A method and apparatus for non-interfering point selection for optical channels

Abstract

The application provides a non-interference point selection method and device for optical channels. The method comprises the following steps: mapping the optical channels on a voltage distribution coordinate system, representing the positions of the optical channels and their interference areas by the power supply voltage of a chip, setting grid points on the coordinate system, taking any two optical channels as a connection group, connecting the connection group with all the grid points, obtaining the grid point with the least number of connection groups passing through the interference area as a preferred grid point, taking the preferred grid point and the corresponding connection group as a preferred optical path, and obtaining a preferred optical path set with the least number of cut-off optical channels through iteration, wherein the preferred optical path set is the final optical path.

Description

TECHNICAL FIELD

[0001] The application relates to the optical waveguide coupling field, and particularly relates to a hitless point selection method and device for an optical channel. BACKGROUND

[0002] As key devices in optical add-drop multiplexer (OADM) equipment, optical cross-connect (OXC) equipment and optical routing equipment, optical switches and optical switch arrays have the functions of controlling signals to be on or off in the same channel or different channels and wavelength conversion, and have important significance for solving wavelength contention in a complex network, improving wavelength reuse rate and flexibly configuring a network.

[0003] As a new type of optical switch in the optical switch series, a two-dimensional micro-electro-mechanical system optical switch (MEMS OSW) has the characteristics of small volume, low cost, low power consumption, high speed and low loss, and therefore, the demand for the two-dimensional micro-electro-mechanical system optical switch is increasing in optical communication networks.

[0004] Hitless point selection is a key link for signal on-off and channel switching control of the MEMS OSW optical switch. How to select the hitless point in a high-efficiency and accurate manner in the batch production process is particularly important. At present, the hitless point selection method for the mainstream 1*N (N>16) optical switch has a huge amount of calculation, and the efficiency and the qualification rate are relatively low, and therefore, it is necessary to efficiently select the hitless point and plan a moving path of an optical signal landing point.

[0005] Therefore, overcoming the defects of the prior art is an urgent problem to be solved in the technical field. SUMMARY

[0006] The application aims to solve the technical problem of how to efficiently select a hitless point and plan a moving path of an optical signal landing point.

[0007] The application adopts the following technical scheme:

[0008] In a first aspect, a hitless point selection method for an optical channel is provided, comprising:

[0009] obtaining a coefficient relationship between a chip corner and a chip voltage;

[0010] obtaining positions of all optical channels, mapping the positions of the optical channels to a voltage distribution coordinate system according to the coefficient relationship, and determining a disturbance area around each optical channel according to the coefficient relationship.

[0011] setting a grid network in the voltage distribution coordinate system, connecting each grid point in the grid network with each optical channel, each two optical channels being a connection group, each connection group being connected through two connection lines and a grid point, obtaining a grid point with least connection line passing through the interference region in each connection group, taking the grid point, the connection group corresponding to the grid point and the connection line therebetween as the preferred optical path;

[0012] when the preferred optical path is selected, cutting off the optical channel corresponding to the interference region through which the preferred optical path passes, and obtaining a preferred optical path set with least number of cut-off optical channels through iteration, the preferred optical path set being the final optical path.

[0013] Preferably, the position of each optical channel is obtained by mapping the position of the optical channel to the voltage distribution coordinate system according to the coefficient relationship, and specifically comprising:

[0014] According to the position of the optical channel, the deflection angle of the chip corresponding to each optical channel needs to be performed in two dimensions is obtained, the rotation voltage required for the chip to rotate corresponding to the deflection angle is obtained according to the coefficient relationship, and the rotation voltages of the two dimensions are respectively mapped on the voltage distribution coordinate system to obtain the position of the optical channel on the voltage distribution coordinate system.

