Array optical switch and manufacturing and calibration method and calibration device thereof

Abstract

The invention relates to the technical field of optical communication, in particular to an array optical switch and a manufacturing and calibration method and device thereof. The method comprises the following steps: obtaining a second optical switch device corresponding to a first optical switch device, sequentially selecting a first channel from the first optical switch device, randomly selecting a second channel from the corresponding second optical switch device, and welding the first channel and the second channel to obtain a target array optical switch; connecting a first test channel of the first test optical switch with a first single channel of the first optical switch device, and connecting a second test channel of the second test optical switch with a second single channel of the second optical switch device; a first test single channel of the first test optical switch is connected with a light source, and a second test single channel of the second test optical switch is connected with an optical power meter; starting the light source, adjusting the conduction channels of the first and second test optical switches and the target array optical switch, and completing the calibration of the target array optical switch according to the measurement result of the optical power meter. The production efficiency can be improved, and the production cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of optical communication technology, and in particular to an array optical switch and a manufacturing and calibration method and a calibration device thereof. Background Art

[0002] Array optical switches are usually made of at least two optical switch devices with one input port and multiple output ports, with their respective output ports fused together. Each optical switch device and its respective channel port are numbered and sorted, and a multi-device cascade relationship table is prepared. The operator needs to perform fiber optic fusion splicing on the optical fibers of the specified channel in pairs according to the instructions of the device cascade relationship table. Finally, the test station needs to perform parameter performance testing and judgment on each channel of the array optical switch according to the device cascade relationship table.

[0003] As the number of channels in the device increases, the number of fiber splices will also increase exponentially. To accurately locate and calibrate all channels, the operator needs to be highly careful and patient, and the entire product production process is very complicated and time-consuming. Summary of the invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide an array optical switch and a manufacturing and calibration method thereof, so as to solve the problems in the prior art that the requirements on operators are high and the product production process is very complicated and time-consuming.

[0005] The present invention discloses a method for manufacturing and calibrating an array optical switch, comprising:

[0006] The N 1×M channel first optical switch devices and the M 1×N channel second optical switch devices to be spliced ​​are numbered according to a preset rule, wherein N and M are both integers greater than 1;

[0007] For each of the first optical switch devices, obtain the corresponding second optical switch device, select a first channel that has not been fused from the first optical switch devices in order, and randomly select a second channel that has not been fused from the corresponding second optical switch devices to be fused with the first channel to obtain a target array optical switch;

[0008] Connect the N first test channels of the first test optical switch of the 1×X channel to the first single channels of the N first optical switch devices in one-to-one correspondence, and connect the M second test channels of the second test optical switch of the 1×Y channel to the second single channels of the M second optical switch devices in one-to-one correspondence, where X≥N, Y≥M;

[0009] A light source is arranged at the input side of the first test single channel of the first test optical switch, and an optical power meter is connected to the second test single channel of the second test optical switch;

[0010] The incoming calibration data of each device of the target array optical switch is obtained, and the incoming calibration data can be referred to as candidate calibration data. The light source is started, and the conduction channels of the first test optical switch, the second test optical switch, and the target array optical switch are adjusted. According to the candidate incoming calibration data of each channel of the target array optical switch and the measurement result of the optical power meter, the calibration of each conduction channel of the target array optical switch is judged and completed, that is, the calibration value corresponding to each conduction channel is found.

[0011] Optionally, the step of adjusting the conduction channels of the first test optical switch, the second test optical switch and the target array optical switch includes:

[0012] driving the first test optical switch to sequentially conduct each first test channel, so that the first optical switch device can be input with an optical signal in sequence;

[0013] When a first test channel of the first test optical switch is turned on, driving the first optical switch device connected to the first test channel to sequentially turn on each first output channel;

[0014] When a first output channel is turned on, driving the second test optical switch to sequentially turn on each second test channel, so that the second test optical switch is sequentially connected to each second optical switch device;

[0015] When one of the second test channels is turned on, each second output channel of the second optical switch device connected to the second test channel is driven to be turned on in sequence.

