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

Abstract

The application relates to the technical field of optical communication, in particular to an array optical switch, a manufacturing and calibration method thereof, and a calibration device. The method comprises the following steps: obtaining a second optical switch device corresponding to a first optical switch device, selecting a first channel from the first optical switch device in sequence, randomly selecting a second channel from the corresponding second optical switch device, and fusing the two channels to obtain a target array optical switch; connecting a first test channel of a first test optical switch with a first single channel of the first optical switch device, and connecting a second test channel of a second test optical switch with a second single channel of the second optical switch device; connecting a light source with a first test single channel of the first test optical switch, and connecting a light power meter with a second test single channel of the second test optical switch; 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 light power meter. The application can improve the production efficiency and reduce the production cost.

Description

TECHNICAL FIELD

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

[0002] An array optical switch is usually manufactured by fusing each output port of at least two optical switch devices with a plurality of input ports. Each optical switch device and its respective channel ports are numbered and sequenced, and a multi-device cascade relationship table is prepared.

[0003] As the number of channels increases, the number of fiber fusions also increases exponentially. SUMMARY

[0004] The technical problem to be solved by the embodiments of the present application is to provide an array optical switch, a manufacturing and calibration method thereof, to solve the problem of high requirements on operators and complex and time-consuming product production processes in the prior art.

[0005] The present application discloses a manufacturing and calibration method of an array optical switch, comprising:

[0006] The first optical switch device of N 1×M channels and the second optical switch device of M 1×N channels to be fused are labeled according to a preset rule, wherein N and M are integers greater than 1;

[0007] For each first optical switch device, its corresponding second optical switch device is obtained, a first channel that has not been fused is selected in sequence from the first optical switch device, a second channel that has not been fused is randomly selected from the corresponding second optical switch device, and the first channel is fused with the second channel to obtain a target array optical switch;

[0008] N first test channels of a first test optical switch of 1×X channels are respectively connected one by one with first single channels of N first optical switch devices, and M second test channels of a second test optical switch of 1×Y channels are respectively connected one by one with second single channels of M second optical switch devices, wherein X≥N and Y≥M;

[0009] An optical 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 with an optical power meter;

[0010] Obtaining incoming calibration data of each device of the target array optical switch, which can be referred to as candidate calibration data. Starting the light source, adjusting the on channels of the first test optical switch, the second test optical switch and the target array optical switch, judging and completing the calibration of each on channel of the target array optical switch 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, that is, finding the corresponding calibration value of each on channel.

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

[0012] Driving the first test optical switch to sequentially turn on each first test channel, so that the first optical switch device can be sequentially inputted with optical signals;

[0013] When a first test channel of the first test optical switch is turned on, driving the first optical switch device connected with 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 with each second optical switch device;

[0015] When a second test channel is turned on, driving each second output channel of the second optical switch device connected with the second test channel to be sequentially turned on.

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

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

[0018] When the reading meets the on standard corresponding to the calibration data, taking the currently turned-on second output channel as a calibration channel;

[0019] Obtaining a first identification of the first optical switch device connected with the currently turned-on first test channel and a second identification of the second optical switch device connected with the second test channel;

[0020] Calibrating the calibration channel according to the first identification and the second identification.

[0021] Optionally, after the step of calibrating according to the first identification and the second identification, comprising:

[0022] determining whether all second channels corresponding to the first optical switch device currently turned on are calibrated;

[0023] If not, driving the first optical switch device currently turned on to switch to the next first output channel to be turned on.

[0024] Optionally, after the step of determining whether the first optical switch device currently turned on is calibrated, the method comprises:

[0025] If yes, driving the first test optical switch to turn on the next first test channel.

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

[0027] If the reading does not meet the turn-on standard, driving the second optical switch device to retrieve candidate incoming calibration data of the second optical switch device again and switch to another candidate incoming calibration data. After each switch, it is necessary to determine whether the current reading meets the standard. If yes, it indicates 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 comprises:

[0029] According to the calibration result, performing a full-function performance test on the target array optical switch.