[0015] Preferably, the interference region around each optical channel is determined according to the coefficient relationship, and specifically comprising:

[0016] The positions of the interference regions around all the optical channels are obtained, the deflection angle of the chip corresponding to each interference region needs to be performed in two dimensions is obtained, the rotation voltage required for the chip to rotate corresponding to the deflection angle is obtained according to the coefficient relationship, the rotation voltages of the two dimensions are respectively mapped on the voltage distribution coordinate system to obtain the relationship equation of the interference region and the optical channel corresponding thereto, so as to obtain the position of the interference region around each optical channel on the voltage distribution coordinate system.

[0017] Preferably, the relationship equation of the interference region and the optical channel corresponding thereto is:

[0018]

[0019] wherein, Dac x is the voltage value of the interference region mapped on the x-axis, Dac y is the voltage value of the interference region mapped on the y-axis, Dac chi_x is the voltage value of the optical channel corresponding to the interference region on the x-axis, Dac chi_y is the voltage value of the optical channel corresponding to the interference region on the y-axis, Dac r_xDac is the voltage distance between the interference area and the same light channel on the x-axis. r_y Dac is the voltage distance between the interference area and the same light channel on the y-axis.

[0020] Preferably, the grid network is arranged in the voltage distribution coordinate system, and all grid points in the grid network are connected to the respective light channels.

[0021] The X-axis and the Y-axis of the voltage distribution coordinate system are divided by straight lines according to preset voltage value intervals, and the intersection between the straight line for dividing the X-axis and the straight line for dividing the Y-axis is the grid point.

[0022] Preferably, the grid point with the least interference area through the connection line in each connection group is obtained, and the grid point, the connection group corresponding to the grid point, and the connection line therebetween are taken as the preferred optical path, and the preferred optical path specifically includes:

[0023] The crossing relationship of the connection line of all grid points to an arbitrary light channel Ch i with the interference area corresponding to other light channels is obtained.

[0024] The crossing relationship of the connection line of all grid points to another arbitrary light channel Ch j with the interference area corresponding to other light channels is obtained.

[0025] The intersection of the crossing relationship of an arbitrary grid point to the light channel Ch i and the light channel Ch j is obtained, and the crossing relationship of the connection group of the arbitrary grid point to the light channel Ch i and the light channel Ch j is obtained.

[0026] The crossing relationship of the connection group of all grid points to the light channel Ch i and the light channel Ch j is searched, and the grid point with the least interference area is found as the preferred grid point.

[0027] The preferred grid point, the light channel Ch i , the light channel Ch j , and the connection line therebetween are taken as the preferred optical path of the connection group of the light channel Ch i and the light channel Ch j .

[0028] Preferably, when the preferred optical path is selected, the light channel corresponding to the interference area through which the preferred optical path passes is cut off, and the preferred optical path specifically includes:

[0029] When the preferred light path is selected from the preferred light path set, the light channel corresponding to the interference region through which the preferred light path passes is cut off, and all the preferred light paths corresponding to the cut-off light channel are invalidated.

[0030] Preferably, the preferred light path set with the least number of cut-off light channels is obtained through iteration, and specifically includes the following steps:

[0031] A preset number of iterations is set.

[0032] The single iteration includes the following steps: all the preferred light paths are sequentially selected according to the number of interference regions they pass through from small to large, if the number of interference regions passed through by different preferred light paths is consistent, then the different preferred light paths are selected in different orders in different rounds of iteration, the light channel corresponding to the interference region through which the selected preferred light path passes is cut off, and all the preferred light paths corresponding to the cut-off light channel are invalidated, until all the preferred light paths are selected or invalidated, and all the selected preferred light paths are taken as the preferred light path set.

[0033] When the preset number of iterations is completed, the number of cut-off light channels in each iteration is compared, and the preferred light path set of the iteration round with the least number of cut-off light channels is selected as the final light path.

[0034] Preferably, the number of light channels in the final light path is compared with a preset number.

[0035] When the number of light channels in the final light path is greater than or equal to the preset number, it means that it is qualified.

[0036] When the number of light channels in the final light path is less than the preset number, it means that it is unqualified.