[0016] Optionally, the step of driving each second output channel of the second optical switch device connected to the second test channel to be turned on in sequence comprises:

[0017] When one of the second output channels of one of the second optical switch devices is turned on, obtaining a reading of the optical power meter;

[0018] When the reading meets the conduction standard corresponding to the calibration data, the second output channel currently being conducted is used as a calibration channel;

[0019] Acquire a first identifier of a first optical switch device connected to the first test channel that is currently turned on and a second identifier of a second optical switch device connected to the second test channel;

[0020] The calibration channel is calibrated according to the first identifier and the second identifier.

[0021] Optionally, after the step of calibrating according to the first identifier and the second identifier, the step further includes:

[0022] Determining whether all second channels corresponding to the first optical switch device currently turned on have been calibrated;

[0023] If not, the first optical switch device currently turned on is driven to switch to turn on the next first output channel.

[0024] Optionally, after the step of determining whether the first optical switch device currently turned on has been calibrated, the following step is further performed:

[0025] If so, the first test optical switch is driven to conduct the next first test channel.

[0026] Optionally, after the step of obtaining the reading of the optical power meter, the method further comprises:

[0027] When the reading does not meet the conduction standard, the second optical switch device is driven to re-retrieve the candidate incoming calibration data of the second optical switch device and switch to another candidate incoming calibration data. After each switch, it is necessary to determine whether the current reading meets the standard. If it meets the standard, it means that the candidate incoming calibration data currently used is the calibration value of the channel currently turned on.

[0028] Optionally, after the step of calibrating the target array optical switch according to the measurement result of the optical power meter and the calibration data, the method further comprises:

[0029] A full-function performance test is performed on the target array optical switch according to the calibration result.

[0030] The present invention also discloses a calibration device for an array switch, the calibration device for the array switch comprising:

[0031] A 1×X-channel first test optical switch, wherein the X first test channels are used for one-to-one connection with the N input single channels of the array optical switch;

[0032] A 1×Y-channel second test optical switch, wherein the Y second channels are used to be connected to the M output single channels of the array optical switch in a one-to-one correspondence; wherein X≥N, Y≥M;

[0033] A light source connected to the input channel of the first test optical switch, and used to provide a calibration light source;

[0034] an optical power meter connected to a single output channel of the second test optical switch and used to obtain an output of the second test optical switch;

[0035] A calibration operation controller is connected to each component of the calibration device to implement the method as described above.

[0036] The present invention also discloses an array optical switch, wherein the array switch is manufactured and calibrated by the method as described above.

[0037] Compared with the prior art, the array optical switch and the manufacturing and calibration method thereof provided by the embodiment of the present invention have the following beneficial effects: for each of the first optical switch devices, the corresponding second optical switch device is obtained, a first channel that has not been fused is selected in sequence from the first optical switch devices, and a second channel that has not been fused is randomly selected from the corresponding second optical switch devices to be fused with the first channel, thereby simplifying the optical fiber fusion process, avoiding the complex steps of precisely matching the optical fiber sequence in the traditional fusion method, and improving the operation efficiency. Then, an automated calibration and testing method is adopted to realize fast and accurate calibration and testing of each channel, reduce the influence of human factors on the calibration results, improve the consistency and reliability of product calibration, and effectively improve the product yield, thereby achieving improved production efficiency and reduced costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The scheme of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0039] Figure 1 It is a flow chart of an embodiment of a method for manufacturing and calibrating an array optical switch provided by the present invention;

[0040] Figure 2 It is a schematic structural diagram of an embodiment of the array switch provided by the present invention;

[0041] Figure 3 It is a structural schematic diagram of an embodiment of a calibration device provided by the present invention;

[0042] Figure 4 It is a schematic diagram of an embodiment of a calibration scenario of an array optical switch provided by the present invention.

[0043] The reference numerals in the figures are:

[0044] 10. Array optical switch; 11. First optical switch device; 111. First channel; 112. Single input channel; 12. Second optical switch device; 121. Second channel; 122. Single output channel; 20. Calibration device; 21. First test optical switch; 211. First test channel; 212. Single input channel; 22. Second test optical switch; 221. Second test channel; 222. Single output channel; 23. Light source; 24. Optical power meter; 25. Calibration operation controller. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, the preferred embodiments of the present invention are described in detail.

[0046] Please refer to Figure 1-Figure 4, Figure 1 is a flow chart of an embodiment of a method for manufacturing and calibrating an array optical switch provided by the present invention, Figure 2 is a schematic structural diagram of an embodiment of the array switch provided by the present invention, Figure 3 It is a structural schematic diagram of an embodiment of the calibration device provided by the present invention.

