CN116027494A

CN116027494A - Optical switching device and optical module test system

Info

Publication number: CN116027494A
Application number: CN202111243327.8A
Authority: CN
Inventors: 唐新平; 孙汕; 高鹏; 张云
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2023-04-28
Also published as: WO2023071009A1

Abstract

The embodiment of the invention relates to the technical field of optical communication, and discloses an optical switching device, which comprises: the device comprises an insertion box with an opening and a cover plate for closing the opening, wherein the cover plate closes the opening and the insertion box to form a cavity; the back plate is positioned in the cavity, a plurality of slots are formed in the inner wall of the plug box, a plurality of main control modules and power modules which are connected with signals of the back plate and an optical switch module which is detachably connected with the back plate are respectively arranged in the slots, and the main control modules monitor the states of the power modules and the optical switch modules through the back plate. The optical switching device and the optical module testing system provided by the embodiment of the invention can configure the input/output interface of the optical switching device according to the requirements, and can be flexibly applicable to different application scenes.

Description

Optical switching device and optical module test system

Technical Field

The embodiment of the application relates to the technical field of optical communication, in particular to an optical switching device and an optical module testing system.

Background

Along with the development of communication networks to high speed and high bandwidth, communication equipment also develops to high integration, the port speed of an optical module of the communication equipment is higher and higher, and the port density is also higher and higher.

In order to ensure the quality of the optical signal functional part in the produced communication equipment, various performance indexes of the optical signal are required to be tested, but once the existing optical switch device for testing is fixed in a factory structure, the number of input/output interfaces is fixed, the requirement on the flexibility of the input/output interfaces cannot be met, and the optical switch device can only be used in specific application scenes.

Disclosure of Invention

The main objective of the embodiments of the present application is to provide an optical switching device and an optical module testing system, which can configure an input/output interface of the optical switching device according to requirements, and can be flexibly applied to different application scenarios.

To achieve the above object, an embodiment of the present application provides an optical switching device, including: the device comprises an insertion box with an opening and a cover plate for closing the opening, wherein the cover plate closes the opening and the insertion box to form a cavity; the back plate is positioned in the cavity, a plurality of slots are formed in the inner wall of the plug box, a plurality of main control modules and power modules which are connected with signals of the back plate and an optical switch module which is detachably connected with the back plate are respectively arranged in the slots, and the main control modules monitor the states of the power modules and the optical switch modules through the back plate.

To achieve the above object, an embodiment of the present application further provides an optical module testing system, including: the optical switch device comprises a tested optical module, a test instrument and a plurality of optical switch devices, wherein the optical switch devices comprise a front optical switch module and a rear optical switch module; the optical switch devices are connected in series, and the optical switch devices comprise a head end optical switch device connected with the tested optical module and a tail end optical switch device connected with the test instrument; the third optical fiber connection unit of the former optical switching device is in optical signal connection with the first optical fiber connection unit of the latter optical switching device through a connection line along the extending direction from the head end optical switching device to the tail end optical switching device, so that the second input public port of the former optical switching device is in optical signal connection with the first input public port of the latter optical switching device; and the number of the second input common ports of the former optical switching device is the same as the number of the first input common ports of the latter optical switching device.

The optical switch device comprises an insertion box with an opening, a cover plate with a closed opening, wherein the cover plate is used for closing the opening and the insertion box to form a cavity, a plurality of slots are formed in the inner wall of the insertion box, and an optical switch module detachably connected with a back plate is further arranged in the plurality of slots. When in use, the optical switch modules with different numbers of input/output interfaces can be configured according to the actual demands of the numbers of the input/output interfaces, so that the optical switch modules are flexibly applicable to different application scenes.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings.

FIG. 1 is a schematic diagram of the internal structure of an embodiment of an optical switching device of the present invention;

FIG. 2 is a schematic diagram of the main control module in an embodiment of the optical switching apparatus of the present invention;

FIG. 3 is a schematic diagram of a front-side optical switch module in an embodiment of an optical switching apparatus of the present invention;

FIG. 4 is a schematic diagram of a self-loopback connection of a front jack optical switch module in an embodiment of an optical switching device of the present invention;

FIG. 5 is a schematic diagram of a post-insertion optical switch module in an embodiment of an optical switching apparatus of the present invention;

FIG. 6 is an exemplary diagram of an embodiment of an optical switching device of the present invention;

FIG. 7 is a schematic diagram illustrating the connection of the front optical switch module and the rear optical switch module to form an optical switch matrix in an embodiment of the optical switch device of the present invention;

fig. 8 is an exemplary diagram of an embodiment of an optical module testing system of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, as will be appreciated by those of ordinary skill in the art, in the various embodiments of the present application, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementation of the present application, and the embodiments may be mutually combined and referred to without contradiction.

An embodiment of the present application provides an optical switching device, as shown in fig. 1, including an insert box 100 having an opening, and a cover plate (not shown in the drawing) closing the opening, where the cover plate closes the opening to form a cavity with the insert box 100; the back plate 104 is located in the cavity, a plurality of slots (not shown in the drawing) are arranged on the inner wall of the plug box 100, a main control module 101 and a power module 105 which are connected with the back plate 104 in a signal mode and an optical switch module 10 which is detachably connected with the back plate 104 are respectively arranged in the slots, and the main control module 101 monitors the states of the power module 105 and the optical switch module 10 through the back plate 104.

As shown in fig. 2, the main control module 101 includes a processor unit 201, a programmable logic unit 202, a communication interface unit 203, and a main control back board interface unit 204, where the main control module 101 implements communication information interaction with the background through the communication interface unit 203, and receives a command issued by the background; the processor unit 201 obtains the command request to process and returns the result or status content to the background by using the communication interface unit 203; the processor unit 201 can call the programmable logic unit 202 to process data according to the need when processing according to the command requirement; the main control module 101 monitors the power module 105 and the optical switch module 10 through the main control back board interface unit 204. The power module 105 implements the operating power required to convert external ac or dc power to other modules within the optical switching device door.

A back plate 104 is mounted in the jack 100, and the back plate 104 enables interconnection of the main control module 101, the power supply module 105, and the optical switch module 10 in the optical switch device. The main control module 101 and the power module 105 are fixedly connected or detachably connected with the back plate 104, and the main control module 101 and the power module 105 can communicate with other modules on the back plate through the back plate when being connected with the back plate 104. The optical switch module 10 is detachably connected with the back plate 104, so that the optical switch module 10 can be configured with the main control module, the back plate 104 and the power module 105 only by being inserted into the plug box 100 along the slot. And when the optical switch module 10 is connected with the back plate 104, the optical switch module can communicate with other modules on the back plate through the back plate, and the main control module 101 can monitor the states of the power module 105 and the optical switch module 10 through the back plate 104. When in use, the optical switch modules 10 with different numbers of input/output interfaces can be configured according to the actual demands of the numbers of the input/output interfaces, so that the optical switch modules are flexibly applicable to different application scenes.

