Optical backplane switching method and optical communication equipment

Abstract

The embodiment of the present application discloses a method for switching an optical backplane and an optical communication device. Each optical signal processing board in the optical communication device is connected to at least two optical backplanes, wherein the first optical backplane is the currently working optical backplane and the second optical backplane is the spare optical backplane. If the first optical link on the first optical backplane fails, the selection switch on the optical signal processing board is controlled to switch to disconnect the connection between the optical signal processing board and the first optical backplane, and connect the optical signal processing board and the second optical backplane. In other words, when an optical backplane fails, the spare optical backplane can be used to switch the faulty optical backplane. The normal transmission of the optical signal is guaranteed, and there is no need to replace the entire optical communication device, and the maintenance method is simpler.

Description

Technical Field

[0001] The present application relates to the field of optical communications, and in particular to a switching method for an optical backplane and optical communication equipment. Background Art

[0002] In optical communication equipment, an optical backplane connects the various optical signal processing boards within the device. Each board is connected to the optical backplane via connectors, allowing the backplane to transmit optical signals from one board to another. By plugging the optical signal processing boards into the backplane, a large number of optical fibers can be connected, reducing the space occupied by the equipment.

[0003] Currently, optical communication equipment typically has only one optical backplane, which houses all optical signal processing boards. If the backplane fails, the entire optical communication equipment must be replaced, which is prohibitively expensive. Summary of the Invention

[0004] The present invention provides an optical backplane switching method and optical communication equipment. When an optical backplane fails, a spare optical backplane can be used to switch the failed optical backplane, ensuring normal transmission of optical signals without replacing the entire optical communication equipment, making maintenance simpler.

[0005] In a first aspect, an embodiment of the present application provides an optical communication device. The optical communication device includes: a first optical signal processing board, a second optical signal processing board, a first optical backplane, and a second optical backplane. The first optical signal processing board is connected to the first optical backplane via a first connector. The second optical signal processing board is connected to the first optical backplane via a second connector. The first optical signal processing board is connected to the second optical backplane via a third connector. The second optical signal processing board is connected to the second optical backplane via a fourth connector. The first optical signal processing board is provided with a first optical signal processor and a first selection switch, and the first optical signal processor is connected to the first connector via the first selection switch. The second optical signal processing board is provided with a second optical signal processor and a second selection switch, and the second optical signal processor is connected to the second connector via the second selection switch. Specifically, the first optical signal processing board and the second optical signal processing board are used to determine whether a first optical link on the first optical backplane is faulty. The first optical link is used to connect the first connector and the second connector. When the first optical signal processing board and the second optical signal processing board determine that the first optical link has failed, the first optical signal processing board is used to connect the first optical signal processor to the third connector via the first selection switch. The second optical signal processing board is used to connect the second optical signal processor to the fourth connector through the second selection switch.

[0006] In this embodiment, each optical signal processing board in the optical communication equipment is connected to at least two optical backplanes, with the first optical backplane being the active one and the second being the backup one. If the first optical link on the first optical backplane fails, the selector switch on the optical signal processing board is controlled to disconnect the optical signal processing board from the first optical backplane and connect it to the second optical backplane. In other words, if an optical backplane fails, the backup optical backplane can be used to replace the faulty one. This ensures normal transmission of optical signals without having to replace the entire optical communication equipment, simplifying maintenance.

[0007] In some possible implementations, the first optical signal processing board is orthogonally connected to the first optical backplane. The second optical signal processing board is orthogonally connected to the first optical backplane. The first optical signal processing board is orthogonally connected to the second optical backplane. The second optical signal processing board is orthogonally connected to the second optical backplane. This orthogonal connection design facilitates plugging and unplugging of the optical signal processing board and the optical backplane. Furthermore, it saves space and facilitates the installation of more optical backplanes connected to each optical signal processing board.

[0008] In some possible embodiments, the second optical backplane includes an optical switch array, which is used to configure the optical switch array according to the first optical link to form a second optical link. The second optical link is used to connect the third connector and the fourth connector. It should be understood that in actual applications, the number of optical backplanes may be more than two. Furthermore, the links on different working optical backplanes may also be different. Therefore, by flexibly configuring the optical switch array so that the second optical link can be the same as the link on any working optical backplane, any failed working optical backplane can be switched based on actual conditions.