[0037] In a second aspect, a non-interference point selection device for light channels includes at least one processor and a memory in communication connection with the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the processor to execute the non-interference point selection method for light channels.

[0038] The embodiment of the present application provides a non-interference point selection method and device for optical channels, which maps the optical channels on a voltage distribution coordinate system, represents the positions of the optical channels and their interference areas by the power supply voltage of a chip, sets grid points on the coordinate system, takes any two optical channels as a connection group, connects the connection group with all the grid points, obtains the grid point with the least interference area through which all the connection groups pass as an optimal grid point, and takes the optimal grid point and the corresponding connection group as an optimal optical path, iteratively obtains an optimal optical path set with the least number of cut-off optical channels, and the optimal optical path set is the final optical path. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0040] Figure 1 It is a method flow chart of a non-interference point selection method for optical channels provided by the embodiment of the present application;

[0041] Figure 2 It is a chip rotation angle and power supply voltage relationship diagram of a non-interference point selection method for optical channels provided by the embodiment of the present application;

[0042] Figure 3 It is a voltage distribution coordinate system diagram of a non-interference point selection method for optical channels provided by the embodiment of the present application;

[0043] Figure 4 It is a voltage distribution coordinate system diagram of a non-interference point selection method for optical channels provided by the embodiment of the present application, and a preferred optical path is included;

[0044] Figure 5 It is a voltage distribution coordinate system diagram of a non-interference point selection method for optical channels provided by the embodiment of the present application, and a preferred optical path is included;

[0045] Figure 6 It is a device schematic diagram of a non-interference point selection device for optical channels provided by the embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0047] In the description of the present application, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and do not require the present application to be constructed and operated in a particular orientation, and therefore should not be understood as a limitation on the present application.

[0048] In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as there is no conflict.

[0049] Embodiment 1:

[0050] Embodiment 1 of the present application provides a non-interference point selection method for an optical channel, as shown in Figure 1 The method flow includes:

[0051] In step 101, the coefficient relationship between the chip corner and the chip voltage is obtained.

[0052] In step 102, the positions of all optical channels are obtained, and the positions of the optical channels are mapped to the voltage distribution coordinate system according to the coefficient relationship.

[0053] In step 103, the interference area around each optical channel is determined according to the coefficient relationship.

[0054] The implementation scenario of the present embodiment is that the optical signal is emitted from an optical exit port towards a chip, the chip is used to reflect the optical signal and reflect the optical signal to an optical channel, and the optical signal is received by the optical channel. A plurality of optical channels are provided in the optical module, and the plurality of optical channels are located on the same plane. In order to emit the optical signal into different optical channels, it is necessary to adjust the deflection angle of the chip according to the position of the optical channel, so as to reflect the optical signal into the specified optical channel. And it is also necessary to convert the optical signal from one optical channel to another optical channel, by adjusting the deflection angle of the chip, the optical signal landing point on the plane where the optical channel is located is displaced until the optical signal landing point is transferred to the specified optical channel. In the process of adjusting the optical signal landing point, it is necessary to ensure that the optical signal landing point does not pass through other optical channels to avoid being received by other optical channels.

[0055] Wherein, when the chip deflects, the power supply needs to provide voltage for the chip to deflect, as shown in Figure 1 The coefficient relationship between the chip corner and the chip voltage is the relationship curve of the power supply voltage required for the chip to deflect at different angles, Figure 2 In the figure, the X-axis is the voltage, and the Y-axis is the deflection angle of the chip.

[0056] Since the positions of the light emission port and all optical channels are fixed, the chip can be rotated to a fixed angle to transmit light signals into the optical channels. The rotation angle of the chip can be converted into a corresponding functional voltage and mapped onto a coordinate system. In this embodiment, the chip can rotate in two dimensions, such as... Figure 3 As shown, the power supply voltage required for rotation in two dimensions is used as the X-axis and Y-axis of the coordinate system, respectively. The power supply voltage required for each optical channel according to its corresponding chip deflection angle is mapped to the coordinate system. At the same time, the cross-sectional area of ​​each optical channel is mapped to the coordinate system as the interference area. When the optical channel is not used as the optical signal receiving end, its corresponding interference area cannot be traversed by the path of the optical signal landing point.

