CN217484546U

CN217484546U - Optical module

Info

Publication number: CN217484546U
Application number: CN202220699448.7U
Authority: CN
Inventors: 王斌
Original assignee: Hisense Broadband Multimedia Technology Co Ltd
Current assignee: Hisense Broadband Multimedia Technology Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-09-23
Anticipated expiration: 2032-03-28

Abstract

The application discloses optical module includes: and one end of the first optical fiber adapter is connected with the first optical fiber. And the second optical fiber adapter and the first optical fiber adapter are arranged in the same horizontal plane, and one end of the second optical fiber adapter is connected with the second optical fiber. And the light emitting component is connected with the first optical fiber. The light receiving module is located the below of light emission module, and one end and second optical fiber connection include: the light receiving base plate and the first side plate bracket and the second side plate bracket are arranged on two sides of the light receiving base plate; first curb plate support is equipped with a plurality of buckles with the second curb plate support, and adjacent buckle has the opening of different orientations. A first fiber avoiding portion adjacent to the first side plate bracket; the second optical fiber avoiding part is arranged on the opposite side of the first optical fiber avoiding part. The dodging of the portion is dodged to optic fibre through first optic fibre portion, second optic fibre in this application, reduces the angle of buckling of optic fibre, through the crisscross setting of buckle opening direction, prevents the removal of optic fibre in upper and lower direction, improves stability.

Description

Optical module

Technical Field

The application relates to the technical field of 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 components in optical communication equipment, and the transmission rate of the optical module is continuously increased along with the development requirement of the optical communication technology.

Along with the miniaturization of devices, all photoelectric devices in the optical module are distributed more closely and occupy small space. The light emitting component and the light receiving component are connected with the outside through optical fibers. Generally, an optical fiber has a long path inside an optical module in order to reduce bending of the optical fiber and reduce signal loss.

SUMMERY OF THE UTILITY MODEL

The application provides an optical module to improve optical module communication stability.

In order to solve the technical problem, the embodiment of the application discloses the following technical scheme:

the embodiment of the application discloses an optical module, includes: a first fiber optic adapter having one end connected to a first optical fiber;

the second optical fiber adapter and the first optical fiber adapter are arranged in the same horizontal plane, and one end of the second optical fiber adapter is connected with a second optical fiber;

a light emitting assembly connected with the first optical fiber;

the light receiving assembly is positioned below the light emitting assembly, one end of the light receiving assembly is connected with the second optical fiber, and the light receiving assembly comprises:

the light receiving bottom plate is used for bearing the light receiving device;

the first side plate bracket is arranged on one side of the light receiving bottom plate;

the second side plate bracket is arranged on the opposite side of the first side plate bracket;

the first side plate bracket and the second side plate bracket are provided with a plurality of buckles, and the adjacent buckles have openings with different directions and are used for fixing optical fibers;

the first optical fiber avoiding part is arranged on one side of the light receiving bottom plate, is arranged close to the first side plate bracket and is used for installing and avoiding the first optical fiber;

and the second optical fiber avoiding part is arranged on the opposite side of the first optical fiber avoiding part and used for installing and avoiding the second optical fiber.

The beneficial effect of this application:

the application discloses optical module includes: and one end of the first optical fiber adapter is connected with the first optical fiber. And the second optical fiber adapter and the first optical fiber adapter are arranged in the same horizontal plane, and one end of the second optical fiber adapter is connected with a second optical fiber. And the light emitting component is connected with the first optical fiber. A light receiving module located below the light emitting module, one end of which is connected to the second optical fiber, comprising: the light receiving bottom plate is used for bearing the light receiving device; the first side plate bracket is arranged on one side of the light receiving bottom plate; the second side plate bracket is arranged on the opposite side of the first side plate bracket; the first side plate bracket and the second side plate bracket are provided with a plurality of buckles, and the adjacent buckles have openings with different orientations and are used for fixing optical fibers; the first optical fiber avoiding part is arranged on one side of the light receiving bottom plate, is arranged close to the first side plate bracket and is used for installing and avoiding the first optical fibers; and the second optical fiber avoiding part is arranged on the opposite side of the first optical fiber avoiding part and used for installing and avoiding the second optical fiber. First optic fibre dodges the portion through first optic fibre and winds to one side of first curb plate support in this application, and the second optic fibre dodges the portion through the second optic fibre and winds to one side of second curb plate support, reduces the angle of buckling of optic fibre. Then optic fibre supports by the opening embedding of buckle inside the buckle, through opening direction's crisscross setting, prevents optic fibre in the removal of upper and lower direction, improves stability.

Drawings

In order to more clearly illustrate the technical solutions of the present disclosure, the drawings required to be used in some embodiments of the present disclosure will be briefly described below, and it is apparent that the drawings in the following description are only drawings of some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art according to these drawings. Furthermore, the drawings in the following description may be regarded as schematic diagrams, and do not limit the actual size of products, the actual flow of methods, the actual timing of signals, and the like, involved in the embodiments of the present disclosure.

FIG. 1 is a connection diagram of an optical communication system according to some embodiments;

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

FIG. 3 is a block 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 schematic illustration of a partial structure of an optical transceiver module according to some embodiments;

fig. 6 is a schematic illustration of a disassembled structure of an optical transceiver module according to some embodiments;

fig. 7 is a schematic structural diagram of a light receiving module according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of a fiber holder according to an embodiment of the present disclosure;

FIG. 9 is a schematic view of another angle structure of an optical fiber holder according to an embodiment of the present disclosure;

fig. 10 is a schematic cross-sectional view of a light receiving device according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a light receiving assembly according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a light emitting module according to an embodiment of the present disclosure;

fig. 13 is a first schematic structural diagram of a light emitting housing according to an embodiment of the present disclosure;

fig. 14 is a schematic structural diagram of a light emitting housing according to an embodiment of the present application;

fig. 15 is a schematic structural view of a light emitting device provided in an embodiment of the present application;

fig. 16 is a schematic cross-sectional view of a light emitting device according to an embodiment of the present application;

FIG. 17 is a schematic view of an optically dense housing according to an embodiment of the present disclosure;

fig. 18 is a schematic view of another angle structure of an optical-sealed case and an optical window according to an embodiment of the present disclosure;

FIG. 19 is a schematic structural diagram of a multiplexing subassembly according to an embodiment of the present disclosure;

FIG. 20 is a schematic view of a multiplexing carrier plate structure according to an embodiment of the present application;

fig. 21 is a schematic structural diagram of a COC optical component according to an embodiment of the present disclosure;

fig. 22 is a schematic structural diagram of a lower housing according to an embodiment of the present application;

fig. 23 is a schematic cross-sectional structure diagram of an optical module according to an embodiment of the present application.

