Connector, plug-in module, plug-in module assembly and communication equipment

Abstract

The embodiment of the invention provides a connector, a plug-in module, a plug-in module assembly and communication equipment, a port of the connector is in plug-in fit with the plug-in module, a first contact group and a second contact group are arranged in the port, the first contact group and the second contact group are distributed at intervals along the length direction, the first contact group is arranged closer to an opening of the port, and the second contact group is arranged closer to the opening of the port. The number of connecting pins in the port can be increased through the two contact groups, the requirement for the multi-mode coexistence transmission quantity can be met, the connector can achieve multi-mode transmission, for example, the port can be matched with a three-mode coexistence module in an inserted mode, and three-mode transmission of GPON, 10 GPON and 50 GPON is achieved. And the added contact groups are distributed in the length direction, so that the influence on the width and the height of the port is relatively small, and the port can be downwards compatible with a conventional SFP + module and a DSFP module, such as a GPON and / or 10GPON transmission mode, so that the requirements of smooth evolution and upgrading of OLT equipment are met.

Description

Technical Field

[0001] The present application relates to the field of optical communication technology, and in particular to a connector, a plug-in module, a plug-in module assembly and a communication device. Background Art

[0002] With the explosive growth of information traffic in modern society, in order to meet the development needs of bandwidth services, passive optical network (PON) technology is also facing continuous evolution and upgrading. Taking GPON optical network as an example, it has evolved from GPON to 10GPON in recent years, and is now in a period of further advancement from 10GPON to 50GPON.

[0003] At present, in order to achieve a smooth upgrade of the network, the optical line terminal (OLT) of the access network often pursues "multi-mode coexistence". For example, the OLT equipment connector and the matching optical module have evolved from 10GPON to 50GPON, and the 50GPON optical module and connector are required to be compatible with GPON and 10GPON modes to meet the needs of the three transmission modes of GPON, 10GPON and 50GPON. Among them, when the optical module and the connector are matched, the gold fingers of the optical module are electrically connected to the gold fingers of the connector. The common packaging forms of optical modules are small form-factor pluggables plus (SFP+) and dual-channel small form-factor pluggable optical modules (DSFP). The number of pins (PIN number) of the gold fingers in the small form-factor pluggable optical module is 20, and the number of PINs of the gold fingers in the dual-channel small form-factor pluggable optical module is 22. The gold fingers of the matching connectors are also 20PIN and 22PIN respectively. However, under the requirement of three-mode coexistence, 20PIN and 22PIN are difficult to meet the requirements of the number of signal transmission, making it difficult to achieve the coexistence of GPON, 10GPON and 50GPON. Summary of the invention

[0004] The present application provides a connector, a plug-in module, a plug-in module assembly and a communication device. The number of PINs of the connector and the plug-in module can meet the signal transmission volume requirements of multi-mode coexistence, such as compatibility with three transmission modes of GPON, 10GPON and 50GPON, so that the OLT device can achieve three-mode compatible coexistence, which is conducive to the smooth evolution and upgrade of the OLT device.

[0005] A first aspect of the present application provides a connector, including a shell having a port on the shell, the port being used to be plugged and matched with a first plug-in module to facilitate signal transmission between the connector and the first plug-in module.

[0006] The port is provided with a first contact group and a second contact group, the first contact group and the second contact group are spaced apart along a first direction, and the first contact group is arranged adjacent to the opening of the port, the first direction is the insertion direction of the plug-in module in the port, and the port has a first plug-in position. The two contact groups can increase the number of electrical connection pins in the port, which well meets the signal transmission volume requirements of multi-mode coexistence, enables the connector to achieve multi-mode coexistence, and is conducive to the evolution and upgrade of OLT equipment.

[0007] The connector can be plugged into the first plug-in module, the first plug-in module is plugged into the first plug-in position, the first contact group is used to electrically connect with the first plug-in module to form a first transmission path, the second contact group is used to electrically connect with the first plug-in module to form a second transmission path, the first transmission path is used to implement at least one of the first transmission mode and the second transmission mode, and the second transmission path is used to implement the third transmission mode. Among them, the first transmission mode, the second transmission mode and the third transmission mode can be transmission modes with progressive transmission rates, so that the connector can meet the transmission requirements of at least one of the first transmission mode and the second transmission mode, as well as the third transmission mode, and realize the multi-mode compatible coexistence of the connector. For example, the first transmission path can be compatible with the first transmission mode and the second transmission mode, and the connector can be compatible with the first transmission mode, the second transmission mode and the third transmission mode, and meet the transmission requirements of the first transmission mode, the second transmission mode and the third transmission mode, such as realizing the coexistence of GPON, 10GPON and 50GPON.

[0008] Since the first contact group and the second contact group are spaced apart along the first direction (length direction), and the additional second contact group is distributed in the length direction, compared with the conventional SFP+ or DSFP module connector, the width and height dimensions of the connector and the port are less affected, so that the port of the connector can still be matched and plugged with the conventional SFP+ module or DSFP module, which also makes the connector backward compatible with the conventional SFP+ or DSFP module, and can be used to realize the first transmission mode and / or the second transmission mode, such as realizing GPON transmission and / or 10GPON transmission, thereby meeting the needs of smooth evolution and upgrading of OLT equipment.

[0009] In summary, the connector can achieve multi-mode coexistence (such as three-mode compatible coexistence), and can match the plug-in module (i.e., the first plug-in module) that is compatible with at least one of the first transmission mode and the second transmission mode, as well as the third transmission mode, to meet the transmission requirements of at least one of the first transmission mode and the second transmission mode, as well as the third transmission mode. The connector can also downwardly match the plug-in module that can achieve the first transmission mode and / or the second transmission mode to meet the transmission requirements of the first transmission mode and / or the second transmission mode, so that the connector can meet the requirements of smooth evolution and upgrade of OLT equipment under the condition of achieving multi-mode coexistence.

[0010] In addition, the connector package size has little change in width and height, so that the OLT equipment can still achieve a high-density layout of 16 ports and corresponding 16 plug-in modules. The package form can also adopt the package form of conventional SFP+ or DSFP module connectors, which has high applicability and is easy to produce and promote. And under the condition of ensuring that the number of PINs is met, one connector port is plugged into one plug-in module, and there is no electromagnetic leakage problem between the two plug-in modules, ensuring the transmission effect.

[0011] In a possible implementation, the port is also used to cooperate with the second plug-in module, and the port has a second plug-in position, the first plug-in position and the second plug-in position are distributed along the first direction, and the second plug-in position is adjacent to the opening of the port. The second plug-in module is plugged into the second plug-in position, and the first contact group is used to electrically connect with the second plug-in module to form a third transmission path, and the third transmission path is used to implement at least one of the first transmission mode and the second transmission mode. By plugging different plug-in modules into different plug-in positions, the connector can be downwardly matched with the plug-in module (i.e., the second plug-in module) of the first transmission mode and / or the second transmission mode, meeting the transmission requirements of the first transmission mode and / or the second transmission mode, thereby achieving a smooth evolution and upgrade from the first transmission mode and / or the second transmission mode to the third transmission mode.

[0012] In a possible implementation, the first contact group includes a plurality of first upper contact portions and a plurality of first lower contact portions, the plurality of first upper contact portions are distributed at intervals along the second direction, and the plurality of first lower contact portions are distributed at intervals along the second direction.

[0013] The plurality of first upper contact portions and the plurality of first lower contact portions are respectively located on two opposite sides of the port along the third direction, the third direction, the second direction and the first direction are perpendicular to each other, a first plugging gap is formed between the plurality of first upper contact portions and the plurality of first lower contact portions, when the plug-in end is plugged into the port, the plug-in end is inserted into the first plugging gap, so as to facilitate the electrical connection between the plug-in end and the first contact group. Moreover, by distributing the first upper contact portion and the first lower contact portion on two opposite sides of the port along the third direction, the width of the entire connector can be reduced under the condition of increasing the number of PINs of the connector, so as to facilitate the high-density layout on the OLT device and improve the transmission performance.

[0014] In a possible implementation, the second contact group includes a plurality of second upper contact portions and a plurality of second lower contact portions, the plurality of second upper contact portions are distributed at intervals along the second direction, and the plurality of second lower contact portions are distributed at intervals along the second direction.

[0015] The plurality of second upper contacts and the plurality of first upper contacts are located on the same side of the port, the plurality of second lower contacts and the plurality of first lower contacts are located on the same side of the port, and a second plug-in gap is formed between the plurality of second upper contacts and the plurality of second lower contacts. When the plug-in end is plugged into the port, the plug-in end is inserted into the second plug-in gap, so that the second conductive group on the plug-in end can be electrically connected to the first contact group, and the first conductive group can also be electrically connected to the second contact group, so as to realize the electrical connection between the connector and the plug-in module. It can also ensure that the port of the connector has a smaller width and height, and realize a high-density layout under the condition of ensuring the multi-PIN number design of the connector. In addition, it is also conducive to ensuring that the connector can be a packaging form corresponding to the connector of the conventional SFP+ or DSFP module, so as to ensure production and promotion.

[0016] In one possible implementation, the number of the first upper contact portions and the number of the first lower contact portions are the same, and the number of the second upper contact portions and the number of the second lower contact portions are the same, so that both the first contact group and the second contact group have a high degree of design symmetry, facilitate electrical connection with the plug-in module, and facilitate packaging and assembly of the connector.

[0017] In one possible implementation, the number of the first upper contact portion, the first lower contact portion, the second upper contact portion, and the second lower contact portion are all the same, which can reduce or avoid the impact of the increase in the second contact group on the dimensions of the connector port such as width and height, reduce design difficulty, and facilitate the packaging and assembly of the connector.

[0018] In a possible implementation, the number of the first upper contact parts and the number of the first lower contact parts are 10 respectively, so that the connector can achieve 40 pins. The connector can adopt the packaging form of a conventional SFP+ module connector, can be matched with a conventional SFP+ module to meet the GPON and 10GPON transmission modes, and can also be matched with a GPON / 10GPON / 50GPON three-mode coexistence plug-in module to be compatible with the three transmission modes of GPON, 10GPON, and 50GPON, and has relatively high production convenience and promotion applicability.

[0019] In a possible implementation, the number of the first upper contact parts and the number of the first lower contact parts are 11 respectively, so that the connector can achieve 44 PINs. The connector can adopt the packaging form of a conventional DSFP module connector, can be matched with a conventional DSFP module to meet the GPON and 10GPON transmission modes, and can also be matched with a GPON / 10GPON / 50GPON three-mode coexistence plug-in module to be compatible with the three transmission modes of GPON, 10GPON, and 50GPON. It has a large number of PINs, which is conducive to improving transmission performance, and has relatively high production convenience and promotion applicability.