[0030] The application further discloses an array switch calibration device, which comprises:

[0031] a 1×X channel first test optical switch, X first test channels of which are used to be connected to N input single channels of the array optical switch one by one;

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

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

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

[0035] a calibration operation controller, which is connected to each component of the calibration device and is used to realize the method as described above.

[0036] The application further discloses an array optical switch, which is made 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 embodiments of the present application have the beneficial effects that for each first optical switch device, a corresponding second optical switch device is obtained, a first channel that has not been fused is selected from the first optical switch device in sequence, a second channel that has not been fused is randomly selected from the corresponding second optical switch device and fused with the first channel, the optical fiber fusion process is simplified, the complex step of needing to accurately match the order of optical fibers in the traditional fusion method is avoided, the operation efficiency is improved, the automatic calibration and testing method is further adopted, the rapid and accurate calibration and testing of each channel are realized, the influence of human factors on the calibration result is reduced, the consistency and reliability of product calibration are improved, the product yield is effectively improved, and thus the production efficiency is improved and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

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

[0039] Figure 1 is a flowchart of an embodiment of the manufacturing and calibration method of the array optical switch provided by the present application;

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

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

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

[0043] In the drawings, various reference signs are as follows:

[0044] 10, array optical switch; 11, first optical switch device; 111, first channel; 112, input single channel; 12, second optical switch device; 121, second channel; 122, output single 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 the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The preferred embodiments of the present application will be described in detail with reference to the accompanying drawings.

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

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

[0048] As shown in Figure 3 , the calibration device 20 is used for calibrating Figure 2 the array optical switch 10, and comprises a first test optical switch 21 of 1×X channels, a second test optical switch 22 of 1×Y channels, a light source 23, a light power meter 24, and a calibration operation controller 25. Wherein X≥N, Y≥M. The X first test channels 211 of the first test optical switch 21 are used for being connected one by one with the N input single channels 112 of the array optical switch, and the Y second channels 221 of the second test optical switch 22 are used for being connected one by one with the M output single channels 122 of the array optical switch.

[0049] Specifically, as shown in Figure 4 , the connection is performed, and Figure 4 in which X=N, Y=M, the first test channels 211 and the input single channels 112 are connected one by one. In other implementation scenarios, in the case of X>N, Y>M, the N first test channels 211 and the input single channels 112 are connected one by one, and the remaining first test channels 211 are left unused. The M second test channels 221 and the output single channels 122 are connected one by one, and the remaining second test channels 221 are left unused.

[0050] The light source 13 is connected with the single input channel 212 of the first test optical switch 21, and is used for providing a calibration and test light signal. The light power meter 24 is connected with the single output channel 222 of the second test optical switch 22, and is used for acquiring the intensity of the output light signal of the second test optical switch 22.

[0051] The calibration operation controller 25 is connected with the 1xX channel first test optical switch 21, the 1xY channel second test optical switch 22, 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 1xX channel first test optical switch 21, the 1xY channel second test optical switch 22 and the array switch 10 to sequentially turn on respective channels according to a preset rule to combine a plurality of optical transmission paths, and the optical power meter 24 is used to judge whether the current optical transmission path is turned on or not according to a reading of the optical power meter 24, if the optical power reading of the optical power meter 24 meets a preset threshold, it is determined that the current optical transmission path is turned on, if the optical power reading of the optical power meter 24 is low and does not meet the preset threshold, it is indicated that the current optical transmission path is not turned on, and the next optical transmission path is switched to be detected.

[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 the calibration value found by calibration is finely adjusted to make the optical power reading reach the best effect, at this time, the calibration value can replace the previously found calibration value as the final calibration value and be written into the product memory for user use.

[0053] The array optical switch manufacturing and calibration method provided by the application comprises the following steps:

[0054] S101: Labeling the N 1xM channel first optical switch devices and the M 1xN channel second optical switch devices to be fused according to a preset rule, wherein N and M are both integers greater than 1.