Optionally, as shown in fig. 1, a fan module 106 may be further disposed in the plurality of slots, where the fan module 106 is composed of a fan and a control unit, and has an automatic speed regulation function, so as to implement a heat dissipation function. Optionally, the back plate 104 may include a plurality of fixation slots, such as: a back plate 104 may be provided with a fixing slot of the main control module 101, a fixing slot of the power supply module 105, one or more fixing slots of the fan module 106, and a plurality of fixing slots of the optical switch module 10, where the number of fixing slots may be designed according to actual requirements.

In one example, as shown in fig. 3, the optical switch module 10 includes at least one front plug optical switch module 102 located on one side of a back plate 104; the front plug optical switch module 102 includes a plurality of first optical switches, each first optical switch including: the first input common port and the first output common port of each first optical switch are connected with an optical fiber connector; further comprises: the first optical fiber connection unit 302 and the second optical fiber connection unit 305, which are respectively formed by fixedly connecting a plurality of optical fiber connectors, are arranged in the first optical fiber connection unit 302, the first output common port is arranged in the second optical fiber connection unit 305, and one side of the first optical fiber connection unit 302, which is not connected with the first input common port, is exposed outside the plug box 100.

Specifically, at least one front-plug optical switch module 102 is disposed on one side of the back plate 104, where the front-plug optical switch module 102 includes a first optical switch array 301 formed by a plurality of first optical switches, each first optical switch includes a first input common port and a first output common port, one first optical switch may be a 1*N optical switch, 1 indicates that the first optical switch includes one first input common port, N indicates that the first optical switch includes N first output common ports, where N is a positive integer. The front-plug optical switch module 102 includes m first optical switches, and the front-plug optical switch module 102 includes m first input common ports and m×n first output common ports in total, where m is a positive integer. Each first input common port in the front optical switch module 102 is externally connected with an optical fiber connector, and each first output common port is externally connected with an optical fiber connector.

The optical fiber connector is a device for detachably (movably) connecting optical fibers, and precisely connects two end surfaces of the optical fibers so that the light energy output by the transmitting optical fiber can be coupled into the receiving optical fiber to the maximum extent. One fiber optic connector typically includes two ports, one port for inserting a transmitting optical fiber and the other port for inserting a receiving optical fiber, and a fiber optic connector at the end of the optical fiber may facilitate insertion and removal of the optical fiber from the fiber optic connector. The front optical switch module 102 in this embodiment further includes a first optical fiber connection unit 302 formed by fixedly connecting a plurality of optical fiber connectors, where m first input common ports are located in the ports of the optical fiber connectors of the first optical fiber connection unit 302; the optical fiber connector further comprises a second optical fiber connection unit 305 formed by fixedly connecting a plurality of optical fiber connectors, and m×n first output common ports are positioned in ports of the optical fiber connectors of the second optical fiber connection unit 305. One side of the first optical fiber connection unit 302, which is not connected to the first input common port, is exposed outside the socket 100, so that a tester can conveniently connect and test the first input common port by using a connection line from the outside.

In this embodiment, the first optical fiber connection unit 302 or the second optical fiber connection unit 305 is placed at a desired position according to actual needs, and the first optical fiber connection unit 302 and the second optical fiber connection unit 305 are connected by external connection wires according to test needs, so as to be suitable for different application scenarios. For example: the external connection wires are adopted to interconnect the optical fiber connectors of the second optical fiber connection unit 305, and the m×n first output common ports of the same front-plug optical switch module 102 are interconnected, so that the self-loop back of the front-plug optical switch module 102 can be realized. Also for example: when there are multiple front plug optical switch modules 102, an external connection line is adopted to cascade between the second optical fiber connection unit 305 of one front plug optical switch module 102 and the second optical fiber connection unit 305 of another front plug optical switch module 102, compared with the existing cascade connection mode adopting fiber melting, in this embodiment, the first input common port and the first output common port are both externally connected with optical fiber connectors, so that connection or disconnection of certain two optical fiber connectors can be conveniently realized, and the optical fiber connectors are adopted to cascade between the front plug optical switch modules 102, so that the cascade connection relationship is not fixed, and cascade connection can be carried out according to actual needs to realize optical switch devices with different topological structures. In a word, the optical switching device of the embodiment has the characteristics of strong application scene adaptability, strong expandability and the like, and can realize optical switching devices with different topological structures; and the idle optical switch devices can be disassembled and reassembled according to the current application scene to form the optical switch device with a new topological structure, so that the cost is saved.

Optionally, as shown in fig. 3, the front-plug optical switch module 102 further includes a first optical switch control unit 303 and a first backplane interface unit 304, where the first backplane interface unit 304 is configured to dock with the backplane 104 to achieve detachable connection; the first optical switch control unit 303 receives a switching command sent by the main control module 101 through the back board 104 through the first back board interface unit 304 to control the optical switch to switch. The first optical switch control unit 303 is connected to the first optical switch and is used to control the switching of the channels in the first optical switch, for example: assuming that the first optical switch is a 1*2 optical switch and includes 1 first input common port and 2 first output common ports (No. 1 and No. 2), the first optical switch includes 2 channels therein, one channel is from the first input common port to the No. 1 first output common port, and the other channel is from the first input common port to the No. 2 first output common port, and the switching of the two channels in the first optical switch can be achieved by using the first optical switch control unit 303. The first optical switch control unit 303 may include a plurality of first optical switch controllers, each of which may correspondingly control one or more first optical switches.

Alternatively, the first optical fiber connection unit 302 and the second optical fiber connection unit 305 may be fixed on a panel of the jack 100, and after the front optical switch module 102 is placed in the jack 100, the first input common port is inserted into the first optical fiber connection unit 302 fixed on the panel of the jack 100, and the first output common port is inserted into the second optical fiber connection unit 305 fixed on the panel of the jack 100. Alternatively, the first optical fiber connection unit 302 is fixed on the panel of the jack 100, and the second optical fiber connection unit 305 is integrated with the front jack module 102; when the second optical fiber connection unit 305 is integrated with the front optical switch module 102, the first output normal port can be kept inserted into the second optical fiber connection unit 305, and when the front optical switch module 102 is taken out from the jack 100, only the first input common port inserted into the first optical fiber connection unit 302 is required to be pulled out, and the first output normal port is not required to be pulled out from the second optical fiber connection unit 305.

