Optical module, optical cage, optical communication device and optical communication equipment

Abstract

The embodiment of the utility model discloses an optical module, an optical cage, an optical communication device and optical communication equipment, and the optical module specifically can be a four-channel small pluggable optical module, a four-channel small pluggable dual-density optical module, a 10-gigabit small pluggable optical module, a small pluggable optical module and the like. The optical module has a plugging direction, and the optical module can be installed or separated along the plugging direction. The optical module comprises a module body part, and the outer wall surface of the module body part is provided with a limiting step part. The limiting step part comprises at least two step stop surfaces. And the step stop surfaces are sequentially arranged along the plugging direction. According to the scheme, the limiting step part is provided with at least two step stop surfaces, so that the assembly gap between the optical module and the optical cage can be adjusted, and the installation reliability of the optical module and the optical cage can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical communication, and in particular to an optical module, an optical communication device, and an optical communication equipment. BACKGROUND

[0002] The optical communication device includes the optical module and the optical cage, and the optical module is installed in the optical cage to realize conversion between optical signals and electrical signals.

[0003] In the related art, the cage wall of the optical cage is provided with an elastic body to limit the installation position of the optical module in the optical cage through the elastic body. However, the structure design of the optical module and the optical cage in the related art lacks rationality, which easily affects the installation reliability of the optical module in the optical cage.

[0004] Therefore, how to provide a scheme to overcome or alleviate the above-mentioned defects is still a technical problem to be solved by those skilled in the art. UTILITY MODEL CONTENT

[0005] The embodiments of the present application provide an optical module, an optical cage, an optical communication device, and an optical communication equipment, wherein the optical module is provided with a limiting step portion, and the limiting step portion is provided with at least two step stop surfaces, which can adjust the assembly gap between the optical module and the optical cage and improve the installation reliability of the optical module and the optical cage.

[0006] In a first aspect, the embodiments of the present application provide an optical module, which can adopt various packaging methods, such as a four-channel small form-factor pluggable optical module, a four-channel small form-factor pluggable double-density optical module, a 10-gigabit small form-factor pluggable optical module, a small form-factor pluggable optical module, etc. The optical module has a plug-in direction, and the optical module can be installed or separated along the plug-in direction. The optical module includes a module body portion, which specifically can include a shell and a circuit board, etc. The outer wall surface of the module body portion is provided with a limiting step portion. The limiting step portion includes at least two step stop surfaces. The step stop surfaces are arranged in sequence along the plug-in direction.

[0007] In the above-mentioned scheme, the optical cage can be provided with an elastic body, and in the specific installation, the optical module can be inserted into the optical cage along the plug-in direction. The elastic body can abut against one step stop surface along the plug-in direction to limit the optical module in the optical cage. Moreover, by adjusting the abutment between the elastic body and different step stop surfaces, the assembly gap between the optical module and the optical cage can be adjusted to increase or reduce the assembly gap between the optical module and the optical cage as needed, so that the adjustability of the optical module during installation can be greatly improved.

[0008] It should be understood that the smaller the assembly gap between the optical module and the optical cage before the optical module is installed in the optical cage, the lower the possibility of the optical module floating in the plug-in direction after the optical module is installed in the optical cage, and the more advantageous it is to ensure the reliable installation of the optical module, which has a relatively positive significance for ensuring the reliable connection of subsequent optical modules and control components in optical communication equipment and the stability of signal transmission.

[0009] In actual applications, the number of the limiting step portions can be at least two, and can be distributed at different positions of the optical module, so as to abut against the elastic body of the optical cage at different positions, thereby more greatly improving the installation reliability of the optical module inside the optical cage.

[0010] In a possible implementation, each step stop surface is perpendicular to the plug-in direction.

[0011] In this way, when the elastic body and the step stop surface abut against each other in the plug-in direction, the abutment reliability of the elastic body and the step stop surface can be relatively high. In this way, even if the elastic body is impacted by a relatively large external load (such as vibration, drop, etc.), the elastic body is not easy to separate from the step stop surface, and the reliable installation of the optical module inside the optical cage can be more greatly ensured, thereby the signal transmission stability between the optical module and the control components in the optical communication equipment can be ensured.

