Dual-SC-interface optical module, optical line terminal device, and optical communication system

Abstract

Provided in the present application are a dual-SC-interface optical module, an optical line terminal device, and an optical communication system. In an interface portion of the optical module, a rectangular mounting region defined by four barrier walls is divided into two interfaces by means of a partition plate, so that one optical module can receive two paths of light rays. Thus, when the optical module is applied to the optical line terminal device, the number of interfaces of the optical line terminal device can be doubled without increasing the number of optical modules of the optical line terminal device, so that expansion upgrading of the optical line terminal device is realized without changing the layout space of the optical line terminal device, and thus expansion upgrading of the optical communication system is realized, thereby meeting the requirements of a client for a network transmission rate and capacity.

Description

A dual-SC interface optical module, optical line terminal equipment and optical communication system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on November 3, 2023, with application number 202311465142.0 and invention name "A dual SC interface optical module, optical line terminal equipment and optical communication system", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of optical communication technology, and in particular to a dual-SC interface optical module, an optical line terminal device, and an optical communication system. Background Art

[0004] An optical line terminal (OLT) consists of a single board and multiple optical modules mounted on it. Each optical module typically has a single port for connecting to a communication cable, thereby receiving a single line of light. Currently, customer demands for network transmission speeds and capacity are increasing. To expand the capacity of OLTs, more optical modules are required to provide more interfaces.

[0005] However, since the optical line terminal equipment in the access network field is usually arranged in the client's computer room, and the spatial volume of the client's computer room is fixed after the optical line terminal equipment is delivered to the customer, the layout space of the optical line terminal equipment is relatively limited, resulting in the optical line terminal equipment being unable to be expanded and upgraded due to the inability to install more optical modules.

[0006] Based on this, how to achieve capacity expansion and upgrading of optical line terminal equipment within a limited layout space has become a difficult problem that needs to be solved urgently by those skilled in the art.

[0007] Summary of the Invention

[0008] The present application provides a dual-SC interface optical module, an optical line terminal device, and an optical communication system, which can achieve capacity expansion and upgrade of the optical line terminal device by increasing the number of interfaces of each optical module without significantly increasing the volume of the optical line terminal device.

[0009] In a first aspect, the present application provides a dual-SC interface optical module, comprising a housing, an interface portion, and a first retaining wall, a second retaining wall, a third retaining wall, and a fourth retaining wall. The first retaining wall and the second retaining wall are disposed opposite each other, and the third retaining wall and the fourth retaining wall are disposed opposite each other. The first retaining wall, the second retaining wall, the third retaining wall, and the fourth retaining wall are sequentially connected to form a rectangular mounting area. A partition is located in the rectangular mounting area, the partition is located between the first retaining wall and the second retaining wall, and the partition is disposed parallel to the first and second retaining walls. Furthermore, the partition is connected to the third and fourth retaining walls, thereby separating the rectangular mounting area into a first interface and a second interface. Furthermore, the first retaining wall has a first guide groove, the opening of which is located at an end of the first retaining wall and extends parallel to the third and fourth retaining walls. Similarly, the second retaining wall has a second guide groove, the opening of which is located at an end of the second retaining wall and extends parallel to the third and fourth retaining walls.

[0010] The optical module provided in this application includes two interfaces that can be used to connect to communication cables to receive two paths of light. This doubles the number of interfaces of the optical line terminal device without increasing the number of optical modules, thereby enabling expansion and upgrading of the optical line terminal device while maintaining the same layout space. Furthermore, in this optical module, by disposing the first and second guide grooves on the opposing first and second retaining walls, respectively, the interface portion of the optical module can be made smaller, thereby facilitating a miniaturized design of the optical module. Furthermore, the design of the first and second guide grooves can also provide a foolproofing effect when plugging the communication cable into the first and second interfaces, thereby improving the efficiency of plugging the communication cable into the corresponding interfaces.

[0011] In a possible implementation of the present application, the optical module includes a first optical device and a second optical device, and the first optical device and the second optical device are arranged in the direction from the first retaining wall to the second retaining wall. The first optical device includes a first communication cable connector, and the second optical device includes a second communication cable connector. In addition, the housing also includes an optical device mounting portion, and the optical device mounting portion is located on the side of the interface portion away from the notch of the first guide groove and the notch of the second guide groove. The first optical device and the second optical device are installed in the optical device mounting portion, and the first communication cable connector is inserted into the first interface, and the second communication cable connector is inserted into the second interface. In this way, the first communication cable connector of the first optical device and the second communication cable connector of the second optical device can be connected to the communication cable through the corresponding interface, thereby realizing the reception of light by the first optical device and the second optical device.

[0012] The housing further includes a first side cover and a second side cover. The first side cover is disposed opposite the second side cover, and is disposed on the same side as the first retaining wall. The first side cover abuts the end of the first retaining wall facing away from the notch of the first guide groove. The second side cover is disposed on the same side as the second retaining wall, and abuts the end of the second retaining wall facing away from the notch of the second guide groove. This allows both the first and second optical devices to be mounted on the side of the housing, facilitating installation of the first and second optical devices.

[0013] In the present application, the first side cover is locked with the optical device mounting portion through a plurality of first fasteners, and the plurality of first fasteners are distributed around the circumference of the first optical device to improve the connection reliability between the first side cover and the optical device mounting portion.

[0014] Furthermore, when the multiple first fasteners are connected to the optical device mounting portion, at least one first fastener can be locked to the end of the optical device mounting portion near the interface portion, and at least one first fastener can be locked to the end of the optical device mounting portion away from the interface portion. This allows the first side cover to restrict the movement of the first optical device along the direction from the first side cover to the second side cover, thereby effectively preventing the first optical device from shaking during the insertion and removal of the communication cable and the optical module, thereby improving the stability of the first optical device in transmitting optical signals.

[0015] Similarly, the second side cover plate can be locked to the optical device mounting portion via a plurality of second fasteners, and the plurality of second fasteners are distributed around the circumference of the second optical device, thereby improving the connection reliability between the second side cover plate and the optical device mounting portion.

[0016] In addition, at least one second fastener is locked to the end of the optical device mounting portion near the interface portion, and at least one second fastener is locked to the end of the optical device mounting portion away from the interface portion. This allows the second side cover to restrict the movement of the second optical device from the first side cover to the second side cover, effectively preventing the second optical device from shaking during insertion and removal of the communication cable and the optical module, thereby improving the stability of the second optical device in transmitting optical signals.

[0017] In one possible implementation of the present application, a first elastic material layer is disposed between the end surface of the first optical component facing the first side cover and the first side cover, and the first optical component and the first side cover squeeze the first elastic material layer. This improves the support strength of the first side cover for the first optical component while allowing heat generated by the first optical component to be transferred to the first side cover, thereby dissipating heat from the first optical component through the first side cover.

[0018] In addition, a second elastic material layer is disposed between the end surface of the second optical device facing the second side cover and the second side cover, and the second optical device and the second side cover squeeze the second elastic material layer. This improves the support strength of the second side cover for the second optical device while allowing heat generated by the second optical device to be transferred to the second side cover, thereby dissipating heat from the second optical device through the second side cover.

[0019] In the present application, to improve the heat dissipation performance of the first side cover, its material can be, but is not limited to, plastic, zinc alloy, or copper alloy. Furthermore, the first side cover can be provided with first heat dissipation teeth to increase the heat dissipation area of ​​the first side cover and thereby improve the heat dissipation efficiency of the first side cover, thereby achieving effective heat dissipation of the first optical device by the first side cover.

[0020] The second side cover can also be made of plastic, zinc alloy, or copper alloy. The first and second side covers can be made of the same or different materials. Furthermore, the second side cover can be provided with second heat dissipation teeth to increase the heat dissipation area of ​​the second side cover, thereby improving the heat dissipation efficiency of the second side cover, thereby effectively dissipating heat from the second optical device.

[0021] In one possible implementation of the present application, the first optical device further includes a first tube body, a first communication cable connector is connected to one end of the first tube body, a third elastic material layer is provided between the connection between the first optical communication cable connector and the first tube body and the side wall of the optical device mounting portion, and the third elastic material layer is squeezed between the connection between the first communication cable connector and the first tube body and the side wall of the optical device mounting portion. This allows for effective overlap between the first optical device and the optical device mounting portion, improving the structural reliability of the first optical device while also forming a Faraday cage at the optical device mounting portion, thereby effectively reducing the leakage of noise generated by the first optical device.