[0020] In one possible implementation, the number of second upper contact portions and the number of second lower contact portions are respectively 10, which is close to or the same as the number of PINs of the first contact group, thereby reducing or avoiding the impact of the added second contact group on the port width and height dimensions, facilitating production and packaging, and facilitating promotion and use.

[0021] In one possible implementation, the number of second upper contacts and the number of second lower contacts are respectively 11, which is close to or the same as the number of PINs of the first contact group, thereby reducing or avoiding the impact of the added second contact group on the port width and height dimensions, facilitating production and packaging, and facilitating promotion and use.

[0022] In one possible implementation, the pin definitions of the plurality of second upper contacts include GND, 50G RX1-, 50G RX1+, GND, VCC, VCC, GND, 50G TX1-, 50G TX1+, and GND, so that the second contact group can realize the 50G transmission mode and improve the transmission effect.

[0023] In a possible implementation manner, the first transmission mode is GPON or EPON.

[0024] In a possible implementation manner, the second transmission mode is 10GPON or 10EPON.

[0025] In a possible implementation, the third transmission mode is 50GPON or 50EPON, which can meet the requirements of the current OLT equipment evolving from 10GPON to 50GPON, or evolving from 10EPON to 50EPON, and has better practicality.

[0026] A second aspect of the present application provides a plug-in module, comprising a plug-in end, the plug-in end being used for plugging and mating with any of the above-mentioned connectors.

[0027] The plug end is provided with a first conductive group and a second conductive group, which are spaced apart along a first direction, and the first conductive group is arranged adjacent to the end face of the plug end, and the first direction is the insertion direction of the plug end on the connector.

[0028] The plug-in module is used to be plugged into the first plug-in position of the connector, the first conductive group is used to be electrically connected to the second contact group to form a second transmission path to achieve a third transmission mode, and the second conductive group is used to be electrically connected to the first contact group to form a first transmission path to achieve at least one of the first transmission mode and the second transmission mode, thereby achieving compatible coexistence of the first transmission mode, the second transmission mode and the third transmission mode, which is conducive to the smooth evolution and upgrade of the OLT equipment.

[0029] Moreover, since the first conductive group and the second conductive group are spaced apart in the length direction, compared with the conventional SFP+ or DSFP module, the additional second conductive group is distributed in the length direction, which has a smaller impact on the width and height of the plug-in end of the plug-in module, and can also meet the matching plug-in of the plug-in module and the multi-mode coexistence connector. In addition, the packaging of the plug-in module can also adopt the conventional SFP+ or DSFP module packaging form, which has a high degree of applicability and is easy to produce and promote.

[0030] In a possible implementation, the first conductive group includes a plurality of first upper conductive portions and a plurality of first lower conductive portions, the plurality of first upper conductive portions are distributed at intervals along the second direction, and the plurality of first lower conductive portions are distributed at intervals along the second direction.

[0031] The plurality of first upper conductive parts and the plurality of first lower conductive parts are respectively located on two opposite surfaces of the plug end along the third direction, and the third direction, the second direction and the first direction are perpendicular to each other. When the plug end is plugged into the port of the connector, the first upper conductive part and the second upper contact part are electrically connected, and the first lower conductive part and the second lower contact part are electrically connected, thereby realizing electrical connection between the first conductive group and the second contact group.

[0032] In a possible implementation, the second conductive group includes a plurality of second upper conductive portions and a plurality of second lower conductive portions, the plurality of second upper conductive portions are spaced apart along the second direction, and the plurality of second lower conductive portions are spaced apart along the second direction.

[0033] The plurality of second upper conductive parts and the plurality of first upper conductive parts are located on the same surface of the plug-in end, and the plurality of second lower conductive parts and the plurality of first lower conductive parts are located on the same surface of the plug-in end. When the plug-in end is plugged into the port of the connector, the second upper conductive part and the first upper contact part are electrically connected, and the second lower conductive part and the first lower contact part are electrically connected, so that the first conductive part group and the second contact group are electrically connected while the second conductive part group and the first contact group are electrically connected. It can also ensure that the plug-in end of the plug-in module has a smaller width and height size, and realize a high-density layout under the condition of ensuring the design of multiple PIN numbers of the plug-in module. In addition, it can also facilitate the plug-in module to adopt conventional SFP+ or DSFP packaging to ensure production and promotion.

[0034] In one possible implementation, the number of the first upper conductive parts and the first lower conductive parts are the same, and the number of the second upper conductive parts and the second lower conductive parts are the same, so that the first conductive group and the second conductive group have a high design symmetry, which facilitates the electrical connection with the connector and the packaging and assembly of the plug-in module.

[0035] In one possible implementation, the number of the first upper conductive part, the second upper conductive part, the first lower conductive part, and the second lower conductive part are all the same, so as to reduce or avoid the influence of the increase of the second conductive group on the width and height dimensions of the plug-in end, reduce the design difficulty, and facilitate the packaging and assembly of the plug-in module.

[0036] In a possible implementation, the number of the first upper conductive parts and the number of the first lower conductive parts are respectively 10, so that the plug-in module can achieve 40PIN. The plug-in module can adopt a conventional SFP+ packaging form, can be matched with a three-mode coexisting SFP+ module connector to be compatible with the three transmission modes of GPON, 10GPON, and 50GPON, and has relatively high production convenience and promotion applicability.

[0037] In a possible implementation, the number of the first upper conductive parts and the number of the first lower conductive parts are 11, respectively, so that the plug-in module can achieve 44 PINs. The plug-in module can adopt a conventional DSFP packaging form, can be matched with a three-mode coexistence DSFP module connector to be compatible with three transmission modes of GPON, 10GPON, and 50GPON, has a large number of PINs, is conducive to improving transmission performance, and has relatively high production convenience and promotion applicability.

[0038] In one possible implementation, the number of second upper conductive parts and the number of second lower conductive parts are respectively 10, which is close to or the same as the number of PINs of the first conductive group, which helps to reduce or avoid the impact of the added second conductive group on the width and height dimensions of the plug-in end, facilitates production and packaging, and is easy to promote and use.

[0039] In one possible implementation, the number of second upper conductive parts and the number of second lower conductive parts are respectively 11, which is close to or the same as the number of PINs of the first conductive group, which helps to reduce or avoid the impact of the added second conductive group on the width and height dimensions of the plug-in end, facilitates production and packaging, and is easy to promote and use.

[0040] The third aspect of the present application provides a communication device, including a circuit board and any of the above connectors, the connector is fixed on the circuit board, and the first contact group and the second contact group are electrically connected to the circuit board respectively. By including a connector, the connector has a large number of pins, which can meet the signal transmission volume requirements of multi-mode coexistence. The connector can be matched with a plug-in module of the first transmission mode / second transmission mode / third transmission mode coexisting three modes to achieve compatible coexistence of at least three transmission modes. The connector can also match the plug-in module of the first transmission mode and / or the plug-in module of the second transmission mode downward to meet the first transmission mode and the second transmission mode, which is conducive to achieving the three-mode compatible coexistence of the communication device, thereby meeting the needs of smooth evolution and upgrade of the communication device.

[0041] In a possible implementation, a plurality of connectors are fixed on a circuit board, and the plurality of connectors are distributed along the second direction, which is beneficial to improving the layout density of the connectors on the communication device and improving the transmission performance.

[0042] In a possible implementation, the number of connectors is 16, which realizes a high-density layout of connectors and ports on the communication device and ensures the transmission performance of the communication device.

[0043] The fourth aspect of the present application provides a communication device, including a connector and a plug-in module, wherein the connector is any of the above connectors, or the connector is any of the above connectors, and the plug-in module is any of the above plug-in modules. By including the connector, it is beneficial to realize the multi-mode compatible coexistence of the communication device and meet the requirements of smooth evolution and upgrade of the communication device transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic diagram of a PON passive optical network system provided in an embodiment of the present application;

[0045] Figure 2 A schematic diagram of a partial structure of a communication device provided in an embodiment of the present application;

[0046] Figure 3 A schematic diagram of the matching between a connector and a plug-in module provided in an embodiment of the present application;

[0047] Figure 4 It is a schematic diagram of a plug-in module in the related art;

[0048] Figure 5 is a schematic diagram of another plug-in module in the related art;

[0049] Figure 6 is a schematic diagram of another plug-in module in the related art;

[0050] Figure 7 A schematic diagram of another plug-in module provided in an embodiment of the present application;

[0051] Figure 8 A schematic diagram of the structure of a connector provided in an embodiment of the present application;

[0052] Fig. 9 A schematic cross-sectional structure diagram of a connector provided in an embodiment of the present application;

[0053] Fig.10 Another cross-sectional front view schematic diagram of a connector provided in an embodiment of the present application;

[0054] Fig.11 A schematic diagram of a matching scenario of a connector and a plug-in module provided in an embodiment of the present application;

[0055] Fig.12 A schematic diagram of the structure of a plug-in module provided in an embodiment of the present application;

[0056] Fig.13 A cross-sectional schematic diagram of a plug-in module provided in an embodiment of the present application;

[0057] Fig.14 A schematic diagram of a plug-in process between a second plug-in module and a connector provided in an embodiment of the present application;

[0058] Fig.15 A schematic diagram of a second plug-in module and a connector plugged in and mated with each other provided in an embodiment of the present application;

[0059] Fig.16 A schematic diagram of a plug-in process between a plug-in module and a connector provided in an embodiment of the present application;

[0060] Fig.17 A schematic diagram of the connection between a plug-in module and a connector provided in an embodiment of the present application;

[0061] Fig.18 A schematic diagram of the structure of a first contact group and a second contact group in a connector provided in an embodiment of the present application;

[0062] Fig.19 A schematic diagram of another connector provided in an embodiment of the present application;

[0063] Fig. 20 A schematic front view of a plug-in module provided in an embodiment of the present application;

[0064] Fig.21 A rear view schematic diagram of a plug-in module provided in an embodiment of the present application;

[0065] Fig. 22 A schematic diagram of another plug-in module provided in an embodiment of the present application.

[0066] Description of reference numerals:

[0067] 100-connector;

[0068] 101-port; 101b-first plug-in position; 101a-second plug-in position; 1011-opening; 1012-accommodating cavity;

[0069] 102 - first contact group; 112 - first upper contact portion; 122 - first lower contact portion; 132 - first insertion gap; 142 - first avoidance portion;

[0070] 103 - second contact group; 113 - second upper contact portion; 123 - second lower contact portion; 133 - second insertion gap; 143 - second avoidance portion;

[0071] 200- plug-in module;

[0072] 201-plug end;

[0073] 202 - first conductive group; 212 - first upper conductive portion; 222 - first lower conductive portion;

[0074] 203 - second conductive group; 213 - second upper conductive portion; 223 - second lower conductive portion;

[0075] 400-Circuit Board. DETAILED DESCRIPTION

[0076] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0077] Whether active devices are used in the transmission facilities of the optical fiber access network is divided into active optical network and passive optical network. Passive optical network (PON for short) refers to (in the optical distribution network) without any electronic devices and electronic power supply. Passive optical network includes broadband passive optical network (BPON for short), Ethernet passive optical network (EPON for short), and gigabit passive optical network (GPON for short).