[0047] like Figure 2 As shown, the array optical switch 10 includes N 1×M channel first optical switch devices 11 and M 1×N channel second optical switch devices 12. The N first optical switch devices 11 have a total of N×M first channels 111, and the M second optical switch devices 12 have a total of M×N second channels 121. The N×M first channels 111 and the M×N second channels 121 are connected one by one, thereby forming an N×M array switch 10. The N first optical switch devices 11 have a total of N input single channels 112, and the M second optical switch devices 12 have a total of M output single channels 122.

[0048] like Figure 3 As shown, the calibration device 20 is used to calibrate Figure 2 The array optical switch 10 shown includes a first test optical switch 21 of 1×X channels, a second test optical switch 22 of 1×Y channels, a light source 23, an optical power meter 24, and a calibration operation controller 25. Where X≥N, Y≥M. The X first test channels 211 of the first test optical switch 21 are used to be connected to the N input single channels 112 of the array optical switch in a one-to-one correspondence, and the Y second channels 221 of the second test optical switch 22 are used to be connected to the M output single channels 122 of the array optical switch in a one-to-one correspondence.

[0049] Specifically, if Figure 4 Make the connections as shown. Figure 4 In the example, X=N, Y=M, the first test channels 211 are connected to the input single channels 112 in one-to-one correspondence. In other implementation scenarios, when X>N, Y>M, the N first test channels 211 are connected to the input single channels 112 in one-to-one correspondence, and the remaining first test channels 211 are left vacant, and the M second test channels 221 are connected to the output single channels 122 in one-to-one correspondence, and the remaining second test channels 221 are left vacant.

[0050] The light source 13 is connected to the single input channel 212 of the first test optical switch 21 to provide calibration and test optical signals. The optical power meter 24 is connected to the single output channel 222 of the second test optical switch 22 to obtain the intensity of the output optical signal of the second test optical switch 22 .

[0051] The calibration operation controller 25 is connected to the first test optical switch 21 of the 1×X channel, the second test optical switch 22 of the 1×Y channel, the light source 23, the optical power meter 24 and the array switch 10 to be calibrated, and is used to control the light source 23 to emit signal light, and then drive the first test optical switch 21 of the 1×X channel, the second test optical switch 22 of the 1×Y channel and the array switch 10 to sequentially turn on their respective channels according to preset rules to combine into multiple optical transmission paths, and judge whether the current optical transmission path is turned on in combination with the reading of the optical power meter 24. If the optical power read by the optical power meter 24 meets the preset threshold, it is determined that the current optical transmission path is turned on. If the optical power read by the optical power meter 24 is low and does not meet the preset threshold, it indicates that the current optical transmission path is not turned on, and switches to the next optical transmission path for detection.

[0052] The calibration operation controller 25 can also control the target array optical switch, the first test optical switch, and the second test optical switch, and fine-tune the calibration value that has been calibrated and found, so that the reading on the optical power achieves the best effect. The calibration value at this time can replace the calibration value found before, and be used as the final calibration value and written into the product memory for user use.

[0053] The method for manufacturing and calibrating an array optical switch provided by the present invention comprises the following steps:

[0054] S101: N 1×M channel first optical switch devices and M 1×N channel second optical switch devices to be spliced ​​are numbered according to a preset rule, wherein N and M are both integers greater than 1.

[0055] In a specific implementation scenario, construct Figure 2 The N×M array optical switch device shown in the figure needs to fuse N 1×M channel first optical switch devices and M 1×N channel second optical switch devices together. In order to facilitate the subsequent welding of optical channels and calibration after welding, the first optical switch devices and the second optical switch devices are numbered according to preset rules. For example, the first optical switch devices can be marked as 01, 02, 03... in sequence, and the second optical switch devices can be marked as S01, S02, S03... in sequence.

[0056] In other implementation scenarios, the channels of the optical switch device can also be numbered. If there is a first optical switch device with 3 1×4 channels, they can be numbered as follows: the first channel is numbered A1, A2, A3, A4, the second channel is numbered B1, B2, B3, B4, and the third channel is numbered C1, C2, C3, C4.