Detailed Description

Technical solutions in some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present disclosure are within the scope of protection of the present disclosure.

Unless the context requires otherwise, throughout the description and the claims, the term "comprise" and its other forms, such as the third person's singular form "comprising" and the present participle form "comprising" are to be interpreted in an open, inclusive sense, i.e. as "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the terms used above are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, "a plurality" means two or more unless otherwise specified.

In describing some embodiments, expressions of "coupled" and "connected," along with their derivatives, may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact with each other. As another example, some embodiments may be described using the term "coupled" to indicate that two or more elements are in direct physical or electrical contact. However, the terms "coupled" or "communicatively coupled" may also mean that two or more elements are not in direct contact with each other, but yet still co-operate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents herein.

"at least one of A, B and C" has the same meaning as "A, B or at least one of C," each including the following combination of A, B and C: a alone, B alone, C alone, a and B in combination, a and C in combination, B and C in combination, and A, B and C in combination.

"A and/or B" includes the following three combinations: a alone, B alone, and a combination of A and B.

The use of "adapted to" or "configured to" herein is meant to be an open and inclusive language that does not exclude devices adapted to or configured to perform additional tasks or steps.

As used herein, "about," "approximately" or "approximately" includes the stated value as well as average values within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art in view of the measurement in question and the error associated with measuring the particular quantity (i.e., the limitations of the measurement system).

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 as to complete information transmission. 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. 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 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 connection diagram of an optical communication system 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 an optical fiber 101 and a 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 plugged into the optical network terminal 100 so that the optical module 200 establishes a bi-directional 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 the optical fiber 101 and the optical network terminal 100 are connected to each other. 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 structural diagram of an optical network terminal according to some embodiments, and fig. 2 only shows a structure of the optical module 100 related to the optical module 200 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 onu 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 the optical module 200 establishes a bidirectional electrical signal connection with the onu 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 block diagram of a light module according to some embodiments, and fig. 4 is an exploded view of a light 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 module.

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 of the present disclosure, the lower housing 202 includes a bottom plate and two lower side plates located at two sides of the bottom plate and disposed 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 an external optical fiber 101 so that the optical fiber 101 is connected to an optical transceiver module inside the optical module 200.

The upper shell 201 and the lower shell 202 are combined to facilitate the installation of devices such as the circuit board 300 and the optical transceiver module into the shell, and the upper shell 201 and the lower shell 202 can form encapsulation 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 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 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, and chips, and the electronic components and the chips are connected together by the circuit traces according to a circuit design to implement functions of power supply, electrical signal transmission, grounding, and the like. The electronic components may include, for example, capacitors, resistors, transistors, Metal-Oxide-Semiconductor Field-Effect transistors (MOSFETs). The chip may include, for example, a Micro Controller Unit (MCU), a limiting amplifier (limiting amplifier), a Clock and Data Recovery (CDR) chip, a power management chip, and a Digital Signal Processing (DSP) chip.

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 rigid circuit board can also be inserted into an electric connector in the cage of the upper computer.

The circuit board 300 further includes a gold finger 301 formed on an end surface thereof, the gold finger 301 being composed of a plurality of pins independent of each other. The circuit board 300 is inserted into the cage 106, and electrically connected to an electrical connector in the cage 106 by gold fingers 301. The gold finger 301 may be disposed on only one side surface (e.g., the upper surface shown in fig. 4) of the circuit board 300, or may be disposed on both upper and lower surfaces of the circuit board 300 to meet the requirement of a large number of pins. The gold finger 301 is configured to establish an electrical connection with the upper computer to implement power supply, grounding, I2C signal transmission, data signal transmission, and the like. Of course, a flexible circuit board is also used in some optical modules. Flexible circuit boards are commonly used in conjunction with rigid circuit boards to supplement the rigid circuit boards.

The optical transceiver module includes an optical transmitter module 410 and an optical receiver module 420. One end of the optical transmission assembly 410 is connected to the first fiber adapter 500 for transmitting the optical signal emitted from the optical transmission assembly 410. One end of the light receiving module 420 is connected to the second optical fiber adapter 600, and is used for receiving external light signals and transmitting the external light signals to the light receiving module 420.

Fig. 5 is a schematic partial structure diagram of an optical transceiver module according to an embodiment of the present application. Fig. 6 shows a schematic diagram of a split structure of an optical transceiver module in an embodiment of the present application. Referring to fig. 4, 5 and 6, in the embodiment of the present application, the optical module is provided with a first circuit board 310 and a second circuit board 320, wherein the first circuit board 310 is disposed above the second circuit board 320, and the first circuit board 310 is electrically connected to the light emitting assembly 410 for transmitting a low-speed signal. The second circuit board 320 is a main circuit board. Therefore, the optical module is provided with a first flexible circuit board 330, one end of which is connected to the light emitting assembly 410 and the other end of which is connected to the first circuit board 310, for transmitting low-speed signals. The second flexible circuit board 340 has one end connected to the light emitting module 410 and the other end connected to the second circuit board 320, for transmitting high-speed signals.

In this application, the high-speed signal includes a modulation signal of the light emitting chip, and the low-speed signal includes a driving signal of the driving chip, a driving signal of the TEC, and the like.

A first heat-conducting plate 430 is disposed between the light-emitting element 410 and the light-receiving element 420, a second heat-conducting plate 440 is disposed between the light-emitting element 410 and the upper casing 201, and a third heat-conducting plate 450 is disposed between the light-receiving element 420 and the lower casing 202. The heat generated by the light emitting element 410 is transferred to the upper housing 201 through the second heat conducting plate 440, and is dissipated by the heat dissipation channel outside the optical module 200. The heat generated by the light receiving element 420 is mainly transferred to the lower case through the third heat conduction plate 450 for heat dissipation.

In the embodiment of the present application, the light emitting module 410 is disposed above the light receiving module 420, and the first fiber adapter 500 and the second fiber adapter 600 are disposed in parallel at the middle portion of the housing in the vertical direction, so that the light emitting module 410 and the first fiber adapter 500 are not at the same level, and the light interface of the light receiving module 420 and the second fiber adapter are not at the same level, if the light emitting module 410 is directly connected to the first fiber adapter 500 by using an optical fiber, or the light interface of the light receiving module 420 is connected to the second fiber adapter, the optical fiber is easily bent, and light damage is generated.

In the embodiments provided in this application, the optical module is equipped with: the optical transceiver module comprises an optical transmitting shell and an optical receiving shell, so that the optical transmitting component 410 and the optical receiving component 420 are physically separated, signal crosstalk is effectively reduced, and communication quality is improved. In the embodiment of the present application, the emission case is disposed above the emission case, and the first heat conduction plate 430 is disposed between the emission case and the light receiving case, and the first heat conduction plate 430 is used for buffering and heat transfer between the emission case and the light receiving case.