Alternatively, as shown in fig. 3, the first optical fiber connection unit 302 and the second optical fiber connection unit 305 may be integrated with the front plug optical switch module 102. For example: the first optical fiber connection unit 302 and the second optical fiber connection unit 305 are embedded on the surface panel of the front plug optical switch module 102, and one side of the first optical fiber connection unit 302, which is not connected with the first input common port, is exposed to the outside, and one side of the second optical fiber connection unit 305, which is not connected with the first output common port, is exposed to the outside, so that a connecting wire is conveniently inserted from the outside of the front plug optical switch module 102; alternatively, the front optical switch module 102 is provided with a clamping groove, the first optical fiber connection unit 302 and the second optical fiber connection unit 305 are positioned in the clamping groove, and when the position of the first optical fiber connection unit 302 or the second optical fiber connection unit 305 in the plug box 100 needs to be changed, the first optical fiber connection unit 302 or the second optical fiber connection unit 305 is taken out from the clamping groove; when it is desired to remove the front plug optical switch module 102 from the receptacle 100, the first fiber optic connection unit 302 and the second fiber optic connection unit 305 may be replaced in the card slot. In this way, when the optical switching device is disassembled and assembled, only the front optical switch module 102 needs to be taken out from the jack 100, and the first input common port does not need to be pulled out from the first optical fiber connection unit 302, and the first output common port does not need to be pulled out from the second optical fiber connection unit 305; and the first input common port and the first output common port do not need to be connected with the optical fiber connector in the new plug box 100, thereby facilitating the disassembly/assembly of the optical switching device.

In another example, the second optical fiber connection unit 305 is provided with a connection line for connecting any two first output normal ports, so as to realize self-loop back of the front plug optical switch module 102.

In this embodiment, a connection line for connecting any two first output common ports is disposed on the second optical fiber connection unit 305, so that an optical switch module 10 with an internal loop-back function can be formed, and the situations that a port needs to be automatically looped back, a port is mutually looped back or a port needs to be connected with an instrument for testing in a tested system in intelligent manufacturing can be satisfied.

An example of a front-plug optical switch module 102 that may implement the self-loopback function is given below:

as shown in fig. 4, the front plug optical switch module 102 is composed of 12 1*2 first optical switches 701, each first optical switch 701 including 1 first input common port com port and 2 first output common ports (No. 1 and No. 2), including 12 first input common ports (com 1 to com 12) in total, and 24 first output common ports. The 24 first output normal ports are inserted into the second optical fiber connection unit 305 to form a first interface unit 702, and the first output normal ports of the 12 first optical switches 701 are interconnected to implement 2x4 optical switch matrices 703 with self-loopback function, wherein 2 represents the number of output ports of one optical switch matrix 703 with self-loopback function, and 4 represents the number of input ports of one optical switch matrix 703 with self-loopback function. The first input common ports com1 to com4, com7 to com10 of the first optical switches 1 to 4, 7 to 10 are inserted into the first optical fiber connection unit 302 to form the second interface unit 704, and the port numbers of com1 to com4, com7 to com10 in the second interface unit 704 are A1 to A8. The first common ports com5 to com6, com11 to com12 of the first optical switches 5 to 6, 11 to 12 are inserted into the first optical fiber connection unit 302 to form a third interface unit 705, and port numbers B1 to B4 of com5 to com6, com11 to com12 in the third interface unit 705.

The connection relationships of the first output normal ports of a 2x4 optical switch matrix 703 with self-loopback function are as follows: the first output common port No. 2 of the first optical switch No. 1 is interconnected with the common port 1 of the first optical switch No. 2, the first output common port No. 1 of the first optical switch No. 1 is interconnected with the first output common port No. 1 of the first optical switch No. 5, the first output common port No. 2 of the first optical switch No. 2 is interconnected with the first output common port No. 1 of the first optical switch No. 6, the first output common port No. 1 of the first optical switch No. 3 is interconnected with the first output common port No. 2 of the first optical switch No. 5, the first output common port No. 2 of the first optical switch No. 3 is interconnected with the first output common port No. 1 of the first optical switch No. 4, and the first output common port No. 2 of the first optical switch No. 4 is interconnected with the first output common port No. 2 of the first optical switch No. 6.

The connection relationship between the first output normal ports of the other 2x4 optical switch matrix 703 with the self-loopback function is as follows: the first output common port No. 2 of the first optical switch No. 7 is interconnected with the first output common port No. 1 of the first optical switch No. 8, the first output common port No. 1 of the first optical switch No. 7 is interconnected with the first output common port No. 1 of the first optical switch No. 11, the first output common port No. 2 of the first optical switch No. 8 is interconnected with the first output common port No. 1 of the first optical switch No. 12, the first output common port No. 1 of the first optical switch No. 9 is interconnected with the first output common port No. 2 of the first optical switch No. 11, the first output common port No. 2 of the first optical switch No. 9 is interconnected with the first output common port No. 1 of the first optical switch No. 10, and the first output common port No. 2 of the first optical switch No. 10 is interconnected with the first output common port No. 2 of the first optical switch No. 12.

In practical applications, the ports A1 and A2, A3 and A4, A5 and A6, and A7 and A8 are required to be paired with the transmit port Tx and the receive port Rx of the unit under test 601, respectively, and the ports B1 and B2, B3 and B4 are required to be paired with the receive port Rx and the transmit port Tx of the error tester, respectively. When the first optical switch No. 1 is switched to a channel from the first input public port to the first output common port No. 2, and the first optical switch No. 2 is switched to the first input public port to the first output common port No. 1, loop-back of the ports A1 and A2 is realized; when the first optical switch No. 1 is switched from the first input common port to the first output common port No. 1, the first optical switch No. 2 is switched from the first input common port to the first output common port No. 2, the first optical switch No. 5 is switched from the first input common port to the first output common port No. 1, and the first optical switch No. 6 is switched from the first input common port to the first output common port No. 1, the interconnection of ports A1 to B1 and A2 to B2 is realized, and other configurations are similar and are not repeated herein.

In another example, as shown in fig. 5, the optical switch module 10 further includes: a rear plug optical switch module 103 detachably connected to the back plate 104 and disposed opposite to the front plug optical switch module 102; the post-insertion optical switch module 103 includes a plurality of second optical switches, each of which includes: the second input common port and the second output common port of each second optical switch are connected with an optical fiber connector; further comprises: a third optical fiber connection unit 402 formed by fixedly connecting a plurality of optical fiber connectors, wherein the second input common port is positioned in the third optical fiber connection unit 402, and one side of the third optical fiber connection unit 402, which is not connected with the second input common port, is exposed outside the optical switching device; the second output normal port is optically connected with the first output normal port in the second optical fiber connection unit 305 to realize optical signal connection between the rear plug optical switch module 103 and the front plug optical switch module 102.

Specifically, as shown in fig. 6, at least one rear plug optical switch module 103 is disposed on the other side of the back plate 104, and the front plug optical switch module 102 and the rear plug optical switch module 103 are disposed opposite to each other. Referring to fig. 5, the post-insertion optical switch module 103 includes a second optical switch array 401 of n second optical switches, where the second optical switches may be 1*M optical switches, 1 indicates that the second optical switches include a second input common port, and M indicates that the second optical switches include M second output common ports, where M is a positive integer. The post-add optical switch module 103 includes n second input common ports and n×m second output common ports in total, where n is a positive integer. Each second input common port in the post-plug optical switch module 103 is externally connected with an optical fiber connector, and each second output common port is externally connected with an optical fiber connector.