[0057] In step 104, a grid network is set in the voltage distribution coordinate system, and all grid points in the grid network are connected to each optical channel. Every two optical channels form a connection group, and each connection group is connected by two lines and one grid point.

[0058] In step 105, the grid point with the fewest interference areas through the connection in each connection group is obtained, and the grid point, the connection group corresponding to the grid point, and the connection between the grid point and the connection group are taken as the preferred optical path.

[0059] like Figure 4 As shown, the grid network is: the X-axis and Y-axis of the voltage distribution coordinate system are divided by straight lines at preset voltage value intervals, and the intersection point between the straight line used to divide the X-axis and the straight line used to divide the Y-axis is the grid point.

[0060] like Figure 4 As shown, when the optical channel in the lower left corner and the optical channel in the lower middle position are connected in one group, Figure 4 The grid point in the optical path is the preferred optical path if the connection between the two optical channels does not pass through any other optical channel, and the grid point, the connection group, and the connection between them are the preferred optical paths.

[0061] The preset voltage value is set by those skilled in the art based on actual conditions.

[0062] In view of the difficulty of the chip to rotate too accurately, so that the light signal landing point moves accurately to bypass all interference areas, in this embodiment, when the light signal landing point is transferred between two different optical channels, the light path of the light signal landing point only makes a turn, and other positions make linear motion, and the grid point is the turning point. In this process, it is necessary to avoid the light path passing through the interference area of other optical channels as much as possible. Therefore, any two optical channels are set as a connection group, and the two optical channels of each connection group are connected with any one grid point. The connection of each connection group with all grid points is obtained, and the grid point with the least number of interference areas through the connection line is found as the preferred grid point of the connection group. The preferred grid point and the corresponding connection group and the connection line therebetween are the preferred light path.

[0063] When the preferred light path is selected, the optical channels corresponding to the interference areas through which the preferred light path passes are cut off.

[0064] In step 106, the preferred light path set with the least number of cut-off optical channels is obtained by iteration, and the preferred light path set is the final light path.

[0065] Among all the obtained preferred light paths, there are some cases of mutual conflict between the preferred light paths, that is, some preferred light paths pass through a certain number of interference areas, and the optical channels corresponding to these interference areas also have their own preferred light paths. Therefore, some preferred light paths can be selected, while the conflicting preferred light paths cannot be selected. The cut-off optical channels will be cut off, and the preferred light paths corresponding to the cut-off optical channels will be invalidated. In order to ensure the number of enabled optical channels of the optical module, the fewer the number of cut-off optical channels, the better. Therefore, in this case, the preferred light path that passes through the least number of interference areas is selected first. If there are multiple preferred light paths that pass through the same number of interference areas, different preferred light paths are selected by iteration in turn, and the optical channels corresponding to the interference areas through which the selected preferred light path passes are cut off. After several rounds of selection, all the preferred light paths are selected or invalidated. The selected light path is the light path set. The number of cut-off optical channels of different light path sets in all iteration rounds is compared, and the light path set with the least number of cut-off optical channels is selected as the preferred light path set. If the number of optical channels that are not cut off in the preferred light path set is less than a preset number, it means that the optical module is unqualified. If the number of optical channels that are not cut off in the preferred light path set is greater than or equal to the preset number, it means that the optical module is qualified. At this time, the preferred light path set is the final light path. The preset number is set by the person skilled in the art.

[0066] The embodiment maps the light channels on the voltage distribution coordinate system, represents the positions of the light channels and their interference regions by the energizing voltage of the chip, sets grid points on the coordinate system, and regards any two light channels as a connection group, and connects the connection group with all the grid points to obtain a grid point with the least number of connection group lines passing through the interference region as a preferred grid point, and regards the preferred grid point and the corresponding connection group as a preferred light path, and iteratively obtains a preferred light path set with the least number of cut-off light channels, and the preferred light path set is the final light path.