[0057] S102: For each first optical switch device, obtain its corresponding second optical switch device, select first channels that have not been fused in order from the first optical switch devices, randomly select a second channel that has not been fused from the corresponding second optical switch devices to be fused with the first channel, and obtain a target array optical switch.

[0058] In a specific implementation scenario, each first optical switch device is subjected to a welding operation with a second optical switch device in the order of the numbers. The M first channels of the current first optical switch device are respectively welded in sequence with any second channel of each optical switch device of the corresponding at least one second optical switch device that has not been welded. This is repeated until all the first channels have been welded with the second channels, and the target array optical switch is formed by the first optical switch device and the second optical switch device, and the target array optical switch is an N×M array optical switch.

[0059] For example, the three first channels of the 1×3 first optical switch device 01 need to be connected to the second channels of the three 1×2 second optical switch devices S01, S02 and S03 respectively. Then, one second channel that has not been fused in the second optical switch device S01 is selected, one second channel that has not been fused in the second optical switch device S02 is selected, and one second channel that has not been fused in the second optical switch device S03 is selected, and they are fused to the three first channels of the first optical switch device 01 respectively. For example, the three first channels of the first optical switch device 01 are numbered a, b, and c respectively. The first channels a, b, and c correspond to the second optical switch devices S01, S02, and S03 respectively. The first channel a can correspond to any second channel of the second optical switch device S01, the first channel b can correspond to any second channel of the second optical switch device S02, and the third channel c can correspond to any second channel of the second optical switch device S03. It is only necessary to ensure that each first channel of the current first optical switch device is connected to a different second optical switch device.

[0060] In this way, the difficulty and complexity of welding are greatly reduced, and workers do not need to find the specified optical fiber in the corresponding device cascade relationship table to weld, but only need to ensure that each first channel of the first optical switch device corresponds to the second optical switch device in sequence, and work efficiency can also be improved. However, the target array optical switch welded in this way does not know the connection relationship between the first channel and the second channel, and calibration is required.

[0061] In other implementation scenarios, a label correspondence relationship can be obtained, and the label correspondence relationship is used to specify the connectivity relationship between the first optical switch device and the second optical switch device. For example, 01-01, 01-S02, 01-S03, indicating that the first optical switch device No. 01 needs to be connected with the three second optical switch devices S01, S02, and S03, or S02-01, S02-02, indicating that the optical switch device No. S02 needs to be connected with the two first optical switch devices 01 and 02.

[0062] The corresponding relationship of the labels indicates that each first optical switch device corresponds to each second optical switch device, and each second optical switch device also corresponds to each first optical switch device. When the first channel and the second channel are welded, each second optical switch device corresponding to the current first optical switch device is obtained, and an optical channel that has not been welded is selected from the first optical switch device with a corresponding relationship and the specified second optical switch device for welding.

[0063] S103: Connect the X channels of the 1×X channel first test optical switch to the first single channels of the N first optical switch devices respectively, and connect the Y channels of the 1×Y channel second test optical switch to the second single channels of the M second optical switch devices respectively, where X≥N, Y≥M.

[0064] In a specific implementation scenario, such as Figure 4 As shown, N first test channels among the X channels of the first test optical switch of the 1×X channel are connected to the first single channels of the N first optical switch devices in a one-to-one correspondence, and M second test channels among the Y channels of the second test optical switch of the 1×Y channel are connected to the second single channels of the N second optical switch devices in a one-to-one correspondence. The connection is a detachable connection, and after the calibration is completed, the target array optical switch can be removed from the calibration device.

[0065] S104: a light source is arranged at the input side of the first test single channel of the first test optical switch, and an optical power meter is connected to the second test single channel of the second test optical switch.

[0066] In a specific implementation scenario, please continue to refer to Figure 4 A light source is arranged on the input side of the first test single channel of the first test optical switch, and the second test single channel of the second test optical switch is connected to the optical power meter. When the light source is started, the optical signal can be received by the first test single channel and output by a first test channel of the first test optical switch. The first test channel is connected to a first optical switch device, and the first optical switch device is connected to a second optical switch device. The single channel output of the second optical switch device is connected to the second test channel of the second test optical switch. Then, the optical signal will eventually be transmitted to the optical power meter, received by the optical power meter, and finally acquired by the calibration operation controller.