[0022] Similarly, the second optical device also includes a second tube body, a second communication cable connector is connected to one end of the second tube body, and a fourth elastic material layer is disposed between the connection between the second communication cable connector and the second tube body and the side wall of the optical device mounting portion. Furthermore, the fourth elastic material layer is squeezed between the connection between the second communication cable connector and the second tube body and the side wall of the optical device mounting portion. This effectively overlaps the first optical device and the optical device mounting portion, improving the structural reliability of the first optical device while also forming a Faraday cage at the optical device mounting portion, thereby effectively reducing the leakage of noise generated by the first optical device.

[0023] In one possible implementation of the present application, along the direction from the first retaining wall to the first side cover, the first guide groove includes a first guide portion and a second guide portion. The first guide portion extends through the first retaining wall, and the second guide portion is disposed on the first side cover, with the first guide portion and the second guide portion being disposed opposite each other. This allows the first guide groove to provide a sufficiently long guide length for connecting the cable head of the communication cable to the optical module, thereby improving the convenience of connecting the communication cable and the optical module.

[0024] Similarly, along the direction from the second retaining wall to the second side cover, the second guide groove includes a third guide portion and a fourth guide portion. The third guide portion extends through the second retaining wall, and the fourth guide portion is disposed on the second side cover, with the third and fourth guide portions being disposed opposite each other. This allows the second guide groove to provide a sufficiently long guide length for connecting the cable head of the communication cable to the optical module, thereby improving the convenience of connecting the communication cable and the optical module.

[0025] In a possible implementation of the present application, the optical module also includes a first clip and a second clip, the first clip is installed on the first interface, the first clip includes a first mounting portion and two first clamping portions, the first mounting portion is connected to the side wall of the interface portion, the first mounting portion includes a first mounting hole, the first mounting hole is coaxially arranged with the first communication cable connector, and the aperture of the first mounting hole is greater than or equal to the outer diameter of the first communication cable connector, so that the first communication cable connector can extend from the first mounting hole to the first interface. In addition, the two first clamping portions are located on the side of the first mounting portion away from the optical device mounting portion, the first mounting hole is located between the two first clamping portions, the two first clamping portions are arranged in the direction from the third retaining wall to the fourth retaining wall, and the end of each first clamping portion away from the first mounting portion is provided with a first limiting protrusion, and the first limiting protrusions of the two first clamping portions are arranged relative to each other. In this way, the two first clamping parts of the first buckle can limit the cable head of the communication cable inserted in the first interface to prevent the cable head of the communication cable from falling out of the first interface, thereby improving the connection reliability between the cable head of the communication cable and the first interface, which is beneficial to improving the reliability of the optical module in receiving optical signals.

[0026] Similarly, when the second clip is specifically configured, the second clip is mounted on the second interface. The second clip includes a second mounting portion and two second clamping portions. The second mounting portion is connected to the side wall of the interface portion. The second mounting portion includes a second mounting hole. The second mounting hole is coaxially arranged with the second communication cable connector, and the aperture of the second mounting hole is greater than or equal to the outer diameter of the second communication cable connector, so that the second communication cable connector can extend from the second mounting hole to the second interface. In addition, the two second clamping portions are located on two sides of the second mounting portion facing away from the optical device mounting portion. The second mounting hole is located between the two second clamping portions. The two second clamping portions are arranged in a direction from the third retaining wall to the fourth retaining wall. The end of each second clamping portion facing away from the second mounting portion is provided with a second limiting protrusion, and the second limiting protrusions of the two second clamping portions are arranged opposite each other. In this way, the two second clamping portions of the second clip can limit the cable head of the communication cable inserted into the second interface to prevent the cable head of the communication cable from being dislodged from the second interface, thereby improving the plugging reliability of the cable head of the communication cable and the second interface, which is beneficial to improving the reliability of the optical module in receiving optical signals.

[0027] In a possible implementation of the present application, in order to meet the miniaturization design requirements of the optical module, the hole center distance between the first communication cable connector and the second communication cable connector can be set to 7.4 mm to 12 mm in the direction from the first retaining wall to the second retaining wall.

[0028] In addition, the first interface and the second interface are arranged symmetrically along the direction from the first retaining wall to the second retaining wall. Alternatively, the thickness of the partition is set to 0.4mm to 5mm along the direction from the first retaining wall to the second retaining wall. These designs can also effectively reduce the size of the optical module.

[0029] In addition, the thickness of the partition is 0.4 mm to 5 mm in the direction from the first retaining wall to the second retaining wall, which can improve the reliability of plugging and unplugging the optical module and the communication cable while ensuring the structural strength of the partition.

[0030] In a possible implementation of the present application, the housing further comprises a circuit board mounting portion, and the optical device mounting portion is located between the circuit board mounting portion and the interface portion. In addition, the housing further comprises a slide groove, the notch of the slide groove is opened in the arrangement direction from the third retaining wall to the fourth retaining wall, a portion of the slide groove is located in the circuit board mounting portion, and the slide groove extends along the arrangement direction of the circuit board mounting portion, the optical device mounting portion and the interface portion. The optical module further comprises an unlocking assembly, the unlocking assembly comprises an unlocking piece and a handle, the unlocking piece is mounted in the slide groove, the handle is connected to the end of the unlocking piece facing away from the circuit board mounting portion, and a portion of the handle is located outside the housing. The end of the unlocking piece facing away from the handle is located in the circuit board mounting portion, and the end of the unlocking piece facing away from the handle is on the surface of the first circuit board mounting portion. In addition, the circuit board mounting portion is provided with a hook, and the direction in which the hook protrudes from the surface of the circuit board mounting portion is the same as the direction of the notch of the slide groove. In this way, when the optical module is plugged into the cage of the single board of the optical line terminal equipment, the hook is engaged with the cage, and the cage can restrict the movement of the optical module in the direction of separation from the cage to prevent the optical module from falling out of the cage, thereby achieving reliable plugging of the optical module and the cage.

[0031] When it is necessary to pull out the optical module plugged into the cage, a pulling force can be applied to the handle of the unlocking assembly of the optical module in the direction of disengaging the optical module from the cage. In this way, the handle drives the unlocking member to slide in the slide groove along the arrangement direction of the circuit board mounting portion, the optical device mounting portion and the interface portion. The height of the end of the unlocking member facing away from the handle exposed from the surface of the circuit board mounting portion is greater than the height of the hook protruding from the surface of the circuit board mounting portion. In this way, the cage can be lifted by the end of the unlocking member facing away from the handle to disengage the cage from the hook. The cage no longer restricts the movement of the optical module in the direction of disengagement from the cage, and the optical module can be pulled out of the cage.

[0032] In one possible implementation of the present application, the unlocking assembly further includes a spring, the unlocking member includes a spring mounting slot, and the spring is mounted in the spring mounting slot. Furthermore, the slide slot is provided with a limiting post, which is inserted into the spring mounting slot. Along the arrangement direction of the circuit board mounting portion, the optical device mounting portion, and the interface portion, one end of the spring abuts the limiting post, while the other end of the spring abuts the wall of the spring mounting slot. Thus, when the handle of the unlocking assembly is pulled, the unlocking member compresses the spring, causing the spring to accumulate elastic force. After the handle is released, the unlocking member slides in the opposite direction within the slide slot under the elastic force of the spring, causing the end of the unlocking member facing away from the handle to be hidden again within the circuit board mounting portion, thereby resetting the unlocking member.

[0033] In one possible implementation of the present application, the optical module further includes a base plate, which covers the slot of the slide and is fixedly connected to the housing. This allows the base plate to confine the unlocking component to the slide, thereby improving the structural reliability of the optical module.

[0034] In a second aspect, the present application further provides an optical line terminal device, comprising a single board and the optical module of the first aspect, the optical module being electrically connected to the single board. Because the optical module provided in the first aspect includes two interfaces that can be connected to communication cables to receive two paths of light, the number of interfaces of the optical line terminal device can be doubled without increasing the number of optical modules, thereby enabling expansion and upgrading of the optical line terminal device while maintaining the same layout space of the optical line terminal device.