The transmitting housing is in contact with the upper housing, which is advantageous for heat dissipation of the light emitting module 410, and the light receiving module 420 is in contact with the lower housing, which is advantageous for heat dissipation of the light receiving module 420.

Fig. 7 is a schematic structural view of a light receiving assembly according to an embodiment of the present application, and fig. 8 is a schematic structural view of an optical fiber fixing frame according to an embodiment of the present application. Fig. 9 is a schematic view of another angle structure of an optical fiber fixing frame according to an embodiment of the present disclosure. Fig. 10 is a schematic cross-sectional view of a light receiving device according to an embodiment of the present disclosure.

To fix the first and second optical fibers 510 and 610, the light receiving assembly 420 includes a fiber holder 423, a light receiving cover 421, and a light receiving device 422, wherein the fiber holder 423 and the light receiving cover 421 form a light receiving housing. The fiber fixing mount 423 includes: the light receiving base plate 4231, and a first side plate support 4232 and a second side plate support 4233 which are arranged on two sides of the light receiving base plate, wherein the first side plate support 4232 is arranged on the opposite side of the second side plate support 4233.

The outer side of the first side plate bracket 4232 is provided with a plurality of buckles for fixing the optical fiber. Specifically, as shown in the figure, the outside of first curb plate support 4232 is equipped with 3 buckles, includes: first buckle 42321, second buckle 42322 and third buckle 42323, the opening of adjacent buckles faces oppositely, like the opening of first buckle 42321 faces upwards, the opening of second buckle 42322 faces downwards, and the opening of third buckle 42323 faces upwards in this application. When fixed optic fibre, with optic fibre by the opening embedding of buckle, support and lean on inside the buckle, through the crisscross setting of opening direction, prevent optic fibre in the removal of upper and lower direction, improve stability.

First buckle 42321 includes connecting portion and joint portion, the one end and the first curb plate leg joint of connecting portion, and the setting of the first support curb plate of perpendicular to. One end of the clamping portion is vertically connected with the other end of the connecting portion. After the optical fiber is embedded into the first buckle, the optical fiber is contacted with the connecting part of the first buckle. The other buckling structures are the same as the first buckling structure.

Optionally, the opening is towards the buckle of top and is regarded as first buckle group, and opening direction below is regarded as the second buckle group, and the buckle in the buckle group and the buckle in the second buckle group are adjacent to each other to be set up, and the buckle quantity in the first buckle group is 1, 2 or more, and specific quantity can set up as required.

The outside of second curb plate support 4233 is equipped with 3 buckles, includes: in the fourth buckle 42331, the fifth buckle 42332 and the sixth buckle 42333, the openings of the adjacent buckles face oppositely, for example, the opening of the fourth buckle 42331 faces upwards, the opening of the fifth buckle 42332 faces downwards, and the opening of the sixth buckle 42333 faces upwards. When fixed optic fibre, with optic fibre by the opening embedding of buckle, support and lean on inside the buckle, through the crisscross setting of opening direction, prevent optic fibre in the removal of upper and lower direction, improve stability.

One end of the light receiving substrate 4231 is provided with an interface escape 4234 for installing the second optical fiber connector 611. The interface escape portion 4234 is provided with a first protrusion 4235 and a second protrusion 4236 on both sides thereof, protruding upward with respect to the light receiving substrate 4231, and one end of the second optical fiber connector 611 is connected to the second optical fiber 610 and the other end thereof is connected to the optical demultiplexer. The second optical fiber connector 611 is provided at an interface avoiding portion 4234 between the first snap boss 4235 and the second snap boss 4236, and the second optical fiber connector 611 is connected to the optical demultiplexer by an optical adhesive.

Because the second optical fiber connector 611 is made of a brittle material, the second optical fiber connector 611 is easily damaged when being stressed, and the upper surfaces of the first clamping protrusion 4235 and the second clamping protrusion 4236 are higher than the upper surface of the second optical fiber connector 611, so that the second optical fiber connector 611 is effectively prevented from being touched by an object above the second optical fiber connector 611 in the operation process. The second optical fiber connector 611 is disposed at the interface avoiding portion 4234 between the first snap boss 4235 and the second snap boss 4236, so that the collision of the object in the left-right direction on the second optical fiber connector 611 can be effectively avoided.

Fig. 11 is a schematic structural diagram of a light receiving assembly according to an embodiment of the present application. Fig. 11 shows an installation schematic of a second optical fiber in an optical mount. In the embodiment of the present application, one end of the second optical fiber 600 is connected to the first optical fiber adapter 500, and the other end of the second optical fiber is fixed by the gap between the second protrusion 4236 and the light receiving cover 421, the fourth latch 42331, the fifth latch 42332, and the sixth latch 42333, and then is wound around the third latch 42323, the second latch 42322, and the first latch 42321, and then is wound around the left side of the first protrusion 4235 to be connected to the second optical fiber connector 611. The second optical fiber 610 is fixed, meanwhile, the second optical fiber 610 is connected with the second optical fiber connector 611 after being wound around the light receiving shell for a circle, the optical fiber bending caused by the difference value between the upper and lower directions and the left and right directions of the second optical fiber adapter 600 and the second optical fiber connector 611 is relieved, the loss is reduced, and the communication quality is improved.

In order to fix the optical fiber fixing bracket 423 and the light receiving cover 421, a first connecting portion 42321 is disposed on an upper surface of the first side plate support 4232 and protrudes from an upper surface of the first side plate support 4232. The bottom surface of the light receiving cover 421 is in contact with the upper surface of the first side plate support 4232, the side surface of the light receiving cover 421 is connected with the side surface of the first connection portion 42321, and the first connection portion 42324 has a limiting effect on the light receiving cover 421. The second connecting portion 42331 is disposed on the upper surface of the second side plate support 4233 and protrudes from the upper surface of the second side plate support 4233. The bottom surface of the light receiving cover 421 is in contact with the upper surface of the second side plate support 4233, the side surface of the light receiving cover 421 is connected with the side surface of the second connecting portion 42331, and the second connecting portion 42334 has a limiting effect on the light receiving cover 421. The light receiving cover 421 is disposed between the first connecting portion 42324 and the second connecting portion 42334, and the lower surface of the light receiving cover 421 is connected with the upper surface and the lower surface of the first side plate support 4232 through solid glue, so that the light receiving cover 421 and the light emitting housing 412 are fixed in the vertical direction; meanwhile, two side surfaces of the light receiving cover 421 are respectively connected to a side surface of the first connection portion 42324 and a side surface of the second connection portion 42334, so that the light receiving cover 421 and the light emitting housing 412 are fixed in the width direction.