[0067] S105: Acquire calibration data of each channel of all first optical switch devices and second optical switch devices in the target array optical switch, start the light source, adjust the conduction channels of the first test optical switch, the second test optical switch and the target array optical switch, and calibrate the target array optical switch according to the measurement result of the optical power meter.

[0068] In a specific implementation scenario, the calibration data of each channel of all optical switch devices in the target array optical switch is obtained, the first test optical switch, the second test optical switch and the target array optical switch are controlled to switch the conduction channels, and the preset threshold value inside the calibration operation controller is obtained. This value can help the target array optical switch quickly find the correct channel calibration data to avoid the calibration process taking too long or crashing.

[0069] After starting the light source, the first test optical switch receives the test optical signal output by the light source, drives the first test optical switch, the second test optical switch and the target array optical switch to switch the conduction channels according to preset rules, monitors the measurement results of the optical power, and calibrates the target array optical switch according to the measurement results.

[0070] Specifically, the N first test channels of the first test optical switch connected to the first optical switch device are in a conducting state in sequence, so that the test optical signal received by the first test optical switch can be transmitted to each first optical switch device in sequence. When a first test channel is in a conducting state, the M first channels of the first optical switch device connected to the first test channel are driven to be in a conducting state in sequence.

[0071] When a first channel is in the on state, each second channel of each second optical switch device can be switched and the reading of the optical power meter can be detected at the same time. If the reading of the optical power meter meets the preset threshold when a second channel is turned on, it can be considered that the second channel and the first channel are turned on, and the second identifier of the second optical switch device where the second channel is located and the first identifier of the first optical switch device where the first channel is located are obtained, and the calibration value of the first channel is clarified and the calibration value of the second channel is confirmed.

[0072] In one embodiment, the recorded calibration channel is (yx), and the corresponding calibration value is (yN, Sx-y), wherein y in yN represents the number of the first optical switch device in the NxM array optical switch, and N is the pipeline channel number during calibration, wherein Sx in Sx-y is the number of the second optical switch device in the NxM array optical switch, and y is the number of the first optical switch device in the array optical switch.

[0073] Specifically, the M second test channels of the second test optical switch and the second optical switch device can be driven to be turned on in sequence. When a second test channel is turned on, the N second channels of the second optical switch device connected to the second test channel are driven to be turned on in sequence.

[0074] In other implementation scenarios, when a first channel is turned on and a second channel is also in the turned-on state, the reading of the optical power meter is obtained; if the reading of the optical power meter meets the preset threshold, it means that the second channel is connected to the first channel, and the calibration value of the calibration data of the second optical switch device used by the second channel at this time is correct. At the same time, since the second channel connected to the first channel has been found, the N calibration data of the current second optical switch device are no longer driven for trial matching detection.

[0075] It is determined whether the first channel is the last first channel of the first optical switch device in which it is located. If not, it means that the second channel corresponding to the first optical switch device has not been calibrated yet, and the first optical switch device is driven to switch the next first channel to the on state. Then the second test optical switch is driven to sequentially drive the second test channels to be turned on starting from the first second test channel, and when each second test channel is turned on, the second channel of the second optical switch device connected to the currently turned-on second test channel is driven to be turned on in sequence, and the reading of the optical power meter is monitored to calibrate the next first channel to the second channel.

[0076] If yes, it means that the second channel corresponding to the first optical switch device has been calibrated, and the next first optical switch device needs to be calibrated, and the first test optical switch is driven to switch the next first test channel on, and the first optical switch device connected to the next first test channel is driven to sequentially turn on each first channel. When a first channel is turned on, the second test optical switch is driven to sequentially drive the second test channels starting from the first second test channel to turn on, and when each second test channel is turned on, the second channels of the second optical switch devices connected to the turned-on second test channel are driven to turn on in sequence, and the reading of the optical power meter is monitored to calibrate the first channel to the second channel.

[0077] In other implementation scenarios, when a first channel is turned on and a second channel is also in the on state, the reading of the optical power meter is obtained; if the reading of the optical power meter does not meet the preset threshold, it means that the second channel is not connected to the first channel, and the current incoming calibration data of the second optical switch device needs to be switched to the next incoming calibration data to make the next second channel of the second optical switch device turned on. The incoming calibration data of the second optical switch device is continuously switched until the optical power reading meets the preset threshold. At this point, it means that the calibration value from the first channel to the second channel has been found.