[0055] In a specific implementation scenario, the NxM array optical switch device shown in the figure is constructed by fusing the N 1xM channel first optical switch devices and the M 1xN channel second optical switch devices. Figure 2 In order to facilitate subsequent fusing of optical channels and calibration after fusing, the first optical switch devices and the second optical switch devices are labeled according to a preset rule. For example, the first optical switch devices can be sequentially labeled as 01, 02, 03, …, and the second optical switch devices can be sequentially labeled as S01, S02, S03, …

[0056] In other implementation scenarios, the channels of the optical switch devices can also be labeled. If there are three 1x4 channel first optical switch devices, the channels can be labeled as follows: the first channel is labeled as A1, A2, A3, A4, the second channel is labeled as B1, B2, B3, B4, and the third channel is labeled as C1, C2, C3, C4.

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

[0058] In a specific implementation scenario, the operation of fusing with the second optical switch device is performed on each first optical switch device in order of the label. The M first channels of the current first optical switch device are respectively fused with any one of the second channels of each optical switch device in the corresponding at least one second optical switch device in order. This is repeated until all first channels have been fused with second channels, and the target array optical switch is formed by the first optical switch device and the second optical switch device. The target array optical switch is an N×M array optical switch.

[0059] For example, the 3 first channels of the 1×3 first optical switch device 01 need to be connected with the second channels of the 3 1×2 second optical switch devices S01, S02 and S03 respectively, then any one of the second channels that have not been fused from the second optical switch device S01 is selected, any one of the second channels that have not been fused from the second optical switch device S02 is selected, and any one of the second channels that have not been fused from the second optical switch device S03 is selected, and the 3 first channels of the first optical switch device 01 are fused respectively, for example, the 3 first channels of the first optical switch device 01 are labeled as a, b and c, 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 one of the second channels of the second optical switch device S01, the first channel b can correspond to any one of the second channels of the second optical switch device S02, and the third channel c can correspond to any one of the second channels of the second optical switch device S03, as long as 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 fusion are greatly reduced, and workers do not need to find the specified optical fiber according to the device cascade relationship table to perform fusion, but only need to ensure that each first channel of the first optical switch device is sequentially connected to the one-to-one corresponding second optical switch device, and the work efficiency can be improved. However, the target array optical switch fused in this way does not know the connection relationship between the first channel and the second channel, and needs to be calibrated.

[0061] In other implementation scenarios, the label correspondence relationship can be obtained, and the label correspondence relationship is used to specify the connection relationship between the first optical switch device and the second optical switch device, for example, 01-01, 01-S02, 01-S03, indicating that the 01 first optical switch device needs to be connected with the three second optical switch devices S01, S02, and S03, or S02-01, S02-02, representing that the S02 optical switch device needs to be connected with the two first optical switch devices 01 and 02.

[0062] The label correspondence relationship 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 fused, each second optical switch device corresponding to the current first optical switch device is obtained, and an optical channel that has not been fused is selected from the first optical switch device and the specified second optical switch device having the correspondence relationship.

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

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

[0065] S104: An optical 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 with an optical power meter.

[0066] In a specific implementation scenario, please continue to refer to Figure 4 An optical 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 with an optical power meter. When the optical 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 with a first optical switch device, the first optical switch device is connected with a second optical switch device, and the single channel output of the second optical switch device is connected with the second test channel of the second test optical switch. Then the optical signal will finally be transmitted to the optical power meter, received by the optical power meter, and finally acquired by the calibration operation controller.

[0067] S105: Obtain the 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 on 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 on channels, and a preset threshold value in the calibration operation controller is obtained, which can help the target array optical switch quickly find the correct channel calibration data and avoid long calibration process or downtime.

[0069] After starting the light source, the first test optical switch receives the test light 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 on channels according to the preset rule, and monitors the measurement result of the optical power at the same time. The target array optical switch is calibrated according to the measurement result.

[0070] Specifically, the N first test channels of the first test optical switch connected with the first optical switch devices are in turn in the on state, so that the test light signal received by the first test optical switch can be sequentially transmitted to each first optical switch device. When a first test channel is in the on state, the M first channels of the first optical switch device connected with the first test channel are in turn in the on state.

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

[0072] In an embodiment, the calibration channel is (y-x), and the corresponding calibration value is (y-N, Sx-y), where y in y-N represents the label of the first optical switch device in the NxM array optical switch, N is the serial number of the flow channel during calibration, where Sx in Sx-y is the label of the second optical switch device in the NxM array optical switch, and y is the label of the first optical switch device in the array optical switch.