[0035] In a third aspect, the present application further provides an optical communication system, comprising an optical network unit (ONU) and an optical line terminal (OLT) according to the second aspect, wherein the OLT is connected to the ONU via a passive optical distribution network (PON). Because the OLT provided in the second aspect enables expansion and upgrades of the ONT while maintaining a fixed layout space, it facilitates expansion and upgrades of the optical communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is a schematic structural diagram of an optical communication system provided in an embodiment of the present application;

[0037] FIG2 is a simplified structural diagram of an optical module provided in an embodiment of the present application;

[0038] FIG3 is a schematic structural diagram of an optical module provided in an embodiment of the present application;

[0039] FIG4 is a Z-direction view of the optical module shown in FIG3 ;

[0040] FIG5 is a schematic diagram of a process of plugging a communication cable into a first interface according to an embodiment of the present application;

[0041] FIG6 is a schematic structural diagram of an optical module and a communication cable in a plugged-in state according to an embodiment of the present application;

[0042] FIG7 is a schematic diagram of the partial structure of the optical module at A shown in FIG3 ;

[0043] FIG8 is a BB cross-sectional view of the optical module shown in FIG7 ;

[0044] FIG9 is a C-direction view of the optical module shown in FIG7 ;

[0045] FIG10 is a top view of the optical module shown in FIG9 ;

[0046] FIG11 is a schematic structural diagram of a first buckle provided in an embodiment of the present application;

[0047] FIG12a is another schematic diagram of the process of plugging a communication cable and an optical module according to an embodiment of the present application;

[0048] FIG12b is another structural schematic diagram of a communication cable and an optical module in a plugged-in state provided by an embodiment of the present application;

[0049] FIG13 is an enlarged view of the local structure of the optical module at point A shown in FIG3 ;

[0050] FIG14 is a schematic structural diagram of an optical module provided in an embodiment of the present application from another angle;

[0051] FIG15 is an exploded view of the optical module shown in FIG14 ;

[0052] FIG16 is a schematic diagram of a partially assembled structure of the optical module shown in FIG15 ;

[0053] FIG17a is a schematic diagram of a structure in which an optical module provided by an embodiment of the present application is plugged into the front of a cage;

[0054] FIG17 b is a schematic diagram of the structure of the optical module and the cage provided in an embodiment of the present application after being plugged into place.

[0055] Reference Signs: 100 - optical line terminal equipment; 1001 - cage; 200 - optical network unit; 300 - passive optical distribution network device; 1 - optical module; 101 - housing; 1011 - interface portion; 10111 - interface; 10111a - first interface; 10111b - second interface; 10112a - first retaining wall; 10112b - second retaining wall; 10112c - third retaining wall; 10112d - fourth retaining wall; 10113 - partition; 101121 - first guide groove; 1011211 - first guide portion; 1011212 - second guide portion; 101122 - second guide groove; 1012 - optical device mounting portion; 1013 - first side cover; 10131 - first heat dissipation tooth; 10132 - first labyrinth shielding structure; 1014 - Second side cover; 10141 - Second labyrinth shielding structure; 1015 - Circuit board mounting portion; 10151 - Hook; 1016 - Slide; 10161 - Limiting column; 102 - First optical device; 1021 - First communication cable connector; 1022 - First tube; 103 - Second optical device; 1031 - Second communication cable connector; 1032 - Second tube; 104 - First elastic material layer; 105 - Second elastic material layer; 106 - First fastener; 107 - Third elastic material layer; 108 - First buckle; 1081 - First mounting portion; 10811 - First mounting hole; 1082 - First clamping portion; 10821 - First limiting protrusion; 109 - Unlocking assembly; 1091 - Unlocking member; 10911 - Spring mounting slot; 1092-handle; 1093-spring; 1010-base plate; 10101-label; 2-communication cable; 201-cable head; 2011-first guide key. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be understood as being limited to the embodiments set forth herein. The same figure marks in the figures represent the same or similar structures, and thus their repeated description will be omitted. The words expressing position and direction described in the embodiments of the present application are all explained with reference to the accompanying drawings as examples, but changes can be made as needed, and the changes made are all included in the scope of protection of the present application. The drawings in the embodiments of the present application are only used to illustrate the relative position relationship and do not represent the true proportion.

[0057] It should be noted that the following description sets forth specific details to facilitate understanding of the present application. However, the present application can be implemented in a variety of other ways than those described herein, and those skilled in the art may make similar generalizations without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0058] In order to facilitate understanding of the optical module, optical line terminal equipment and optical communication system provided by this application, the application scenarios thereof are first introduced below. With the development of communication technology, the application of using optical signals to realize signal transmission has become more and more extensive. Referring to Figure 1, Figure 1 is a structural schematic diagram of the optical communication system provided by an embodiment of the present application. The optical communication system may include an optical line terminal equipment 100 and an optical network unit 200, wherein the optical line terminal equipment 100 may include an optical module 1, and the optical module 1 may be connected to a passive optical distribution network device 300 via a communication cable. The passive optical distribution network device 300 can be used to distribute the light beam emitted by the optical module 1 to multiple optical network units 200, so that the optical line terminal equipment 100 is connected to the optical network unit 200 through the passive optical distribution network device 300.

[0059] It is understood that an optical communication system may include multiple optical line terminal devices 100, and optical signals can be exchanged between the optical line terminal devices 100 connected by communication cables. In addition, each optical line terminal device 100 may include one or more optical modules 1, which may be installed on a single board of the optical line terminal device 100.

[0060] Referring to Figure 2, a simplified structural diagram of an optical module provided in an embodiment of the present application is shown. The optical module 1 generally includes a housing 101, an optical device, and an optical module driver circuit. The optical device and the optical module driver circuit are housed in the housing 101, and the optical module driver circuit is connected to the optical device. The housing 101 includes an interface 10111 for connecting to a communication cable, and the optical device is connected to the communication cable via the interface 10111.

[0061] In optical module 1, the optical module driver circuit can provide electrical signals to the optical device, which can convert the electrical signals into optical signals. The optical signals can then be transmitted via a communication optical cable connected to interface 10111. Furthermore, the optical device can receive external optical signals through interface 10111, convert the received optical signals into electrical signals, and transmit them to the optical module driver circuit for processing.

[0062] Currently, an optical module 1 typically has only one interface 10111, and is therefore used only to receive one optical line. As customer demands for network transmission speed and capacity continue to increase, capacity expansion of optical line terminals (OLTs) requires the installation of more optical modules 1 to provide more interfaces 10111. However, a single board in an OLT can only support a limited number of optical modules 1, and the layout space of an OLT is typically limited, making capacity expansion and upgrades difficult.

[0063] In view of this, the optical module provided in the embodiment of the present application adopts a dual SC interface design, so that each optical module can receive two paths of light. This can double the number of interfaces of the optical line terminal device without increasing the number of optical modules, thereby enabling the expansion and upgrade of the optical line terminal device without changing the layout space of the optical line terminal device. The optical module provided in the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0064] 3 is a schematic diagram of the structure of an optical module 1 provided in an embodiment of the present application. The optical module 1 includes a housing 101, which includes an interface portion 1011. The interface portion 1011 is a portion of the optical module 1 used to connect to a communication cable.

[0065] When specifically configuring the interface portion 1011, reference may be made to FIG4 , which is a Z-axis view of the optical module 1 shown in FIG3 . The interface portion 1011 includes a first retaining wall 10112a, a second retaining wall 10112b, a third retaining wall 10112c, and a fourth retaining wall 10112d. The first retaining wall 10112a and the second retaining wall 10112b are disposed opposite each other, while the third retaining wall 10112c and the fourth retaining wall 10112d are disposed opposite each other. Furthermore, the first retaining wall 10112a, the second retaining wall 10112b, the third retaining wall 10112c, and the fourth retaining wall 10112d are sequentially connected, thereby enclosing an installation area, which may be exemplarily a rectangular installation area.

[0066] In the embodiment of the present application, for the convenience of description, the arrangement direction of the first retaining wall 10112a to the second retaining wall 10112b can be defined as the X direction, the arrangement direction of the third retaining wall 10112c to the fourth retaining wall 10112d can be defined as the Y direction, and the plug-in direction of the communication cable 2 and the optical module 1 can be defined as the Z direction.

[0067] 4 , in the optical module 1 provided in the present application, the interface portion 1011 may further include a partition 10113, which is located within the aforementioned rectangular installation area. The partition 10113 is located between the first retaining wall 10112a and the second retaining wall 10112b, and is connected to the third retaining wall 10112c and the fourth retaining wall 10112d, so that the partition 10113 divides the installation area enclosed by the first retaining wall 10112a, the second retaining wall 10112b, the third retaining wall 10112c, and the fourth retaining wall 10112d into two interfaces. Furthermore, the partition 10113 may be arranged parallel to the first retaining wall 10112a and the second retaining wall 10112b. If the aforementioned installation area is a rectangular installation area, the partition 10113 divides the rectangular installation area into two rectangular interfaces, both of which may be SC interfaces. In the embodiment of the present application, for the convenience of description, the above two interfaces are named as the first interface 10111a and the second interface 10111b respectively.