The first side plate support 4232 further has a first limiting portion 42325 protruding from an upper surface of the first side plate support 4232, and a first cover opening is disposed between the first side plate support and the first connecting portion 42324. The lower surface of the light receiving cover 421 is provided with a cover protrusion, one end of the cover protrusion is embedded into the first cover opening and the second cover opening, one side of the cover protrusion is connected to the first limiting portion 42325, and the other side of the cover protrusion is connected to the first connecting portion 42324, so that the light receiving cover 421 is fixed in the length direction of the optical module.

The second side plate support 4233 is further provided with a second limiting portion 42335 protruding from the upper surface of the second side plate support 4233, and a second cover plate opening is arranged between the second side plate support 4233 and the second connecting portion 42334. The other end of the cover plate protruding portion is embedded into the first cover plate opening and the second cover plate opening, one side of the cover plate protruding portion is connected with the second limiting portion 42335, and the other side of the cover plate protruding portion is connected with the second connecting portion 42334, so that the light receiving cover plate 421 is fixed in the length direction of the optical module.

Further, for facilitating winding and installation of optical fibers, two sides of the end portion of the light receiving base plate 4231 are provided with optical fiber avoiding portions, including a first optical fiber avoiding portion 42326 and a second optical fiber avoiding portion 42336, wherein the first optical fiber avoiding portion 42326 is located on the outer side of the first clamping protrusion 4235 and is close to the first optical fiber adapter 500, and the second optical fiber avoiding portion 42336 is located on the outer side of the second clamping protrusion 4236 and is close to the second optical fiber adapter 600. When the second optical fiber is wound to the fourth buckle 42331 through the second optical fiber adapter and the second buckle 4236, a certain height difference exists, and the optical fiber is prevented from being bent greatly through the buffering of the first optical fiber avoiding part 42326, so that the loss is reduced. Similarly, the second optical fiber avoiding portion 42336 can also be used for avoiding the optical fiber, so that the loss is reduced.

In order to facilitate mounting of the light receiving device with continued reference to fig. 7 to 11, in the embodiment of the present application, the upper surface of the light receiving substrate 4231 is provided with a receiving groove 42311, and the upper surface of the receiving groove 42311 is lower than the upper surface of the light receiving substrate 4231 for carrying a light receiving device such as a photodetector, an amplifier, or the like. A receiving substrate 4222 is arranged above the receiving groove 42311 and is used for carrying an electric detector and an amplifier. The light receiving device includes: the optical demultiplexer 4221 has an input end connected to the second optical fiber connector 611, and is configured to receive the external signal light. The receiving photoelectric detector is arranged at the position of the receiving groove 42311 and located below the optical multiplexer, so that external signal light can be conveniently detected, and an optical signal is converted into an electric signal. The amplifier is arranged at the position of the receiving groove 42311, receives the electric signal output by the photoelectric detector, amplifies the electric signal and outputs the amplified electric signal. The signal lines of the receiving substrate 4222 are connected with the lower surface of the third flexible circuit board 350 based on the height difference between the receiving groove 42311 and the light receiving bottom plate 4231.

One side of the receiving groove 42311 is a multiplexing receiving backplane, and the other side is a flexible board backplane. The third flexible circuit board extends into the receiving shell through the upper part of the flexible board bottom board and is electrically connected with the receiving substrate. In order to facilitate the positioning of the flexible circuit board, the flexible board bottom plate is provided with a flexible board limiting part.

The inner wall of the first side plate support 4232 is provided with a substrate side groove 42327 for increasing space during installation and avoiding collision between a clamping tool and the first side plate support. The inner wall of the second side plate support 4233 is provided with a base plate side opening 42337 for increasing a space during installation and avoiding collision of a clamping tool with the second side plate support. Meanwhile, the provision of the substrate-side opening 42337 and the substrate-side groove 42327 can facilitate observation of the heights of the photodetector and the optical demultiplexer during mounting.

In this embodiment, one end of the first optical fiber adapter is connected to the first optical fiber, and the first optical fiber 510 firstly passes through the second optical fiber avoiding portion 42336, then passes through the first buckle 42321, the second buckle 42322 and the third buckle 42323 in sequence, winds to one side of the emission opening 414, extends into the interior of the light emission shell from the emission opening 414, and is connected to the first optical fiber connector, so that bending of the optical fiber caused by the position difference between the first optical fiber adapter 500 and the first optical fiber connector in the height and width directions is avoided, and optical loss is reduced.

Fig. 12 is a schematic structural diagram of a light emitting module according to an embodiment of the present disclosure. As shown in fig. 12, the light emitting assembly 410 includes a light emitting housing 412, a light emitting cover 411, and a light emitting device 413. Wherein the light emitting housing 412 and the light emitting cover 411 are covered to form a light emitting housing having an opening at one side. The light emitting cover 411 covers the light emitting housing 412 and covers the light emitting housing to form a structure with an opening at one side. For convenience of description, the opening of the light emitting housing is referred to as an emission opening 414 in the embodiment of the present application for connection with an external circuit board through a flexible circuit board.

Fig. 13 is a first schematic structural diagram of a light emitting housing according to an embodiment of the present disclosure; fig. 14 is a schematic structural diagram of a light emitting housing according to an embodiment of the present application. Fig. 13 and 14 show the light-emitting housing from different angles. As shown in fig. 12, 13 and 14, in the embodiment of the present application, the light emitting cover 411 is used to carry a light emitting device, which includes an optical density sub-assembly and a multiplexing sub-assembly. The light emitting housing 412 includes: an emission bottom plate 4121, and first and second

emission side plates

4122 and 4123 disposed at both sides of the emission bottom plate 4121, wherein the first emission side plate 4122 is disposed at an opposite side of the second emission side plate 4123. The opposite side of the emitting opening 414 is further provided with a light opening baffle 4124 and an avoiding side plate 4125, wherein the avoiding side plate 4125 is arranged between the light opening baffle 4124 and the emitting bottom plate 4121, an included angle between the avoiding side plate 4125 and the emitting bottom plate 4121 is an obtuse angle, and the light opening baffle 4124 is arranged perpendicular to the light emitting bottom plate 4121.

The first optical fiber and the second optical fiber are disposed in a space between the avoidance side plate 4125 and the light receiving unit.

And an avoidance part formed on the outer side of the light emitting shell is used for mounting and avoiding the first optical fiber 510 and the second optical fiber 610. In the embodiment of the present application, in order to avoid bending the first optical fiber 510 and the second optical fiber and reduce optical loss, the first optical fiber 510 winds around the light receiving housing for a half turn, and extends into the light emitting housing from the emitting opening 414 to connect with the light receiving module 420. The second optical fiber is connected to the light receiving module 420 at the light port after being wound around the light receiving housing.