[0012] In a possible implementation, the limiting step portion further includes a step connecting surface. The step connecting surface connects two adjacent step stop surfaces. The step connecting surface is parallel to the plug-in direction. In this way, the step connecting surface does not have the function of abutting against the elastic body.

[0013] In a possible implementation, the limiting step portion further includes a step connecting surface. The step connecting surface connects two adjacent step stop surfaces. The step connecting surface is arranged at an angle with the plug-in direction. In this way, the step connecting surface can also abut against the elastic body in the plug-in direction to a certain extent, so as to limit the assembly gap between the optical module and the optical cage, thereby the adjustability of the optical module during installation can be increased.

[0014] Taking the number of the step stop surfaces as two as an example, when the elastic body and one step stop surface abut against each other in the plug-in direction, the optical module and the optical cage can have a first assembly gap, and when the elastic body and the other step stop surface abut against each other in the plug-in direction, the optical module and the optical cage can have a second assembly gap, which can be greater than the first assembly gap. In this way, when the step connecting surface between the elastic body and the two step stop surfaces abuts against the plug-in direction, according to the different positions of the elastic body and the step connecting surface, the assembly gap between the optical module and the optical cage can change between the first assembly gap and the second assembly gap, so that the optical module and the optical cage can have more types of assembly gaps.

[0015] In a possible implementation, the outer wall surface of the module body part is provided with a first groove extending along the plug-in direction. The first groove has a groove end wall at one end in the plug-in direction. At least part of the groove end wall is provided with a limiting step part.

[0016] In this way, the limiting step part is recessed with respect to the outer wall surface of the module body part, and the limiting step part does not increase the external size of the module body part, which is conducive to the miniaturization design of the optical module. Meanwhile, the first groove can also serve as a mounting channel, which can be used to mount an unlocking component. The specific structure of the unlocking component can refer to related technologies, and is not limited herein. The unlocking component can be mounted in the first groove and can slide along the first groove to ensure the movement direction of the unlocking component. The unlocking component can interact with the elastic body of the optical cage to drive the elastic body to disengage from the step stop surface, thereby releasing the locking state between the optical cage and the optical module, so that the optical module can be at least partially pulled out of the optical cage.

[0017] In a possible implementation, the outer wall surface of the module body part is further provided with a second groove extending along the plug-in direction. The second groove is located on one side of the groove end wall in the plug-in direction. The second groove is in communication with the first groove. The second groove can also be used to mount the unlocking component.

[0018] In a possible implementation, the groove end wall includes a first wall part and a second wall part arranged at intervals. The first wall part and the second wall part are respectively located on both sides of the slot opening of the second groove. The first wall part and the second wall part are both provided with a limiting step part to improve the abutment reliability of the elastic body and the limiting step part.

[0019] In a second aspect, the embodiments of the present application also provide an optical cage. The optical cage has a plug-in direction, which is specifically the plug-in and separation direction of the optical module and the optical cage. The optical cage includes a cage body part. An inner wall surface of the cage body part is provided with a limiting step part. The limiting step part includes at least two step stop surfaces. The step stop surfaces are arranged in sequence along the plug-in direction.

[0020] In the above scheme, the optical module can be provided with an elastic member. In specific installation, the optical module can be inserted into the optical cage along the plug-in direction. The elastic body can abut against one step stop surface along the plug-in direction to limit the optical module in the optical cage. Moreover, by adjusting the abutment between the elastic body and different step stop surfaces, the assembly gap between the optical module and the optical cage can be adjusted, so as to increase or reduce the assembly gap between the optical module and the optical cage as needed, thereby greatly improving the adjustability of the optical module during installation.

[0021] In a third aspect, the embodiments of the present application further provide an optical communication device. The optical communication device comprises an optical module and an optical cage. The optical communication device has a plugging direction, which can be the plugging and unplugging direction of the optical module and the optical cage. One of the optical module and the optical cage is provided with an elastic body. The other of the optical module and the optical cage is provided with a limiting step portion. The limiting step portion comprises at least two step stop surfaces, and each step stop surface is arranged in sequence along the plugging direction. The elastic body can abut against one step stop surface along the plugging direction.