The optical fiber connector is a device for detachably (movably) connecting optical fibers, and precisely connects two end surfaces of the optical fibers so that the light energy output by the transmitting optical fiber can be coupled into the receiving optical fiber to the maximum extent. One fiber optic connector typically includes two ports, one port for inserting a transmitting optical fiber and the other port for inserting a receiving optical fiber, and a fiber optic connector at the end of the optical fiber may facilitate insertion and removal of the optical fiber from the fiber optic connector. The optical switch module 10 in this embodiment further includes a third optical fiber connection unit 402 formed by fixedly connecting a plurality of optical fiber connectors, and n second input common ports are located in the ports of the optical fiber connectors of the third optical fiber connection unit 402. The side of the third optical fiber connection unit 402, which is not connected to the second input common port, is exposed outside the optical switching device, so that a tester can conveniently connect and test the optical switching device by using a connecting wire from the outside.

The second output common port of the rear optical switch module 103 is optically connected with the first output common port of the front optical switch module 102 in the second optical fiber connection unit 305, so as to realize optical signal connection between the rear optical switch module 103 and the front optical switch module 102. Compared with the cascade connection in the fiber melting mode, in this embodiment, the first output common port of the front optical add switch module 102 and the second output common port of the rear optical add switch module 103 are not fixed due to the cascade connection, so that the optical switch devices with different topological structures can be cascade-connected according to actual needs. In a word, the optical switching device of the embodiment has the characteristics of strong application scene adaptability, strong expandability and the like, and can realize optical switching devices with different topological structures; and the idle optical switch devices can be disassembled and reassembled according to the current application scene to form the optical switch device with a new topological structure, so that the cost is saved.

Optionally, referring to fig. 5, the post-plug optical switch module 103 further includes a second optical switch control unit 403 and a second backplane interface unit 404, where the second backplane interface unit 404 is configured to dock with the backplane 104 to achieve detachable connection; the second optical switch control unit 403 is connected to the second optical switch for controlling the switching of the second optical switch channel, for example: assuming that the second optical switch is a 1*2 optical switch and includes 1 second input common port and 2 second output common ports (No. 1 and No. 2), the second optical switch includes 2 channels therein, one channel is from the second input common port to the No. 1 second output common port, and the other channel is from the second input common port to the No. 2 second output common port, and the switching of the two channels in the second optical switch can be achieved by using the second optical switch control unit 403. The second optical switch control unit 403 may include a plurality of second optical switch controllers, and each of the second optical switch controllers may correspondingly control one or more second optical switches.

Alternatively, the third optical fiber connection unit 402 may be fixed on a panel of the jack 100, after the rear optical switch module 103 is placed in the jack 100, the second input common port is inserted into the third optical fiber connection unit 402, and then the second output common port is correspondingly connected to the first output common port of the front optical switch module 102.

Optionally, the third optical fiber connection unit 402 is integrated with the post-optical switch module 103. For example: the third optical fiber connection unit 402 is embedded on the panel of the rear plug optical switch module 103; alternatively, a clamping groove is formed in the surface of the rear optical switch module 103, the third optical fiber connection unit 402 is located in the clamping groove, and when the position of the third optical fiber connection unit 402 in the jack 100 needs to be changed, the third optical fiber connection unit 402 is taken out from the clamping groove; when the post-plug optical switch module 103 needs to be removed from the receptacle 100, the third fiber optic connection unit 402 may be replaced in the card slot. In this way, when the optical switching device is disassembled and assembled, only the rear optical switching module 103 needs to be taken out from the jack 100, and the second input common port does not need to be pulled out from the third optical fiber connection unit 402; and the second input common port does not need to be connected with a fiber optic connector in a new receptacle 100, facilitating disassembly/assembly of the optical switching device.

In one example, referring to fig. 5, the second output normal port of the post-insertion optical switch module 103 forms a second output normal port unit 405 through a fixture. The fixing device may be a flange, on which a plurality of holes are formed, and the optical fiber connector of the second output common port is inserted into the holes to fix the second output common port unit 405.

Optionally, the second output normal port unit 405 may also be integrated with the post-add optical switch module 103. For example: the second output normal port unit 405 is embedded in the panel of the rear plug optical switch module 103; or, a clamping groove is formed on the surface of the rear optical switch module 103, the second output common port unit 405 is located in the clamping groove, and when the position of the second output common port unit 405 in the plug box 100 needs to be changed, the second output common port unit 405 is taken out from the clamping groove; when the post-plug optical switch module 103 needs to be removed from the receptacle 100, the second output normal port unit 405 can be replaced in the card slot.

In one example, the first output normal port of the front optical switch module 102 is blind-plugged and butted with the second output normal port in the second output normal port unit 405 through the second optical fiber connection unit 305, so as to implement optical signal connection between the rear optical switch module 103 and the front optical switch module 102. In this embodiment, the number of front optical switch modules 102 may be plural, and the number of rear optical switch modules 103 may be plural, so that blind-plug butt joint between the plural front optical switch modules 102 and the plural rear optical switch modules 103 realizes optical signal connection.

Alternatively, referring to fig. 6, a plurality of front optical switch modules 102 are arranged in a horizontal line, and a plurality of rear optical switch modules 103 are arranged in a vertical line; the first output common ports are arranged in an array in the second optical fiber connection unit 305, the numbers of the first output common ports in each row are the same, and each column is composed of all the first output common ports of one first optical switch according to the serial number sequence; the second output common ports are arranged in an array in the second output common port unit 405, each row is formed by all the second output common ports of one second optical switch according to the serial number sequence, and the serial numbers of the second output common ports of each row are the same. In this embodiment, an implementation manner of blind insertion and docking can be realized by specifically numbering when a plurality of front light-inserting switch modules 102 are arranged in a horizontal line and a plurality of rear light-inserting switch modules 103 are arranged in a vertical line is provided, so that a user only needs to transversely insert the front light-inserting switch modules 102 and vertically insert the rear light-inserting switch modules 103 according to a numbering sequence in actual use, and the operation is simple and convenient.

Specifically, the number of the first optical switches in the front optical switch module 102 is the same as the number of the second output common ports of the second optical switch in the rear optical switch module 103, and the number of the first output common ports of the second optical switch in the front optical switch module 102 is the same as the number of the second optical switches in the rear optical switch module 103. For example: the number of the first optical switches in the front optical switch module 102 is 32 and the optical switches are 1*8, and the number of the second optical switches in the rear optical switch module 103 is 8 and the optical switches are 1×32.