[0068] As shown in Figure 3, the first retaining wall 10112a has a first guide groove 101121. The notch of the first guide groove 101121 is located at the end of the first retaining wall 10112a. The notch of the first guide groove 101121 is oriented in the same direction as the first interface 10111a, and the first guide groove 101121 can extend in a direction parallel to the third retaining wall 10112c and the fourth retaining wall 10112d. That is, the first guide groove 101121 extends along the Z direction, so that the first guide groove 101121 can guide the connection between the communication cable and the first interface 10111a. For specific implementation, refer to Figure 5, which is a schematic diagram of the connection process between the communication cable 2 and the first interface 10111a provided in an embodiment of the present application. The cable head 201 of the communication cable 2 may be provided with a first guide key 2011, which may protrude from the surface of the cable head 201 and match the shape of the first guide groove 101121. For example, the first guide groove 101121 may be a linear groove, and the first guide key 2011 may be provided as a linear protrusion.

[0069] When the communication cable 2 is plugged into the first interface 10111a, the first guide key 2011 can be inserted into the first guide groove 101121 from the notch of the first guide groove 101121, and the first guide key 2011 can slide along the Z direction in the first guide groove 101121, thereby improving the convenience of plugging the communication cable 2 and the optical module 1.

[0070] 3 , the second retaining wall 10112b has a second guide groove 101122. The opening of the second guide groove 101122 is located at the end of the second retaining wall 10112b. Thus, the opening of the second guide groove 101122 is oriented in the same direction as the second interface 10111b, and the second guide groove 101122 also extends in a direction parallel to the third retaining wall 10112c and the fourth retaining wall 10112d. In other words, the second guide groove 101122 extends along the Z direction. Thus, the second guide groove 101122 can guide the connection between the communication cable 2 and the second interface 10111b. The connection process between the communication cable 2 and the second interface 10111b can also be seen in FIG5 , and will not be described in detail here.

[0071] In the optical module 1 provided in the embodiment of the present application, by respectively providing the first guide groove 101121 and the second guide groove 101122 on the first retaining wall 10112a and the second retaining wall 10112b disposed opposite each other, the size of the interface portion 1011 of the optical module 1 can be reduced, thereby facilitating a miniaturized design of the optical module 1. It will be understood that in the present application, by respectively providing the first guide groove 101121 and the second guide groove 101122 on the first retaining wall 10112a and the second retaining wall 10112b, a foolproof effect can be provided for the connection between the communication cable 2 and the optical module 1, thereby enabling quick connection between the corresponding interfaces of the communication cable 2 and the optical module 1.

[0072] Continuing with FIG. 4 , in the present application, along the X-direction, the width d1 of the first interface 10111a can be 7.45±0.05 mm, and the width d2 of the second interface 10111b can be 7.45±0.05 mm. Furthermore, along the Y-direction, the length L1 of the first interface 10111a can be 9.05±0.05 mm, and the length L2 of the second interface 10111b can be 9.05±0.05 mm. This allows the first interface 10111a and the second interface 10111b to mate and plug with the optical cable head 201 of the corresponding communication cable 2.

[0073] In the embodiment of the present application, the first interface 10111a and the second interface 10111b can be symmetrically arranged along the X direction, which is conducive to achieving a miniaturized design of the optical module 1. It is understandable that when the first interface 10111a and the second interface 10111b are symmetrically arranged along the X direction, the first guide groove 101121 and the second guide groove 101122 are also symmetrically arranged in this direction to meet the plug-in requirements of the communication cable 2 and the corresponding interface.

[0074] In addition, as shown in FIG4 , along the X direction, the thickness d3 of the partition 10113 may be 0.4 mm to 5 mm, and may be 0.5 mm, 0.8 mm, 1 mm or 1.5 mm, etc., so as to meet the miniaturization design requirements of the optical module 1 while ensuring the structural strength of the partition 10113, thereby improving the reliability of plugging and unplugging the optical module 1 and the communication cable 2.

[0075] Referring to Figure 6, Figure 6 is a structural schematic diagram of the optical module 1 and the communication cable 2 provided in an embodiment of the present application in a plug-in state. The optical module 1 provided in an embodiment of the present application includes two interfaces, each of which can be plugged into a corresponding communication cable 2, so that one optical module 1 can receive two paths of light. Since the two interfaces of the optical module 1 are separated by a partition 10113, the two communication cables 2 do not interfere with each other during the plugging and unplugging process of the corresponding interfaces of the optical module 1, which is conducive to improving the reliability of the plugging of the corresponding interfaces of the communication cable 2 and the optical module 1, thereby improving the stability of the optical signal transmission between the communication cable 2 and the optical module 1.

[0076] In order to realize the transmission function of the optical signal, the optical module 1 also includes an optical device. Since the optical module 1 provided in the embodiment of the present application includes two interfaces, the optical module 1 may include two optical devices, namely a first optical device 102 and a second optical device 103, and the two optical devices and the two interfaces can be set in a one-to-one correspondence. In specific implementation, reference may be made to Figure 7, which is a schematic diagram of the partial structure of point A of the optical module shown in Figure 3. The housing 101 of the optical module 1 also includes an optical device mounting portion 1012, and the optical device mounting portion 1012 is located on the side of the interface portion 1011 away from the notch of the first guide groove 101121 and the notch of the second guide groove 101122, the first optical device 102 and the second optical device 103 are installed on the optical device mounting portion 1012, and the first optical device 102 and the second optical device 103 are arranged along the X direction.

[0077] In addition, referring to Figure 8, Figure 8 is a BB cross-sectional view of the optical module shown in Figure 7. The first optical device 102 includes a first communication cable connector 1021, which is used to connect to the communication cable 2 shown in Figure 5 to achieve signal transmission between the first optical device 102 and the communication cable 2. To facilitate the connection between the first communication cable connector 1021 and the communication cable 2, as shown in Figure 8, the first communication cable connector 1021 can be inserted into the first interface 10111a of the interface portion 1011 by the optical device mounting portion 1012.

[0078] Similarly, the second optical device 103 includes a second communication cable connector 1031 , which is inserted into the second interface 10111b of the interface portion 1011 by the optical device mounting portion 1012 to facilitate connection between the second communication cable connector 1031 and the communication cable 2 .

[0079] As shown in Figure 8, in the optical module 1 provided in the embodiment of the present application, the hole center distance H between the first communication cable connector 1021 and the second communication cable connector 1031 can be 7.4mm~12mm, and can be 7.5mm, 7.7mm, 8mm or 8.5mm, etc., so that the volume of the optical module 1 can be smaller, which is conducive to the miniaturization design of the optical module 1.

[0080] Continuing with FIG8 , the housing of the optical module 1 provided in this embodiment of the present application further includes a first side cover 1013 and a second side cover 1014, with the first side cover 1013 and the second side cover 1014 being disposed opposite each other. Furthermore, referring to FIG3 , the first side cover 1013 and the first retaining wall 10112a may be disposed on the same side, with the first side cover 1013 abutting against the end of the notch of the first retaining wall 10112a that faces away from the first guide groove 101121. Similarly, the second side cover 1014 and the second retaining wall 10112b are disposed on the same side, with the second side cover 1014 abutting against the end of the notch of the second retaining wall 10112b that faces away from the second guide groove 101122.

[0081] It can be understood that in the optical module 1 provided in the embodiment of the present application, the first optical device 102 and the second optical device 103 are arranged in a direction from the first side cover plate 1013 to the second side cover plate 1014, and the first optical device 102 is disposed adjacent to the first side cover plate 1013, and the second optical device 103 is disposed adjacent to the second side cover plate 1014. Continuing with reference to FIG8 , in the present application, the distance between the end surface of the first optical device 102 facing the first side cover plate 1013 and the first side cover plate 1013 may be greater than 0 and less than or equal to 3 mm. In addition, a first elastic material layer 104 may be disposed between the end surface of the first optical device 102 facing the first side cover plate 1013 and the first side cover plate 1013, and the first optical device 102 and the first side cover plate 1013 may squeeze the first elastic material layer 104. In this way, effective contact between the first optical device 102 and the first side cover plate 1013 can be achieved, so that the heat generated by the first optical device 102 can be transferred to the first side cover plate 1013 through the first elastic material layer 104, so as to achieve heat dissipation for the first optical device 102 through the first side cover plate 1013.

[0082] In the present application, the material of the first elastic material layer 104 is not limited. Examples thereof include a thermal pad or an absorbing material layer, which can be selected based on the heat dissipation requirements of the first optical device 102. In addition, to improve the heat dissipation performance of the first side cover 1013, the material of the first side cover 1013 can be plastic, zinc alloy, copper alloy, etc.