[0009] In some possible implementations, there are multiple first optical backplanes, and the second optical backplane is a backup optical backplane for any one of the first optical backplanes, thereby improving protection efficiency and reducing the impact of failures.

[0010] In some possible implementations, the first optical backplane is detachably connected to the first optical signal processing board and the second optical signal processing board. The second optical backplane is detachably connected to the first optical signal processing board and the second optical signal processing board. This facilitates disassembly and repair of a faulty optical backplane after optical backplane switching.

[0011] In a second aspect, an embodiment of the present application provides a method for switching an optical backplane, which is applied to optical communication equipment. The optical communication equipment includes: a first optical signal processing board, a second optical signal processing board, a first optical backplane, and a second optical backplane. The first optical signal processing board is connected to the first optical backplane through a first connector. The second optical signal processing board is connected to the first optical backplane through a second connector. The first optical signal processing board is connected to the second optical backplane through a third connector. The second optical signal processing board is connected to the second optical backplane through a fourth connector. A first optical signal processor and a first selection switch are provided on the first optical signal processing board, and the first optical signal processor is connected to the first connector through the first selection switch. A second optical signal processor and a second selection switch are provided on the second optical signal processing board, and the second optical signal processor is connected to the second connector through the second selection switch.

[0012] The method includes the following steps. First, determining whether a first optical link on a first optical backplane is faulty. The first optical link is used to connect a first connector and a second connector. Furthermore, if the first optical link is determined to be faulty, connecting the first optical signal processor to the third connector via a first selector switch. Furthermore, connecting the second optical signal processor to the fourth connector via a second selector switch.

[0013] In some possible implementations, the first optical signal processing board is orthogonally connected to the first optical backplane. The second optical signal processing board is orthogonally connected to the first optical backplane. The first optical signal processing board is orthogonally connected to the second optical backplane. The second optical signal processing board is orthogonally connected to the second optical backplane.

[0014] In some possible implementations, the second optical backplane includes an optical switch array. The method further includes configuring the optical switch array according to the first optical link to form a second optical link. The second optical link is used to connect the third connector and the fourth connector.

[0015] In some possible implementations, the method further includes determining whether the first optical link on the first optical backplane has recovered from the fault. When it is confirmed that the first optical link on the first optical backplane has recovered from the fault, the first optical signal processor is connected to the first connector via the first selector switch, and the second optical signal processor is connected to the second connector via the second selector switch. In this implementation, if the faulty first optical backplane is restored to normal after repair, the restored first optical backplane can be used to replace the second optical backplane. In this way, the second optical backplane can be restored to a standby state, ready to be replaced by other working optical backplanes that may have failed.

[0016] In some possible implementations, the method further includes: determining whether the second optical link is faulty. When the second optical link is confirmed to be faulty, a fault alarm is sent, thereby improving the reliability of the solution.

[0017] In an embodiment of the present application, each optical signal processing board in the optical communication equipment is connected to at least two optical backplanes, wherein the first optical backplane is the currently working optical backplane and the second optical backplane is the backup optical backplane. If the first optical link on the first optical backplane fails, the selector switch on the optical signal processing board is controlled to switch to disconnect the optical signal processing board from the first optical backplane and connect the optical signal processing board to the second optical backplane. In other words, when an optical backplane fails, the backup optical backplane can be used to replace the failed optical backplane. This ensures the normal transmission of optical signals without having to replace the entire optical communication equipment, making maintenance much simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the first structure of the optical communication device in the embodiment of the present application;

[0019] Figure 2 This is a schematic diagram of the second structure of the optical communication device in the embodiment of the present application;

[0020] Figure 3 This is a schematic diagram of the third structure of the optical communication device in the embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of the fourth structure of the optical communication device in the embodiment of the present application;

[0022] Figure 5 A schematic diagram of configuring an optical link through an optical switch array in an embodiment of the present application;

[0023] Figure 6 A schematic flow chart of an optical backplane switching method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] The present invention provides an optical backplane switching method and optical communication equipment. When an optical backplane fails, a spare optical backplane is used to switch the failed optical backplane, ensuring normal transmission of optical signals without replacing the entire optical communication equipment, making maintenance simpler.