[0067] Since the chip is energized by voltage to deflect the angle and thus reflect the optical signal to a specified position, the landing positions of the light channels can be mapped on the coordinate system by voltage, so that the positions of the light channels and the moving trend of the optical signal landing position are more intuitively represented, and thus the embodiment relates to the following design:

[0068] The positions of all the light channels are obtained, and the positions of the light channels are mapped on the voltage distribution coordinate system according to the coefficient relationship, and specifically comprising:

[0069] According to the positions of the light channels, the deflection angles of the chip corresponding to each light channel need to be obtained in two dimensions, the rotation voltage required for the chip to rotate corresponding to the deflection angle is obtained according to the coefficient relationship, and the rotation voltages in two dimensions are respectively mapped on the voltage distribution coordinate system to obtain the positions of the light channels on the voltage distribution coordinate system.

[0070] In the embodiment, all the light channels can be regarded as being located on the same plane, as shown in Figure 4 The energizing voltages required for rotation in two dimensions are respectively regarded as the X-axis and Y-axis of the coordinate system, and the energizing voltage required for each light channel according to the deflection angle of the corresponding chip is mapped into the coordinate system, and the multiple point positions in the figure are the positions of the light channels, and the left lower corner point in Figure 4 is taken as an example, the horizontal coordinate of the point is 13V and the vertical coordinate is 14V, that is, the chip is provided with 13V energizing voltage in one dimension for deflection and 14V energizing voltage in the other dimension for deflection, so that the optical signal can be reflected to the point.

[0071] Since each light channel itself has a certain cross-sectional area, which is mapped into the coordinate system as the interference region of the periphery of the position of the light channel, when the optical signal landing point moves through the periphery interference region of the non-target light channel, it may be received by the non-target light channel, resulting in optical signal receiving error, in order to avoid the above situation, the interference region needs to be mapped into the coordinate system to more intuitively see the boundary position of each light channel, and thus the embodiment relates to the following preferred design:

[0072] The coefficient relationship is used to determine the interference region around each light channel, and specifically includes:

[0073] The position of the interference region around each light channel is obtained, the deflection angle required by the acquisition chip for each interference region in two dimensions is obtained, the rotation voltage required by the chip for rotation corresponding to the deflection angle is obtained according to the coefficient relationship, the rotation voltages in two dimensions are respectively mapped on the voltage distribution coordinate system, the relationship equation of the interference region and the corresponding light channel is obtained, and thus the position of the interference region around each light channel in the voltage distribution coordinate system is obtained.

[0074] The relationship equation of the interference region and the corresponding light channel is:

[0075]

[0076] Dac x is the voltage value of the interference region mapped on the x-axis, Dac y is the voltage value of the interference region mapped on the y-axis, Dac chi_x is the voltage value of the light channel corresponding to the interference region on the x-axis, Dac chi_y is the voltage value of the light channel corresponding to the interference region on the y-axis, Dac r_x is the voltage distance between the interference region and the light channel on the x-axis, and Dac r_y is the voltage distance between the interference region and the light channel on the y-axis.

[0077] In this embodiment, since the cross-sectional area of the light channel is very small, and the cross-sectional diameter of the light channel is negligible compared to the distance between the light channel and the chip, the cross-sectional diameter of all light channels can be considered consistent. However, since different light channels are located at different positions, the chip needs to be adjusted at different angles to correspond to them, and as shown in FIG. 1, the growth rate of the energy supply voltage required by different deflection angles is also different. Therefore, although the cross-sectional area of each light channel is considered consistent, after being mapped to the coordinate system, the growth rate of the energy supply voltage required for chip deflection at different positions of each light channel is fast or slow. Therefore, the same deflection angle requires different energy supply voltages when fine-tuning around the interference region, and thus the interference region of most light channels is in an elliptical shape in the coordinate system. Figure 2 For example, the second light channel point from left to right in the lowermost row in FIG. 1 has a horizontal coordinate of 25V and a vertical coordinate of 12.5V. Figure 2 Figure 2 ​As can be seen from the corresponding curve, since the slope of the curve at 25V is greater than that at 12.5V, it means that the deflection efficiency of the chip is higher when powered by around 25V compared to when powered by 12.5V. Therefore, the interference area of ​​this optical channel is narrower on the X-axis and longer on the Y-axis, and is elliptical in shape overall.