In the cascade connection, the second output common port of each second optical switch in the rear optical switch module 103 is respectively connected with the first output common port of the same number of the first optical switches in all the front optical switch modules 102. The number here refers to a number corresponding to the optical switch only, and the number is assigned to the first output normal port of each first optical switch, for example, the number of the first output normal port of each first optical switch 1*8 is 1 to 8. The second output common ports of each second optical switch are assigned numbers according to numbers, for example, the numbers of the second output common ports of each second optical switch of 1 x 32 are all 1-32.

For example: the second output common ports (1-32) of the No. 1 second optical switch in the rear plug optical switch module 103 are respectively connected with the No. 1 first output common ports of the first optical switches in all the front plug optical switch modules 102, the second output common ports (1-32) of the No. 2 second optical switch in the rear plug optical switch module 103 are respectively connected with the No. 2 first output common ports of the first optical switches in all the front plug optical switch modules 102, and so on. In this embodiment, when the plurality of front optical switch modules 102 are arranged in a horizontal line and the plurality of rear optical switch modules 103 are arranged in a vertical line, the first output common ports are arranged in an array of the second optical fiber connection units 305, the rows of the array extend in the horizontal direction, the columns of the array extend in the vertical direction, the numbers of the first output common ports of each row are the same, and each column is composed of all the first output common ports of one first optical switch in the serial number order. The second output common ports are arranged in an array in the second output common port unit 405, the rows of the array extend in the transverse direction, the columns of the array extend in the vertical direction, each row is formed by all the first output common ports of one second optical switch according to the serial number sequence, and the serial numbers of the second output common ports of each column are the same. In this arrangement, when the array arrangement pitch of the first output common ports in the second optical fiber connection unit 305 is the same as the array arrangement pitch of the second output common ports in the second output common port unit 405, blind mating can be achieved.

An example of blind mating between the plurality of front-plug optical switch modules 102 and the plurality of rear-plug optical switch modules 103 to achieve optical signal connection is given below, as shown in fig. 7:

the 8 front plug optical switch modules 102 and the 4 back plug optical switch modules 103 are cascaded to realize an 8x32 optical switch matrix.

Wherein, one front plug optical switch module 102 is composed of 4 first optical switches 501 of 1*8, and the numbers of 4 first input public ports (com 1-com 4) in the first optical fiber connection unit 302 are A1-A4; 4*8 the first output normal ports form an array of 8 rows and 4 columns in the second optical fiber connection unit 305 shown in fig. 3, the rows of the array being sequentially arranged by the first output normal ports 1 to 8 of the first optical switches, and the columns of the array being sequentially arranged by the 4 first optical switches in number. The number of the 32 first output normal ports in one front-plug optical switch module 102 is x1_y1 (the number is referred to herein as being relative to one front-plug optical switch module 102), x1 represents the port number of the first output normal port in the first optical switch, and y1 represents the number of the first optical switch in the front-plug optical switch module 102. For example: the number 1 first output common port of the first optical switch OSW1 corresponds to the number 1_1, and the number 2 first output common port corresponds to the number 2_1; the port number corresponding to the first output normal port number 1 of the first optical switch of OSW3 is 1_3, the port number corresponding to the first output normal port number 8 is 8_3, the other port numbers and so on.

The 8 front optical switch modules 102 include 32 first input common ports (A1-a 32) and 8 x 32 first output

common ports

502,8, where the 8 x 32 first output common ports 502 are arranged in a horizontal line according to a numbering sequence, and each port in the total array is numbered oswabi_j, the i value is a row of each first output common port in the array, and the j value is a column of each first output common port in the array. The number x1_y1 of the first output normal port in each front plug optical switch module 102 has a corresponding relation with the number oswabi_j of each port in the total array, and the i value is the same as the x1 value, and represents the port number of the first output normal port in the first optical switch; the j value needs to be converted from the y1 value, j=p (the number of the current front plug optical switch module 102 is-1) +y1, where p is the number of optical switches in the single front plug optical switch module 102, and in this embodiment is 4. For example: the port number of the first output normal port with the port number of 3_1 in the second block front plug-in optical switch module 102 in the total array is oswab3_5; the port number of the first output normal port with the port number of 3_3 in the second block front plug-in optical switch module 102 in the total array is OSWAB3_7; the port number of the first output normal port with the port number of 3_1 in the sixth front-inserted optical switch module 102 in the total array is oswab3_21; the port number of the first output normal port with the port number of 3_3 in the sixth block of front-plug optical switch module 102 in the total array is oswab3_23.

Wherein, one post-add optical switch module 103 is composed of 2 second optical switches 503 of 1×32, and the numbers of the 2 second input common ports (com 1 to com 2) in the third optical fiber connection unit 402 are B1 to B2; the 2 x 32 second output common ports form a 2-row 32-column array through the fixing device, the rows of the array are sequentially arranged by the 1 to 32 first output common ports of the second optical switches, and the columns of the array are sequentially arranged by the 2 second optical switches according to the numbers. The number of the second output normal port in one post-plug optical switch module 103 is x2_y2 (where the number is referred to with respect to one post-plug optical switch module 103), x2 represents the number of the second optical switch in the post-plug optical switch module 103, and y2 represents the port number of the second output normal port in the second optical switch. For example: the number 1 first output common port of the first second optical switch OSW1 corresponds to the number 1_1, and the number 2 first output common port corresponds to the number 1_2; the first output normal port No. 1 of the second optical switch OSW2 corresponds to the port number 2_1, the first output normal port No. 8 corresponds to the port number 2_8, the other port numbers and so on.

The 4 post-add optical switch modules 103 include a total of 8 second input common ports (B1-B8) and 8 x 32 second output common ports 504. When the second output normal ports are integrated in the post-plug optical switch module 103, the 4 post-plug optical switch modules 103 are vertically arranged, and 8 x 32 second output normal ports 504 of the 4 post-plug optical switch modules 103 form a total array of 8 rows and 32 columns, wherein each port in the total array is numbered as oswbai_j, the i value is a row of each second output normal port in the array, and the j value is a column of each second output normal port in the array. The serial number x2_y2 of the second output normal port in each post-add optical switch module 103 has a corresponding relation with each port serial number oswbai_j in the total array, and the j value is the same as the y2 value, which indicates the port number of the second output normal port in the second optical switch; the i value needs to be converted from the x2 value, i=q (the number-1) +x2 of the current post-insertion optical switch module 103, where q is the number of optical switches in one post-insertion optical switch module 103, and in this embodiment is 2.

Finally, an array of 8 rows and 32 columns in total formed by the first output normal ports in the 8 front-plug optical switch modules 102 is directly in blind-plug butt joint with an array of 8 rows and 32 columns in total formed by the second output normal ports in the 4 rear-plug optical switch modules 103, so that two ports with port numbers of oswabi_j and oswbai_j are respectively interconnected to form an 8x32 optical switch matrix with 32 a ports and 8B ports.