[0025] It should be noted that the terms "first", "second", etc. in the specification, claims, and drawings of this application are used to distinguish similar objects, rather than to limit a specific order or precedence. It should be understood that the above terms are interchangeable where appropriate so that the embodiments described in this application can be implemented in a sequence other than that described in this application. In addition, the term "including" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0026] The optical communication equipment provided in the present application is mainly composed of an optical backplane and a plurality of optical signal processing boards. Among them, the optical backplane plays the role of connecting each optical signal processing board. The optical backplane is mainly composed of a connector and an optical fiber board, and uses a light-guiding material as a medium to transmit optical signals. Each optical signal processing board is connected to the optical backplane through a connector, and the optical signal output by an optical signal processing board can be transmitted to another optical signal processing board through the medium on the optical backplane. It should be noted that the types of optical communication equipment provided in the present application include but are not limited to optical cross connect (OXC) equipment, and the types of optical signal processing boards include but are not limited to circuit boards, branch boards and single boards. It should also be noted that in some application scenarios, the various types of "boards" mentioned above may also be referred to as "cards" or "disks", etc. In this application, the term "board" is used to describe them uniformly.

[0027] The optical communication equipment provided in this application is introduced in detail below.

[0028] Figure 1 This is a schematic diagram of the first structure of the optical communication equipment in the embodiment of the present application. Figure 1 As shown, the optical communication device includes a first optical signal processing board 10, a second optical signal processing board 20, a first optical backplane 30 and a second optical backplane 40. The first optical signal processing board 10 is connected to the first optical backplane 30 through a first connector 1. The second optical signal processing board 20 is connected to the first optical backplane 30 through a second connector 2. The first optical signal processing board 10 is connected to the second optical backplane 40 through a third connector 3. The second optical signal processing board 20 is connected to the second optical backplane 40 through a fourth connector 4. It should be understood that the above Figure 1 Each connector shown can be divided into male and female connectors. For example, a male connector is provided on the optical signal processing board, and a female connector is provided on the optical backplane. The optical signal processing board and the optical backplane are connected by docking the male and female connectors.

[0029] The first optical signal processing board 10 is also equipped with a first optical signal processor 101 and a first selector switch 102. The second optical signal processing board 20 is equipped with a second optical signal processor 201 and a second selector switch 202. The first optical signal processor 101 and the second optical signal processor 201 are both used to implement functions such as transmitting, receiving, detecting, and processing optical signals. The first selector switch 102 and the second selector switch 202 are both used to switch between optical links on different optical backplanes. For example, if the currently active optical backplane is the first optical backplane 30, the first optical signal processor 101 is connected to the first connector 1 via the first selector switch 102, and the second optical signal processor 201 is connected to the second connector 2 via the second selector switch 202. The first optical link on the first optical backplane 30 is used to connect the first connector 1 and the second connector 2. Therefore, the first optical signal processor 101 and the second optical signal processor 201 currently transmit and receive optical signals via the first optical link on the first optical backplane 30. It should be understood that the optical signal processor and the selection switch on each optical signal processing board may be independent of each other or integrated together, and the specific details are not limited here.

[0030] From the above description, we know that each optical signal processing board is connected to two optical backplanes. One optical backplane is used as the working optical backplane; the other optical backplane is used as the backup optical backplane to switch to it when the working optical backplane fails. Figure 1 The optical communication equipment shown introduces the switching method of the optical backplane.