[0083] 7 , the first side cover 1013 may further be provided with first heat dissipation teeth 10131 to further enhance the heat dissipation performance of the first side cover 1013. The extension direction of the first heat dissipation teeth 10131 may be specifically configured according to the specific application scenario. For example, the first heat dissipation teeth 10131 may be parallel to the flow direction of the air in the air duct where the optical module 1 is located.

[0084] As shown in FIG8 , the distance between the end surface of the second optical device 103 facing the second side cover plate 1014 and the second side cover plate 1014 may also be greater than 0 and less than or equal to 3 mm, and a second elastic material layer 105 may be further provided between the end surface of the second optical device 103 facing the second side cover plate 1014 and the second side cover plate 1014. The second optical device 103 and the second side cover plate 1014 may squeeze the second elastic material layer 105. In this way, heat generated by the second optical device 103 can be transferred to the second side cover plate 1014 through the second elastic material layer 105, thereby dissipating heat from the second optical device 103 through the second side cover plate 1014.

[0085] The second elastic material layer 105 can also be made of a thermally conductive pad or a wave-absorbing material layer, and the material of the second elastic material layer 105 can be the same as or different from that of the first elastic material layer 104. Furthermore, the second side cover 1014 can be made of plastic, zinc alloy, or copper alloy to enhance the heat dissipation performance of the second side cover 1014. Furthermore, the second side cover 1014 can be provided with second heat dissipation teeth, which can be configured similarly to the first heat dissipation teeth 10131 and are not described in detail here.

[0086] It can be understood that, by adopting the design of the optical module 1 provided in the present application, the first optical device 102 and the second optical device 103 can be respectively installed into the optical device mounting portion 1012 from both sides of the housing 101 arranged along the X direction, and then the first side cover plate 1013 and the second side cover plate 1014 are installed.

[0087] In the present application, the first side cover 1013 can be locked to the optical device mounting portion 1012 via a plurality of first fasteners 106. For a specific implementation, reference can be made to FIG9 , which is a C-view of the optical module 1 shown in FIG7 , and the first side cover 1013 is omitted in FIG9 . Referring to both FIG7 and FIG9 , the plurality of first fasteners 106 used to connect the first side cover 1013 to the optical device mounting portion 1012 can be distributed around the circumference of the first optical device 102. Specifically, at least one first fastener 106 can be locked to an end of the optical device mounting portion 1012 that is close to the interface portion 1011, and at least one first fastener 106 can be locked to an end of the optical device mounting portion 1012 that is away from the interface portion 1011. In this way, the first side cover 1013 can effectively constrain the movement of the first optical device 102 along the X direction, which can effectively prevent the first optical device 102 from shaking during the plugging and unplugging of the communication cable 2 and the optical module 1, thereby helping to improve the stability of the first optical device 102 in transmitting optical signals.

[0088] The second side cover 1014 can be configured similarly to the first side cover 1013. Specifically, the second side cover 1014 can be locked to the optical device mounting portion 1012 via a plurality of second fasteners. At least one second fastener is locked to the end of the optical device mounting portion 1012 near the interface portion 1011, and at least one second fastener is locked to the end of the optical device mounting portion 1012 facing away from the interface portion 1011. This effectively constrains the movement of the second optical device 103 along the X-direction by the second side cover 1014. This effectively prevents the second optical device 103 from shaking during insertion and removal of the communication cable 2 and the optical module 1, thereby improving the stability of the second optical device 103 in transmitting optical signals.

[0089] Continuing with reference to Figures 8 and 9, the first optical device 102 may further include a first tube body 1022, and the first communication cable connector 1021 is connected to one end of the first tube body 1022. In addition, referring to Figure 10, Figure 10 is a top view of the optical module 1 shown in Figure 9, that is, an X-direction view of the optical module 1. In the present application, a third elastic material layer 107 is further provided between the connection between the first communication cable connector 1021 and the first tube body 1022 and the side wall of the optical device mounting portion 1012, and the connection between the first communication cable connector 1021 and the first tube body 1022 and the side wall of the optical device mounting portion 1012 squeezes the third elastic material layer 107. In this way, effective overlap between the first optical device 102 and the optical device mounting portion 1012 can be achieved, which can improve the structural reliability of the first optical device 102 while also forming a Faraday cage at the optical device mounting portion 1012, thereby effectively reducing the leakage of noise generated by the first optical device 102.

[0090] In the optical module 1 provided in the embodiment of the present application, other possible methods can also be used to reduce the leakage of noise generated by the first optical device 102. For example, as shown in Figure 7, the surface of the first side cover 1013 facing the first optical device 102 can also be provided with a first maze shielding structure 10132. The first maze shielding structure 10132 can be understood as a retaining wall formed on the first side cover 1013. Then, in the process of noise being transmitted to the outside, the first maze shielding structure 10132 can block it to reduce the transmission energy of the noise, thereby playing a role in shielding the leakage of noise.

[0091] Similarly, referring to FIG8 , the second optical device 103 may further include a second tube body 1032, and the second communication cable connector 1031 is connected to one end of the second tube body 1032. In addition, a fourth elastic material layer (not shown in FIG8 ) is provided between the connection between the second communication cable connector 1031 and the second tube body 1032 and the side wall of the optical device mounting portion 1012, and the fourth elastic material layer is squeezed between the connection between the second communication cable connector 1031 and the second tube body 1032 and the side wall of the optical device mounting portion 1012. In this way, the second optical device 103 can be effectively overlapped with the optical device mounting portion 1012, which can improve the structural reliability of the second optical device 103 while forming a Faraday cage at the optical device mounting portion 1012, thereby effectively reducing the leakage of noise generated by the second optical device 103.

[0092] In addition, as shown in Figure 7, the surface of the second side cover plate 1014 facing the second optical device 103 may also be provided with a second maze shielding structure 10141, wherein the second maze shielding structure 10141 of the second side cover plate 1014 can be set with reference to the first maze shielding structure 10132 of the first side cover plate 1013, and will not be described in detail here.

[0093] Continuing with reference to FIG. 10 , the optical module 1 provided in the embodiment of the present application further includes a first clip 108 , which is mounted on the first interface 10111a. Furthermore, referring to FIG. 11 , FIG. 11 is a schematic structural diagram of the first clip 108 provided in the embodiment of the present application. The first clip 108 may include a first mounting portion 1081 and two first clamping portions 1082 . Referring to FIG. 10 and FIG. 11 together, the first mounting portion 1081 may be connected to the side wall of the interface portion 1011 , and the first mounting portion 1081 may be disposed at the junction of the interface portion 1011 and the optical device mounting portion 1012 . It can be understood that the first mounting portion 1081 may include a first mounting hole 10811, which may be coaxially arranged with the first communication cable connector 1021. In addition, the aperture of the first mounting hole 10811 is greater than or equal to the outer diameter of the first communication cable connector 1021, so that the first communication cable connector 1021 can extend from the first mounting hole 10811 to the first interface 10111a.

[0094] Continuing with Figures 10 and 11 , the two first engaging portions 1082 are located on a side of the first mounting portion 1081 facing away from the optical device mounting portion 1012. The first mounting hole 10811 is located between the two first engaging portions 1082, and the two first engaging portions 1082 are aligned along the Y direction. Furthermore, a first limiting protrusion 10821 is provided on the end of each first engaging portion 1082 facing away from the first mounting portion 1081, and the first limiting protrusions 10821 of the two first engaging portions 1082 are disposed opposite each other.

[0095] Referring to Figure 12a, which is another schematic diagram illustrating the process of plugging a communication cable into an optical module according to an embodiment of the present application, as the cable head 201 of the communication cable 2 is inserted into the first interface 10111a along the Z direction, the cable head 201 of the communication cable 2 squeezes the two first engaging portions 1082 of the first buckle 108, causing the two first engaging portions 1082 of the first buckle 108 to move in opposite directions.

[0096] Reference may be made to Figure 12b, which is a structural schematic diagram of the communication cable 2 and the optical module 1 provided in an embodiment of the present application in a plugged-in state. When the cable head 201 of the communication cable 2 is plugged into place with the first communication cable connector 1021, the two first clamping portions 1082 move toward each other and reset, and the first limiting protrusions 10821 of the two first clamping portions 1082 can limit the movement of the cable head 201 of the communication cable 2 in a direction opposite to the Z direction, thereby preventing the cable head 201 of the communication cable 2 from being dislodged from the first interface 10111a, thereby improving the reliability of the plugging of the cable head 201 of the communication cable 2 with the first interface 10111a.