[0078] Taking GPON network as an example, GPON technology is the latest generation of broadband passive optical integrated access standard based on ITU-TG.984.x standard. It has many advantages such as high bandwidth, high efficiency, large coverage, and rich user interfaces, and has been widely studied and applied.

[0079] Figure 1 A schematic diagram of a GPON passive optical network system provided in an embodiment of the present application.

[0080] See also Figure 1 As shown, the service types supported by the GPON network system may include public switched telephone network (PSTN), data services (internet), community antenna television (CATV, also known as broadcasting and television cable television system or broadcasting and television cable television network), etc.

[0081] The GPON system mainly includes four functional modules: an optical line terminal 10 (OLT), an optical network unit 20 (ONU), an optical distribution network 30 (ODN) and a system management module (not shown in the figure).

[0082] The function of the optical line terminal 10 is to communicate with the optical network unit 20 through one or more optical distribution networks 30. The optical line terminal OLT and the optical network unit ONU can be regarded as master-slave communication lines. The optical line terminal OLT manages information instructions and monitoring information from the optical network unit ONU. The optical line terminal OLT is usually installed in a central control station, such as a base station, a service node room, etc.

[0083] The optical network unit 20 is located at the user side, specifically between the optical distribution network 30 and the user 40. The network side of the optical network unit ONU may have an optical interface, and the user side may be an electrical interface. For example, the optical network unit ONU may be an optical modem at the user side. Figure 1 As shown, one optical line terminal 10 can be connected to multiple optical network units 20.

[0084] The optical distribution network ODN is a transmission facility in the optical fiber access network, providing an optical transmission channel for the optical network unit ONU and the optical line terminal OLT as a physical connection between the two. The optical distribution network 30 may include optical fibers, optical cable junction boxes, optical connectors (pigtails), passive optical splitters (such as Figure 1 Passive optical devices such as passive splitters 31 and optical fiber connectors.

[0085] The system management function module is responsible for the maintenance and management of the optical fiber access network, including configuration management, performance management, fault management, security management and billing management.

[0086] Figure 2 A schematic diagram of the local structure of a communication device provided in an embodiment of the present application.

[0087] In the GPON system, OLT is an important central office device, which is an optical-electrical integrated device. Figure 2 As shown, the OLT device may include a body 110 and a connector 100, the connector 100 is assembled and fixed to the body 110, one end of the connector 100 has a port 101, the body 110 has a panel 111, the port 101 of the connector 100 may be located on the panel 111, and the OLT device may be connected to an external optical fiber or the like through the port 101 of the connector 100 to achieve signal transmission.

[0088] Figure 3 A schematic diagram of the cooperation between a connector and a plug-in module provided in an embodiment of the present application.

[0089] For example, see Figure 3 As shown, the connector 100 can be plugged into and matched with the plug-in module 200. The connector 100 can include a shell 100a, which can be an electromagnetic shielding cage (electromagnetic interference, EMI for short). For example, the shell 100a can be a cage structure formed by a material with electromagnetic shielding effect, and a port 101 can be opened at one end of the shell 100a.

[0090] The plug-in module 200 may also include a housing 200 a , and a protruding plug-in end 201 may be provided at one end of the housing 200 a . The plug-in end 201 may be plugged and matched with the port 101 , so as to fix the plug-in module 200 to the connector 100 .

[0091] The plug-in module 200 may be a module capable of realizing photoelectric conversion, for example, the plug-in module 200 may be an optical module, and the plug-in module 200 may be connected to an optical fiber, etc., to realize conversion between optical signals and electrical signals. The plug-in module 200 may realize electrical connection with the connector 100 while being plugged in and matched with the connector 100, and transmit the signal to the connector 100 to realize signal processing, etc.

[0092] The OLT device may further include a circuit board 400 , which may be fixed in the body, and the connector 100 may be fixed on the circuit board 400 and electrically connected to the circuit board 400 to transmit signals to the circuit board 400 .

[0093] It is understandable that the OLT device may further include other structural components to improve its functions. For example, the OLT device may further include a chip unit, a heat dissipation structure, and the like.

[0094] With the rapid growth of information traffic, communication networks and communication equipment are required to be continuously upgraded and accelerated. In recent years, the passive optical network PON has gradually evolved from GPON to 10GPON, and is currently in the period of further advancing from 10GPON to 50GPON. Among them, GPON refers to support for Gigabit transmission mode access, 10GPON refers to support for 10G transmission mode access, and 50GPON refers to support for 50G transmission mode access. As the last mile of information transmission, the OLT at the access network end often requires multi-mode coexistence during the OLT upgrade process, that is, multiple transmission modes are compatible and coexist, and can support transmission to achieve smooth network upgrades. For example, taking the OLT device connector and the matching plug-in module as an example, from GPON to 10GPON, the 10GPON module and the connector can be compatible with the GPON transmission mode (forming a GPON / 10GPON two-mode coexistence module), and the 10GPON connector port can match the plug-in GPON / 10GPON module to be compatible with both GPON and 10GPON transmission modes. Moreover, the connector can also be backward compatible with the existing plug-in GPON module to realize the GPON transmission mode, thereby achieving a smooth evolution and upgrade to 10GPON. Similarly, from 10GPON to 50GPON, the 50GPON module can be compatible with GPON and 10GPON transmission modes (forming a GPON / 10GPON / 50GPON three-mode coexistence module), and the 50GPON connector port can match and plug in the above-mentioned GPON / 10GPON / 50GPON three-mode coexistence module. Both the 50GPON plug-in module and the 50GPON connector can be compatible with the three coexistence transmission modes. The 50GPON connector port can also be backward compatible with the existing 10GPON module, GPON module or compatible with the GPON / 10GPON two-mode coexistence module.

[0095] Figure 4 is a schematic diagram of a plug-in module in the related art, Figure 5 It is a schematic diagram of another plug-in module in the related art.

[0096] In order to realize the electrical connection between the plug-in module and the connector and to achieve the signal transmission between the two, both the plug-in module and the connector are provided with gold fingers for realizing the electrical connection. Figure 4As shown, taking the plug-in module 10a as an example, the length direction of the plug-in module 10a is the x direction in the figure, the plug-in direction of the plug-in module 10a can be parallel to the x direction, the width direction of the plug-in module 10a is the y direction in the figure, and the height direction of the plug-in module 10a is perpendicular to the length x direction and the width y direction (that is, perpendicular to the page direction). The plug-in end 10a1 of the plug-in module 10a has a gold finger, and the gold finger may include a conductive group 10a2, and the conductive group 10a2 may include a plurality of upper conductive parts 10a3 and a plurality of lower conductive parts (not shown in the figure), and the plurality of upper conductive parts 10a3 and the plurality of lower conductive parts are respectively located on two opposite sides of the plug-in end 10a1 along the height direction, Figure 4 Only the upper conductive part 10a3 is shown, and multiple upper conductive parts 10a3 are distributed along the width y direction. Correspondingly, multiple lower conductive parts are also distributed along the width y direction. The number of upper conductive parts 10a3 and lower conductive parts can be the same, and each upper conductive part 10a3 and each lower conductive part can be used as a pin of the plug-in module 10a respectively.

[0097] Correspondingly, the connector matching the plug-in module 10a may also have a contact group in its port, which may include multiple upper contact parts and multiple lower contact parts, which are respectively located on two opposite sides of the port along the height direction, and the multiple upper contact parts are spaced apart along the width direction, and the multiple lower contact parts are also spaced apart along the width direction. The number of upper contact parts and lower contact parts may be the same, and each upper contact part and lower contact part may serve as a pin of the connector. When the plug-in end of the plug-in module is plugged into the port of the connector, the upper conductive part and the upper contact part may be electrically contacted and connected in a one-to-one correspondence, and the lower conductive part and the lower contact part may also be electrically contacted and connected in a one-to-one correspondence.

[0098] Currently, the conventional packaging forms of plug-in modules are small form-factor pluggables plus (SFP+) and dual small form-factor pluggables (DSFP). Figure 4 As shown, the plug-in module 10a is an SFP+ module, and the number of its pins (the sum of the upper conductive part 10a3 and the lower conductive part) is 20 PINs, and the number of pins in the connector (not shown in the figure) that matches the SFP+ module is also 20 PINs. Figure 5As shown, the plug-in module 10b is a DSFP module, and the number of its pins (the total number of the upper conductive part 10b3 and the lower conductive part) is 22PIN, and the number of pins in the DSFP module connector 20b (not shown in the figure) is also 22PIN. These two packaging forms of modules can meet the transmission quantity requirements of the GPON transmission mode and / or the 10GPON transmission mode, and have a relatively small volume size, so that 16 connectors can be distributed on a single circuit board on the OLT device to form 16 ports in parallel, and 16 plug-in modules can be plugged and fixed, realizing a high-density layout of the plug-in modules and connector ports on the OLT device, which well meets the transmission requirements, and is therefore widely used in current PON systems.

[0099] However, under the requirement of three-mode coexistence, the number of PINs of the plug-in modules and module connectors in the above-mentioned packaging form can no longer meet the requirement of the number of signal transmissions, which restricts the realization of three-mode coexistence of plug-in modules and connectors, thereby affecting the realization of three-mode compatible coexistence of GPON, 10GPON and 50GPON of OLT equipment, and it is difficult to meet the smooth evolution and upgrade requirements of OLT equipment to 50GPON.

[0100] Figure 6 It is a schematic diagram of another plug-in module in the related art.

[0101] There are also designs in the related art to increase the number of PINs of the plug-in module, for example, see Figure 6 As shown, the plug-in module 10c is a quad small form-factor pluggable module (QSFP), and its plug-in end 10c1 has more upper conductive parts 10c3 and lower conductive parts (not shown in the figure). For example, the number of upper conductive parts 10c3 and lower conductive parts can be 19 respectively, so that the plug-in module 10c has 38 pins, which can meet the signal transmission volume requirements of the three-mode coexistence design. However, combined with Figure 4 and Figure 6 As shown in the figure, the width of the QSFP module is significantly larger than that of the SFP+ module and the DSFP module, and it is difficult to achieve a high-density layout of 16 ports on the corresponding OLT device. Moreover, since the width of the QSFP module is different from that of the SFP+ module and the DSFP module, they cannot be directly used interchangeably. For example, the EMI shielding shell port of the QSFP module connector cannot be plugged into the EMI shielding shell port of the SFP+ module connector or the DSFP module connector, and it is difficult to achieve the backward compatibility of the 50GPON connector port with the 10GPON and GPON transmission mode plug-in modules, which cannot meet the needs of the smooth evolution and upgrade of the OLT equipment to 50GPON.