Fig. 15 is a schematic structural diagram of a light emitting device according to an embodiment of the present application. Fig. 16 is a schematic cross-sectional view of a light emitting device according to an embodiment of the present application.

In some embodiments of the present application, to facilitate installation and maintenance of the light emitting device, the optical sealing assembly in the optical module includes an optical sealing housing 4131 and an optical sealing cover 4132, the optical sealing housing is carried on one side of the light emitting cover 411 to form a sealing structure, and the COC optical assembly 4133 and the first lens group are disposed therein. The light-tight casing is a frame structure with two side edges, the upper surface of the light-tight casing 4131 is connected with the emission cover plate 411, and the emission cover plate 411 is connected with the COC optical assembly.

Fig. 17 is a schematic structural diagram of an optical density case according to an embodiment of the present application. Fig. 18 is a schematic view of another angle structure of an optical density case and an optical window according to an embodiment of the present disclosure. The optically tight housing 4131 as shown in the figures is provided with a first optically tight opening 41311 for the mounting of internal devices. A second light-tight opening 41322 is disposed opposite the first light-tight opening 41311 and is coupled to the second light-tight opening 41312 via a light-tight cover to effect a seal at the second light-tight opening 41312. An optical window opening 41313 is disposed adjacent to the first optical density opening 41311, and an optical window holder 41314 is disposed on the optical density housing 4131 and is disposed at one side of the optical window opening 41313 for holding an optical window. The opposite side of the optical window opening 41313 is provided with a switching interface, and the ceramic switching block 4134 is arranged at the switching interface. One end of the ceramic adapter block 4134 is embedded inside the optical hermetic case 4131 through the adapter port, and electrically connected to the COC optical component 4133. One end of the ceramic switching block 4134 is arranged outside the optical sealed shell, the upper surface of the ceramic switching block is connected with the first flexible circuit board, and the lower surface of the ceramic switching block is connected with the second flexible circuit board; the lower surface of the other end of the ceramic adapter block 4134 is provided with pins for wire bonding with the COC optical component 4133.

To realize the installation of the optical window, the optical window platform 41314 includes an optical window bottom plate 41315, and a first optical window side plate 41316 and a second optical window side plate 41317 vertically disposed at two sides of the optical window bottom plate 41315, wherein an upper surface of the optical window is in contact connection with a lower surface of the optical window bottom plate 41315, and two side surfaces of the optical window are in contact connection with the first optical window side plate 41316 and the second optical window side plate 41317. To avoid the effect of the adhesive on the optical path, the optical window and the optical window carrier 41314 may be connected by optical glue.

The other end of the ceramic adaptor block 4134 is provided with a connecting portion, the upper surface of the connecting portion is provided with a first connecting region connected to the first flexible circuit board 330, and the lower surface of the connecting portion is provided with a second connecting region connected to the second flexible circuit board 340

In the present application, the COC optical module 4133 and the ceramic adaptor block 4134 are both connected to the light emitting cover 411, the light emitting cover 411 is also connected to the upper housing, and the heat generated by the light emitting module 410 can be transferred to the upper housing through the light emitting cover 411, and the heat is efficiently dissipated through the upper channel of the optical module. The COC optical component 4133 and the ceramic adapting block 4134 are connected by wire bonding, receive the electrical signals of the first flexible circuit board 330 and the second flexible circuit board 340, convert the electrical signals into emission signal light, and transmit the emission signal light to the outside of the optical sealed housing 4131 through the optical window.

The light-tight cover plate 4132 is provided with a light-tight connection portion 41321, a central region of the light-tight cover plate 4132 is provided to protrude from the light-tight connection portion 41321, and the light-tight connection portion 41321 is in contact connection with the lower surface of the light-tight housing 4131 to seal the second light-tight opening 41312 of the light-tight housing 4131.

In the embodiment of the present application, the light-tight housing 4131 and the light-emitting cover 411 may be connected by a solid glue, and the light-emitting cover 411 seals the upper surface of the light-tight housing 4131. An optical window holder 41314 is provided on the left side of the optical sealed case 4131, and an optical window is provided below the optical sealed case 4131 to be connected to the optical window opening 41313, thereby sealing the left side of the optical sealed case 4131. The upper surface of the ceramic adapter block 4134 is connected to the light emitting cover 411 and the lower surface is connected to the hermetic case 4131 to seal the adapter port on the right side of the hermetic case 4131. The COC optical assembly 4133 and the first lens group are arranged inside the optical seal shell 4131, sealing of the COC optical assembly 4133 is achieved, influence of the external environment on light emission signals is reduced, and communication quality is improved. In the embodiment of the present application, the first lens group 41331 is disposed on the COC optical element 4133.

In the embodiment of the present application, the light-tight housing 4131, the COC optical element 4133, the first lens group 41331, and the optical window 4135 are first mounted, then the ceramic adaptor block 4134 may be connected, and finally the light-tight cover plate 4132 is mounted.

FIG. 19 is a schematic structural diagram of a multiplexing subassembly according to an embodiment of the present disclosure; fig. 20 is a schematic structural diagram of a multiplexing carrier plate according to an embodiment of the present application.

The light emitting device is further provided with a multiplexing subassembly comprising: a multiplexing carrier plate 4136, and an optical multiplexer 4139, an optical isolator 4138, a second lens group 4137 disposed on the multiplexing carrier plate 4136. In order to realize the unification of the optical axis of the optoelectronic device, in the embodiment of the present application, the lower surface of the multiplexing carrier plate 4136 is provided with an isolation groove 41361 for carrying the optical isolator 4138, and one side of the isolation groove 41361 is a lens carrier 41362 for carrying the second lens group 4137. The other side of the isolation groove 41361 is a multiplexing bearing platform 41363 for bearing an optical multiplexer 4139. To avoid the optical multiplexer 4139, a first multiplexing avoiding groove 41364 is provided on the other side of the multiplexing platform 41363, and a first multiplexing clamping plate 41365 is provided on the other side of the first multiplexing avoiding groove 41364. The lower surface of the first multiplexing clamping plate 41365 is lower than the lower surface of the multiplexing bearing platform 41363, and is used for limiting the optical multiplexer 4139 in the length direction of the optical module. The multiplexing bearing plate 4136 is further provided with a second multiplexing avoidance groove 41366 located adjacent to the first multiplexing avoidance groove 41364. The second multiplexing card 41367 is arranged on the side adjacent to the first multiplexing card 41365, and the second multiplexing avoiding groove 41366 is arranged between the multiplexing bearing platform 41363 and the second multiplexing card 41367 and used for avoiding and installing the optical multiplexer 4139. The second multiplexing card plate 41367 is used for limiting the optical multiplexer 4139 in the width direction of the optical module. In the application, one side of the optical multiplexer 4139 is abutted against the first multiplexing clamping plate 41365, the other side of the optical multiplexer 4139 is abutted against the second multiplexing clamping plate 41367, and the upper surface of the optical multiplexer 4139 is connected with the multiplexing bearing table 41363 to realize the positioning and installation of the optical multiplexer 4139.