[0097] When it is necessary to pull out the cable head 201 of the communication cable 2 from the first interface 10111a, a pulling force can be applied to the cable head 201 of the communication cable 2 in a direction opposite to the Z direction, so that the cable head 201 of the communication cable 2 squeezes the two first clamping parts 1082 of the first buckle 108, thereby causing the two first clamping parts 1082 to move in opposite directions, so that the first limiting protrusions 10821 of the two first clamping parts 1082 avoid the cable head 201 of the communication cable 2, thereby achieving the purpose of pulling out the cable head 201 of the communication cable 2.

[0098] Additionally, it is understood that the optical module 1 may further include a second clip, which is mounted on the second interface 10111b shown in Figure 8. In this application, the second clip can be configured with reference to the first clip 108. Simply put, the second clip can include a second mounting portion and two second clamping portions, with the second mounting portion connected to the side wall of the interface portion 1011. The second mounting portion includes a second mounting hole, which is coaxially arranged with the second communication cable connector 1031. The aperture of the second mounting hole is greater than or equal to the outer diameter of the second communication cable connector 1031, so that the second communication cable connector 1031 can extend from the second mounting hole to the second interface 10111b. The two second clamping portions are located on the side of the second mounting portion facing away from the optical device mounting portion 1012. The second mounting hole is located between the two second clamping portions. The two second clamping portions are arranged along the Y direction, and each second clamping portion is provided with a second stopper protrusion at the end facing away from the second mounting portion. The second stopper protrusions of the two second clamping portions are arranged opposite each other. Other specific configurations and applications of the second clamping portion may refer to the first clamping portion 1082 and will not be described in detail here.

[0099] 7 and 9 , it can be understood that, in the present application, the first side cover 1013 can also cover the first clip 108, which facilitates the installation of the first clip 108 and the housing 101. Furthermore, since the first clip 108 is provided on the interface portion 1011, the first side cover 1013 can simultaneously cover the interface portion 1011 and the optical device mounting portion 1012, which can also increase the area of ​​the first side cover 1013, thereby improving the heat dissipation performance of the first side cover 1013.

[0100] It is worth mentioning that, in the optical module 1 provided in the embodiment of the present application, the first side cover 1013 can extend to the interface portion 1011, and the first side cover 1013 abuts the first retaining wall 10112a. Therefore, in order to achieve reliable insertion of the cable head 201 of the communication cable 2 and the corresponding communication cable connector of the optical module 1, a portion of the first guide groove 101121 can be provided on the first side cover 1013. For a specific implementation, reference can be made to FIG13, which is an enlarged view of the partial structure at point A of the optical module shown in FIG3. The first guide groove 101121 can include a first guide portion 1011211 and a second guide portion 1011212. The first guide portion 1011211 is provided on the first retaining wall 10112a, and the second guide portion 1011212 is provided on the first side cover 1013. Along the Z direction, the first guide portion 1011211 penetrates the first retaining wall 10112a, and the first guide portion 1011211 is arranged opposite the second guide portion 1011212. This allows the first guide groove 101121 to provide a sufficiently long guide length for plugging the cable head 201 of the communication cable 2 into the optical module 1, thereby improving the convenience of plugging the communication cable 2 into the optical module 1.

[0101] In addition, referring to Figure 13, in the present application, along the Y direction, the width of the second guide portion 1011212 can be made greater than or equal to the width of the first guide portion 1011211, so that the second guide portion 1011212 can play a role in avoiding the cable head 201 of the communication cable 2, thereby absorbing the assembly tolerance between the cable head 201 of the communication cable 2 and the first interface 10111a of the optical module 1.

[0102] Similarly, in the optical module 1 provided in the embodiment of the present application, a portion of the second guide groove may also be provided on the second side cover. Specifically, along the Z direction, the second guide groove may include a third guide portion and a fourth guide portion, wherein the third guide portion extends through the second retaining wall, and the fourth guide portion is provided on the second side cover, and the third guide portion and the fourth guide portion are arranged opposite each other. In addition, along the Y direction, the width of the fourth guide portion is greater than or equal to the width of the third guide portion, so that the fourth guide portion can play a role in avoiding the cable head 201 of the communication cable 2, thereby absorbing the assembly tolerance between the cable head 201 of the communication cable 2 and the second interface 10111b of the optical module 1.

[0103] It is understood that in order to enable the optical module 1 to process the optical signals received by the first optical device 102 and the second optical device 103, the optical module 1 can also be provided with a circuit board, and the optical module driving circuit can be provided on the circuit board. Then, the first optical device 102 and the second optical device 103 can be electrically connected to the optical module driving circuit via the circuit board, so that the first optical device 102 and the second optical device 103 can transmit the optical signals they receive to the optical module driving circuit for processing, or the optical module driving circuit can provide electrical signals to the first optical device 102 and the second optical device 103. Referring to Figure 14, Figure 14 is a structural schematic diagram of the optical module 1 provided in an embodiment of the present application from another angle. The housing 101 of the optical module 1 also includes a circuit board mounting portion 1015, and the circuit board of the optical module 1 can be mounted on the circuit board mounting portion 1015.

[0104] As shown in FIG14 , in the present application, the optical device mounting portion 1012 is located between the circuit board mounting portion 1015 and the interface portion 1011, and the interface portion 1011, the optical device mounting portion 1012, and the circuit board mounting portion 1015 are arranged sequentially along the Z direction. It is worth mentioning that in the present application, the interface portion 1011, the optical device mounting portion 1012, and the circuit board mounting portion 1015 of the housing 101 can be an integrally formed structure to enhance the integration level of the optical module 1.

[0105] In addition, referring to Figure 15, which is an exploded view of the optical module 1 shown in Figure 14, the housing 101 of the optical module 1 further includes a slide groove 1016, the notch of which is opened along the Y direction. The slide groove 1016 extends along the Z direction, and a portion of the slide groove 1016 is located at the circuit board mounting portion.

[0106] Continuing with FIG15 , the optical module 1 further includes an unlocking assembly 109, which includes an unlocking member 1091 and a handle 1092. The unlocking member 1091 is mounted in the slide groove 1016, and the handle 1092 is connected to the end of the unlocking member 1091 facing away from the circuit board mounting portion 1015, with a portion of the handle 1092 located outside the housing 101. Furthermore, FIG16 is a schematic diagram of the partially assembled structure of the optical module 1 shown in FIG15 . The end of the unlocking member 1091 facing away from the handle 1092 can be located on the circuit board mounting portion 1015. In the state shown in FIG16 , the end of the unlocking member 1091 facing away from the handle 1092 can be lower than the surface of the circuit board mounting portion 1015, that is, the end of the unlocking member 1091 facing away from the handle 1092 is hidden within the circuit board mounting portion 1015.

[0107] 16 , the circuit board mounting portion 1015 may also be provided with a hook 10151 , and the hook 10151 and the slide groove 1016 are located on the same side of the circuit board mounting portion 1015 , and the direction in which the hook 10151 protrudes from the surface of the circuit board mounting portion 1015 is the same as the direction of the notch of the slide groove 1016 .

[0108] It is worth mentioning that when the optical module 1 is used in an optical line terminal device, referring to Figure 17a, Figure 17a shows a schematic diagram of the structure of the optical module 1 before being inserted into the cage 1001 according to an embodiment of the present application. The circuit board mounting portion 1015 of the optical module 1 can be inserted into the cage 1001 of the single board of the optical line terminal device along the Z direction, thereby achieving an electrical connection between the optical module 1 and the single board. As shown in Figure 17a, before the optical module 1 is inserted into the cage 1001, the cage 1001 is located on the side of the hook 10151 facing away from the optical device mounting portion 1012.

[0109] In addition, referring to Figure 17b, Figure 17b is a schematic diagram of the structure of the optical module 1 and the cage 1001 after being plugged into place according to an embodiment of the present application. After the optical module 1 and the cage 1001 are plugged into place, the hook 10151 of the circuit board mounting portion 1015 can be engaged with the cage 1001, and the cage 1001 can restrict the movement of the optical module 1 in a direction opposite to the Z direction, that is, restrict the movement of the optical module 1 in a direction away from the cage 1001, thereby preventing the optical module 1 from falling out of the cage 1001, thereby achieving a reliable plug-in connection between the optical module 1 and the cage 1001.

[0110] When it is necessary to pull out the optical module 1 plugged into the cage 1001, a pulling force can be applied to the handle 1092 of the unlocking assembly 109 of the optical module 1 in the direction of disengaging the optical module 1 from the cage, so that the handle 1092 drives the unlocking member 1091 to slide in the slide groove 1016 in the direction opposite to the Z direction, so that the height of the end of the unlocking member 1091 away from the handle 1092 exposed from the surface of the circuit board mounting portion 1015 is greater than the height of the hook 10151 protruding from the surface of the circuit board mounting portion 1015. In this way, the cage 1001 can be lifted by the end of the unlocking member 1091 away from the handle 1092 to disengage the cage 1001 from the hook 10151. Then, the cage 1001 no longer restricts the movement of the optical module 1 in the direction of disengagement from the cage 1001, and the optical module 1 can be pulled out of the cage 1001.