[0078] Since there may be situations where the optical signal landing point needs to be transferred between any two optical channels, an optimal optical signal transfer path needs to be established between any two optical channels for subsequent filtering. Therefore, this embodiment also involves the following preferred design:

[0079] The step of obtaining the grid point with the least interference area in each connection group, and using that grid point, the corresponding connection group, and the connection between them as the preferred optical path, specifically includes:

[0080] Get all grid points to any optical channel Ch i The connection between the lines and the corresponding interference areas of other optical channels is obtained; the connection between all grid points and another arbitrary optical channel Ch is obtained. j The connection between the optical path and the interference area corresponding to other optical channels.

[0081] like Figure 5 The diagram shown is a schematic of the connection between one grid point and all optical channels.

[0082] In this embodiment, the optical channel Ch i Light Channel Ch j It can represent any optical channel; the crossing relationship refers to whether the line connecting the grid point and the optical channel point in the coordinate system passes through the interference area or is tangent to the interference area.

[0083] For any grid point P a To any channel point Ch i Does the connection between the lines cross the interference areas of other channels? Establish a relation vector.

[0084]

[0085] For any grid point P a To any channel point Ch j Does the connection between the lines cross the interference areas of other channels? Establish a relation vector.

[0086]

[0087] Where n is the total number of optical channels.

[0088] get the intersection of the crossing relationship of any grid point to the light channel Ch i and the light channel Ch j , and get the crossing relationship of any grid point to the connection group of the light channel Ch i and the light channel Ch j .

[0089] In this embodiment, the crossing relationship of any grid point P a to the connection group of the light channel Ch i and the light channel Ch j is

[0090] Search the crossing relationship of all grid points to the connection group of the light channel Ch i and the light channel Ch j , and find the grid point with the least interference area as the preferred grid point.

[0091] The connection line between the preferred grid point, the light channel Ch i , the light channel Ch j and the light channel Ch i is the preferred light path of the connection group of the light channel Ch j and the light channel Ch i .

[0092] Get the crossing relationship of all grid points to the connection group of the light channel Ch i and the light channel Ch j , determine the preferred grid point of the connection group of the light channel Ch i and the light channel Ch j , and select the index as the preferred grid point. The preferred grid point is selected as the preferred grid point, and the preferred grid point is selected as the preferred grid point. If there are multiple grid points that do not pass through the interference area, or there are multiple grid points that pass through the same number of interference areas, the grid point corresponding to the path with the farthest distance from other interference areas is selected as the preferred grid point.

[0093] After selecting all the preferred light paths, there may be light channel conflicts between the preferred light paths, such as one preferred light path passing through a light channel, and the light channel also having its corresponding preferred light path. Therefore, the two preferred light paths cannot be selected at the same time, and the light channel corresponding to the crossed interference area needs to be cut off. Therefore, it is necessary to select the preferred light paths that do not conflict with each other under the premise of ensuring that the cut-off light channel is as few as possible.

[0094] The preferred light path set with the least number of cut-off light channels is obtained by iteration, and specifically includes:

[0095] set a preset iteration number; the single iteration comprises: selecting all the preferred light paths in turn according to the number of interference regions in the order from small to large, if the number of interference regions of different preferred light paths is consistent, then selecting different preferred light paths in different orders in different iterations, cutting off the optical channel corresponding to the interference region crossed by the selected preferred light path, and invalidating all the preferred light paths corresponding to the cut-off optical channel, until all the preferred light paths are selected or invalidated, and taking all the selected preferred light paths as the preferred light path set.