[0022] In a specific installation, the optical module can be inserted into the optical cage, and the elastic body can abut against one step stop surface along the plugging direction to limit the optical module in the optical cage. In addition, by adjusting the abutment of the elastic body and different step stop surfaces, the assembly gap between the optical module and the optical cage can be adjusted, so as to increase or reduce the assembly gap between the optical module and the optical cage as needed, thereby greatly improving the adjustability of the optical module during installation.

[0023] In a fourth aspect, the embodiments of the present application further provide an optical communication device. The optical communication device can be a server, a data center, an optical transceiver, a fiber transceiver, a switch, an optical network adapter, a fiber high-speed server, a base station, a repeater, a box-type or frame-type device in the field of telecommunication, etc. The optical communication device comprises a control component and an optical communication device. The control component can comprise a printed circuit board. The optical communication device is the optical communication device of the third aspect, and the optical module in the optical communication device is in communication connection with the control component.

[0024] Since the assembly gap between the optical module and the optical cage in the optical communication device can be adjusted, the optical module and the optical cage can be relatively reliably installed. Thus, after the optical communication device is installed in the optical communication device, the signal connection reliability and stability of the optical communication device and the control component can be high. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 Structure diagram of an implementation manner of the optical communication device provided by the embodiments of the present application;

[0026] Figure 2 Structure diagram of an implementation manner of the optical module provided by the embodiments of the present application;

[0027] Figure 3 For Figure 2 Partial enlarged view of the A area in FIG. 6;

[0028] Figure 4 For Figure 3 Sectional view of one scheme of FIG. 6 in the B-B direction;

[0029] Figure 5 For Figure 3Another solution is shown in the cross-sectional view in the B-B direction.

[0030] Figure 6 A structure diagram of an implementation of the light cage provided by the embodiment of the present application.

[0031] Reference signs:

[0032] 1000 - body

[0033] 2000 - optical communication device; 2100 - optical module; 2110 - module body part; 2111 - limiting step part; 2111A - step stop surface; 2111B - step connecting surface; 2112 - first groove body; 2113 - second groove body; 2200 - light cage; 2210 - cage body part; 2211 - elastic body. DETAILED DESCRIPTION

[0034] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0035] In the description of the embodiments of the present application, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0036] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, "connection" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium.

[0037] The orientation terms mentioned in the embodiments of the present application, such as "inner", "outer", etc., are only the direction of reference to the drawings, therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present application, and are not intended to indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, cannot be understood as a limitation of the embodiments of the present application.

[0038] In the description of the embodiments of the present application, the term "comprising" or "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or further includes elements inherent in such process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article or apparatus including the element.

[0039] Please refer to Figure 1 , Figure 1 The structure diagram of an implementation of the optical communication device provided by the embodiments of the present application.

[0040] The embodiments of the present application provide an optical communication device, which can be a server, a data center, an optical transceiver, a fiber transceiver, a switch, an optical network adapter, a fiber high-speed ball machine, a base station, a repeater, a box-type or frame-type device in the field of telecommunication, etc., and can be used to implement an interconnection of electro-optical conversion. In combination with Figure 1 The optical communication device can include a body 1000, a control component (not shown in the figure) and at least two optical communication devices 2000.

[0041] The body 1000 is an external frame of the optical communication device, and each optical communication device 2000 and other components can be mounted on the body 1000, so as to be integrated and assembled through the body 1000, thereby improving the structural compactness and power density of the optical communication device. Moreover, the body 1000 also basically determines the structural appearance of the optical communication device. In some implementations, the body 1000 can be roughly in the shape of a cuboid. In other implementations, the body 1000 can also be in the shape of a cylinder, a special-shaped body or other structural shapes, which are not limited herein.

[0042] The control component can specifically include a printed circuit board (PCB), which can be integrated in the aforementioned machine body 1000. Various styles of electronic devices, such as a processor, can be mounted on the printed circuit board. The core of the processor can be a central processing unit (CPU), or can be another application specific integrated circuit (ASIC). Alternatively, the processor can be another general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or another programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or the like.

[0043] Each optical communication device 2000 can be inserted into the machine body 1000 to be communicatively connected to the control component and the like.

[0044] Please refer to Figures 2-6 , Figure 2 a structural schematic diagram of an implementation of the optical module provided by the embodiments of the present application; Figure 3 is Figure 2 a local enlarged view of the A area in FIG. 10; Figure 4 is Figure 3 a sectional view of one scheme of the optical module in the B-B direction; Figure 5 is Figure 3 a sectional view of another scheme of the optical module in the B-B direction; Figure 6 a structural schematic diagram of an implementation of the optical cage provided by the embodiments of the present application.