[0102] Figure 7This is a schematic diagram of another plug-in module in the related art.

[0103] Alternatively, there is also a method of combining two DSFP modules to increase the number of PINs in the related art, see Figure 7 As shown, the housing of the joint module 10d has two plug-in terminals 10d1, and each plug-in terminal 10d1 has 11 upper conductive parts 10d3 and 11 lower conductive parts (not shown in the figure), so that the joint module 10d can have 44 pins, which meets the signal transmission volume requirements of the three-mode coexistence, and can achieve compatibility with GPON and 10GPON transmission modes within the 50GPON module, and achieve three-mode coexistence within the plug-in module. A GPON / 10GPON / 50GPON three-mode coexistence joint module 10d can be correspondingly plugged into the ports of two connectors 20d of the OLT device, and the connector 20d can be a DSFP module connector. When the joint module 10d does not need to be plugged in, a DSFP module can be plugged into the port of one of the connectors 20d, so that the port of the OLT device connector 20d can be backward compatible with the DSFP module of the GPON and 10GPON modes, which can meet the requirements of the smooth evolution and upgrade of the OLT device.

[0104] But combined Figure 5 and Figure 7 As shown, the width of the combined module 10d is wider than that of the conventional DSFP module, and there is also the problem that it is difficult to realize the high-density layout of the plug-in modules on the OLT device. Moreover, the EMI shielding shell matched with the combined module 10d is a special-shaped optical cage. In order to enable the two plug-in ends 10d1 to be plugged into the two connectors 20b, there is no barrier between the ports of the two shielding shells, which is easy to cause electromagnetic compatibility (EMC) leakage problems, and other shielding methods need to be added. In addition, the packaging form of the combined module 10d is not a conventional packaging form such as an SFP+ module or a DSFP module, and its applicability is relatively poor, and it is difficult to produce and promote.

[0105] Based on this, the embodiment of the present application provides a connector and a plug-in module, the number of PINs of the connector and the plug-in module can meet the signal transmission volume requirements of the coexistence of three modes, and can realize multi-mode transmission, such as compatibility with GPON, 10GPON, and 50GPON three transmission modes. The connector port can be matched with the plug-in module that is compatible with and coexists in the three modes of GPON / 10GPON / 50GPON, so that the OLT device can realize the compatible coexistence of the three modes of GPON, 10GPON, and 50GPON. The connector port can also be backward compatible with plug-in modules in conventional packaging forms (such as SPF+, DSFP), such as realizing GPON and / or 10GPON transmission modes, thereby realizing the smooth evolution and upgrade of the OLT device.

[0106] Figure 8 A schematic diagram of the structure of a connector provided in an embodiment of the present application.

[0107] The connector provided in the embodiment of the present application is shown in FIG. Figure 8 As shown, the length direction of the housing 100a is taken as the first direction. Figure 8 The x direction in the figure is the width direction of the housing 100a as the second direction. Figure 8 The y direction in FIG. 1 is the third direction, and the height direction of the housing 100a is the third direction. Figure 8 In the z direction, the first direction, the second direction and the third direction may be perpendicular to each other. A port 101 may be provided at one end of the housing 100a along the first direction.

[0108] Fig. 9 A schematic cross-sectional structure diagram of a connector provided in an embodiment of the present application, Fig.10 Another cross-sectional front view of a connector provided in an embodiment of the present application is shown. Fig. 9 and Fig.10 The diagram shows two cross sections of the connector along the xz plane.

[0109] See also Fig. 9 As shown, the port 101 may include an opening 1011 and a receiving cavity 1012 communicating with the opening 1011 , and the opening 1011 may be located on an end surface of the housing 100 a along the first direction.

[0110] The port 101 of the connector 100 can be plugged with the plug-in end of the plug-in module (such as the plug-in module 200 described above). Specifically, the plug-in end can be inserted and fixed in the accommodating cavity 1012 of the port 101 through the opening 1011, so as to achieve the matching of the plug-in module and the connector 100, and further achieve the transmission of signals between the plug-in module and the connector 100. It can be understood that the insertion direction of the plug-in module in the accommodating cavity 1012 of the port 101 can be consistent with the first direction.

[0111] In order to realize the signal transmission between the plug-in module and the connector, the Fig. 9 and Fig.10 As shown, the connector 100 may be provided with a plurality of contact groups, such as a first contact group 102 and a second contact group 103. The first contact group 102 and the second contact group 103 may be provided in the receiving cavity 1012 of the port 101. The first contact group 102 and the second contact group 103 both have conductive properties. When the plug-in module is plugged into the port 101 of the connector 100, the first contact group 102 and / or the second contact group 103 may be electrically connected to the plug-in module to achieve signal transmission between the plug-in module and the connector 100.

[0112] Among them, the first contact group 102 and the second contact group 103 are spaced apart along the first direction, and in the two contact groups, the first contact group 102 is arranged closer to the opening 1011 of the port 101, that is, along the first direction from the opening 1011 of the port 101 to the other end of the connector 100, the first contact group 102 and the second contact group 103 are spaced apart in sequence.

[0113] The first contact group 102 may include a plurality of first upper contact portions 112 and a plurality of first lower contact portions 122, and the second contact group 103 may include a plurality of second upper contact portions 113 and a plurality of second lower contact portions 123. Each of the first upper contact portion 112, the first lower contact portion 122, the second upper contact portion 113 and the second lower contact portion 123 may be used as an electrical connection pin, respectively, for electrically contacting and connecting with the plug-in module. The connector of the double-row pin group formed by two rows of contact groups can increase the number of pins in the port 101, can well meet the signal transmission volume requirements of multi-mode coexistence, and enable the connector 100 to achieve multi-mode coexistence, thereby facilitating the evolution and upgrade of the OLT device, that is, the connector 100 can match with the plug-in module of multi-mode coexistence (such as the first plug-in module described below) to be compatible with multiple transmission modes.

[0114] For example, the number of PINs of the first contact group 102 and the second contact group 103 can be the same, such as both are 20PINs corresponding to the conventional SFP+ module, then the connector 100 can achieve 40PINs, and the connector 100 can meet the signal transmission volume requirements of the three transmission modes of GPON, 10GPON, and 50GPON, that is, the connector 100 can be compatible with the three transmission modes of GPON, 10GPON, and 50GPON. The connector 100 can be matched with the GPON / 10GPON / 50GPON three-mode coexisting plug-in module to meet the transmission requirements of the three transmission modes of GPON, 10GPON, and 50GPON.

[0115] Among them, the pin PIN definitions of the first contact group 102 and the second contact group 103 can be different to meet different transmission modes. For example, the first contact group 102 can be defined to implement at least one of the first transmission mode and the second transmission mode, and the second contact group 103 can be defined to implement the third transmission mode. The first transmission mode, the second transmission mode and the third transmission mode can be three transmission modes with progressive transmission rates. For example, the first contact group 102 can be defined to be compatible with the two transmission modes of GPON and 10GPON, and the second contact group 103 can be defined to implement the 50GPON transmission mode.

[0116] For example, the connector 100 can be plugged into and matched with the first plug-in module 300 (see Fig.11As shown), the first plug-in module may be the above-mentioned plug-in module 200, the first plug-in module may be a plug-in module that is compatible with at least one of the first transmission mode and the second transmission mode, and the third transmission mode, the port 101 of the connector 100 may have a first plug-in position 101b, and when the first plug-in module is plugged into the port 101, the plug-in end of the first plug-in module is plugged into the first plug-in position 101b.

[0117] The first contact group 102 can be electrically connected to the first plug-in module to form a first transmission path, and the first transmission path can be used to implement at least one of the first transmission mode and the second transmission mode. The second contact group 103 can be electrically connected to the first plug-in module to form a third transmission path, and the third transmission path can be used to implement the third transmission mode. This enables the connector to meet the transmission requirements of at least one of the first transmission mode and the second transmission mode, as well as the third transmission mode, thereby achieving multi-mode compatible coexistence of the connector.

[0118] It should be noted that the first contact group 102 can be defined as being compatible with both the first transmission mode and the second transmission mode, and the first contact group 102 is electrically connected to the first plug-in module, and can be compatible with the first transmission mode and the second transmission mode. Alternatively, in some other examples, the first contact group 102 can also be defined as only implementing the first transmission mode, and the first contact group 102 is electrically connected to the first plug-in module, and can implement the first transmission mode. Alternatively, the first contact group 102 can also be defined as only implementing the second transmission mode, and the first contact group 102 is electrically connected to the first plug-in module, and can implement the second transmission mode.

[0119] In the embodiment of the present application, taking the first contact group 102 as being defined as compatible with the first transmission mode and the second transmission mode as an example, the first plug-in module can be a plug-in module compatible with the first transmission mode, the second transmission mode and the third transmission mode. The first contact group 102 is electrically connected to the first plug-in module to form a first transmission path, and the first transmission path is used to implement the first transmission mode and the second transmission mode. The second contact group 103 is electrically connected to the first plug-in module to form a second transmission path, and the second transmission path is used to implement the third transmission mode, that is, the connector can be compatible with the coexistence of the first transmission mode, the second transmission mode and the third transmission mode through the first contact group 102 and the second contact group 103, and meet the transmission requirements of the three transmission modes of the first transmission mode, the second transmission mode and the third transmission mode, such as realizing the coexistence of three modes of GPON, 10GPON and 50GPON.

[0120] Since the first contact group 102 and the second contact group 103 are spaced apart along the first direction (length x direction), and the additional second contact group 103 is distributed in the length direction, compared with the conventional SFP+ or DSFP module connector, the width and height dimensions of the connector 100 and the port 101 are less affected, so that the port 101 of the connector 100 can still be matched and plugged with a conventional SFP+ module or DSFP module, which means that the connector 100 can be backward compatible with matching conventional SFP+ or DSFP modules, and can be used to implement the first transmission mode and / or the second transmission mode, such as implementing GPON transmission and / or 10GPON transmission, thereby meeting the needs of smooth evolution and upgrading of OLT equipment.

[0121] It is understandable that, since the first contact group 102 and the second contact group 103 are spaced apart in the length direction, in order to realize different transmission modes, different plug-in modules have different insertion depths (insertion depths in the length direction) on the port 101. Fig. 9 and Fig.10 As shown, the port 101 of the connector 100 may also have a second plugging position 101a. It can be understood that the first plugging position 101b and the second plugging position 101a are two positions distributed along the plugging direction (length direction or first direction). Among the two plugging positions, the second plugging position 101a can be set closer to the opening 1011 of the port 101.