[0073] Specifically, the M second test optical switches can be driven to be in turn in the on state with the second test channels of the second optical switch device, and when one second test channel is in the on state, the N second channels of the second optical switch device connected with the second test channel can be driven to be in turn in the on state.

[0074] In other implementation scenarios, when one first channel is in the on state and one 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 meets the preset threshold, it is indicated that the second channel is in communication with 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 in communication with the first channel has been found, the N calibration data of the current second optical switch device are no longer driven to perform the trial detection.

[0075] It is judged whether the first channel is the last first channel of the first optical switch device where the first channel is located, and if not, it is indicated that the corresponding second channel of the first optical switch device has not been calibrated completely, and the next first channel of the first optical switch device is driven to be in the on state. The second test optical switch is driven to drive the second test channels to be in turn in the on state from the first second test channel, and when each second test channel is in the on state, the second channels of the second optical switch device connected with the second test channel in the on state are driven to be in turn in the on state, and the reading of the optical power meter is monitored to calibrate the next first channel to the second channel.

[0076] If yes, it is indicated that the corresponding second channel of the first optical switch device has been calibrated completely, and the next first optical switch device needs to be calibrated, the next first test channel of the first test optical switch is driven to be in the on state, and each first channel of the first optical switch device connected with the next first test channel is driven to be in the on state in turn. When one first channel is in the on state, the second test optical switch is driven to drive the second test channels to be in turn in the on state from the first second test channel, and when each second test channel is in the on state, the second channels of the second optical switch device connected with the second test channel in the on state are driven to be in turn in the on state, 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 one first channel is in the on state and one 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 is indicated that the second channel is not in communication with 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 in the on state. The incoming calibration data of the second optical switch device is continuously switched until the optical power reading meets the preset threshold. At this time, it is indicated that the calibration value of the first channel to the second channel is found.

[0078] In the process of calling the incoming calibration data value of the second optical switch device, the calibration operation controller can automatically eliminate the incoming calibration data of the second optical switch device which has been matched successfully, so as to reduce the sample number of the candidate incoming calibration data, and improve the calibration efficiency. That is, the second optical switch device which has been calibrated or the second channel of the second optical switch device can be skipped. For example, the first second channel of a second optical switch device has been calibrated, and in the subsequent calibration process, the detection starts from the second second channel of the second optical switch device. For another example, all the second channels of the first second channel have been calibrated, and in the subsequent calibration process, all the second channels of the second optical switch device will not be detected.

[0079] In an embodiment, it is judged whether the currently turned-on second output channel is the last channel of the second optical switch device which is turned on in the front, if yes, the second test optical switch is driven to turn on the next second test channel, each second test channel is driven to be turned on in turn from the first second test channel, and the reading of the optical power meter is monitored to calibrate the first channel.

[0080] If no, the second test optical switch is driven to turn on 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 indicates that the second channel is not in communication with the first channel, and the above steps are repeated. If the reading of the optical power meter exceeds the preset threshold, it indicates that the second channel is in communication with the first channel, and the second channel is calibrated.

[0081] In an embodiment, please refer to Figure 4 , Figure 4 is a structural schematic diagram of an embodiment of the calibration scene of the array optical switch provided by the present application, Figure 4 The array optical switch in the figure is composed of two 1x3 first optical switch devices and three 1x2 second optical switch devices. The two first optical switch devices are labeled as 01 and 02 respectively, and the three second optical switch devices are labeled as S01, S02 and S03 respectively. A 1x2 first test optical switch and a 1x3 second test optical switch are prepared, the two first test channels (a, b) of the first test optical switch are connected to the first single channels (A, B) of the two first optical switch devices respectively, and the three second test channels (c, d, e) of the second test optical switch are connected to the second single channels (C, D, E) of the three second optical switch devices respectively.

[0082] In the calibration process, first drive the first test channel a of the first test optical switch to be on, then the optical signal can be transmitted to the first single channel A through the first test channel a, drive the first channel of the first optical switch device 01 to be on, drive the second test channel c of the second test optical switch to be 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 then be detected by the optical power meter. Drive the second optical switch device S01 to poll according to the incoming calibration data of S01, find the incoming calibration data that can make the first second channel be on, that is, obtain the on calibration data of the first optical switch device 01 and the second optical switch device S01.