[0111] Since, in the optical module 1 provided in the embodiment of the present application, the unlocking assembly 109 and the two interfaces of the optical module 1 are arranged in a stacked manner, and the extension direction of the handle 1092 of the unlocking assembly 109 is the same as the orientation of the interface of the optical module 1, the handle 1092 can avoid the interface of the optical module 1. Therefore, the arrangement of the unlocking assembly 109 will not interfere with the plugging and unplugging of the communication cable and the optical module 1, and the plugging and unplugging of the communication cable and the optical module 1 will not affect the operation of the unlocking assembly 109. In this way, when unlocking the optical module 1 from the cage, there is no need to first unplug the communication cable plugged into the optical module 1, thereby achieving decoupling of the plugging and unplugging process of the optical module 1 from the cage and the plugging and unplugging process of the communication cable and the optical module 1, thereby improving the convenience of using the optical module 1.

[0112] Continuing with reference to FIG15 , the unlocking assembly 109 further includes a spring 1093, and the unlocking member 1091 includes a spring mounting groove 10911, wherein the spring 1093 is mounted in the spring mounting groove 10911. Furthermore, a limiting post 10161 may be disposed within the slide groove 1016. Referring to both FIG15 and FIG16 , the limiting post 10161 may be inserted into the spring mounting groove 10911. Along the Z direction, one end of the spring 1093 abuts against the limiting post 10161, and the other end of the spring 1093 abuts against the wall of the spring mounting groove 10911. In this way, in the process of pulling the handle 1092 of the unlocking assembly 109, the unlocking member 1091 can compress the spring 1093 so that the spring 1093 accumulates elastic force. After releasing the handle 1092, the unlocking member 1091 can slide in the direction opposite to the Z direction in the slide groove 1016 under the action of the elastic force of the spring 1093, so that the end of the unlocking member 1091 facing away from the handle 1092 is hidden again in the circuit board mounting portion 1015 to achieve the reset of the unlocking member 1091.

[0113] In the present application, in order to restrict the unlocking assembly 109 to the slide groove 1016, the optical module 1 may further include a base plate 1010. Referring to FIG15 , the base plate 1010 covers the notch of the slide groove 1016 and is fixedly connected to the housing 101. The base plate 1010 and the housing 101 may be fixed by threaded connection, riveting, bonding, or welding, etc., which is not limited in the present application.

[0114] In addition, the base plate 1010 may also be provided with a label 10101. In the optical module 1 shown in FIG15 , the base plate 1010 may only cover the portion of the slide groove 1016 located at the interface portion 1011 and the optical device mounting portion 1012. This prevents the structure inside the cage from scratching the label 10101 during insertion and removal of the optical module 1 from the cage, thereby reducing the risk of damage to the label 10101. It is worth mentioning that, to facilitate the use of the optical module 1, arrows or numbers or other markings may be formed on the handle 1092 of the unlocking assembly 109 through a molding process or other process to indicate the unlocking direction of the optical module 1 and the optical signal transmission of the optical module 1.

[0115] The optical module 1 provided in the embodiment of the present application divides the installation area of ​​the interface portion 1011 into two interfaces by a partition 10113, so that the optical module 1 can receive two paths of light, which is conducive to the expansion of the optical module 1. In addition, the optical module 1 can be applied to the optical communication system shown in Figure 1. Specifically, the optical line terminal device 100 can include the above-mentioned optical module 1, or the optical network unit 200 can include the above-mentioned optical module 1. In the optical communication system provided in the present application, the optical line terminal device 100 is connected to multiple optical network units 200 in a point-to-multipoint manner through a passive optical distribution network device 300. The optical line terminal device 100 and the optical network unit 200 can communicate using a TDM mechanism, a WDM mechanism, or a TDM / WDM hybrid mechanism. Among them, the direction from the optical line terminal device 100 to the optical network unit 200 is defined as the downlink direction, and the direction from the optical network unit 200 to the optical line terminal device 100 is defined as the uplink direction.

[0116] The passive optical communication system can be a communication network that does not require any active devices to achieve data distribution between the optical line terminal device 100 and the optical network unit 200. In a specific embodiment, the data distribution between the optical line terminal device 100 and the optical network unit 200 can be achieved through a passive optical distribution network device 300. The passive optical communication system can be an asynchronous transfer mode passive optical network (ATM PON) system or a broadband passive optical network (BPON) system defined by the ITU-T G.983 standard, a gigabit passive optical network (GPON) system defined by the ITU-T G.984 series of standards, an Ethernet passive optical network (EPON) defined by the IEEE 802.3ah standard, a wavelength division multiplexing passive optical network (WDM PON) system, or a next-generation passive optical network (NGAPON system, such as the XGPON system defined by the ITU-T G.987 series of standards, the 10G EPON system defined by the IEEE 802.3av standard, a TDM / WDM hybrid PON system, etc.). The entire contents of various passive optical communication systems defined in the above standards are incorporated into this application document by reference.

[0117] The optical line terminal device 100 is usually located in a central location (for example, a central office (CO)), which can centrally manage multiple optical network units 200. The optical line terminal device 100 can act as a medium between the optical network unit 200 and the upper network (not shown in the figure), forwarding data received from the upper network as downlink data to the optical network unit 200, and forwarding uplink data received from the optical network unit 200 to the upper network. The specific structural configuration of the optical line terminal device 100 may vary depending on the specific type of passive optical communication system. In one embodiment, the optical line terminal device 100 includes an optical module 1 and a data processing module (not shown in the figure). The optical module 1 can convert the downlink data processed by the data processing module into a downlink optical signal, and send the downlink optical signal to the optical network unit 200 through the passive optical distribution network device 300, and receive the uplink optical signal sent by the optical network unit 200 through the passive optical distribution network device 300, and convert the uplink data signal into an electrical signal and provide it to the data processing module for processing.

[0118] The optical network unit 200 can be distributed and arranged at a user-side location (such as a user premises). The optical network unit 200 can be a network device used to communicate with the optical line terminal device 100 and the user. Specifically, the optical network unit 200 can act as an intermediary between the optical line terminal device 100 and the user. For example, the optical network unit 200 can forward downlink data received from the optical line terminal device 100 to the user, and forward data received from the user as uplink data to the optical line terminal device 100. The specific structural configuration of the optical network unit 200 may vary depending on the specific type of passive optical communication system. In one embodiment, the optical network unit 200 includes an optical module 1, which is used to receive downlink data signals sent by the optical line terminal device 100 through the passive optical distribution network device 300, and to send uplink data signals to the optical line terminal device 100 through the passive optical distribution network device 300.

[0119] The passive optical distribution network device 300 can be a data distribution system, which may include optical fibers, optical couplers, optical multiplexers / demultiplexers, optical splitters, and / or other devices. In one embodiment, the optical fibers, optical couplers, optical multiplexers / demultiplexers, optical splitters, and / or other devices can be passive optical devices. Specifically, the optical fibers, optical couplers, optical multiplexers / demultiplexers, optical splitters, and / or other devices can be devices that do not require power to distribute data signals between the optical line terminal device 100 and the optical network unit 200. In addition, in other embodiments, the passive optical distribution network device 300 can also include one or more processing devices, such as optical amplifiers or relay devices. In the branching structure shown in Figure 1, the passive optical distribution network device 300 can specifically extend from the optical line terminal device 100 to multiple optical network units 200, but can also be configured into any other point-to-multipoint structure.

[0120] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A dual SC interface optical module, characterized in that: The invention comprises a shell, wherein the shell comprises an interface portion, wherein the interface portion comprises a first retaining wall, a second retaining wall, a third retaining wall, a fourth retaining wall and a partition, wherein: The first retaining wall is arranged opposite to the second retaining wall, the third retaining wall is arranged opposite to the fourth retaining wall, and the first retaining wall, the third retaining wall, the second retaining wall and the fourth retaining wall are sequentially connected to form a rectangular installation area; The partition is located in the rectangular installation area, the partition is located between the first baffle wall and the second baffle wall, the partition is arranged parallel to the first baffle wall and the second baffle wall, and the partition is connected to the third baffle wall and the fourth baffle wall; the partition divides the rectangular installation area into a first interface and a second interface; The first retaining wall has a first guide groove, the notch of the first guide groove is located at the end of the first retaining wall, and the first guide groove extends in a direction parallel to the third retaining wall and the fourth retaining wall; the second retaining wall has a second guide groove, the notch of the second guide groove is located at the end of the second retaining wall, and the second guide groove extends in a direction parallel to the third retaining wall and the fourth retaining wall.