[0096] The preset iteration number is set by a person skilled in the art.

[0097] In each iteration, all the preferred light paths passing through zero interference regions are selected first, and then all the remaining preferred light paths are selected in turn according to the number of interference regions in the order from small to large. In this process, two preferred light paths with the same number of interference regions may conflict with each other, in which case one of the preferred light paths is selected in two different iterations, and the other preferred light path is invalidated. The number of optical channels of the final light path is compared, and the iteration round with fewer optical channel cut-off numbers is selected. It is also possible that the subsequent preferred light path to be selected conflicts with the preferred light path that has been selected, in which case the subsequent preferred light path to be selected is invalidated.

[0098] After the preset iteration number is executed, the number of cut-off optical channels in each iteration is compared, and the preferred light path set of the iteration round with the least number of cut-off optical channels is selected as the final light path.

[0099] The number of optical channels of the final light path is compared with the preset number, if greater than or equal to the preset number, it represents that the optical module is qualified, if less than the preset number, it represents that the optical module is unqualified.

[0100] Embodiment 2:

[0101] As shown in Figure 6 Fig. 1 is a device schematic diagram of the interference point selection device for optical channels according to an embodiment of the present application. The interference point selection device for optical channels according to the embodiment comprises one or more processors 51 and a memory 52. Among them, Figure 6 The processor 51 is taken as an example in the embodiment.

[0102] The processor 51 and the memory 52 can be connected through a bus or other means, Figure 6 The connection through the bus is taken as an example in the embodiment.

[0103] The memory 52, as a non-volatile computer readable storage medium, can be used to store non-volatile software programs and non-volatile computer executable programs, such as the non-interference point selection method for optical channel in the above embodiments. The processor 51 executes the non-volatile software programs and instructions stored in the memory 52, thereby performing the non-interference point selection method for optical channel.

[0104] The memory 52 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state memory device. In some embodiments, the memory 52 can optionally include a memory remotely disposed relative to the processor 51, and these remote memories can be connected to the processor 51 through a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0105] The program instructions / modules are stored in the memory 52, and when executed by the one or more processors 51, perform the non-interference point selection method for optical channel in the above embodiments, such as performing the above-described Figures 1 to 5 each of the steps shown.

[0106] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for selecting interference-free points in an optical channel, characterized in that, include: Obtain the coefficient relationship between the chip rotation angle and the chip voltage; The positions of all optical channels are obtained, and the positions of the optical channels are mapped onto the voltage distribution coordinate system according to the coefficient relationship. The interference area around each optical channel is determined according to the coefficient relationship. Based on the position of the optical channel, the deflection angle that the chip needs to make in two dimensions for each optical channel is obtained. Based on the coefficient relationship, the rotation voltage required for the chip to rotate to the corresponding deflection angle is obtained. The positions of the interference areas around all the optical channels are obtained. Based on the deflection angle and the rotation voltage, the rotation voltage in the two dimensions is mapped onto the voltage distribution coordinate system respectively to obtain the relationship equation between the interference area and its corresponding optical channel, thereby obtaining the position of the interference area around each optical channel on the voltage distribution coordinate system. The equation relating the interference region to its corresponding optical channel is as follows: ; Among them, Dac x The voltage value of the interference region mapped onto the x-axis, Dac y The voltage value of the interference region mapped onto the y-axis, Dac chi_x The voltage value on the x-axis of the optical channel corresponding to the interference region, Dac chi_y The voltage value on the y-axis of the optical channel corresponding to the interference region, Dac r_x The voltage distance between the interference region and the same optical channel on the x-axis is represented by Dac. r_y The voltage distance between the interference region and the optical channel on the y-axis; A grid network is set up in the voltage distribution coordinate system, and all grid points in the grid network are connected to each optical channel. Every two optical channels form a connection group. Each connection group is connected by two lines and a grid point. The grid point with the least interference area in each connection group is obtained. The grid point, the connection group corresponding to the grid point, and the connection between the grid point and the connection group are used as the preferred optical path. When the preferred optical path is selected, the optical channel corresponding to the interference area traversed by the preferred optical path is cut off. The set of preferred optical paths with the fewest cut optical channels is obtained through iteration, and the set of preferred optical paths is the final optical path.