[0078] When retrieving the incoming calibration data value of the second optical switch device, the calibration operation controller can automatically remove the incoming calibration data of the second optical switch device that has been successfully matched before, so as to reduce the number of samples of candidate incoming calibration data to improve the efficiency of calibration. In other words, the second optical switch device or the second channel of the second optical switch device that has been calibrated can be skipped. For example, if the first second channel of a second optical switch device has been calibrated, then in the subsequent calibration process, the detection starts directly from the second second channel of the second optical switch device. For another example, if all the second channels of the first second channel have been calibrated, then in the subsequent calibration process, all the second channels of the second optical switch device will no longer be detected.

[0079] In one embodiment, it is determined whether the second output channel currently turned on is the last channel of the second optical switch device that was previously turned on. If so, the second test optical switch is driven to turn on the next second test channel, and the next second test channel is driven to turn on each second test channel in sequence starting from the first second test channel, and the reading of the optical power meter is monitored to calibrate the first channel.

[0080] If not, the second test optical switch is driven to conduct the next second test channel, and the reading of the optical power meter is obtained; if the reading of the optical power meter does not exceed the preset threshold, it means that the second channel is not connected to the first channel, and the above steps are repeated. If the reading of the optical power meter exceeds the preset threshold, it means that the second channel is connected to the first channel, and the second channel is calibrated.

[0081] In one embodiment, please refer to Figure 4 , Figure 4 is a structural schematic diagram of an embodiment of a calibration scenario of an array optical switch provided by the present invention, Figure 4 The array optical switch in the embodiment is composed of two 1×3 first optical switch devices and three 1×2 second optical switch devices. The two first optical switch devices are labeled 01 and 02, and the three second optical switch devices are labeled S01, S02, and S03. A 1×2 first test optical switch and a 1×3 second test optical switch are prepared. The two first test channels (a, b) of the first test optical switch are respectively connected to the first single channels (A, B) of the two first optical switch devices, and the three second test channels (c, d, e) of the second test optical switch are respectively connected to the second single channels (C, D, E) of the three second optical switch devices.

[0082] During the calibration process, the first test channel a of the first test optical switch is first driven to be turned on, so that the optical signal can be transmitted to the first single channel A through the first test channel a, the first channel of the first optical switch device 01 is driven to be turned on, and the second test channel c of the second test optical switch is driven to be turned on, so that the signal of the second optical switch device S01 can be transmitted to the channel c of the second test optical switch through the second single channel C, and thus detected by the optical power meter. The second optical switch device S01 is driven to poll according to the incoming calibration data of S01, and the incoming calibration data that can make the first second channel turned on is found, that is, the conduction calibration data of the first optical switch device 01 and the second optical switch device S01 are obtained.

[0083] If the detected optical power value does not meet the preset threshold, it means that the set of incoming material calibration data selected by the second optical switch device S01 is incorrect. At this time, the second optical switch device S01 rotates another set of incoming material calibration data of S01 until the optical power value meets the preset threshold.

[0084] If the value of the optical power detected meets the preset threshold, it means that the second channel is connected to the first channel of the first optical switch device 01, and the second channel is calibrated as (1-1). The corresponding calibration value is (01-1, S01-1), where 01 represents the first optical switch device labeled 01, 1 is the pipeline channel number, S01 represents the second optical switch device labeled S01, and 1 represents the first optical switch device labeled 01.

[0085] Since the first first channel of the first optical switch device 01 has been calibrated, the second first channel of the first optical switch device 01 is driven to be in the on state. The second test channel d of the second test optical switch is driven to be on, and the first second channel of the second optical switch device S02 is driven to be on. In the same way, the second optical switch device S02 is driven to poll according to the incoming calibration data of S02, and the incoming calibration data that can make the second second channel on is found, that is, the on calibration data of the first optical switch device 01 and the second optical switch device S02 is obtained.

[0086] When the value of the optical power detected meets the preset threshold, it means that the second channel is connected to the second channel of the first optical switch device 01, and the second channel is calibrated as (1-2). The corresponding calibration value is (01-2, S02-1), where 01 represents the first optical switch device labeled 01, 2 is the pipeline channel number, S02 represents the second optical switch device labeled S02, and 1 represents the first optical switch device labeled 01.