2. The optical module according to claim 1, wherein: The optical module further includes a first optical device and a second optical device, the first optical device and the second optical device are arranged along a direction from the first retaining wall to the second retaining wall, the first optical device includes a first communication cable connector, and the second optical device includes a second communication cable connector; The housing also includes an optical device mounting portion, which is located on a side of the interface portion away from the notch of the first guide groove and the notch of the second guide groove; the first optical device and the second optical device are installed on the optical device mounting portion, and the first communication cable connector is plugged into the first interface, and the second communication cable connector is plugged into the second interface.

3. The optical module according to claim 2, characterized in that The shell also includes a first side cover plate and a second side cover plate, the first side cover plate is arranged opposite to the second side cover plate, the first side cover plate is arranged on the same side as the first baffle wall, and the first side cover plate abuts against the end of the notch of the first baffle wall facing away from the first guide groove, the second side cover plate is arranged on the same side as the second baffle wall, and the second side cover plate abuts against the end of the notch of the second baffle wall facing away from the first guide groove.

4. The optical module according to claim 3, characterized in that: The first side cover plate is locked to the optical device mounting portion by a plurality of first fasteners, and the plurality of first fasteners are distributed around the circumference of the first optical device; the second side cover plate is locked to the optical device mounting portion by a plurality of second fasteners, and the plurality of second fasteners are distributed around the circumference of the second optical device.

5. The optical module according to claim 4, characterized in that: At least one of the first fasteners is locked with an end of the optical device mounting portion close to the interface portion, and at least one of the first fasteners is locked with an end of the optical device mounting portion away from the interface portion; At least one of the second fasteners is locked with the end of the optical device mounting portion close to the interface portion, and at least one of the second fasteners is locked with the end of the optical device mounting portion away from the interface portion.

6. The optical module according to any one of claims 3 to 5, characterized in that: A first elastic material layer is disposed between the end surface of the first optical device facing the first side cover plate and the first side cover plate, and the first optical device and the first side cover plate squeeze the first elastic material layer; A second elastic material layer is disposed between the end surface of the second optical device facing the second side cover plate and the second side cover plate, and the second optical device and the second side cover plate press the second elastic material layer.

7. The optical module according to any one of claims 3 to 6, characterized in that: The first side cover plate is made of plastic, zinc alloy or copper alloy; the second side cover plate is made of plastic, zinc alloy or copper alloy.

8. The optical module according to any one of claims 3 to 7, characterized in that: The first side cover plate is provided with first heat dissipation teeth, and the second side cover plate is provided with second heat dissipation teeth.

9. The optical module according to any one of claims 2 to 8, characterized in that: The first optical device further comprises a first tube body, the first communication cable connector is connected to one end of the first tube body, a third elastic material layer is provided between the connection between the first optical communication cable connector and the first tube body and the side wall of the optical device installation portion, and the connection between the first communication cable connector and the first tube body and the side wall of the optical device installation portion squeeze the third elastic material layer; The second optical device also includes a second tube body, the second communication cable connector is connected to one end of the second tube body, a fourth elastic material layer is arranged between the connection between the second communication cable connector and the second tube body and the side wall of the optical device mounting part, and the fourth elastic material layer is squeezed by the connection between the second communication cable connector and the second tube body and the side wall of the optical device mounting part.

10. The optical module according to any one of claims 2 to 9, characterized in that: Along the direction from the first baffle wall to the first side cover plate, the first guide groove includes a first guide portion and a second guide portion, the first guide portion passes through the first baffle wall, the second guide portion is arranged on the first side cover plate, and the first guide portion is arranged opposite to the second guide portion; Along the direction from the second baffle wall to the second side cover plate, the second guide groove includes a third guide portion and a fourth guide portion, the third guide portion passes through the second baffle wall, the fourth guide portion is arranged on the second side cover plate, and the third guide portion is arranged opposite to the fourth guide portion.

11. The optical module according to any one of claims 2 to 10, characterized in that: The optical module also includes a first clip and a second clip, the first clip is installed on the first interface, the first clip includes a first mounting portion and two first clamping portions, the first mounting portion is connected to the side wall of the interface portion, the first mounting portion includes a first mounting hole, the first mounting hole is coaxially arranged with the first communication cable connector, and the aperture of the first mounting hole is greater than or equal to the outer diameter of the first communication cable connector, and the first communication cable connector extends from the first mounting hole to the first interface; the two first clamping portions are located on a side of the first mounting portion away from the optical device mounting portion, the first mounting hole is located between the two first clamping portions, the two first clamping portions are arranged in a direction from the third retaining wall to the fourth retaining wall, and the end of each first clamping portion away from the first mounting portion is provided with a first limiting protrusion, and the first limiting protrusions of the two first clamping portions are arranged opposite to each other; The second clip is installed on the second interface, the second clip includes a second mounting portion and two second clamping portions, the second mounting portion is connected to the side wall of the interface portion, the second mounting portion includes a second mounting hole, the second mounting hole is coaxially arranged with the second communication cable connector, and the aperture of the second mounting hole is greater than or equal to the outer diameter of the second communication cable connector, and the second communication cable connector extends from the second mounting hole to the second interface; the two second clamping portions are located on the side of the second mounting portion away from the optical device mounting portion, the second mounting hole is located between the two second clamping portions, the two second clamping portions are arranged in the direction from the third barrier wall to the fourth barrier wall, and a second limiting protrusion is provided at the end of each second clamping portion away from the second mounting portion, and the second limiting protrusions of the two second clamping portions are arranged opposite to each other.

12. The optical module according to any one of claims 2 to 11, characterized in that: Along the direction from the first retaining wall to the second retaining wall, the hole center distance between the first communication cable connector and the second communication cable connector is 7.4 mm to 12 mm.

13. The optical module according to any one of claims 1 to 12, characterized in that: Along the direction from the first retaining wall to the second retaining wall, the first interface and the second interface are symmetrically arranged.

14. The optical module according to any one of claims 1 to 13, characterized in that: Along the direction from the first retaining wall to the second retaining wall, the thickness of the partition is 0.4 mm to 5 mm.

15. The optical module according to any one of claims 1 to 14, characterized in that: The housing further comprises a circuit board mounting portion, wherein the optical device mounting portion is located between the circuit board mounting portion and the interface portion; The housing further comprises a slide groove, the notch of which is opened in the arrangement direction from the third retaining wall to the fourth retaining wall, a portion of the slide groove is located at the circuit board mounting portion, and the slide groove extends along the arrangement direction of the circuit board mounting portion, the optical device mounting portion and the interface portion; The optical module further includes an unlocking assembly, the unlocking assembly including an unlocking member and a handle, the unlocking member is installed in the slide slot, the handle is connected to the end of the unlocking member away from the circuit board mounting portion, and the handle is located outside the housing; the end of the unlocking member away from the handle is located on the circuit board mounting portion, and the end of the unlocking member away from the handle is lower than the surface of the circuit board mounting portion; The circuit board mounting portion is provided with a hook, and the direction in which the hook protrudes from the surface of the circuit board mounting portion is the same as the direction of the notch of the slide groove. When the handle drives the unlocking member to slide in the slide groove along the arrangement direction of the circuit board mounting portion, the optical device mounting portion and the interface portion, the end of the unlocking member facing away from the handle is exposed from the surface of the circuit board mounting portion at a height greater than the height of the hook protruding from the surface of the circuit board mounting portion.

16. The optical module according to claim 15, characterized in that: The unlocking assembly also includes a spring, and the unlocking piece includes a spring mounting groove, and the spring is installed in the spring mounting groove; the slide groove is provided with a limiting column, and the limiting column is inserted in the spring mounting groove, along the arrangement direction of the circuit board mounting part, the optical device mounting part and the interface part, one end of the spring abuts against the limiting column, and the other end of the spring abuts against the groove wall of the spring mounting groove.

17. The optical module according to claim 15 or 16, characterized in that: The optical module further comprises a bottom plate, the bottom plate is covered on the notch of the slide slot, and the bottom plate is fixedly connected to the housing.

18. An optical line terminal device, characterized in that: The optical module comprises a single board and the optical module according to any one of claims 1 to 17, wherein the optical module is electrically connected to the single board.

19. An optical communication system, characterized in that: The optical communication system comprises an optical network unit and the optical line terminal device according to claim 18, wherein the optical line terminal device is connected to the optical network unit via a passive optical distribution network device.

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