[0122] For example, the connector may also be plugged into and matched with a second plug-in module, and the second plug-in module may be a conventional SFP+ module, such as the plug-in module 10a described above (see Fig.11 The second plug-in module may also be a conventional DSFP module, such as the plug-in module 10b described above. The second plug-in module may be a plug-in module capable of implementing at least one of the first transmission mode and the second transmission mode. When the second plug-in module is plugged into the port 101, the plug-in end of the second plug-in module is plugged into the second plug-in position 101a.

[0123] The first contact group 102 can be electrically connected to the second plug-in module to form a third transmission path, and the third transmission path can be used to implement at least one of the first transmission mode and the second transmission mode. By inserting different plug-in positions along the length direction, the connector can be matched downward with the plug-in module that can implement the first transmission mode and / or the second transmission mode, meet the transmission requirements of the first transmission mode and / or the second transmission mode, and realize the smooth evolution and upgrade from the first transmission mode and / or the second transmission mode to the third transmission mode.

[0124] Taking the first contact group 102 being defined as compatible with the first transmission mode and the second transmission mode as an example, the second plug-in module can be a plug-in module compatible with the first transmission mode and the second transmission mode. The first contact group 102 is electrically connected to the second plug-in module to form a third transmission path. The third transmission path can realize the first transmission mode and the second transmission mode, that is, the connector can downwardly match the plug-in module compatible with the first transmission mode and the second transmission mode.

[0125] In summary, the connector can achieve multi-mode coexistence (such as three-mode compatible coexistence), and the connector can match the plug-in module (such as the first plug-in module) that is compatible with at least one of the first transmission mode and the second transmission mode, as well as the third transmission mode, to meet the transmission requirements of at least one of the first transmission mode and the second transmission mode, as well as the third transmission mode. The connector can also downwardly match the plug-in module (such as the second plug-in module) that can achieve the first transmission mode and / or the second transmission mode to meet the transmission requirements of the first transmission mode and / or the second transmission mode, so that the connector can meet the requirements of smooth evolution and upgrade of OLT equipment under the condition of achieving multi-mode coexistence.

[0126] In addition, the package size of the connector 100 has a small change in width and height, so that the OLT device can still achieve a high-density layout of 16 ports 101 and corresponding 16 plug-in modules (first plug-in modules and / or second plug-in modules), and the package form can also adopt the package form of a conventional SFP+ module connector or a DSFP module connector, which has high applicability and is easy to produce and promote. And under the condition of ensuring that the number of PINs is met, a port 101 of a connector 100 can be plugged with a plug-in module, and there is no electromagnetic leakage problem between the two plug-in modules, ensuring the transmission effect.

[0127] Fig.11 A schematic diagram of a matching scenario between a connector and a first plug-in module and a second plug-in module provided in an embodiment of the present application.

[0128] For example, the first transmission mode may be GPON, the second transmission mode may be 10GPON, and the third transmission mode may be 50GPON. Fig.11 As shown, the first plug-in module 300 can be a GPON / 10GPON / 50GPON three-mode coexistence plug-in module, and the connector 100 can be matched and plugged with the first plug-in module 300 to achieve compatible coexistence of the three modes of GPON, 10GPON and 50GPON.

[0129] The connector 100 can also be matched and plugged with the second plug-in module. The second plug-in module can be a plug-in module 10a in the form of SFP+ packaging, or a plug-in module 10b in the form of DSFP packaging. The connector 100 matches the second plug-in module to achieve GPON and / or 10GPON transmission requirements, meet the requirements of the current OLT equipment evolution and upgrade from 10GPON to 50GPON, and have better practicality. In addition, the volume size of the connector 100 is small, and at least 16 connectors 100 can be arranged side by side on the circuit board 400, that is, 16 ports 101 for plugging are formed on the panel of the OLT device, realizing a high-density layout of the ports 101 and the plug-in modules, and ensuring transmission performance.

[0130] It can be understood that the first transmission mode, the second transmission mode and the third transmission mode can also be other types. For example, in some examples, the first transmission mode can be 10GPON, the second transmission mode can be 50GPON, and the third transmission mode can be XGPON, where X can be greater than 50, which can be specifically defined according to the access network transmission requirements.

[0131] Alternatively, in some other examples, the first transmission mode, the second transmission mode, and the third transmission mode may also be other types of passive optical network technologies, for example, the first transmission mode may be EPON, the second transmission mode may be 10EPON, and the third transmission mode may be 50EPON. Alternatively, the first transmission mode may be 10EPON, the second transmission mode may be 50EPON, and the third transmission mode may be XEPON, where X may be greater than 50.

[0132] It should be noted that the connector 100 may include more than two contact groups, for example, it may also include a third contact group, the second contact group 103 may be located between the first contact group 102 and the third contact group, and the first contact group 102, the second contact group 103 and the third contact group may be distributed in sequence along the first direction from the opening 1011 of the port 101 of the connector 100 to the other end of the connector 100. The three contact groups can further increase the number of pins of the connector 100, which can better meet the signal transmission volume requirements of multi-mode coexistence, and facilitate the evolution and upgrading of OLT equipment to a larger transmission mode.

[0133] Exemplarily, the pin definitions of the third contact group, the first contact group 102, and the second contact group 103 may be different to meet different transmission modes. For example, the first contact group 102 may be defined to be compatible with GPON and 10GPON transmission modes, the second contact group 103 may be defined to implement a 50GPON transmission mode, and the third contact group may be defined to implement an XGPON transmission mode.

[0134] Fig.12A schematic diagram of the structure of a plug-in module provided in an embodiment of the present application.

[0135] See also Fig.12 As shown, the embodiment of the present application further provides a multi-mode coexistence plug-in module 200 that cooperates with the connector. The plug-in module 200 may be the first plug-in module 300 mentioned above.

[0136] The plug-in module 200 may include a housing 200a, which may serve as the main load-bearing structural member of the entire plug-in module 200. In the embodiment of the present application, the length direction of the housing 200a is the same as the length direction of the connector housing, which is the first direction. Fig.12 The x direction in the figure is the same as the width direction of the housing 200a and the width direction of the connector housing, both of which are the second direction. Fig.12 In the y direction, the height direction of the housing 200a is the same as the height direction of the connector housing, both of which are the third direction. Fig.12 In the z direction, one end of the housing 200a along the first direction may have a plug-in end 201.

[0137] Fig.13 A cross-sectional schematic diagram of a plug-in module provided in an embodiment of the present application, wherein: Fig.13 The diagram shows a cross section of the plug-in module along the xz plane.

[0138] Combination Fig.13 As shown, a plurality of conductive groups may be provided on the plug-in end 201, such as a first conductive group 202 and a second conductive group 203. The first conductive group 202 and the second conductive group 203 both have conductive properties, and the first conductive group 202 and the second conductive group 203 may be electrically connected to the first contact group and the second contact group of the connector, thereby realizing signal transmission between the plug-in module 200 and the connector.

[0139] The first conductive group 202 and the second conductive group 203 are spaced apart and distributed along the first direction, and of the two conductive groups, the first conductive group 202 is disposed closer to the end surface of the plug-in end 201. When the plug-in module 200 is plugged and matched with the connector, the first conductive group 202 can be electrically connected to the second contact group, and the second conductive group 203 can be electrically connected to the first contact group.

[0140] The first conductive group 202 may include a plurality of first upper conductive parts 212 and a first lower conductive part 222, and the second conductive group 203 may include a plurality of second upper conductive parts 213 and a second lower conductive part 223. Each of the first upper conductive part 212, the first lower conductive part 222, the second upper conductive part 213 and the second lower conductive part 223 may be used as an electrical connection pin, respectively, for electrically contacting and connecting with the connector. The number of pins on the plug-in terminal 201 is increased by the first conductive group 202 and the second conductive group 203, thereby meeting the signal transmission volume requirements of multi-mode coexistence, so that the plug-in module 200 can realize multi-mode coexistence and serve as a multi-mode coexistence plug-in module, which is conducive to the evolution and upgrade of OLT equipment.

[0141] For example, the number of PINs of the first conductive group 202 and the second conductive group 203 can be the same, such as 20 PINs corresponding to the conventional SFP+ module, then the plug-in module 200 can achieve 40 PINs. The plug-in module 200 can at least meet the signal transmission volume requirements of the three transmission modes of GPON, 10GPON, and 50GPON, and achieve the compatible coexistence of GPON, 10GPON, and 50GPON, forming a GPON / 10GPON / 50GPON three-mode coexistence plug-in module.

[0142] Accordingly, since the first conductive group 202 and the second conductive group 203 are spaced apart in the length direction, compared with the conventional SFP+ or DSFP module, the additional second conductive group 203 is distributed in the length direction, which has a small impact on the width and height of the plug-in end 201 of the plug-in module 200, and can also meet the requirements of the plug-in module 200 and the above-mentioned multi-mode coexisting connector. In addition, the packaging of the plug-in module 200 can also adopt the conventional SFP+ module or DSFP module packaging form, which has high applicability and is easy to produce and promote.

[0143] The pin PIN definitions of the first conductive group 202 and the second conductive group 203 may be different to meet different transmission modes. For example, the first conductive group 202 may be defined to implement the third transmission mode, and the second conductive group 203 may be defined to be compatible with implementing at least one of the first transmission mode and the second transmission mode. For example, the first conductive group 202 may be defined to implement the 50GPON transmission mode, and the second conductive group 203 may be defined to be compatible with implementing the two transmission modes of GPON and 10GPON.

[0144] When the plug-in end 201 of the plug-in module 200 is plugged into the port of the connector, the plug-in end 201 is plugged into the second plug-in position 101a of the port 101, and the first conductive group 202 can be electrically connected to the second contact group to form a second transmission path to achieve a third transmission mode, and the second conductive group 203 can be electrically connected to the first contact group to form a first transmission path to achieve at least one of the first transmission mode and the second transmission mode, so that the plug-in module 200 can meet the transmission requirements of at least one of the first transmission mode and the second transmission mode, as well as the third transmission mode, thereby achieving multi-mode compatible coexistence of the plug-in module 200.

[0145] It should be noted that the second conductive group 203 can be defined as being compatible with both the first transmission mode and the second transmission mode, and the second conductive group 203 is electrically connected to the connector, and can be compatible with the first transmission mode and the second transmission mode. Alternatively, in some other examples, the second conductive group 203 can also be defined as only implementing the first transmission mode, and the second conductive group 203 is electrically connected to the connector, and can implement the first transmission mode. Alternatively, the second conductive group 203 can also be defined as only implementing the second transmission mode, and the second conductive group 203 is electrically connected to the first plug-in module, and can implement the second transmission mode.