2. The method for selecting interference-free points in an optical channel according to claim 1, characterized in that, The step of obtaining the positions of all optical channels and mapping the positions of the optical channels to a voltage distribution coordinate system according to the coefficient relationship specifically includes: By mapping the rotational voltages of the two dimensions onto the voltage distribution coordinate system, the position of the optical channel on the voltage distribution coordinate system can be obtained.

3. The interference-free point selection method for optical channels according to claim 1, characterized in that, A grid network is set in the voltage distribution coordinate system, and all grid points in the grid network are connected to each optical channel. The X-axis and Y-axis of the voltage distribution coordinate system are divided by straight lines at preset voltage value intervals. The intersection of the straight lines used to divide the X-axis and the straight lines used to divide the Y-axis is the grid point.

4. The method for selecting interference-free points in an optical channel according to claim 1, characterized in that, The step of obtaining the grid point with the least interference area in each connection group, and using that grid point, the corresponding connection group, and the connection between them as the preferred optical path, specifically includes: Get all grid points to any optical channel Ch i The connection between the optical path and the interference area corresponding to other optical channels; Get all grid points to another arbitrary optical channel Ch j The connection between the optical path and the interference area corresponding to other optical channels; Get any grid point to optical channel Ch i Light Channel Ch j The intersection of the traversal relationships yields the intersection of any grid point and the light channel Ch. i Light Channel Ch j The traversal relationship of the connection group; Search all grid points and light channels Ch i Light Channel Ch j Based on the traversal relationship of the connection group, the grid point that passes through the least interference area is selected as the preferred grid point; The preferred grid points and optical channels Ch i Optical Channel Ch j The line connecting the two points is used as the optical channel Ch. i Light Channel Ch j The preferred optical path for the connection group.

5. The method for selecting interference-free points in an optical channel according to claim 1, characterized in that, When a preferred optical path is selected, the optical channel corresponding to the interference area traversed by the preferred optical path is cut off, specifically including: When the preferred optical path is selected into the set of preferred optical paths, the optical channel corresponding to the interference area traversed by the preferred optical path is cut off, and all preferred optical paths corresponding to the cut-off optical channel are invalidated.

6. The method for selecting interference-free points in an optical channel according to claim 1, characterized in that, The process of iteratively obtaining the optimal set of optical paths with the fewest cut optical channels specifically includes: Set the preset number of iterations; Each iteration includes: selecting all preferred optical paths in ascending order of the number of interference regions traversed; if different preferred optical paths traverse the same number of interference regions, then different preferred optical paths are selected in different orders in different iterations; the optical channels corresponding to the interference regions traversed by the selected preferred optical paths are cut off, and all preferred optical paths corresponding to the cut-off optical channels are invalidated, until all preferred optical paths are selected or invalidated, and all selected preferred optical paths are used as the set of preferred optical paths; After the preset number of iterations is completed, the number of optical channels cut off in each iteration is compared, and the set of preferred optical paths from the iteration with the fewest cut optical channels is selected as the final optical path.

7. The method for selecting interference-free points in an optical channel according to claim 6, characterized in that, The method for selecting interference-free points also includes: Compare the number of optical channels in the final optical path with the preset number; When the number of optical channels in the final optical path is greater than or equal to the preset number, it is considered qualified; If the number of optical channels in the final optical path is less than the preset number, it is considered unqualified.

8. A non-interference point selection device for an optical channel, characterized in that, The method includes at least one processor and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor for performing the interference-free point selection method for an optical channel according to any one of claims 1-7.

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