406 is not flush with the end of the cavity 401, i.e., when the cover plate 406 is closed with the cavity 401, the cover plate 406 does not cover or covers part of the positioning grooves 0142. Thus, after the cover plate 406 covers the connection cavity 401, the optical fiber connector can be adjusted through the positioning groove 0142. For example, the positioning groove 0142 may be a V-shaped groove.

In some embodiments, as shown in fig. 27, a vent 4016 is further disposed on the sidewall of the cavity 401, the vent 4016 communicates with the inside of the cavity 401, and the vent 4016 is used for balancing the air pressure inside and outside the cavity 401. When the chamber 401 needs to be sealed, the vent 4016 needs to be sealed when the air pressure in the chamber 401 is sufficient. Further, in order to facilitate the sealing of the vent 4016, a fitting groove 4017 is further provided on a sidewall of the chamber body 401, the fitting groove 4017 is located at an upper portion of the vent 4016, and the fitting groove 4017 communicates with the first bearing surface 4014. The mounting slots 4017, in addition to facilitating sealing of the vent 4016, facilitate prying open of the cover plate 406 during repair of the tosa 400, thereby facilitating repair of the tosa 400.

Fig. 28 is a schematic structural view of a cavity provided according to some embodiments, fig. 29 is a sectional view of a cavity provided according to some embodiments, and fig. 30 is an assembled sectional view of a cavity and a circuit board provided according to some embodiments. As shown in fig. 28-30, the opening 4012 includes a first opening surface 0121, a second opening surface 0122, and a third opening surface 0123, the first opening surface 0121 and the second opening surface 0122 are located above the opening 4012 and at different heights above the opening 4012, the third opening surface 0123 is located below the opening 4012, and the sum of the lengths of the first opening surface 0121 and the second opening surface 0122 is greater than the length of the third opening surface 0123, so that after the cavity 401 is assembled with the circuit board 300, the circuit board 300 can be surrounded above the opening 4012, so as to facilitate the electrical connection between the electrical device in the cavity 401 and the circuit board 300.

In some embodiments, after the assembly of the cavity 401 and the circuit board 300, the second opening surface 0122 and the third opening surface 0123 are clamped to connect the circuit board 300, and there is a gap between the first opening surface 0121 and the circuit board 300. A pad is arranged on the surface of the circuit board 300 extending into the cavity 401 through the opening 4012, the first opening surface 0121 surrounds one side of the pad far away from the mounting hole 301, and the pad is used for electrically connecting an electrical device in the cavity 401, so that the electrical connection between the electrical device in the cavity 401 and the circuit board 300 is conveniently realized; certainly, the circuit board part extending into the cavity 401 is not limited to be provided with a bonding pad, and other electrical devices and the like are also arranged; there is a gap between the first open face 0121 and the circuit board 300 to facilitate device arrangement. In addition, the cavity 401 is usually a metal cavity, and the circuit board 300 needs to be provided with a high-speed signal line to transmit a high-speed signal into the cavity, so as to avoid that the sidewall of the cavity 401 is too close to the circuit board 300 to interfere with the high-speed signal transmitted on the high-speed signal line, a gap exists between the first open surface 0121 and the circuit board 300. When the sealing of the cavity 401 is required, the gap between the first open face 0121 and the circuit board 300 may be sealed by insulating glue.

In some embodiments, the rosa 500 may further include the cavity of the above structure.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application 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; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A light module, comprising:

an upper housing;

the lower shell is covered and connected with the upper shell;

wherein the shielding gasket comprises: first half piece, second half piece and setting are in the draw-in groove at first half piece and second half piece top, the bottom of first half piece with go up the casing cooperation and connect, the bottom of second half piece with casing cooperation connection down, draw-in groove on first half piece with draw-in groove cooperation cover on the second half piece is established and is connected the optical fiber adapter.

2. The optical module according to claim 1, wherein a fifth limiting groove is formed in the upper housing, a second limiting groove is formed in the lower housing, a bottom of the first half is disposed in the fifth limiting groove, and a bottom of the second half is disposed in the second limiting groove.

3. The optical module of claim 1, wherein the optical fiber adapter comprises a first optical fiber adapter, a first adapter holder is disposed on the lower housing, and a first mounting groove set is disposed on the first adapter holder;

the first optical fiber adapter comprises an adapter body, a protrusion and a positioning mechanism, wherein the adapter body, the protrusion and the positioning mechanism are connected with the first installation groove group in a matched mode.

4. The optical module according to claim 3, wherein the positioning mechanism includes a first positioning surface and a second positioning surface, the first positioning surface and the second positioning surface being provided on the protrusion.

5. The optical module of claim 3, wherein a second adapter holder is disposed on the upper housing, a third mounting slot set is disposed on the second adapter holder, and the adapter body and the protrusion are cooperatively connected to the third mounting slot set.

6. The optical module of claim 5, wherein the optical fiber adapter further comprises a second optical fiber adapter, the first adapter holder further comprises a second set of mounting slots, and the second adapter holder further comprises a fourth set of mounting slots;

the second optical fiber adapter comprises an adapter body, a protrusion and a positioning mechanism, wherein the adapter body, the protrusion and the positioning mechanism are connected with the second mounting groove group in a matched mode; the adapter body and the bulge are connected with the fourth mounting groove group in a matched mode.

7. The optical module of claim 3, wherein the first mounting slot set comprises a first support slot, a second support slot and a first position-limiting slot, the first support slot is located on one side of the first position-limiting slot, and the second support slot is located on the other side of the first position-limiting slot.

8. The optical module of claim 5, wherein the third mounting slot set comprises a third support slot, a fourth support slot and a fourth position-limiting slot, the third support slot is located on one side of the fourth position-limiting slot, and the third support slot is located on the other side of the fourth position-limiting slot.

9. The optical module according to claim 4, wherein the first positioning surface and the second positioning surface are symmetrically disposed on the protrusion;

the lower shell is provided with a first supporting surface and a second supporting surface, the first supporting surface is connected with the first positioning surface in a matched mode, and the second supporting surface is connected with the second positioning surface in a matched mode.

10. The light module of claim 1, further comprising:

the optical fiber adapter comprises an optical fiber connector, an optical fiber sleeve and a connecting piece, wherein the optical fiber connector is arranged on an optical fiber, and comprises an optical fiber inserting core through the optical fiber;

the optical fiber sub-module is connected with the optical fiber through the optical fiber joint;

the transmitter optical subassembly includes: the cavity is provided with a through hole on the side wall, a third limit groove is arranged inside the cavity, the third limit groove is located at one end of the through hole and communicated with the through hole, and the optical fiber connector is embedded in the through hole and is made of the end part of the optical fiber connector abutted against the side wall of the third limit groove.