[0045] As Figure 2 and Figure 6 indicate, in the embodiments of the present application, the optical communication device 2000 includes an optical module 2100 and an optical cage 2200. The optical module 2100 can be inserted into the optical cage 2200. The optical module 2100 and the optical cage 2200 can each have a plugging direction P. The optical module 2100 can be inserted into the interior of the optical cage 2000 along the plugging direction P, and the optical module 2100 can also be pulled out of the optical cage 2000 along the plugging direction P. That is, the plugging direction P is the mounting and dismounting direction of the optical module 2100 and the optical cage 2200.

[0046] The optical module 2100 can adopt various packaging manners, such as a Quad Small Form-factor Pluggable (QSFP), a Quad Small Form Factor Pluggable-Double Density (QSFP-DD), a 10 Gigabit Small Form Factor Pluggable (XFP), a Small Form Pluggable (SFP), and the like. In the plugging direction P, one end of the optical module 2100 is provided with at least one optical port (not shown in the figure) for connecting with an external optical fiber cable, and the other end of the optical module 2100 can be connected with a control component to convert between optical signals and electrical signals.

[0047] The optical module 2100 includes a module body part 2110. The module body part 2110 includes a housing and a circuit structure arranged in the housing. The shape of the housing can be set as needed and is not limited herein. The circuit structure is the main electronic component for realizing photoelectric conversion in the optical module 2100, including a circuit board and electronic devices arranged on the circuit board, the number and types of which are not limited herein, and can be set as needed by those skilled in the art in actual applications.

[0048] In combination with Figure 2 and Figure 3 , the outer wall surface of the module body part 2110 is provided with a limiting step part 2111; it should be understood that the limiting step part 2111 can be specifically a housing of the module body part 2110. The limiting step part 2111 includes at least two step stop surfaces 2111A. Each step stop surface 2111A is arranged in sequence along the plugging direction P. In combination with Figure 6 , the cage wall of the optical cage 2200 can be provided with an elastic body 2211. In a specific assembly, the optical module 2100 can be inserted into the optical cage 2200 along the plugging direction P, and the elastic body 2211 can abut against one step stop surface 2111A along the plugging direction P to limit the optical module 2100 in the optical cage 2200. Moreover, by adjusting the abutment between the elastic body 2211 and different step stop surfaces 2111A, the assembly gap between the optical module 2100 and the optical cage 2200 can be adjusted to increase or reduce the assembly gap between the optical module 2100 and the optical cage 2200 as needed, thereby greatly improving the adjustability of the optical communication device 2000 provided by the embodiments of the present application.

[0049] For example, reference can be made to Figure 4The limiting step portion 2111 can include two step stop surfaces 2111A, which are a left stop surface and a right stop surface, respectively. When the elastic body 2211 and the left stop surface abut along the plug-in direction P, the depth of the optical module 2100 inserted into the optical cage 2200 can be relatively large, the assembly gap between the optical module 2100 and the optical cage 2200 can be relatively small, and the connection reliability of the optical module 2100 can be higher. When the elastic body 2211 and the right stop surface abut along the plug-in direction P, the depth of the optical module 2100 inserted into the optical cage 2200 can be relatively small, and the assembly gap between the optical module 2100 and the optical cage 2200 can be relatively large.

[0050] Here, the embodiments of the present application do not limit the specific number of the step stop surfaces 2111A, and in actual applications, a person skilled in the art can select according to specific needs as long as the requirements are met. For example, the number of the step stop surfaces 2111A can be two, three, four, or more. In addition, the embodiments of the present application also do not limit the specific size of each step stop surface 2111A, and in actual applications, a person skilled in the art can also set according to specific needs as long as the stop requirements for the elastic body 2211 are met.

[0051] In some optional implementations, as shown in Figure 4 Each of the step stop surfaces 2111A can be perpendicular to the plug-in direction P.