[0083] If the value detected by the optical power does not meet the preset threshold, it means that the group of incoming calibration data used by the second optical switch device S01 is not correct, at this time, the second optical switch device S01 alternates another group of incoming calibration data of S01 incoming calibration data, until the value of the optical power meets the preset threshold.

[0084] If the value detected by the optical power meets the preset threshold, it means that the second channel and the first channel of the first optical switch device 01 are connected, and the second channel is calibrated as (1-1), and the corresponding calibration value is (01-1, S01-1), wherein 01 represents the first optical switch device with the label 01, 1 is the serial number of the flow channel, S01 represents the second optical switch device with the label S01, and 1 represents the first optical switch device with the label 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 on. Drive the second test channel d of the second test optical switch to be on, drive the first second channel of the second optical switch device S02 to be on, in the same way, drive the second optical switch device S02 to poll according to the incoming calibration data of S02, find the incoming calibration data that can make the second second channel be on, that is, obtain the on calibration data of the first optical switch device 01 and the second optical switch device S02.

[0086] When the value detected by the optical power meets the preset threshold, it means that the second channel and the second channel of the first optical switch device 01 are connected, and the second channel is calibrated as (1-2), and the corresponding calibration value is (01-2, S02-1), wherein 01 represents the first optical switch device with the label 01, 2 is the serial number of the flow channel, S02 represents the second optical switch device with the label S02, and 1 represents the first optical switch device with the label 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 is obtained, and the second channel is calibrated as (1-3), and the corresponding calibration value is (01-3, S03-1). At this point, the calibration of the second channels of the first optical switch device corresponding to several second optical switch devices is completed.

[0088] Next, the calibration of the second channels corresponding to the first optical switch device 02 is continued, and the calibration process is similar to the calibration process of the second channels corresponding to the first optical switch device 01, which will not be described here.

[0089] After completing the calibration 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 calling in actual application. Users can select specific channels to be used when using, read the calibration data of the specific channels, and control the corresponding first optical switch device and second optical switch device to be turned on according to the calibration data. In an implementation scenario, see Figure 4 , the user needs to turn on the A-E port of the target array optical switch, that is, the first optical switch device 01 and the second optical switch device S03 are turned on. After receiving the instruction, the target array optical switch triggers the first optical switch device 01 to switch to the third first channel, and triggers the second optical switch device S03 to switch to the first second channel, so as to achieve the requirement of the user's target array optical switch A-E port turn-on.

[0090] In an implementation scenario, after all channels of the target array optical switch are calibrated, the calibration data of the target array optical switch is essentially the sorting of the calibration data of the optical switch. The optical switch device is assembled into a specific target array optical switch product, and the calibration data of the optical switch may not be the best value, thereby causing the optical performance of the target array optical switch to be not in the best state. Therefore, we can use the calibration device described in Figure 3 to further optimize, that is, to control and drive 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, to turn on each optical path in the target array optical switch 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, and 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 is replaced by the original calibration value. Thus, the best calibration value of all channels of the target array optical switch is obtained.

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

[0092] As can be seen from the above description, in the present embodiment, for each first optical switch device, its corresponding second optical switch device is obtained, a first channel that has not been fused is selected in sequence from the first optical switch device, a second channel that has not been fused is randomly selected from the corresponding second optical switch device and fused with the first channel, and the target arrayed optical switch is obtained. The optical fiber fusion process is simplified, the complex step of needing to accurately match the order of optical fibers in the traditional fusion method is avoided, the operation efficiency is improved, the automatic calibration method is adopted, the fast and accurate calibration of each channel is realized, the calibration process is greatly shortened, the influence of human factors on the calibration results is reduced, the consistency and reliability of product calibration are improved, the product yield is effectively improved, and thus the production efficiency is improved and the cost is reduced.

[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 a computer program instructing related hardware. The program can be stored in a non-volatile computer readable storage medium, and when the program is executed, the processes of the above-mentioned embodiments of each method can be included. In the embodiments provided in the present application, any reference to memory, storage, database or other medium can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), 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), etc.