[0031] Taking the first optical backplane 30 as an example, the first optical signal processing board 10 can determine whether the first optical link on the first optical backplane 30 is faulty through detection. For example, if the first optical signal processor 101 is currently unable to detect the optical signal from the second optical signal processor 201, the first optical link on the first optical backplane 30 is determined to be faulty. Similarly, the second optical signal processing board 20 can also determine whether the first optical link on the first optical backplane 30 is faulty through a similar detection method. If the first optical link on the first optical backplane 30 fails, the first selection switch 102 and the second selection switch 202 can be switched to switch the first optical backplane 30 to the second optical backplane 40. Specifically, the first optical signal processor 101 is connected to the third connector 3 via the first selection switch 102. The second optical signal processor 201 is connected to the fourth connector 4 via the second selection switch 202. The second optical link on the second optical backplane 40 is used to connect the third connector 3 and the fourth connector 4. Therefore, after the switching between the first optical backplane 30 and the second optical backplane 40 is completed, the first optical signal processor 101 and the second optical signal processor 201 transmit and receive optical signals through the second optical link on the second optical backplane 40 .

[0032] In a specific embodiment, the first selection switch 102 and the second selection switch 202 are controlled by a controller to switch. For example, the controller can be set on a control board, which is connected to the first signal processing board 10 and the second signal processing board 20. The specific figure of the controller is not provided here. The controller can obtain the fault detection result of the first optical backplane 30 fed back by the first optical signal processing board 10 or the second optical signal processing board 20. Furthermore, when the first optical backplane 30 fails, the controller will control the first selection switch 102 and the second selection switch 202 to switch to achieve optical backplane switching. It should be understood that the first selection switch 102 and the second selection switch 202 can be controlled by one controller together, or can be controlled by two different controllers respectively, which is not limited here.

[0033] It should be noted that the present application can design the optical signal processing board and the optical backplane to be detachably connected, so that the faulty optical backplane can be disassembled and repaired after the optical backplane is replaced. In a specific embodiment, the optical signal processing board provided by the present application is orthogonally connected to the optical backplane. Figure 1 The meaning of orthogonal connection is explained by taking the first optical signal processing board 10 and the first optical backplane 30 shown as an example. Assume that the plane where the first optical signal processing board 10 is placed is parallel to the plane where the X-axis and the Y-axis are located, and the plane where the first optical backplane 30 is placed is parallel to the plane where the X-axis and the Z-axis are located. Among them, the X-axis, the Y-axis and the Z-axis are perpendicular to each other. In other words, the first optical signal processing board 10 can be parallel to the first optical backplane 30 by rotating 90° around the X-axis. Similarly, if Figure 1 As shown, the second optical signal processing board 20 is orthogonally connected to the first optical backplane 30 , the first optical signal processing board 10 is orthogonally connected to the second optical backplane 40 , and the second optical signal processing board 20 is orthogonally connected to the second optical backplane 40 .

[0034] It should be understood that since the optical signal processing board and the optical backplane are orthogonally connected, the aforementioned connectors can be located at the intersection of the optical signal processing board and the optical backplane, thereby facilitating the insertion and removal of the optical signal processing board or the optical backplane. In practical applications, the optical signal processing board and the optical backplane can be placed within a chassis. For example, the optical signal processing board can be inserted horizontally at the front of the chassis, while the optical backplane can be inserted vertically at the rear of the chassis. Furthermore, the chassis can be equipped with guide rails for each optical signal processing board and the optical backplane to facilitate on-site insertion and removal of the optical backplane and the optical signal processing board.

[0035] In some possible implementations, the optical signal processing board and the optical backplane may also be connected in a non-orthogonal manner. Figure 1Based on the structure shown, the optical signal processing board or the optical backplane can also be appropriately offset or rotated so that the optical signal processing board and the optical backplane are not completely orthogonal. This type of deformation can also achieve pluggable connection between the optical signal processing board and the optical backplane and is also within the scope of protection of this application.

[0036] In other possible implementations, the optical backplane can also be designed to have a non-detachable connection. For example, even if the backup optical backplane is swapped with the faulty optical backplane, the connection between the faulty optical backplane and the optical signal processing board remains. In other words, there is no need to remove the faulty optical backplane. A specific implementation is provided below with reference to the accompanying drawings.