[0146] In the embodiment of the present application, taking the second conductive group 203 as an example of being defined as compatible with the first transmission mode and the second transmission mode, the second conductive group 203 is electrically connected to the first contact group of the connector to form a first transmission path, the first transmission path is used to implement the first transmission mode and the second transmission mode, and the first conductive group 202 is electrically connected to the second contact group to form a second transmission path to implement the third transmission mode. That is, the plug-in module 200 can be compatible with the first transmission mode, the second transmission mode and the third transmission mode through the first conductive group 202 and the second conductive group 203, and meet the transmission requirements of the three transmission modes of the first transmission mode, the second transmission mode and the third transmission mode.

[0147] It is understandable that the plug-in module 200 may include more than two conductive groups, and the number of conductive groups of the plug-in module 200 and the number of contact groups of the connector may correspond.

[0148] The following uses the first transmission mode being GPON, the second transmission mode being 10GPON, and the third transmission mode being 50GPON as an example to illustrate examples of matching scenarios between the connector and different plug-in modules.

[0149] Fig.14 A schematic diagram of a plug-in process between a second plug-in module and a connector provided in an embodiment of the present application.

[0150] For example, the connector is plugged into the second plug-in module, see Fig.14As shown, the second plug-in module is a conventional SFP+ plug-in module 10a, and the plug-in module 10a may include 10 upper conductive parts 10a3, and the plug-in module 10a may also include 10 lower conductive parts (not shown in the figure), so that the plug-in module 10a has a 20 PIN number. Correspondingly, the first contact group 102 of the connector 100 may include 10 first upper contact parts 112, and the connector 100 may also include 10 first lower contact parts (not shown in the figure), and the connector 100 also has a 20 PIN number.

[0151] The 20 pins of the plug-in module 10a can be defined as compatible with both GPON and 10GPON transmission modes. The 20 pins of the connector 100 can also be defined as compatible with both GPON and 10GPON transmission modes.

[0152] Of course, in some other examples, the 20 PIN number of the plug-in module 10a can also be defined as the GPON transmission mode or the 10GPON transmission mode, and the 20 PIN number of the connector 100 can also be correspondingly defined as the GPON transmission mode or the 10GPON transmission mode.

[0153] Fig.15 A schematic diagram of the plug-in cooperation between a second plug-in module and a connector provided in an embodiment of the present application.

[0154] See also Fig.15 As shown, the plug-in end 10a1 of the plug-in module 10a is plugged into the second plug-in position 101a of the port 101, so that the upper conductive part 10a3 and the lower conductive part of the plug-in module 10a are electrically connected to the first contact group 102 respectively, forming a first transmission path, which is compatible with both GPON and 10GPON transmission modes.

[0155] Fig.16 A schematic diagram of the plug-in process of a plug-in module and a connector provided in an embodiment of the present application.

[0156] Alternatively, the connector is plugged into the first plug-in module, see Fig.16 As shown, the first plug-in module 300 is the above-mentioned multi-mode coexistence plug-in module 200, and the first conductive group 202 of the plug-in module 200 may include 10 first upper conductive parts 212, and the first conductive group 202 may also include 10 first lower conductive parts 222 (not shown in the figure), and the second conductive group 203 may also include 10 second upper conductive parts 213, and the second conductive group 203 may also include 10 second lower conductive parts 223 (not shown in the figure), so that the first conductive group 202 has 20PINs and the second conductive group 203 also has 20PINs.

[0157] The 20 PINs of the first conductive group 202 may be defined as a 50 GPON transmission mode, and the 20 PINs of the second conductive group 203 may be defined as compatible with GPON and 10 GPON transmission modes.

[0158] Correspondingly, the first contact group 102 of the connector 100 may include 10 first upper contact portions 112, and the first contact group 102 may also include 10 first lower contact portions (not shown in the figure), and the second contact group 103 may include 10 second upper contact portions 113 and 10 second lower contact portions (not shown in the figure), so that the first contact group 102 has 20PINs and the second contact group 103 has 20PINs.

[0159] Correspondingly, the first contact group 102 may be defined as being compatible with the GPON and 10GPON transmission modes, and the second contact group 103 may be defined as being compatible with the 50GPON transmission mode.

[0160] Fig.17 A schematic diagram of the connection between a plug-in module and a connector provided in an embodiment of the present application.

[0161] See also Fig.17 As shown, the plug-in end 201 of the plug-in module 200 is plugged into the first plug-in position 101b of the port 101, so that the first conductive group and the second contact group 103 are electrically connected to form a third transmission path, and the third transmission path can meet the 50GPON transmission mode. The second conductive group and the first contact group 102 are electrically connected to form a second transmission path, and the second transmission path is compatible with GPON and 10GPON transmission modes.

[0162] The following takes the plugging of the connector and the multi-mode coexistence plug-in module as an example, and describes in detail the structures of the first contact group and the second contact group in the connector in conjunction with the accompanying drawings.

[0163] Fig.18 A schematic structural diagram of a first contact group and a second contact group in a connector provided in an embodiment of the present application.

[0164] The first contact group and the second contact group may be formed by a conductive structure provided in the connector. Fig.18 As shown, the connector may have a first terminal group 102a, and the first terminal group 102a may include a plurality of first upper terminals 112a and a plurality of first lower terminals 122a. The first upper terminal 112a and the first lower terminal 122a may both be conductive structural members, and the first upper terminal 112a and the first lower terminal 122a may be structural members formed of conductive materials, for example, the first upper terminal 112a and the first lower terminal 122a may be metal sheet structures formed of metals such as copper and aluminum or metal alloys.

[0165] One end of the first upper terminal 112a may have a first upper contact portion 112 extending into the port, and the other end of the first upper terminal 112a may have a first upper connection portion 152 electrically connected to the circuit board.

[0166] One end of the first lower terminal 122a may have a first lower contact portion 122 extending into the port, and the other end of the first lower terminal 122a may have a first lower connection portion 153 electrically connected to the circuit board.

[0167] Multiple first upper terminals 112a and first upper contact portions 112 may be spaced apart along the second direction, multiple first lower terminals 122a and first lower contact portions 122 may be spaced apart along the second direction, and multiple first upper contact portions 112 and multiple first lower contact portions 122 may form the above-mentioned first contact group 102.

[0168] Furthermore, the plurality of first upper terminals 112a and the plurality of first lower terminals 122a are arranged relatively along the third direction, so that the plurality of first upper contact portions 112 and the plurality of first lower contact portions 122 are respectively located on opposite sides of the port along the third direction, and a first plugging gap 132 can be formed between the plurality of first upper contact portions 112 and the plurality of first lower contact portions 122. When the plug-in terminal is plugged into the port 101, the plug-in terminal can be inserted into the first plugging gap 132, so as to facilitate the electrical connection between the plug-in terminal and the first contact group 102. Furthermore, the first upper contact portions 112 and the first lower contact portions 122 are respectively distributed on opposite sides of the port along the third direction, and the width of the entire connector can be reduced under the condition of increasing the number of PINs of the connector, so as to facilitate the high-density layout on the OLT device and improve the transmission performance.

[0169] Exemplarily, to facilitate electrical contact connection between the first upper contact portion 112 and the first lower contact portion 122 and the plug-in module, the first upper contact portion 112 and the first lower contact portion 122 can be shaped into a raised bent shape, and the first upper contact portion 112 and the first lower contact portion 122 can be raised and bent toward the first plug-in gap 132.

[0170] Accordingly, see Fig.18 As shown, the connector may also have a second terminal group 103a, and the second terminal group 103a may include a plurality of second upper terminals 113a and a plurality of second lower terminals 123a. The second upper terminals 113a and the second lower terminals 123a may both be conductive structural members, and the second upper terminals 113a and the second lower terminals 123a may be structural members formed of conductive materials. For example, the second upper terminals 113a and the second lower terminals 123a may also be metal sheet structures formed of metals such as copper and aluminum or metal alloys.

[0171] One end of the second upper terminal 113 a has a second upper contact portion 113 , and the second upper contact portion 113 extends into the port. The other end of the second upper terminal 113 a may also be electrically connected to the circuit board.

[0172] One end of the second lower terminal 123 a has a second lower contact portion 123 , and the second lower contact portion 123 extends into the port. The other end of the second lower terminal 123 a may also be electrically connected to the circuit board.

[0173] The plurality of second upper terminals 113a and second upper contact portions 113 may be spaced apart along the second direction, the plurality of second lower terminals 123a and second lower contact portions 123 may be spaced apart along the second direction, and the plurality of second upper contact portions 113 and the plurality of second lower contact portions 123 may form the second contact group 103 described above.

[0174] Among them, the plurality of first upper contact parts 112 and the plurality of second upper contact parts 113 can be located on the same side, and the plurality of second lower contact parts 123 and the plurality of first lower contact parts 122 can be located on the same side, so that the plurality of second upper contact parts 113 and the plurality of second lower contact parts 123 are distributed on the two opposite sides of the port along the third direction, and a second plug-in gap 133 for the plug-in end to be inserted can be formed between the plurality of second upper contact parts 113 and the plurality of second lower contact parts 123, so that when the plug-in end is plugged into the port 101, the second conductive group on the plug-in end can be electrically connected to the first contact group 102, and the first conductive group can also be electrically connected to the second contact group 103, so as to facilitate the electrical connection between the connector and the plug-in module. It can also ensure that the port of the connector has a smaller width and height size, and realize its high-density layout on the OLT device under the condition of ensuring the multi-PIN number design of the connector, and it is also conducive to ensuring that the connector can be a conventional SFP+ or DSFP module connector packaging form, ensuring production and promotion.

[0175] It is understandable that, in order to ensure smoothness of the plug-in module, the first plug-in gap 132 and the second plug-in gap 133 can be arranged in sequence in the first direction to reduce or avoid mutual interference between the first terminal group 102a and the second terminal group 103a. Fig.18 As shown, the first upper terminal 112a may also include a first avoidance portion 142, the first end of the first avoidance portion 142 may be connected to the first upper contact portion 112, the second end of the first avoidance portion 142 may be connected to the first upper connecting portion 152, and the second end of the first avoidance portion 142 may be inclined relative to the first end in a direction away from the first lower terminal 122a to increase the distance between the first upper connecting portion 152 and the first lower terminal 122a and increase the accommodating space to facilitate the setting of the second terminal group 103a and ensure the smoothness of the plug-in.