[0094] Any technical features in the above embodiments can be combined, and for the sake of brevity, not all possible combinations are described above, however, any combination of the technical features described above should be considered to be within the scope of the present disclosure.

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

Claims

1. A method of fabricating and calibrating an arrayed optical switch, comprising: The application comprises the following steps: ​ labeling N 1xM channel first optical switch devices and M 1xN channel second optical switch devices to be fused according to a preset rule, wherein N and M are integers greater than 1; for each first optical switch device, obtaining its corresponding second optical switch device, sequentially selecting a first channel from the first optical switch device that has not been fused, and randomly selecting a second channel from the corresponding second optical switch device that has not been fused to fuse with the first channel, and obtaining a target array optical switch; connecting N first test channels of a 1xX channel first test optical switch with first single channels of N first optical switch devices one by one, and connecting M second test channels of a 1xY channel second test optical switch with second single channels of M second optical switch devices one by one, wherein X≥N and Y≥M; setting a light source on the input side of a first test single channel of the first test optical switch, and connecting a second test single channel of the second test optical switch with a light power meter; obtaining calibration data of each first optical switch device and second optical switch device of the target array optical switch, starting the light source, adjusting the conduction channels of the first test optical switch, the second test optical switch and the target array optical switch, and determining and completing the calibration of each conduction channel of the target array optical switch according to the measurement results of the light power meter.

2. The method of claim 1, wherein, 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 sequentially inputted with an optical signal; when a first test channel of the first test optical switch is conducted, driving the first optical switch device connected with the first test channel to sequentially conduct each first output channel; when a first output channel is conducted, driving the second test optical switch to sequentially conduct each second test channel, so that the second test optical switch is sequentially connected with each second optical switch device; when a second test channel is conducted, driving each second output channel of the second optical switch device connected with the second test channel to be sequentially conducted.

3. The method of claim 2, wherein the arrayed optical switch is a 2x2 arrayed optical switch. The step of driving each second output channel of the second optical switch device connected with the second test channel to be sequentially conducted comprises: when a second output channel of a second optical switch device is conducted, obtaining a reading of the light power meter; determining whether the reading meets a conduction standard corresponding to the calibration data of the current second optical switch device; if yes, taking the currently conducted second output channel as a calibration channel, and calibrating according to the currently adopted calibration data; obtaining a first identifier of a first optical switch device connected with the currently conducted first test channel and a second identifier of a second optical switch device connected with the second test channel; calibrating the calibration channel according to the first identifier and the second identifier.

4. The method of claim 3, wherein the arrayed optical switch is a 2x2 arrayed optical switch. After the step of calibrating according to the first identifier and the second identifier, the method comprises the following steps: determining whether all second channels corresponding to the first optical switch device currently turned on are calibrated; if not, driving the first optical switch device currently turned on to switch to the next first output channel to be turned on.

5. The method of claim 4, wherein the arrayed optical switch is a 2 x 2 arrayed optical switch. after the step of determining whether the first optical switch device currently turned on is calibrated, comprising: if yes, driving the first test optical switch to turn on the next first test channel.

6. The method of claim 3, wherein the arrayed optical switch is a 2x2 arrayed optical switch. after the step of determining whether the reading meets the on standard corresponding to the calibration data of the second optical switch device, comprising: if not, driving the second optical switch device currently turned on to switch to the next calibration data so that the second optical switch device currently turned on turns on the next second channel.

7. The method of claim 6, wherein the arrayed optical switch is a 2x2 arrayed optical switch. the step of making the second optical switch device currently turned on turn on the next second channel, comprising: determining whether the second output channel currently turned on is the last channel of the second optical switch device previously turned on; if yes, driving the second test optical switch to turn on the next second test channel; if not, driving the second optical switch device currently turned on to switch to the next second output channel to be turned on.

8. The method of claim 1-7, wherein, after the step of calibrating the target array optical switch according to the measurement results of the optical power meter and the calibration data, comprising: performing full-functionality performance test on the target array optical switch according to the calibration results.

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

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