Alternatively, the plurality of front optical switch modules 102 may be arranged in a vertical line, and the plurality of rear optical switch modules 103 may be arranged in a horizontal line; the first output common ports are arranged in an array in the second optical fiber connection unit 305, each row is formed by all the first output common ports of one first optical switch according to the serial number sequence, and the serial numbers of the first output common ports of each column are the same; the second output common ports are arranged in an array in the second output common port unit 405, the numbers of the second output common ports in each row are the same, and each column is composed of all the first output common ports of one second optical switch according to the serial numbers. The above-mentioned specific implementation of the horizontal alignment of the front plug-in optical switch modules 102 and the vertical alignment of the rear plug-in optical switch modules 103 may be referred to herein, and the arrangement modes of the front plug-in optical switch modules 102 and the rear plug-in optical switch modules 103 may be interchanged, which is not described in detail in this embodiment.

The foregoing describes the units in the optical switching device in detail, and a specific example of a flexibly configured optical switching device is given below for easy understanding, as shown in fig. 6:

the optical switching device with flexible configuration in this example adopts a plug-in type modular structure, the back plate 104 is installed in the middle of the plug-in box 100, the plug-in box 100 is divided into a front part and a rear part, the back plate 104 comprises a plurality of fixing slots, one fixing slot of the main control module 101, one or two fixing slots of the power supply module 105 and one or two fixing slots of the fan module 106, the number of the fixing slots is determined according to the heat dissipation requirement of the device, and the fixing slots of the front plug-in optical switching module 102 and the rear plug-in optical switching module 103 are respectively a plurality of.

In this example, the power module 105, the main control module 101 and the n front plug optical switch modules 102 are fixed on the front side of the back plate 104 in a horizontal line, and the m rear plug optical switch modules 103 are fixed on the back side of the back plate 104 in a vertical line, and the fan module 106 is also fixed on the back side of the back plate 104. The front slot and the rear slot are arranged in the plug box 100, the front slot is a vertical slot, the rear slot is a horizontal slot, each module positioned on the front side of the backboard 104 can be inserted into the plug box 100 along the front slot to be connected with the backboard 104, and each module positioned on the rear side of the backboard 104 can be inserted into the plug box 100 along the rear slot to be connected with the backboard 104. The back plate 104 realizes interconnection among the main control module 101, the front plug optical switch module 102, the rear plug optical switch module 103, the power supply module 105 and the fan module 106 in the device.

Referring specifically to fig. 2, the main control module 101 includes a processor unit 201, a programmable logic unit 202, a communication interface unit 203, and a main control backboard interface unit 204, where the main control module 101 implements information interaction with the background through the communication interface unit 203, and receives a command issued by the background; the processor unit 201 obtains the command request to process and returns the result or status content to the background by using the communication interface unit 203; the processor unit 201 can call the programmable logic unit 202 to process data according to the need when processing according to the command requirement; the main control module 101 monitors the power module 105, the fan module 106, the front plug optical switch module 102, and the rear plug optical switch module 103 through the main control back board interface unit 204. The power module 105 implements the operating power required to convert external ac or dc power to other modules within the optical switching device door. The fan module 106 is composed of a fan and a control unit, realizes a heat dissipation function, and has an automatic speed regulation function.

The interface signals between the various modules and the backplane 104 include one or more of power signals, IO signals, I2C signals, RS485 signals, ethernet signals, and the like for the interconnection of the backplane 104. The signals of the communication interface unit 203 of the main control module 101 include ethernet signals, I2C signals, RS485 signals, etc., and the communication interface unit 203 is used for background communication and communication between modules in the device.

The back plate 104 is in a special-shaped plate (e.g. L-shaped) or hollow mode, so that a space is reserved for realizing the butt joint between the front plug optical switch module 102 and the rear plug optical switch module 103, and the second optical fiber connection unit 305 of the front plug optical switch module 102 and the second output common port unit 405 of the rear plug optical switch module 103 are in butt joint to form a butt joint unit together.

The front-plug optical switch module 102, as shown in fig. 3, includes: the first optical switch array 301, the first optical switch control unit 303, and the first backplane interface unit 304, the optical switch device further includes: the first and second optical

fiber connection units

302 and 305 correspond to the front plug optical switch module 102. Each first common input port of the first optical switch array 301 is externally connected with an optical fiber connector and is inserted into the first optical fiber connection unit 302; the first output normal port of the first optical switch array 301 is externally connected with an optical fiber connector, and is inserted into the second optical fiber connection unit 305. The first fiber optic connection unit 302 is typically placed on the panel of the front plug optical switch module 102 and the second fiber optic connection unit 305 may be placed in different locations depending on the function of the front plug optical switch module 102 in the device. When the front-plug optical switch module 102 is used as a multi-path one-to-many optical switch, the second optical fiber connection unit 305 and the first optical fiber connection unit 302 can be placed together on the panel of the front-plug optical switch module 102 for direct use by a user. For the front plug optical switch module 102 to be used as an optical switch matrix with the rear plug optical switch module 103, the second optical fiber connection unit 305 is typically placed on a surface panel of the front plug optical switch module 102 or directly embedded in the back plate 104.

The post-plug optical switch module 103, as shown in fig. 5, includes: the second optical switch array 401, the second optical switch control unit 403, and the second backplane interface unit 404, the optical switch device further includes: a third fiber connection unit 402 and a second output normal port unit 405 corresponding to the post-plug optical switch module 103. The second output normal port unit 405 does not include a fiber connector therein. The third optical fiber connection unit 402 is placed on the surface panel of the rear plug optical switch module 103 for direct use by a user. Alternatively, the third fiber optic connection unit 402 may be secured to the panel of the jack 100 by fiber optic wrapping through the back plate 104 along with the first fiber optic connection unit 302. The second output normal port unit 405 may be placed on a panel on the surface of the rear optical switch module 103 or directly embedded in the back plate 104, and the rear optical switch module 103 is directly docked with the front optical switch module 102 after being inserted into the jack 100.

It should be noted that, when the second optical fiber connection unit 305 is embedded in the back plane 104, the second output normal port unit 405 cannot be embedded in the back plane 104, but directly interfaces with the second optical fiber connection unit 305 on the back plane 104; when the second output normal port unit 405 is embedded in the back plane, the second optical fiber connection unit 305 cannot be embedded in the back plane 104, and directly interfaces with the second output normal port unit 405 on the back plane 104.