A multiplexing avoidance opening 41369 is formed between the second multiplexing clamping plate 41367 and the first multiplexing clamping plate 41365, so that the optical multiplexer 4139 can be conveniently installed, and the optical multiplexer 4139 can be conveniently connected with the multiplexing bearing platform 41363.

The outer surface of the optical multiplexer 4139 is generally chamfered rather than square, and the first multiplexing avoidance groove 41364 and the second multiplexing avoidance groove 41366 facilitate installation of the optical multiplexer 4139 and connection of the optical multiplexer 4139 to the multiplexing platform 41363.

In the embodiment of the present application, the multiplexing carrier plate 4136 is provided with an optical connection notch 41368, which is disposed near the second emission side plate 4123, and is used for avoiding installation of the second optical fiber connector. The output end of the optical multiplexer 4139 faces the emission opening 414, and is connected to the first optical fiber connector. The first fiber optic connector is also connected to a first optical fiber 510 and passes through the first optical fiber 510 to the first fiber optic adapter 500. In the present application, the first optical fiber 510 outputs light to the light emitting housing through the emitting opening 414, winds around the outside of the light emitting housing to the outside of the first emitting side plate 4122, is fixed by the third latch 42323, the second latch 42322 and the first latch 42321, and then winds around the second optical fiber avoiding portion 42336 to be connected to the first optical fiber adapter 500. In the optical module provided by the embodiment of the application, the light emitting cover plate 411 is used for bearing a light emitting device, when the optical module is installed, the multiplexing sub-assembly is installed below the light emitting cover plate 411, the optical seal housing 4131 in the optical seal sub-assembly is connected with the COC optical assembly 4133, the first lens group, the ceramic switching block 4134 and the light emitting cover plate 411, and the optical seal cover plate 4132 is connected with the optical seal housing 4131 after the optical axis position is adjusted. Then, a light emitting cover 411 is coupled to the light emitting housing to form the light emitting assembly 410. The light emitting module 410 formed by connecting the light emitting housing and the light emitting cover 411 is provided with an emitting opening 414 at the electrical port end for leading out the first flexible circuit board 330, the second flexible circuit board 340 and the first optical fiber 510.

As shown in fig. 4, the second circuit board 320 receives the electrical signal of the upper computer, and divides the electrical signal into a high-speed electrical signal and a low-speed electrical signal, the high-speed electrical signal is connected to the ceramic switching block 4134 through the second circuit board 320 and the second flexible circuit board 340, and is connected to the COC optical component 4133 through the switching function of the ceramic switching block 4134, so as to modulate the optical signal; the second circuit board 320, the first circuit board 310, the first flexible circuit board 330 and the ceramic switching block 4134 are connected by the low-speed electrical signal, and the driving of the optical chip, the driving of the ETC, and the like are realized through the switching action of the ceramic switching block 4134 and the COC optical component 4133, and meanwhile, the signal of the thermistor is received and transmitted to the first circuit board 310.

The COC optical component 4133 receives the electrical signal, converts the electrical signal into a multiple optical signal, converts the multiple optical signal into a collimated optical signal through the first lens component, enters the second lens group 4137 through the optical window, converges the optical signal through the second lens group 4137, enters the optical multiplexer 4139 through the optical isolator 4138, multiplexes multiple signal light through the optical multiplexer 4139, generates a multiplexed optical signal, and transmits the multiplexed optical signal to the first optical fiber adapter 500 through the first optical fiber connector and the first optical fiber 510.

In the embodiment of the present application, in order to fix the light emitting module 410, a first limiting protrusion 41321 and a second limiting protrusion 41322 are disposed on an outer side of the first emission side plate 4122, wherein the first limiting protrusion 41321 and the second limiting protrusion 41322 protrude toward an outer side of the light emission housing, the first limiting protrusion 41321 is disposed perpendicular to the second limiting protrusion 41322, the first limiting protrusion 41321 is disposed parallel to the light port blocking plate 4124, and the second limiting protrusion 41322 is disposed at the light port blocking plate 4124.

Fig. 21 is a schematic structural diagram of a COC optical assembly according to an embodiment of the present application. In the embodiment of the present application, the COC optical assembly 4133 includes: a first metallized ceramic substrate 41332, the upper surface of which is attached to the light emitting cover plate 411, and the lower surface of which is provided with a TEC 41333. The lower surface of the TEC41333 is attached to a second metallized ceramic substrate 41334, the lower surface of the second metallized ceramic substrate 41334 carrying the first lens group 41331, the thermistor, and the sets of COC structures 41335. The thermosensitive substrate is arranged between the lower surface of the second metallized ceramic substrate and the thermistor 41336 and is connected with the ceramic adapter plate through routing.

The COC structure includes: a laser chip and a plurality of conducting strips are arranged on the first substrate; the optical chip is electrically connected with the first substrate through the conducting strip. Photoelectric devices such as optical chips and monitoring photodetectors and a plurality of conducting strips 13 are arranged on the surface of the first substrate. The conducting plate is electrically connected with the pin of the ceramic switching block 4134, and the optical chip and the monitoring photoelectric detector are connected with the corresponding conducting plate through routing. The optical chip can emit two beams of light during working, one beam of light is emitted to the first lens group and collimated by the lens to complete coupling, and the other beam of light is emitted to the monitoring photoelectric detector to realize the optical power monitoring function.

The first lens group 41331 is disposed on a light-emitting path of the front light-emitting port of the optical chip. The light emitted by the light outlet in front of the optical chip is divergent light, and the first lens group converges the light emitted by the light outlet in front of the optical chip into parallel light. The monitoring photoelectric detector is arranged on a light emitting path of the light outlet behind the optical chip and is used for monitoring light emitted by the optical chip.

In some embodiments, a TEC (semiconductor Cooler) is used to control the photo chip and monitor the temperature of the photo detector. Further, in order to realize temperature control of the light emitting device, a thermistor 41336 is provided on the thermosensitive substrate, electrically connected to the second circuit board 320 through the thermosensitive substrate and the ceramic transition block 4134. The circuit board controls the working state of the TEC according to the temperature information acquired by the thermistor, and realizes the temperature control of the optical chip and the monitoring photoelectric detector.