[0037] Figure 2 This is a schematic diagram of the second structure of the optical communication device in the embodiment of the present application. Figure 2 As shown, the plane where the optical signal processing board is located is perpendicular to the plane where the optical backplane is located, but they are not orthogonally connected. For example, the plane where the first optical signal processing board 10 is placed is parallel to the plane where the Y-axis and the Z-axis are located, and the plane where the first optical backplane 30 is placed is parallel to the plane where the X-axis and the Y-axis are located. Among them, the X-axis, the Y-axis and the Z-axis are perpendicular to each other. In other words, the first optical signal processing board 10 can be rotated 90° around the Y-axis to be parallel to the first optical backplane 30. In this embodiment, the optical signal processing board can also be connected to multiple optical backplanes.

[0038] Figure 3 This is a schematic diagram of the third structure of the optical communication device in the embodiment of the present application. In actual applications, the number of optical backplanes can be more than 2, and the number of optical signal processing boards can also be more than 2. For example Figure 3 As shown, the optical communication device further includes a third optical backplane 50, a fourth optical backplane 60 and a third optical signal processing board 70. The third optical signal processing board 70 is connected to the above-mentioned Figure 1 The structures of the first optical signal processing board 10 or the second optical signal processing board 20 described in the illustrated embodiment are similar and will not be described in detail here. The first optical backplane 30, the third optical backplane 50 and the fourth optical backplane 60 are all working optical backplanes. The second optical backplane 40 can switch any of the above working optical backplanes, thereby realizing a 1:n protection scheme. This scheme improves protection efficiency and reduces the impact of failures. The specific switching method can be referred to above. Figure 1 The relevant introduction of the illustrated embodiment will not be repeated here. It should be understood that the number of spare optical backplanes can also be multiple, and the specific number is not limited here.

[0039] It should be noted that the above Figure 3The 1:n protection scheme introduced in the illustrated embodiment is applicable to scenarios where each working light backplane is identical. Therefore, it is only necessary to prepare a spare light backplane that is identical to the working light backplane to switch any working light backplane. However, in some possible application scenarios, the links on different working light backplanes may also be different. Therefore, the present application may also consider setting up an optical switch array on the spare light backplane, which can be flexibly configured as a link on any working light backplane to achieve switching of any working light backplane. This implementation method is described in detail below with reference to the accompanying drawings.

[0040] Figure 4 This is a schematic diagram of the fourth structure of the optical communication device in the embodiment of the present application. Figure 4 As shown, an optical switch array 401 is provided on the second optical backplane 40. The second optical link on the second optical backplane 40 can be changed by configuring the optical switch array 401. Figure 4 For example, the second optical link can connect the first optical signal processing board 10 and the second optical signal processing board 20. Alternatively, the second optical link can connect the first optical signal processing board 10 and the third optical signal processing board 70. Alternatively, the second optical link can connect the second optical signal processing board 20 and the third optical signal processing board 70. In other words, by configuring the optical switch array 401, three different link configurations can be achieved.

[0041] Figure 5 Schematic diagram of configuring an optical link through an optical switch array in an embodiment of the present application. Figure 5 As shown, the links on the three working optical backplanes, the first optical backplane 30, the third optical backplane 50, and the fourth optical backplane 60, are different. The optical link on the first optical backplane 30 is used to connect the first optical signal processing board 10 and the second optical signal processing board 20. The optical link on the third optical backplane 50 is used to connect the first optical signal processing board 10 and the third optical signal processing board 70. The optical link on the fourth optical backplane 60 is used to connect the second optical signal processing board 20 and the third optical signal processing board 70. Therefore, the optical switch array 401 can be flexibly configured so that the second optical link can be the same as the link on any working optical backplane. In this way, any working optical backplane that has a fault can be switched according to the actual situation.

[0042] In a specific embodiment, the optical switch array 401 on the second optical backplane 40 can also be composed of the above Figure 1 For example, the controller may configure the optical switch array 401 according to the fault condition of any working optical backplane it obtains, so that the optical link on the second optical backplane 40 is the same as the optical link on the faulty optical backplane.

[0043] The optical communication device provided in the embodiment of the present application is introduced above. The switching method of the optical backplane provided in the embodiment of the present application is introduced below.

[0044] Figure 6 This is a flow chart of a method for switching an optical backplane provided in an embodiment of the present application. It should be noted that this method is implemented based on the optical communication equipment described in any of the above embodiments. For details about the structure of the optical communication equipment, please refer to the relevant description of any of the above embodiments and will not be repeated here. In this example, the method for switching an optical backplane includes the following steps.