M=m×k in the second output normal port unit 405, where M represents the number of first optical switches of 1*N included in a single front-plug optical switch module 102, N is the number of first output normal ports in a single first optical switch of the front-plug optical switch module 102, and k is the number of front-plug optical switch modules 102 inserted in the device. When m=m, k=n, an optical switch matrix of NxM may be formed by a front optical switch module 102 and a rear optical switch module 103; when M < M, k < N, and M is a multiple of M, and N is a multiple of k, it is necessary that M/M front-plug optical switch modules 102 and N/k rear-plug optical switch modules 103 together form an NxM optical switch matrix, and typically M is greater than or equal to N. For an optical switch matrix formed by adopting an optical switch one-stage cascade mode, the maximum value of M/N is determined by the N value of a 1*n optical switch device, and the maximum value of M=N=n, and for an optical switch matrix formed by adopting an optical switch multi-stage cascade mode, the maximum value of M/N is increased in geometric progression by taking N as a base, and the progression capable of cascade is limited only by the external dimension of a device and the insertion loss of an optical switch; multiple devices can be used for cascading to form an optical switch matrix with larger switching capacity, for example, 1 optical switch matrix with 8x32 optical switch moment and 1 optical switch matrix device with no blocking and 16 optical switch matrices with 4x2 optical switch matrix can form 1 optical switch matrix with blocking and 8x64 optical switch matrices, and the cascading quantity of the devices is limited only by the insertion loss data of each channel of the optical switch matrix system.

Alternatively, the number of second optical switches in the second optical switch array 401 of the rear optical switch module 103 in the apparatus may be increased, that is, the number of second optical switches in a single rear optical switch module 103 may be increased, thereby reducing the number of rear optical switch modules 103 to reduce the number of rear slots in the jack 100 and the number of fixed slots on the back plate 104.

The back plate 104 in this example is designed as a shaped plate, such as an L-shape, or is provided with a through hole, which reserves a space for the butt-joint cascade of the front board optical switch module 102 and the rear board optical switch module 103. When the second optical fiber connection unit 305 is placed on the panel of the front-plug optical switch module 102 and the second output normal port unit 405 is placed on the panel of the rear-plug optical switch module 103, after the front-plug optical switch module 102 and the rear-plug optical switch module 103 are mounted, the second optical fiber connection unit 305 and the second output normal port unit 405 achieve blind-plug butt joint at the opening of the back plate 104 to form, for example, the NxM optical switch matrix described above. When the second optical fiber connection unit 305 is not integrated on the panel of the front optical switch module 102 and the second output normal port unit 405 is not placed on the panel of the rear optical switch module 103, the second optical fiber connection unit 305 and the second output normal port unit 405 need to be fixed at the opening of the back plate 104 to implement the butt-joint cascade, so as to form, for example, the NxM optical switch matrix described above.

The above examples are merely illustrative, and do not constitute a limitation of the optical switching device of the present embodiment. In practical application, according to the requirements of application scenarios, a single front plug optical switch module 102 and a single rear plug optical switch module 103 can be adopted, or the front plug optical switch module 102 and the rear plug optical switch module 103 can be simultaneously plugged to combine the optical switch devices required by the user, for example, a multipath 1*N optical switch, an NxM optical switch matrix, an optical switch array with a loopback function and the like, in addition, the device has strong expansibility, and various expansion function modules can be installed in the plug box 100, for example: a multi-channel variable optical attenuator (Variable Optical Attenuator, VOA) or an optical power meter (Optical Power Meter, OPM), etc.

The embodiment of the application has the following advantages:

(1) By using the multi-slot plug-in box type module structure, the front plug-in optical switch module 102 and the rear plug-in optical switch module 103 are respectively arranged on two sides of the back plate 104, and the first output common port of the front plug-in optical switch module 102 and the second output common port of the rear plug-in optical switch module 103 are in butt joint cascade connection in the plug-in box 100, so that no butt joint optical fibers between the first output common port and the second output common port are arranged outside the plug-in box 100, and the device is very convenient to produce, install, use and maintain.

(2) In the device, each first input public port and each first output common port of the front plug optical switch module 102 are externally connected with an optical fiber connector, each second input public port and each second output common port of the rear plug optical switch module 103 are externally connected with an optical fiber connector, the two-to-two optical fiber connectors can be detachably connected through the optical fiber connectors, and the device is different from a device (only fixed configuration) which adopts a fiber melting mode to realize butt joint, and the front plug optical switch module 102 and the rear plug optical switch module 103 in the device can be taken out and reconfigured and combined as required to form a new test system, so that the existing optical switch device is recycled.

(3) The first output common port of the front optical switch module 102 is located in the second optical fiber connection unit 305 and integrated with the second optical fiber connection unit 305 in the front optical switch module 102, the second output common port of the rear optical switch module is located in the second output common port unit 405 and integrated with the second output common port unit 405 in the rear optical switch module 103, and the second optical fiber connection unit 305 and the second output common port unit 405 realize blind insertion butt joint at the back plate 104, so that convenience is provided for disassembly/assembly of the optical switch device.

(4) The device adopts a plug-in type modular structure, has flexible configuration, and adopts a single front plug-in optical switch module 102 and a single rear plug-in optical switch module 103, or simultaneously plugs in the front plug-in optical switch module 102 and the rear plug-in optical switch module 103 to combine the self-required optical switch devices, such as a multipath 1*N optical switch, an NxM optical switch matrix, an optical switch array with a loop-back function and the like.

(5) The device adopts a plug-in type modular structure, can conveniently increase required module units, such as instrument function modules of a multi-channel variable optical attenuator (Variable Optical Attenuator, VOA) or an optical power meter (Optical Power Meter, OPM) and the like, can expand functions of a system, and enables the built intelligent manufacturing optical instrument cloud system to have good expandability and manufacturing flexibility.

The optical switching device in the above embodiment is mainly applied to a production test scene with a single board of an optical interface device in the field of intelligent manufacturing, and is used for building various test systems, and also can be applied to a scene that the optical interface device needs to expand the number of optical interfaces or dynamically switch in an actual application environment, such as a distributed optical monitoring scene: and the optical fiber lines to be monitored are subjected to compound monitoring with a small amount of high-value meters, so that the monitored information quantity is increased.

The embodiment of the application also provides an optical module testing system, as shown in fig. 8, including: the light module under test, the test meter 604, and a plurality of the light switching devices 60 as in the above embodiments. The optical switching devices 60 are connected in series, and the optical switching devices 60 comprise a head optical switching device 602 connected with the tested optical module and a tail optical switching device 603 connected with the test instrument 604; in the extending direction from the head-end optical switching device 602 to the tail-end optical switching device 603, the third optical fiber connection unit 402 of the former optical switching device is connected with the first optical fiber connection unit 302 of the latter optical switching device by an optical signal connection line, so that the second input public port of the former optical switching device is connected with the first input public port of the latter optical switching device by an optical signal; and the number of second input common ports of the previous optical switching device is the same as the number of first input common ports of the next optical switching device.