[0087] Since the first and second first channels of the first optical switch device 01 have been calibrated, the third first channel of the first optical switch device 01 is driven to be in the on state. In the same way, the on calibration data of the first optical switch device 01 and the second optical switch device S03 are obtained, and the second channel is calibrated as (1-3), and the corresponding calibration value is (01-3, S03-1). At this point, the second channels of the several second optical switch devices corresponding to the first optical switch device have all completed the calibration work.

[0088] Next, the second channel corresponding to the first optical switch device 02 is calibrated. The calibration process is similar to the calibration process of the second channel corresponding to the first optical switch device 01, and will not be described in detail here.

[0089] After completing the calibration operation of all channels of all optical switch devices in the target array optical switch, the calibration data is written into the internal memory of the NxM array optical switch for subsequent real-time call in actual applications. The user can select the specific channel to be used when using it, read the calibration data of the specific channel, and control the corresponding first optical switch device and the second optical switch device to conduct the corresponding first channel and the second channel respectively according to the calibration data. In the implementation scenario, see Figure 4 , the user needs the target array optical switch AE port to be turned on, that is, the first optical switch device 01 and the second optical switch device S03 need to be turned on. After receiving the instruction, the target array optical switch will trigger the first optical switch device 01 to switch to the third first channel, and trigger the second optical switch device S03 to switch to the first second channel, thereby achieving the user's desired target array optical switch AE port conduction requirement.

[0090] In an implementation scenario, after all channels of the target array optical switch have been calibrated, the calibrated data is essentially the sorting of the calibration data of the incoming optical switch materials. When the optical switch devices are assembled into the specific target array optical switch products, the incoming calibration data may not be the best value, which in turn leads to the optical performance of the target array optical switch not being in the best state. To this end, we can use Figure 3 The described calibration device is further optimized, that is, the first test optical switch, the first optical switch device and the second optical switch device in the target array optical switch, and the second test optical switch are controlled and driven, and each optical path in the target array optical switch is turned on one by one, so that the optical power meter can receive the optical signal. After each optical path is turned on, the first optical switch device and the second optical switch device on the corresponding optical path are controlled and driven to fine-tune the calibration value. When the optical signal received on the optical power meter reaches the maximum, the driving value of the first optical switch device and the second optical switch device at this time replaces the original calibration value. In this way, the optimal calibration value of all channels of the target array optical switch is obtained.

[0091] In one implementation scenario, after all channels of the target array optical switch are calibrated, a full-function performance test is performed on the target array optical switch according to the calibration results. Specifically, it is possible to confirm whether the previous calibration is correct, and to test other performances of the target array optical switch, such as insertion loss, return loss, crosstalk, etc. It is also possible to test its communication performance, including switching time, etc.

[0092] It can be seen from the above description that in this embodiment, for each first optical switch device, the corresponding second optical switch device is obtained, a first channel that has not been fused is selected in sequence from the first optical switch devices, and a second channel that has not been fused is randomly selected from the corresponding second optical switch devices to be fused with the first channel to obtain the target array optical switch, simplify the fiber fusion process, avoid the complex steps of accurately matching the fiber sequence in the traditional fusion method, improve the operation efficiency, adopt the automated calibration method, realize the fast and accurate calibration of each channel, greatly shorten the calibration process, reduce the influence of human factors on the calibration results, improve the consistency and reliability of product calibration, effectively improve the product yield, thereby achieving the improvement of production efficiency and the reduction of cost.

[0093] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0094] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0095] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A method for manufacturing and calibrating an array optical switch, characterized in that: include: The N 1×M channel first optical switch devices and the M 1×N channel second optical switch devices to be spliced ​​are numbered according to a preset rule, wherein N and M are both integers greater than 1; For each of the first optical switch devices, obtain the corresponding second optical switch device, select the first channels that have not been fused in order from the first optical switch devices, randomly select a second channel that has not been fused from the corresponding second optical switch devices to be fused with the first channel, and obtain a target array optical switch; Connect the N first test channels of the first test optical switch of the 1×X channel to the first single channels of the N first optical switch devices in one-to-one correspondence, and connect the M second test channels of the second test optical switch of the 1×Y channel to the second single channels of the M second optical switch devices in one-to-one correspondence, where X≥N, Y≥M; A light source is arranged at the input side of the first test single channel of the first test optical switch, and an optical power meter is connected to the second test single channel of the second test optical switch; The calibration data of each of the first optical switch device and the second optical switch device of the target array optical switch is obtained, the light source is started, the conduction channels of the first test optical switch, the second test optical switch and the target array optical switch are adjusted, and according to the measurement result of the optical power meter, the calibration of each conduction channel of the target array optical switch is determined and completed.