[0052] In this way, when the elastic body 2211 and the step stop surface 2111A abut along the plug-in direction P, the abutment reliability of the elastic body 2211 and the step stop surface 2111A can be relatively high. In this way, even if impacted by relatively large external loads (such as vibration, drop, etc.), the elastic body 2211 is not easy to separate from the step stop surface 2111A, which can more greatly ensure the reliable installation of the optical module 2100 in the optical cage 2200, and further can ensure the signal transmission stability between the optical module 2100 and the control component.

[0053] The limiting step portion 2111 can also include a step connecting surface 2111B. The step connecting surface 2111B can connect two adjacent step stop surfaces 2111A. In addition, the step connecting surface 2111B can be parallel to the plug-in direction P, and at this time, the step connecting surface 2111B does not have the function of abutting with the elastic body 2211.

[0054] It should be understood that the "vertical", "parallel" and other related limitations mentioned in the embodiments of the present application all refer to "approximately vertical", "approximately parallel", and do not require absolute verticality and parallelism, which allows for certain processing errors, etc.

[0055] In some optional implementations, as shown inFigure 5 As shown, the above-mentioned limiting step part 2111 can further include a step connecting surface 2111B. The step connecting surface 2111B can connect two adjacent step stop surfaces 2111A. And the step connecting surface 2111B can be arranged at an angle with the plugging direction P, and the angle can be between 0 degrees and 90 degrees. In this way, the step connecting surface 2111B can also abut the elastic body 2211 along the plugging direction P to a certain extent to limit the assembly gap between the optical module 2100 and the optical cage 2200, thereby increasing the adjustability of the optical communication device 2000.

[0056] Still taking two step stop surfaces 2111A as an example, in combination with Figure 5 , the two step stop surfaces 2111A can be a left stop surface and a right stop surface respectively. When the elastic body 2211 abuts the left stop surface along the plugging direction P, the optical module 2100 and the optical cage 2200 can have a first assembly gap. When the elastic body 2211 abuts the right stop surface along the plugging direction P, the optical module 2100 and the optical cage 2200 can have a second assembly gap, which can be greater than the first assembly gap. When the elastic body 2211 abuts the step connecting surface 2111B along the plugging direction P, according to the abutting position of the elastic body 2211 and the step connecting surface 2111B, the assembly gap between the optical module 2100 and the optical cage 2200 can change between the first assembly gap and the second assembly gap, so that the optical module 2100 and the optical cage 2200 can have more types of assembly gaps.

[0057] In some optional implementations, as Figure 2 and Figure 3 shown, the outer wall surface of the module body part 2110 can be provided with a first groove body 2112 extending along the plugging direction P. The first groove body 2112 can have a groove end wall (not labeled in the figure) at one end of the plugging direction P, and at least part of the groove end wall can be provided with the above-mentioned limiting step part 2111.

[0058] In this way, the limiting step portion 2111 is recessed relative to the outer wall surface of the module body portion 2110, and the limiting step portion 2111 does not increase the external size of the module body portion 2110, which is conducive to the miniaturization design of the optical module 2100. Meanwhile, the first groove body 2112 can also serve as a mounting channel, and specifically can be used to mount an unlocking component (not shown in the figure). The unlocking component can be mounted in the first groove body 2112 and can slide along the first groove body 2112 to ensure the movement direction of the unlocking component. The unlocking component can interact with the elastic body 2211 of the optical cage 2200 to drive the elastic body 2211 to disengage from the step stop surface 2111A, so as to release the locking state between the optical cage 2200 and the optical module 2100.

[0059] It should be understood that in addition to the above scheme of arranging the first groove body 2112, in some other implementations of the embodiments of the present application, a protrusion can also be arranged on the outer wall surface of the module body portion 2110, and then the limiting step portion 2111 is arranged on the protrusion, which is also feasible.

[0060] In some optional implementations, as shown in Figure 2 and Figure 3 The outer wall surface of the module body portion 2110 can also be provided with a second groove body 2113 extending in the plug-in direction P, the second groove body 2113 can be located on one side of the slot end wall in the plug-in direction P, and the second groove body 2113 and the first groove body 2112 can be connected in communication. The above-mentioned second groove body 2113 can also be used to mount the aforementioned unlocking component.

[0061] In some optional implementations, the slot end wall can include a first wall portion and a second wall portion arranged at intervals, and the first wall portion and the second wall portion can be located on both sides of the slot opening of the second groove body 2113, respectively.