With continued reference to fig. 13 and 14, the first emitting side plate 4122 is provided at an outer side thereof with a first restricting protrusion 41221 and a second restricting protrusion 41222, wherein the first restricting protrusion 41221 and the second restricting protrusion 41222 are protruded toward the outer side of the light emitting housing, and the first restricting protrusion 41221 is vertically disposed with the second restricting protrusion 41222, the first restricting protrusion 41221 is disposed parallel to the light opening blocking plate 4124, and the second restricting protrusion 41222 is disposed vertically to the light opening blocking plate 4124.

The first restricting protrusion 41221 and the second restricting protrusion 41222 may be in contact with each other or may not be adjacent to each other as shown in the drawings, and a certain distance is provided between the first restricting protrusion 41221 and the second restricting protrusion 41222.

The outer side of the second emission side plate 4123 is provided with a third limiting protrusion 41331 and a fourth limiting protrusion 41332, wherein the third limiting protrusion 41331 and the fourth limiting protrusion 41332 are protruded toward the outer side of the light emission housing, the third limiting protrusion 41331 is perpendicularly provided to the fourth limiting protrusion 41332, the third limiting protrusion 41331 is provided in parallel to the light opening blocking plate 4124, and the fourth limiting protrusion 41332 is perpendicularly provided to the light opening blocking plate 4124.

Fig. 22 is a schematic structural diagram of a lower housing according to an embodiment of the present application, and fig. 23 is a schematic structural diagram of a cross section of an optical module according to an embodiment of the present application. As shown in fig. 22 and 23, the lower case 202 includes a bottom plate 2021, and a first lower side plate 2022 and a second lower side plate 20232023 which are located on both sides of the bottom plate 2021 and are disposed perpendicular to the bottom plate. The inner wall of the first lower side plate 2022 is provided with a first limit groove 20221, which is concave relative to the inner wall of the lower side plate and matches with the first limit protrusion 41321. When the optical transceiver module is mounted, the first limiting protrusion 41321 is embedded in the first limiting groove 20221, and the first limiting groove 20221 limits the optical transmitter module 410 in the length direction of the optical module. The inner wall of the first lower side plate 2022 is further provided with a second limiting groove 20222, the first limiting groove 20221 penetrates the height direction of the first lower side plate 2022, the second limiting groove 20222 is provided with a first bearing column, the upper surface of the first bearing column is connected with the second limiting protrusion 41322 for bearing the second limiting protrusion 41322, and the light emitting assembly 410 is limited in the width direction of the optical module.

The inner wall of the second lower side plate 2023 is provided with a third limit groove 20231, which is concave relative to the inner wall of the lower side plate and matches with the third limit protrusion 41331. When the optical module is mounted, the third limiting protrusion 41331 is embedded in the third limiting groove 20231, and the third limiting groove 20231 limits the optical emitting assembly 410 in the length direction of the optical module. A fourth limiting groove 20223 is further disposed on the inner wall of the second lower side plate 2023, the third limiting groove 20231 penetrates the height direction of the first lower side plate 2022, a second bearing column is disposed below the fourth limiting groove 20223, and the upper surface of the second bearing column is connected to the fourth limiting protrusion 41332 for bearing the fourth limiting protrusion 41332, so as to limit the light emitting module 410 in the width direction of the optical module.

In the embodiment of the present application, the first lower side plate 2022 protrudes from the inner wall toward the inside of the optical module case. The second support column is disposed on an inner wall of the second lower side plate 2023 and protrudes into the optical module housing. In some embodiments of the present application, the first and third limiting

protrusions

41321 and 41331 may be symmetrically or asymmetrically disposed. The first restricting projection 41321 is provided near the light port shutter 4124, and may be provided so that the second restricting projection 41322 is provided near the light port shutter 4124 and the first restricting projection 41321 is provided near the emission opening 414.

In the embodiment of the present application, the light receiving member 420 is disposed below the light emitting member 410, and a third heat conductive plate is disposed between the lower bottom surface of the light receiving member 420 and the lower case. In the embodiment of the present application, the third heat conducting plate is a rectangular parallelepiped structure and is located below the receiving bottom plate, and the projections of the first fiber avoiding portion 42326 and the second fiber avoiding portion 42336 on the bottom plate of the lower housing do not cover the receiving bottom plate.

To connect the light receiving module 420 to the lower housing 202, a first base plate bump 20211 and a second base plate bump 20212 are disposed on the base plate 2021 and protrude toward the inside of the housing with respect to the upper surface of the base plate. The third heat conducting plate is disposed between the first bottom plate protrusion 20211 and the second bottom plate protrusion 20212. In order to provide a uniform mounting platform for the optoelectronic devices in the light receiving module, the upper surface of the third heat conducting plate is located in the same plane as the upper surfaces of the first base plate protrusions 20211 and the second base plate protrusions 20212. The light receiving base plate 4231 is disposed above the first base plate protrusion 20211 and the second base plate protrusion 20212.

The first bottom plate protrusion 20211 may be configured such that one end is connected to the first lower side plate 2022 and the other end is connected to the second lower side plate 2023; a certain interval from the first lower side plate 2022 may also be provided. The second chassis projection 20212 is provided in the same manner as the first chassis projection 20211 in the width direction of the optical module.

In the embodiment of the present application, the right side surface of the first bottom plate protrusion 20211 is perpendicular to the first lower side plate 2022, and the left side surface of the second bottom plate protrusion 20212 is perpendicular to the first lower case. Further, the first bottom plate protrusion 20211 is vertically disposed between the first lower side plate 2022 and the second lower side plate 2023, and the second bottom plate protrusion 20212 is vertically disposed between the first lower side plate 2022 and the second lower side plate 2023.

In some embodiments of the present application, the light receiving base plate 4231 is further provided with a third base plate protrusion 20213, a first lateral surface of the third base plate protrusion 20213 abuts against a lateral wall of the first fiber escape portion 42326, and an adjacent side of the first lateral surface abuts against the first snap projection 4235, so as to prevent the light receiving base plate 4231 from moving towards the light port. The surface of the second base plate protrusion 20212 is provided with a first blocking arm 20214 and a second blocking arm 20215 for preventing the light receiving base plate 4231 from moving toward the electric port. In the present embodiment, the first stopper arm 20214 is disposed adjacent to the first lower side plate 2022, and the second stopper arm 20215 is disposed adjacent to the second lower side plate 2023.

A first buckle avoiding portion is arranged between the first baffle arm 20214 and the first lower side plate 2022 and used for installation and avoidance of the buckle on the first side plate support, and a second buckle avoiding portion is arranged between the second baffle arm 20215 and the second lower side plate 2023 and used for installation and avoidance of the buckle on the second side plate support.