[0045] 601. Determine whether a first optical link on a first optical backplane is faulty. If so, execute step 602.

[0046] It should be understood that the first optical backplane is the currently working optical backplane, and optical signals are transmitted between the first and second optical signal processing boards via the first optical link on the first optical backplane. For example, the first and second optical signal processing boards can detect whether they can each receive an optical signal. If no optical signal is detected, it can be determined that the first optical link on the first optical backplane has failed. Consequently, the first and second optical signal processing boards will issue a fault alarm.

[0047] 602 . Determine whether the second optical link on the second optical backplane is faulty. If so, execute step 603 ; if not, execute step 604 .

[0048] In some possible implementations, the second optical backplane serves as a backup optical backplane. Before switching to the failed first optical backplane, it is necessary to determine whether the second optical link on the second optical backplane is faulty.

[0049] 603. Send a fault alarm.

[0050] If a fault is detected in the second optical link on the second optical backplane, a fault alarm is sent.

[0051] 604. Use the second optical backplane to replace the first optical backplane.

[0052] If the first optical link on the first optical backplane fails and the second optical link on the second optical backplane is not faulty, the spare second optical backplane can be switched with the first optical backplane. Figure 1Taking the optical communication device shown in FIG. as an example, the first optical signal processor 101 is connected to the third connector 3 via the first selector switch 102. The second optical signal processor 201 is connected to the fourth connector 4 via the second selector switch 202. The second optical link on the second optical backplane 40 is used to connect the third connector 3 and the fourth connector 4. After the first optical backplane 30 and the second optical backplane 40 are switched, the first optical signal processor 101 and the second optical signal processor 201 transmit and receive optical signals via the second optical link on the second optical backplane 40.

[0053] In some possible implementations, if the above Figure 4 The optical communication device shown, namely the second optical backplane, also includes an optical switch array. Therefore, the optical switch array must first be configured so that the second optical link on the second optical backplane is identical to the first optical link on the first optical backplane. The second optical backplane can then be switched with the first optical backplane.

[0054] 605 . Determine whether the first optical link on the first optical backplane has recovered from the fault. If so, execute step 606 ; if not, execute step 607 .

[0055] In some possible implementations, the faulty optical backplane can be removed and sent for inspection and repair. When the repaired first optical backplane is reinserted, it is necessary to first determine whether the repaired optical backplane has recovered from the fault. This will determine whether the currently working second optical backplane can be switched.

[0056] 606. Send a fault alarm.

[0057] If the fault of the first optical link on the first optical backplane has not been restored, a fault alarm is sent.

[0058] 607. Use the first optical backplane to switch the second optical backplane.

[0059] If it is detected that the first optical link on the first optical backplane after repair is normal, the first optical backplane after repair can be used to switch the second optical backplane. In this way, the second optical backplane can be restored to a standby state to be ready to switch to other working optical backplanes that may have faults at any time. The specific switching method can be regarded as the reverse process of the switching method introduced in step 604, and will not be described in detail here.

[0060] In some possible implementations, if the above Figure 4 The optical communication device shown, namely the second optical backplane, also includes an optical switch array. After the second optical backplane is replaced with the repaired first optical backplane, the current configuration of the optical switch array can be cleared. This restores the second optical backplane to a standby state, allowing the optical switch array to be reconfigured the next time a switchover is required.

[0061] In an embodiment of the present application, each optical signal processing board in the optical communication equipment is connected to at least two optical backplanes, wherein the first optical backplane is the currently working optical backplane and the second optical backplane is the backup optical backplane. If the first optical link on the first optical backplane fails, the selector switch on the optical signal processing board is controlled to switch to disconnect the optical signal processing board from the first optical backplane and connect the optical signal processing board to the second optical backplane. In other words, when an optical backplane fails, the backup optical backplane can be used to replace the failed optical backplane. This ensures the normal transmission of optical signals without having to replace the entire optical communication equipment, making maintenance much simpler.