[0176] Correspondingly, the second lower terminal 123a may include a second avoidance portion 143, the second avoidance portion 143 may be located between the second upper contact portion 113 and the first lower connecting portion 153, the first end of the second avoidance portion 143 is connected to the second upper contact portion 113, the second end of the second avoidance portion 143 is connected to the first lower connecting portion 153, and the second end of the second avoidance portion 143 may be inclined relative to the first end in a direction away from the first upper terminal 112a to increase the distance between the first lower connecting portion 153 and the first upper terminal 112a, further increase the accommodating space, facilitate the setting of the second terminal group 103a, and ensure the smoothness of the plug-in.

[0177] Among them, the number of the first upper contact portions 112 and the first lower contact portions 122 can be the same, and correspondingly, the number of the second upper contact portions 113 and the second lower contact portions 123 can also be the same, so that the first contact group 102 and the second contact group 103 both have a high design symmetry, which is convenient for achieving electrical connection with the plug-in module and facilitating the packaging and assembly of the connector.

[0178] It can be understood that the number of PINs in the first contact group 102 and the second contact group 103 can be the same, that is, the number of the first upper contact portion 112, the first lower contact portion 122, the second upper contact portion 113 and the second lower contact portion 123 can be the same, which can reduce or avoid the impact of the increase in the second contact group 103 on the port width and height of the connector, reduce the design difficulty, and facilitate the packaging and assembly of the connector.

[0179] Of course, in some other examples, the number of PINs in the first contact group 102 and the second contact group 103 may also be different. For example, the total number of second upper contact portions 113 and second lower contact portions 123 in the second contact group 103 may be smaller than the total number of first upper contact portions 112 and first lower contact portions 122 in the first contact group 102.

[0180] Alternatively, the total number of the second upper contact portion 113 and the second lower contact portion 123 may be slightly greater than the total number of the first upper contact portion 112 and the first lower contact portion 122, which can enrich the structural design of the connector and help improve the transmission performance. For example, the total number of the second upper contact portion 113 and the second lower contact portion 123 may be 22PIN, and the total number of the first upper contact portion 112 and the first lower contact portion 122 may be 20PIN, so that the width of the second upper contact portion 113 and / or the second lower contact portion 123 can be slightly smaller than the width of the first upper contact portion 112 and / or the first lower contact portion 122, so as to reduce or avoid the influence of the increase of the second contact group 103 on the size of the connector port.

[0181] In the embodiment of the present application, an example is taken in which the PIN numbers of the first contact group 102 and the second contact group 103 are the same for description.

[0182] For example, the number of the first upper contact portion 112 and the number of the first lower contact portion 122 may be 10 (see Fig.18 As shown), the first contact group 102 has 20 pins, the number of the second upper contact portion 113 and the second lower contact portion 123 can be 10 respectively, the second contact group 103 has 20 pins, and the connector can achieve 40 pins. The connector can adopt the packaging form of a conventional SFP+ module connector to form a double-row SFP+ connector (small form-factor pluggable-doubledensity, referred to as SFP-DD connector), which can be matched with a conventional SFP+ module to meet the GPON and 10GPON transmission modes, and can also be matched with a plug-in module that coexists with GPON / 10GPON / 50GPON to be compatible with the three transmission modes of GPON, 10GPON, and 50GPON.

[0183] Taking the example that the first contact group 102 is defined as compatible with GPON and 10GPON transmission modes, and the second contact group 103 is defined as 50GPON transmission mode, the following Table 1 shows an example of the definition of each pin in the connector 100.

[0184] Table 1 is the definition of each pin in a connector provided in an embodiment of the present application.

[0185]

[0186]

[0187] Among them, in Table 1, 1-10 are definitions of 10 first upper contact portions 112 arranged in sequence along the second direction, 11-20 are definitions of 10 first lower contact portions 122 arranged in sequence along the second direction, 21-30 are definitions of 10 second upper contact portions 113 arranged in sequence along the second direction, and 31-40 are definitions of 10 second lower contact portions 123 arranged in sequence along the second direction. G_TX+ and G_TX- are a pair of output data signals in GPON transmission, G_RX- and G_RX+ are a pair of input data signals in GPON transmission, GND is a ground signal, Control I / O is an input / output control signal, SDA is a bidirectional data signal, SCL is a clock signal, VCC is a power supply voltage signal, 10G_TX+ and 10G_TX- are a pair of output data signals in 10GPON transmission, 10G_RX- and 10G_RX+ are a pair of input data signals in 10GPON transmission, 50G_TX+ and 50G_TX- are a pair of output data signals in 50GPON transmission, and 50G_RX- and 50G_RX+ are a pair of input data signals in 50GPON transmission.

[0188] Fig.19 A schematic diagram of another connector provided in an embodiment of the present application.

[0189] Alternatively, see Fig.19 As shown, the number of the first upper contact portion 112 and the first lower contact portion 122 can be 11 respectively, and the first contact group 102 has 22 PINs. Correspondingly, the number of the second upper contact portion 113 (not shown in the figure) and the second lower contact portion 123 (not shown in the figure) can be 11 respectively, and the second contact group 103 has 22 PINs. The connector 100 can achieve 44 PINs, with a large number of PINs, which is conducive to improving transmission performance. The connector 100 can adopt the packaging form of a conventional DSFP module connector to form a double-row DSFP connector, which can also be called a next generation small form factor pluggables-double density, referred to as NGSFP-DD connector, which can be matched with a conventional DSFP module to meet the GPON and 10GPON transmission modes, and can also be matched with a plug-in module for the coexistence of GPON / 10GPON / 50GPON to be compatible with the three transmission modes of GPON, 10GPON, and 50GPON, and has relatively high production convenience and promotion applicability.

[0190] Taking the example that the first contact group 102 is defined as compatible with GPON and 10GPON transmission modes, and the second contact group 103 is defined as meeting the 50GPON transmission mode, the following Table 2 shows an example of the definition of each pin in the connector.

[0191] Table 2 is the definition of each pin in another connector provided in an embodiment of the present application.

[0192]

[0193]

[0194] In Table 2, 1-11 are definitions of 11 first upper contact portions 112 arranged in sequence along the second direction, 12-22 are definitions of 11 first lower contact portions 122 arranged in sequence along the second direction, 23-33 are definitions of 11 second upper contact portions 113 arranged in sequence along the second direction, and 34-44 are definitions of 11 second lower contact portions 123 arranged in sequence along the second direction. The explanation of each defined signal can be found in Table 1.

[0195] The structures of the first conductive group and the second conductive group of the multi-mode coexistence plug-in module are described in detail below with reference to the accompanying drawings.

[0196] Fig. 20 A schematic front view of a plug-in module provided in an embodiment of the present application, Fig.21 A schematic rear view of a plug-in module provided in an embodiment of the present application.

[0197] Among them, combined Fig. 20 and Fig.21 As shown, the first conductive group 202 may include a plurality of first upper conductive portions 212 and a plurality of first lower conductive portions 222 . The plurality of first upper conductive portions 212 may be spaced apart along the second direction, and the plurality of first lower conductive portions 222 may also be spaced apart along the second direction.

[0198] The plurality of first upper conductive portions 212 and the plurality of first lower conductive portions 222 may be respectively located on two opposite sides of the plug end 201 in the height direction (see Fig.13 As shown), when the plug-in end 201 is plugged into the port of the connector, the first upper conductive portion 212 is electrically connected to the second upper contact portion, and the first lower conductive portion 222 is electrically connected to the second lower contact portion, thereby achieving electrical connection between the first conductive group 202 and the second contact group.

[0199] Exemplarily, the plug-in module 200 may further include a second circuit board, a portion of which may extend and protrude to one end of the plug-in module 200 housing to form a plug-in end 201, and the first upper conductive portion 212 and the first lower conductive portion 222 may be conductive structural members formed on both sides of the plug-in end 201, such as the first upper conductive portion 212 and the first lower conductive portion 222 may be laminar structures formed on both sides of the second circuit board by metals such as copper and aluminum or metal alloys.

[0200] Accordingly, continue to combine Fig. 20 and Fig.21 As shown, the second conductive group 203 may include a plurality of second upper conductive portions 213 and a plurality of second lower conductive portions 223 . The plurality of second upper conductive portions 213 may be spaced apart along the second direction, and the plurality of second lower conductive portions 223 may also be spaced apart along the second direction.

[0201] The plurality of second upper conductive portions 213 and the plurality of first upper conductive portions 212 are located on the same surface of the plug-in end 201, and the plurality of second lower conductive portions 223 and the plurality of first lower conductive portions 222 are located on the same surface of the plug-in end 201, which means that the plurality of second upper conductive portions 213 and the plurality of second lower conductive portions 223 can be respectively located on two opposite surfaces of the plug-in end 201 along the height direction, so that when the plug-in end 201 is plugged into the port of the connector, the second upper conductive portions 213 and the first upper contact portions are electrically contacted and connected, and the second lower conductive portions 223 and the first lower contact portions are electrically contacted and connected, thereby realizing electrical connection between the second conductive group 203 and the first contact group while realizing electrical connection between the first conductive group 202 and the second contact group. It can also ensure that the plug-in end 201 of the plug-in module 200 has smaller width and height dimensions, which is conducive to realizing a high-density layout of the plug-in module 200 in the OLT device while ensuring the multi-PIN design of the plug-in module 200. In addition, it can also facilitate the plug-in module 200 to adopt conventional SFP+ or DSFP packaging to ensure production and promotion.

[0202] The second upper conductive portion 213 and the second lower conductive portion 223 may also be conductive structural parts formed on both sides of the plug-in end 201, such as the second upper conductive portion 213 and the second lower conductive portion 223 may also be sheet structures formed by metals such as copper and aluminum or metal alloys on both sides of the second circuit board.

[0203] Among them, the number of the first upper conductive parts 212 and the first lower conductive parts 222 can be the same, and correspondingly, the number of the second upper conductive parts 213 and the second lower conductive parts 223 can also be the same, so that the first conductive group 202 and the second conductive group 203 have a higher design symmetry, which is convenient for achieving electrical connection with the connector and facilitating the packaging and assembly of the plug-in module 200.

[0204] The number of PINs of the first conductive group 202 and the second conductive group 203 can be the same, that is, the number of the first upper conductive part 212, the first lower conductive part 222, the second upper conductive part 213 and the second lower conductive part 223 can be the same, which is convenient for reducing or avoiding the influence of the increase of the second conductive group 203 on the width and height dimensions of the plug-in end 201, reducing the design difficulty, and also facilitating the packaging and assembly of the plug-in module 200.

[0205] Of course, in some other examples, the number of PINs in the first conductive group 202 and the second conductive group 203 may also be different. For example, the total number of the second upper conductive parts 213 and the second lower conductive parts 223 in the second conductive group 203 may be less than the total number of the first upper conductive parts 212 and the second lower conductive parts 223, or the total number of the second upper conductive parts 213 and the second lower conductive parts 223 may be slightly larger than the total number of the first upper conductive parts 212 and the first lower conductive parts 222, which is beneficial to enrich the structural design of the plug-in module 200 and to improve the transmission performance.