2. The method for manufacturing and calibrating an array optical switch according to claim 1, characterized in that: The step of adjusting the conduction channels of the first test optical switch, the second test optical switch and the target array optical switch comprises: driving the first test optical switch to sequentially conduct each first test channel, so that the first optical switch device can be input with an optical signal in sequence; When a first test channel of the first test optical switch is turned on, driving the first optical switch device connected to the first test channel to sequentially turn on each first output channel; When a first output channel is turned on, driving the second test optical switch to sequentially turn on each second test channel, so that the second test optical switch is sequentially connected to each second optical switch device; When one of the second test channels is turned on, each second output channel of the second optical switch device connected to the second test channel is driven to be turned on in sequence.

3. The method for manufacturing and calibrating an array optical switch according to claim 2, characterized in that: The step of driving each second output channel of the second optical switch device connected to the second test channel to be turned on in sequence comprises: When one of the second output channels of one of the second optical switch devices is turned on, obtaining a reading of the optical power meter; Determining whether the reading meets a conduction standard corresponding to the current calibration data of the second optical switch device; If the second output channel currently turned on is used as a calibration channel, calibration is performed according to the calibration data currently used; Acquire a first identifier of a first optical switch device connected to the first test channel that is currently turned on and a second identifier of a second optical switch device connected to the second test channel; The calibration channel is calibrated according to the first identifier and the second identifier.

4. The method for manufacturing and calibrating an array optical switch according to claim 3, characterized in that: After the step of calibrating according to the first identifier and the second identifier, the method further comprises: Determining whether all second channels corresponding to the first optical switch device currently turned on have been calibrated; If not, the first optical switch device currently turned on is driven to switch to turn on the next first output channel.

5. The method for manufacturing and calibrating an array optical switch according to claim 4, characterized in that: After the step of determining whether the calibration of the first optical switch device currently turned on is completed, the method further comprises: If so, the first test optical switch is driven to conduct the next first test channel.

6. The method for manufacturing and calibrating an array optical switch according to claim 3, characterized in that: After the step of determining whether the reading meets the conduction standard corresponding to the current calibration data of the second optical switch device, the method further comprises: If not, the second optical switch device is driven to switch the next calibration data, so that the second optical switch device is turned on the next second channel.

7. The method for manufacturing and calibrating an array optical switch according to claim 6, characterized in that: The step of making the current second optical switch device conduct the next second channel comprises: Determine whether the second output channel currently turned on is the last channel of the second optical switch device that was previously turned on; If so, the second test optical switch is driven to turn on the next second test channel; if not, the second optical switch device currently turned on is driven to switch to turn on the next second output channel.

8. The method for manufacturing and calibrating an array optical switch according to any one of claims 1 to 7, characterized in that: After the step of calibrating the target array optical switch according to the measurement result of the optical power meter and the calibration data, the method further comprises: A full-function performance test is performed on the target array optical switch according to the calibration result.

9. A calibration device for an array switch, characterized in that: The calibration device of the array switch comprises: A 1×X-channel first test optical switch, wherein the X first test channels are used for one-to-one connection with the N input single channels of the array optical switch; A 1×Y-channel second test optical switch, wherein the Y second channels are used to be connected to the M output single channels of the array optical switch in a one-to-one correspondence; wherein X≥N, Y≥M; a light source connected to the input channel of the first test optical switch and used for providing calibration and test optical signals; an optical power meter connected to a single output channel of the second test optical switch and used to obtain an output of the second test optical switch; A calibration operation controller is connected to each component of the calibration device and is used to implement the method described in any one of claims 1-8.

10. An array optical switch, characterized in that: The array switch is manufactured and calibrated by the method described in any one of claims 1-8.

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