[0062] Referring to the orientation and positional relationship in Figure 3 , the slot opening of the second groove body 2113 can be located substantially in the middle region of the slot end wall of the first groove body 2112 in the up-down direction. In this way, the slot end wall can be broken by the slot opening of the second groove body 2113 into the first wall portion and the second wall portion, and the first wall portion and the second wall portion can be arranged at intervals in the up-down direction, and the first wall portion and the second wall portion can be provided with the aforementioned limiting step portion 2111 to improve the reliability of the limiting of the elastic body 2211. In addition, the slot opening of the second groove body 2113 can also be located substantially in the upper region or the lower region of the slot end wall of the first groove body 2112, and at this time, the slot end wall can only include one wall portion.

[0063] In the above-mentioned various implementations, the light limiting step part 2111 is arranged on the optical module 2100, and the elastic body 2211 is arranged on the optical cage 2200. In fact, in some other implementations of the embodiments of the present application, the light limiting step part 2111 can be arranged on the optical cage 2200, and the elastic body 2211 can be arranged on the optical module 2100. Specifically, the optical cage 2200 can include a cage body part 2210, and the inner wall surface of the cage body part 2210 can be provided with the above-mentioned light limiting step part 2111. The light limiting step part 2111 can include at least two step stop surfaces 2111A, and each step stop surface 2111A is arranged along the plug-in direction P in sequence. The module body part 2110 can be provided with the above-mentioned elastic body 2211. Then, the elastic body 2211 of the module body part 2110 and the light limiting step part 2111 of the cage body part 2210 are in abutment, so that the installation and fixation of the optical module 2100 in the optical cage 2200 can also be achieved.

[0064] The principles and implementation manners of the present application are described by using specific examples in the present text. The above-mentioned implementation examples are only used to help understand the method of the present application and its core idea. It should be pointed out that, for ordinary skilled in the art, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. An optical module characterized by comprising: The optical module has a plug-in direction, and the module body part is provided with a limiting step part on the outer wall surface thereof, the limiting step part comprising at least two step stop surfaces, each of the step stop surfaces being arranged in sequence along the plug-in direction.

2. The optical module according to claim 1, wherein Each of the step stop surfaces is perpendicular to the plug-in direction.

3. The optical module of claim 1, wherein, The limiting step part further comprises a step connecting surface connecting the adjacent two step stop surfaces, and the step connecting surface is parallel to the plug-in direction.

4. The optical module of claim 1, wherein, The limiting step part further comprises a step connecting surface connecting the adjacent two step stop surfaces, and the step connecting surface is arranged at an angle with the plug-in direction.

5. The optical module according to any one of claims 1 to 4, wherein The outer wall surface of the module body part is provided with a first groove extending along the plug-in direction, and the first groove has a groove end wall at one end in the plug-in direction, and at least part of the groove end wall is provided with the limiting step part.

6. The optical module according to claim 5, wherein The outer wall surface of the module body part is further provided with a second groove extending along the plug-in direction, and the second groove is located on one side of the groove end wall in the plug-in direction, and the second groove is in communication with the first groove.

7. The optical module according to claim 6, wherein The groove end wall comprises a first wall part and a second wall part arranged at intervals, and the first wall part and the second wall part are located on both sides of the slot opening of the second groove respectively, and the first wall part and the second wall part are both provided with the limiting step part.

8. A light cage, characterized in that The optical cage has a plug-in direction, and the cage body part is provided with a limiting step part on the inner wall surface thereof, the limiting step part comprising at least two step stop surfaces, each of the step stop surfaces being arranged in sequence along the plug-in direction.

9. An optical communication device, comprising: The optical communication device has a plug-in direction, and the optical communication device comprises an optical module and an optical cage, one of the optical module and the optical cage is provided with an elastic body, and the other of the optical module and the optical cage is provided with a limiting step part, the limiting step part comprising at least two step stop surfaces, each of the step stop surfaces being arranged in sequence along the plug-in direction, and the elastic body can abut against one of the step stop surfaces along the plug-in direction.

10. An optical communication device, comprising: The optical communication device comprises a control part and an optical communication device, the optical communication device is the optical communication device of claim 9, and the optical module in the optical communication device is in communication connection with the control part.

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