Claims

1. An optical communication device, characterized in that: include: A first optical signal processing board, a second optical signal processing board, a first optical backplane, and a second optical backplane, wherein: The first optical signal processing board is connected to the first optical backplane via a first connector, the second optical signal processing board is connected to the first optical backplane via a second connector, the first optical signal processing board is connected to the second optical backplane via a third connector, and the second optical signal processing board is connected to the second optical backplane via a fourth connector. The first optical signal processing board is provided with a first optical signal processor and a first selection switch, and the first optical signal processor is connected to the first connector via the first selection switch. The second optical signal processing board is provided with a second optical signal processor and a second selection switch, and the second optical signal processor is connected to the second connector via the second selection switch. The first optical signal processing board and the second optical signal processing board are used to determine whether a first optical link on the first optical backplane is faulty, the first optical link being used to connect the first connector and the second connector; When the first optical signal processing board and the second optical signal processing board determine that the first optical link fails, the first optical signal processing board is used to connect the first optical signal processor to the third connector through the first selection switch, and the second optical signal processing board is used to connect the second optical signal processor to the fourth connector through the second selection switch.

2. The optical communication device according to claim 1, wherein The first optical signal processing board is orthogonally connected to the first optical backplane, the second optical signal processing board is orthogonally connected to the first optical backplane, the first optical signal processing board is orthogonally connected to the second optical backplane, and the second optical signal processing board is orthogonally connected to the second optical backplane.

3. The optical communication device according to claim 1 or 2, characterized in that The second optical backplane includes an optical switch array. The second optical backplane is used to configure the optical switch array according to the first optical link to form a second optical link. The second optical link is used to connect the third connector and the fourth connector.

4. The optical communication device according to any one of claims 1 to 3, characterized in that: There are multiple first optical backplanes, and the second optical backplane is a backup optical backplane for any one of the first optical backplanes.

5. The optical communication device according to any one of claims 1 to 4, characterized in that: The first optical backplane is detachably connected to the first optical signal processing board and the second optical signal processing board, and the second optical backplane is detachably connected to the first optical signal processing board and the second optical signal processing board.

6. A method for switching an optical backplane, characterized in that: The method is applied to optical communication equipment, which includes a first optical signal processing board, a second optical signal processing board, a first optical backplane, and a second optical backplane. The first optical signal processing board is connected to the first optical backplane via a first connector, the second optical signal processing board is connected to the first optical backplane via a second connector, the first optical signal processing board is connected to the second optical backplane via a third connector, and the second optical signal processing board is connected to the second optical backplane via a fourth connector. The first optical signal processing board is provided with a first optical signal processor and a first selection switch, the first optical signal processor is connected to the first connector via the first selection switch, the second optical signal processing board is provided with a second optical signal processor and a second selection switch, and the second optical signal processor is connected to the second connector via the second selection switch. The method includes: determining whether a first optical link on the first optical backplane is faulty, the first optical link being used to connect the first connector and the second connector; When it is determined that the first optical link fails, the first optical signal processor is connected to the third connector through the first selection switch, and the second optical signal processor is connected to the fourth connector through the second selection switch.

7. The method according to claim 6, characterized in that The first optical signal processing board is orthogonally connected to the first optical backplane, the second optical signal processing board is orthogonally connected to the first optical backplane, the first optical signal processing board is orthogonally connected to the second optical backplane, and the second optical signal processing board is orthogonally connected to the second optical backplane.

8. The method according to claim 6 or 7, characterized in that The second optical backplane includes an optical switch array, and the method further includes: The optical switch array is configured according to the first optical link to form a second optical link, where the second optical link is used to connect the third connector and the fourth connector.

9. The method according to any one of claims 6 to 8, characterized in that The method further comprises: Determine whether the first optical link on the first optical backplane has recovered from a fault; When it is confirmed that the first optical link on the first optical backplane is restored, the first optical signal processor is connected to the first connector through the first selection switch, and the second optical signal processor is connected to the second connector through the second selection switch.

10. The method according to any one of claims 6 to 9, characterized in that The method further comprises: Determining whether the second optical link is faulty; When it is confirmed that the second optical link fails, a failure alarm is sent.

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