Specifically, the first blocking arm 20214 and the second blocking arm 20215 are disposed in an L shape, and the corner faces the light receiving base plate 4231. As shown in the figures, the first catch arm 20214 includes: the first sub-blocking arm and the second sub-blocking arm are arranged, wherein the first sub-blocking arm is perpendicular to the second sub-blocking arm, and a first buckle avoiding portion 20215 is arranged between the first sub-blocking arm and the first lower side plate 2022, so that the buckle can be installed and avoided on the first side plate support. The second stopper arm 20215 includes: the third sub-blocking arm is perpendicular to the fourth sub-blocking arm, and a buckle avoiding portion is arranged between the third sub-blocking arm and the second lower side plate 2023 and used for installation and avoidance of a buckle on the second side plate support.

The tail of the light receiving bottom plate 4231 abuts against the left sides of the second sub-blocking arm and the fourth sub-blocking arm, so that the movement of the light receiving bottom plate 4231 towards the electric port direction is limited; in combination with the limit function of the third base plate protrusion 20213, the position of the light receiving base plate 4231 in the length direction of the optical module is limited. The light receiving bottom plate 4231 is further disposed between the first sub-blocking arm and the third sub-blocking arm, so that the light receiving bottom plate 4231 is prevented from moving in the width direction of the optical module.

In the embodiment of the present application, to facilitate the winding of the second optical fiber, the distance from the second lower side plate 2023 to the second optical fiber connector is smaller than the distance from the first lower side plate 2022 to the second optical fiber connector.

For the realization fixed to the optical fiber adapter, this application still is equipped with adaptation cardboard 700, but sets up first adaptation breach second adaptation breach. The opening of the first adapting notch and the second adapting notch are arranged towards the upper shell, the first adapting notch is used for bearing the first optical fiber adapter 500, and the second adapting notch is used for bearing the second optical fiber adapter 600.

The casing head sets up cardboard mounting groove 2018 down, inside adaptation cardboard 700 embedding cardboard mounting groove 2018, the cardboard mounting groove carries on spacingly to the adaptation cardboard. One side of the card board mounting groove is a first card board limiting part 20216, and the other side is a second card board limiting part 20217. The upper surfaces of the first card board limiting portion 20216 and the second card board limiting portion 20217 are both provided with an installation avoiding portion for installation and avoidance of the optical fiber adapter.

In the embodiment of the present application, the first fiber optic adapter 500 is provided with a first fiber ring protruding from the surface of the first fiber optic adapter 500. The right side of first optic fibre ring supports and leans on in the spacing portion of first cardboard, and the left side supports and leans on the right side in the adaptation cardboard. The second fiber optic adapter 600 is provided with a second fiber ring protruding from the surface of the second fiber optic adapter 600. The right side of second optic fibre ring supports and leans on in the spacing portion of first cardboard, and the left side supports and leans on the right side in the adaptation cardboard. The left side of adaptation cardboard is connected with the spacing portion of second cardboard.

In the embodiment of the present application, in the optical module assembly process, the light receiving module 420 and the light emitting module 410 are first mounted, then the light receiving module 420 is fixed inside the lower housing, and then the light emitting module 410 is disposed above the light receiving module 420, and the flexible circuit board is electrically connected to the first circuit board 310 and the second circuit board 320. And finally, covering the upper shell and the lower shell.

As described above, taking the upper surface of the circuit board as an example, the connection direction between the optical port 205 and the electrical port is the longitudinal direction of the optical module, the vertical direction is the width direction of the optical module, and the vertical direction is the height direction of the optical module.

For convenience of description, the following description of the direction is based on the direction of fig. 3, the upper housing is located in the upper direction, the lower housing is located in the lower direction, the optical port is located on the left side of the electrical port, and the electrical port is located on the right side, unless otherwise specified.

Since the above embodiments are all described by referring to and combining with other embodiments, the same portions are provided between different embodiments, and the same and similar portions between the various embodiments in this specification may be referred to each other. And will not be described in detail herein.

It is noted that, in this specification, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a circuit structure, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such circuit structure, article, or apparatus. Without further limitation, the presence of an element identified by the phrase "comprising an … …" does not exclude the presence of other like elements in a circuit structure, article or device comprising the element.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present disclosure. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

The above-described embodiments of the present application do not limit the scope of the present application.

Claims

1. A light module, comprising: a first optical fiber adapter, one end of which is connected with the first optical fiber;

a light emitting assembly connected to the first optical fiber;

a light receiving module located below the light emitting module, one end of which is connected to the second optical fiber, comprising:

the first side plate bracket and the second side plate bracket are provided with a plurality of buckles, and the adjacent buckles have openings with different orientations and are used for fixing the first optical fiber and the second optical fiber;

the first optical fiber avoiding part is arranged on one side of the light receiving bottom plate, is arranged close to the first side plate bracket and is used for installing and avoiding the first optical fibers;

2. The optical module of claim 1, further comprising: and the light receiving cover plate is arranged above the first side plate bracket and the second side plate bracket.

3. The optical module according to claim 2, wherein the first side plate bracket is provided with a first connecting part protruding from an upper surface of the first side plate bracket;

the second side plate support is provided with a second connecting part protruding out of the upper surface of the second side plate support;

the light receiving cover plate is arranged between the first connecting portion and the second connecting portion.

4. The optical module according to claim 1, wherein one end of the light receiving substrate is provided with a first protrusion and a second protrusion;

the first clamping bulges and the second clamping bulges protrude out of the light receiving bottom plate;

an interface avoiding part is arranged between the first clamping protrusion and the second clamping protrusion and used for arranging a second optical fiber interface, and one end of the second optical fiber connector is connected with the second optical fiber.

5. The optical module as claimed in claim 4, wherein the light receiving substrate is provided with a receiving recess having an upper surface lower than an upper surface of the light receiving substrate for carrying a receiving photodetector;

one side of the receiving groove is provided with a multiplexing receiving bottom plate used for bearing the optical demultiplexer;

one end of the optical demultiplexer is connected with the second optical fiber joint;

the other side of the receiving groove is a flexible board bottom board, and a third flexible circuit board is electrically connected with the receiving photoelectric detector through the upper part of the flexible board bottom board.

6. The optical module according to claim 5, wherein the flexible board substrate is provided with a flexible board position limiting portion for limiting the third flexible circuit board.

7. The optical module according to claim 5, wherein an inner wall of the first side plate holder is provided with a substrate-side groove, the substrate-side groove communicating with the receiving groove.

8. The optical module of claim 5, wherein the second side plate bracket is provided with a substrate side opening communicating with the receiving groove.

9. The optical module according to claim 3, wherein the first side plate bracket is provided with a first limiting portion protruding from an upper surface of the first side plate bracket;

a first cover plate opening is formed between the first limiting part and the first connecting part;

the lower surface of the light receiving cover plate is provided with a cover plate protruding part, and the cover plate protruding part is embedded into the first cover plate opening.