Specifically, each performance index of the tested optical module (for example, optical network equipment in a communication network) needs a special instrument to test, and the scheme which is easier to think at present is to use a common optical switch to realize the switching of test channels between the same tested optical module and different instruments, or the switching of test channels between the same instrument and different tested optical modules, or the switching scheme of test channels between different tested optical modules and different instruments in a serial mode, and the test schemes have a common defect that the instruments cannot be shared, the use efficiency of the instruments is low, and the cost of the whole test system is high.

In the embodiment, the optical switching device with flexible configuration is provided, and various customized optical module testing systems can be built by combining the optical switching device with flexible configuration and the high-value optical instrument according to intelligent manufacturing requirements, so that the high-value optical instrument sharing is realized, the manufacturing cost is reduced, and meanwhile, the optical module testing system has good manufacturing flexibility.

For example: it is necessary to test 32 optical modules (e.g., optical network devices in a communication network), where every two optical modules are integrated into one optical module under test 601, each optical module under test 601 has two ports (port 1 and port 2), and each port corresponds to one optical module under test. In practical application, 3 or more than 3 light modules to be tested can be integrated in one unit to be tested 601. Each port of the unit under test 601 shown in fig. 8 includes two interfaces (Tx interface and Rx interface), each of which is correspondingly connected to one port of the optical switching device, that is, each port of the unit under test 601 is correspondingly connected to two ports of the optical switching device, and one unit under test 601 is correspondingly connected to four ports of the optical switching device. Each tested optical module in the test, that is, 1 port of the test instrument (e.g., the error code meter) needs to be used for each port, and 32 tested optical modules need to be used for 32 ports of the test instrument (e.g., the error code meter).

The optical module test system in this embodiment includes two optical switch devices (device 1 and device 2), the device 1 is composed of 8 front-plug optical switch modules 102 As shown in fig. 4, the first optical switch in the front-plug optical switch module 102 is a 1*2 optical switch, wherein the port number As of the device 1 is 1-64, and a corresponding relationship exists between the port number As of the device 1 and the port number At of the front-plug optical switch module 102 As shown in fig. 4, and t is 1-8. The corresponding relation is s=8 (n-1) +t, where n is the number of the current front-plug optical switch module 102 in the device 1, and takes 1 to 8. The device 2 is an 8x32 optical switch matrix formed by cascading 8 front plug

optical switch modules

102 and 4 back plug optical switch modules 103 as shown in fig. 7.

After the optical switching device is used for modifying the test system in the embodiment, when the 32 tested optical modules are tested, the 4 ports of the test instrument (such as a code error meter) can realize the test of the 32 tested optical modules, 28 ports of the test instrument (such as the code error meter) can be saved, and the cost of the whole test system is greatly reduced.

It is not difficult to find that the number of the optical switching devices used in the embodiment of the present system may be 1 or more, and specific structures of the optical switching devices used in the embodiment may refer to relevant technical details in the corresponding optical switching device embodiments, which are not repeated herein for reducing repetition.

It should be noted that, each module in the above embodiment is a logic module, and in practical application, one logic unit may be one physical unit, or may be a part of one physical unit, or may be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, units that are not so close to solving the technical problem presented by the present invention are not introduced in the above embodiments, but it does not indicate that other units are not present in the above embodiments.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the invention and that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. An optical switching device, comprising:

the device comprises an insertion box with an opening and a cover plate for closing the opening, wherein the cover plate closes the opening and the insertion box to form a cavity;

the back plate is positioned in the cavity, a plurality of slots are formed in the inner wall of the plug box, a plurality of main control modules and power modules which are connected with signals of the back plate and an optical switch module which is detachably connected with the back plate are respectively arranged in the slots, and the main control modules monitor the states of the power modules and the optical switch modules through the back plate.

2. The optical switching device according to claim 1, wherein the optical switching module comprises at least one front plug optical switching module located at one side of the back plate;

the front plug optical switch module includes a plurality of first optical switches, each of the first optical switches including: the first input common port and the first output common port of each first optical switch are connected with an optical fiber connector;

further comprises: the first input common port is positioned in the first optical fiber connecting unit, the first output common port is positioned in the second optical fiber connecting unit, and one side of the first optical fiber connecting unit, which is not connected with the first input common port, is exposed out of the plug box.

3. The optical switching device of claim 2, wherein the first and second fiber connection units are each integrated with the front plug optical switching module.

4. An optical switching device according to claim 2 or 3, wherein the second optical fiber connection unit is provided with a connection line for connecting any two of the first output normal ports, so as to realize self-loop-back of the front plug optical switching module.

5. An optical switching device according to claim 2 or 3, wherein the optical switching module further comprises: the rear plug-in optical switch module is detachably connected with the backboard and is arranged opposite to the front plug-in optical switch module;

the rear plug optical switch module includes a plurality of second optical switches, each of the second optical switches including: the second input common port and the second output common port of each second optical switch are connected with an optical fiber connector;

further comprises: the second input common port is positioned in the third optical fiber connection unit, and one side of the third optical fiber connection unit, which is not connected with the second input common port, is exposed out of the optical switch device;

the second output common port is in optical signal connection with the first output common port in the second optical fiber connection unit so as to realize optical signal connection between the rear plug optical switch module and the front plug optical switch module.

6. The optical switching device according to claim 5, wherein the third optical fiber connection unit is integrated with the post-insertion optical switching module.

7. The optical switching device according to claim 5, wherein the second output normal port of the post-insertion optical switching module forms a second output normal port unit by a fixing means.

8. The optical switching device according to claim 7, wherein the first output normal port of the front plug optical switching module is blindly plugged and docked with the second output normal port in the second output normal port unit through the second optical fiber connection unit to realize optical signal connection between the rear plug optical switching module and the front plug optical switching module.

9. The optical switching device according to claim 8, wherein a plurality of the front optical switching modules are arranged in a horizontal line and a plurality of the rear optical switching modules are arranged in a vertical line;

the first output common ports are arranged in the second optical fiber connection unit array, the numbers of the first output common ports of each row are the same, and each column consists of all the first output common ports of one first optical switch according to the sequence of the numbers;

the second output common ports are arranged in the second output common port unit array, each row is formed by all the second output common ports of one second optical switch according to the serial number sequence, and the serial numbers of the second output common ports of each row are the same.

10. An optical module testing system, comprising: a light module under test, a test meter, and a plurality of the optical switching devices as claimed in any one of claims 5 to 9;

the optical switch devices are connected in series, and the optical switch devices comprise a head end optical switch device connected with the tested optical module and a tail end optical switch device connected with the test instrument;

the third optical fiber connection unit of the former optical switching device is connected with the first optical fiber connection unit of the latter optical switching device in the extending direction from the head end optical switching device to the tail end optical switching device through a connecting line optical signal so as to enable the second input public port of the former optical switching device to be connected with the first input public port of the latter optical switching device through an optical signal;

and the number of the second input common ports of the former optical switching device is the same as the number of the first input common ports of the latter optical switching device.