[0206] It can be understood that the number of PINs of the first conductive group 202 and the second conductive group 203 can be designed according to the number of PINs of the second contact group 103 and the first contact group 102 in the connector, the number of the first upper conductive parts 212 and the first lower conductive parts 222 in the first conductive group 202 can be respectively the same as the number of the second upper contact parts and the second lower contact parts in the second contact group, and the number of the second upper conductive parts 213 and the second lower conductive parts 223 in the second conductive group 203 can be respectively the same as the number of the first upper contact parts and the first lower contact parts in the first contact group.

[0207] In the embodiment of the present application, an example is taken in which the PIN numbers of the first conductive group 202 and the second conductive group 203 are the same for description.

[0208] For example, refer to Fig.21 As shown, the number of the first upper conductive part 212 and the first lower conductive part (not shown in the figure) can be 10 respectively, which makes the first conductive group 202 have 20PIN, the number of the second upper conductive part 213 and the second lower conductive part (not shown in the figure) can also be 10 respectively, the second conductive group 203 has 20PIN, and the plug-in module 200 can achieve 40PIN. The plug-in module 200 can adopt a conventional SFP+ packaging form to form a double-row SFP+ plug-in module (SFP-DD module), which can be matched with a three-mode coexisting SFP+ module connector to be compatible with the three transmission modes of GPON, 10GPON, and 50GPON, and has relatively high production convenience and promotion applicability.

[0209] Fig. 22 A schematic diagram of another plug-in module provided in an embodiment of the present application.

[0210] Alternatively, see Fig. 22As shown, the number of the first upper conductive part 212 and the first lower conductive part can be 11 respectively, the first conductive group 202 has 22 PINs, the number of the second upper conductive part 213 and the second lower conductive part can be 11 respectively, the second conductive group 203 has 22 PINs, and the plug-in module 200 can achieve 44 PINs, with more PINs, which is conducive to improving transmission performance. The plug-in module 200 can adopt a conventional DSFP packaging form to form a double-row DSFP plug-in module (NGSFP-DD module), which can be matched with a three-mode coexistence DSFP module connector to be compatible with GPON, 10GPON, and 50GPON three transmission modes, and has relatively high production convenience and promotion applicability.

[0211] An embodiment of the present application further provides a communication device, which may be the OLT device mentioned above. Of course, in some other examples, the communication device may also be other devices including a connector.

[0212] The communication device may include a circuit board and the connector mentioned above, the connector being fixed on the circuit board. Exemplarily, a plurality of connectors may be fixed on the circuit board, and the plurality of connectors may be distributed along the second direction (width direction) (refer to Fig.11 As shown in the figure, if at least 16 connectors can be fixed on the circuit board, a high-density layout of 16 ports on the communication device can be formed, which is beneficial to ensure the transmission quality.

[0213] The connector of the communication device can be plugged and matched with a conventional SFP+ module or DSFP module, such as to realize GPON transmission and / or 10GPON transmission. The connector of the communication device can also be plugged and matched with a multi-mode coexistence plug-in module to realize the compatible coexistence of multiple transmission modes. For example, the connector of the communication device can be matched with a GPON / 10GPON / 50GPON three-mode coexistence plug-in module, and is compatible with the three transmission modes of GPON, 10GPON, and 50GPON.

[0214] An embodiment of the present application also provides a communication device, which may include the above-mentioned connector and multi-mode coexistence plug-in module. The connector and the multi-mode coexistence plug-in module can be plugged in to achieve compatible coexistence of multiple transmission modes, for example, three transmission modes of GPON, 10GPON, and 50GPON can be achieved.

[0215] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances. The terms "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0216] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A connector, characterized in that: A housing is provided with a port, and the port is used for plugging and mating with a first plug-in module; A first contact group and a second contact group are provided in the port, the first contact group and the second contact group are spaced apart along a first direction, and the first contact group is provided adjacent to an opening of the port, the first direction is an insertion direction of the plug-in module in the port, and the port has a first plug-in position; The first plug-in module is plugged in the first plug-in position, the first contact group is used to electrically connect with the first plug-in module to form a first transmission path, the second contact group is used to electrically connect with the first plug-in module to form a second transmission path, the first transmission path is used to implement at least one of a first transmission mode and a second transmission mode, and the second transmission path is used to implement a third transmission mode.

2. The connector according to claim 1, characterized in that: The port is also used for plugging and matching with a second plug-in module, and a second plug-in position is provided in the port, the first plug-in position and the second plug-in position are distributed along the first direction, and the second plug-in position is arranged adjacent to the opening of the port; The second plug-in module is plugged into the second plug-in position, and the first contact group is used to be electrically connected to the second plug-in module to form a third transmission path, and the third transmission path is used to implement at least one of the first transmission mode and the second transmission mode.

3. The connector according to claim 1 or 2, characterized in that: The first contact group includes a plurality of first upper contact portions and a plurality of first lower contact portions, the plurality of first upper contact portions are spaced apart along the second direction, and the plurality of first lower contact portions are spaced apart along the second direction; The plurality of first upper contact portions and the plurality of first lower contact portions are respectively located on opposite sides of the port along a third direction, and a first plug-in gap for inserting a plug-in end of a plug-in module is formed between the plurality of first upper contact portions and the plurality of first lower contact portions, and the third direction, the second direction and the first direction are perpendicular to each other.

4. The connector according to claim 3, characterized in that: The second contact group includes a plurality of second upper contact portions and a plurality of second lower contact portions, wherein the plurality of second upper contact portions are spaced apart along the second direction, and the plurality of second lower contact portions are spaced apart along the second direction; The plurality of second upper contact portions and the plurality of first upper contact portions are located on the same side of the port, the plurality of second lower contact portions and the plurality of first lower contact portions are located on the same side of the port, and a second plugging gap for the plug end to be inserted is formed between the plurality of second upper contact portions and the plurality of second lower contact portions.

5. The connector according to claim 4, characterized in that: The number of the first upper contact portions is the same as the number of the first lower contact portions, and the number of the second upper contact portions is the same as the number of the second lower contact portions.

6. The connector according to claim 5, characterized in that: The number of the first upper contact portions, the first lower contact portions, the second upper contact portions, and the second lower contact portions are all the same.

7. The connector according to any one of claims 3 to 6, characterized in that: The number of the first upper contact portions and the number of the first lower contact portions are respectively 10.

8. The connector according to any one of claims 3 to 6, characterized in that: The number of the first upper contact portions and the number of the first lower contact portions are 11 respectively.

9. The connector according to any one of claims 4 to 6, characterized in that: The number of the second upper contact portions and the number of the second lower contact portions are respectively ten.

10. The connector according to any one of claims 4 to 6, characterized in that: The number of the second upper contacts and the number of the second lower contacts are 11, respectively.

11. The connector according to any one of claims 1 to 10, characterized in that: The pin definitions of the second contact group include GND, 50G_RX1-, 50G_RX1+, GND, VCC, VCC, GND, 50G_TX1-, 50G_TX1+, and GND.

12. The connector according to any one of claims 1 to 11, characterized in that: The first transmission mode is GPON or EPON.

13. The connector according to any one of claims 1 to 11, characterized in that: The second transmission mode is 10GPON or 10EPON.

14. The connector according to any one of claims 1 to 11, characterized in that: The third transmission mode is 50GPON or 50EPON.

15. A plug-in module, characterized in that: It comprises a plug-in end, and the plug-in end is used for plugging and mating with the connector according to any one of claims 1 to 14 above; The plug-in end is provided with a first conductive group and a second conductive group, the first conductive group and the second conductive group are spaced apart along a first direction, and the first conductive group is arranged adjacent to an end face of the plug-in end, and the first direction is an insertion direction of the plug-in end on the connector; The plug-in module is used to be plugged into the first plug-in position of the connector, the first conductive group is used to be electrically connected with the second contact group to form the second transmission path, and the second conductive group is used to be electrically connected with the first contact group to form the first transmission path.

16. The plug-in module according to claim 15, characterized in that The first conductive group includes a plurality of first upper conductive portions and a plurality of first lower conductive portions, the plurality of first upper conductive portions are spaced apart along the second direction, and the plurality of first lower conductive portions are spaced apart along the second direction; The plurality of first upper conductive parts and the plurality of first lower conductive parts are respectively located on two opposite surfaces of the plug-in end along a third direction, and the third direction, the second direction and the first direction are perpendicular to each other.

17. The plug-in module according to claim 16, characterized in that The second conductive group includes a plurality of second upper conductive portions and a plurality of second lower conductive portions, wherein the plurality of second upper conductive portions are spaced apart along the second direction, and the plurality of second lower conductive portions are spaced apart along the second direction; The plurality of second upper conductive parts and the plurality of first upper conductive parts are located on the same surface of the plug-in end, and the plurality of second lower conductive parts and the plurality of first lower conductive parts are located on the same surface of the plug-in end.

18. The plug-in module according to claim 17, characterized in that The number of the first upper conductive parts is the same as the number of the first lower conductive parts, and the number of the second upper conductive parts is the same as the number of the second lower conductive parts.

19. The plug-in module according to claim 18, characterized in that The number of the first upper conductive portion, the second upper conductive portion, the first lower conductive portion, and the second lower conductive portion are all the same.

20. The plug-in module according to any one of claims 16 to 19, characterized in that: The number of the first upper conductive portions and the number of the first lower conductive portions are respectively 10.

21. The plug-in module according to any one of claims 16 to 19, characterized in that: The number of the first upper conductive portions and the number of the first lower conductive portions are 11 respectively.

22. The plug-in module according to any one of claims 17 to 19, characterized in that: The number of the second upper conductive portions and the number of the second lower conductive portions are respectively 10.

23. The plug-in module according to any one of claims 17 to 19, characterized in that: The number of the second upper conductive portions and the number of the second lower conductive portions are 11 respectively.

24. A communication device, characterized in that: It comprises a circuit board and the connector according to any one of claims 1 to 14, wherein the connector is fixed on the circuit board, and the first contact group and the second contact group are electrically connected to the circuit board respectively.

25. The communication device according to claim 24, characterized in that A plurality of the connectors are fixed on one circuit board, and the plurality of the connectors are distributed along the second direction.

26. The communication device according to claim 25, characterized in that The number of the connectors is 16.

27. A communication device, characterized in that: It comprises a connector and a plug-in module, wherein the connector is the connector according to any one of claims 1 to 14 above; Alternatively, the connector is the connector described in any one of claims 1-14, and the plug-in module is the plug-in module described in any one of claims 15-26.

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