Phase control method and phased array laser terminal

Abstract

The invention discloses a phase control method and a phased array laser terminal. The method comprises the following steps: selecting N target phase shifters of which the current voltages are greater than a first voltage or smaller than a second voltage from M phase shifters; under the condition that the current voltage of the target phase shifter meets a preset condition, determining a voltage regulation mode based on the current voltages of the M phase shifters, the first voltage and the second voltage; adjusting the current voltage of the phase shifter to be within a preset voltage range based on the voltage adjusting mode and the adjusting voltage; under the condition that the current voltage of the target phase shifter does not meet the preset condition, the current voltage of the target phase shifter is adjusted to be within the preset voltage range based on the adjusting voltage; wherein the preset condition is that the current voltages of the N target phase shifters are all greater than the first voltage, or the current voltages of the N target phase shifters are all smaller than the second voltage, so that the phase consistency of the multiple paths of laser beams is met, and meanwhile, the fluctuation and reduction of the beam combining optical power are avoided.

Description

Technical Field

[0001] This invention relates to the field of optical phased array technology, and in particular to a phase control method and a phased array laser terminal. Background Technology

[0002] Phase control and synchronization of multiple laser beams are crucial in optical fields. Typically, the phase of the laser beam is altered by changing the applied voltage of a phase shifter, and phase consistency among multiple laser beams is achieved through iterative algorithms. However, during the phase control process using iterative algorithms, the randomness of the applied voltage changes to the phase shifter may cause the phase shift to reach its physical limit, resulting in communication link interruption.

[0003] In the prior art, when the phase shift of multiple phase shifters reaches the physical limit boundary, the applied voltage of multiple phase shifters is reset simultaneously to reset the multiple phase shifters to the center phase shift position. However, this will destroy the phase consistency of the multiple laser beams, which will lead to significant fluctuations and power reduction in the combined beam power. Summary of the Invention

[0004] This invention provides a phase control method and a phased array laser terminal to solve the problem in the prior art where the applied voltage of multiple phase shifters is reset simultaneously, which leads to the destruction of the phase consistency of multiple laser beams.

[0005] In a first aspect, embodiments of this application provide a phase control method, the method comprising:

[0006] Select N target phase shifters from M phase shifters whose current voltage is greater than a first voltage or less than a second voltage, where the first voltage is greater than the second voltage, M is a positive integer greater than or equal to N and greater than or equal to 2, and N is a positive integer greater than or equal to 1.

[0007] If the current voltage of the target phase shifter meets the preset conditions, a voltage adjustment method is determined based on the current voltages of the M phase shifters, the first voltage, and the second voltage; based on the voltage adjustment method and the adjustment voltage, the current voltage of the phase shifter is adjusted to a preset voltage range.

[0008] If the current voltage of the target phase shifter does not meet the preset condition, the current voltage of the target phase shifter is adjusted to the preset voltage range based on the adjustment voltage.

[0009] The preset condition is that the current voltage of all N target phase shifters is greater than the first voltage, or the current voltage of all N target phase shifters is less than the second voltage.

[0010] In one possible implementation, the preset condition is that the current voltages of all N target phase shifters are greater than the first voltage;

[0011] The step of determining the voltage adjustment method based on the current voltages of the M phase shifters, the first voltage, and the second voltage includes:

[0012] Determine whether the current voltage of the M phase shifters is greater than a third voltage, wherein the third voltage is the sum of a first difference and a preset fourth voltage, the first difference is the difference between the second voltage and the first voltage, and the fourth voltage is greater than the first voltage;

[0013] If the current voltages of all M phase shifters are greater than the third voltage, the voltage adjustment method is set to the first adjustment method; otherwise, the voltage adjustment method is set to the second adjustment method. The first adjustment method is to reduce the current voltages of the M phase shifters, and the second adjustment method is to reduce the current voltages of the N target phase shifters.

[0014] In one possible implementation, adjusting the current voltage of the phase shifter to a preset voltage range based on the voltage adjustment method and the adjustment voltage includes:

[0015] When the voltage adjustment method is the first adjustment method, the current voltage of the M phase shifters is reduced by the adjustment voltage, and the process returns to the step of determining whether the current voltage of the M phase shifters is greater than the third voltage, until the current voltage of the M phase shifters is within the preset voltage range;

[0016] When the voltage adjustment mode is the second adjustment mode, the current voltage of the N target phase shifters is reduced by the adjustment voltage until the current voltage of the N target phase shifters are all within the preset voltage range.

[0017] In one possible implementation, the preset condition is that the current voltages of all N target phase shifters are less than the second voltage;

[0018] The step of determining the voltage adjustment method based on the current voltages of the M phase shifters, the first voltage, and the second voltage includes:

[0019] Determine whether the current voltage of the M phase shifters is less than the fifth voltage, wherein the fifth voltage is the sum of the second difference and the preset sixth voltage, the second difference is the difference between the first voltage and the second voltage, and the sixth voltage is less than the second voltage;

[0020] If the current voltages of all M phase shifters are less than the fifth voltage, the voltage adjustment method is set to the third adjustment method; otherwise, the voltage adjustment method is set to the fourth adjustment method. The third adjustment method is to increase the current voltages of the M phase shifters, and the fourth adjustment method is to increase the current voltages of the N target phase shifters.

[0021] In one possible implementation, adjusting the current voltage of the phase shifter to a preset voltage range based on the voltage adjustment method and the adjustment voltage includes:

[0022] When the voltage adjustment method is the third adjustment method, the current voltage of the M phase shifters is increased by the adjustment voltage, and the process returns to the step of determining whether the current voltage of the M phase shifters is less than the fifth voltage, until the current voltage of the M phase shifters is within the preset voltage range;

[0023] When the voltage adjustment method is the fourth adjustment method, the current voltage of the N target phase shifters is increased by the adjustment voltage until the current voltage of the N target phase shifters are all within the preset voltage range.

[0024] In one possible implementation, adjusting the current voltage of the target phase shifter to the preset voltage range based on the adjustment voltage when the current voltage of the target phase shifter does not meet the preset condition includes:

[0025] For a first target phase shifter whose current voltage is greater than the first voltage, the adjustment voltage is reduced to decrease the current voltage of the first target phase shifter until the current voltage of the first target phase shifter is within the preset voltage range;

[0026] For a second target phase shifter whose current voltage is less than the second voltage, increase the adjustment voltage of the second target phase shifter until the current voltage of the second target phase shifter is within the preset voltage range.

[0027] Secondly, embodiments of this application provide a phased array laser terminal, including an optical module, an optical fiber beam splitter, M phase shifters, a controller, a beam sampler, and a space optical detector;

[0028] The optical module is used to emit laser light;

[0029] The fiber optic beam splitter is used to split the laser into multiple laser beams;

[0030] The phase shifter is used to adjust the phase of the laser beam based on the current voltage;

[0031] The controller is configured to select N target phase shifters from M phase shifters whose current voltage is greater than a first voltage or less than a second voltage, wherein the first voltage is greater than the second voltage, M is a positive integer greater than or equal to N and greater than or equal to 2, and N is a positive integer greater than or equal to 1; if the current voltage of the target phase shifter meets a preset condition, the controller determines a voltage adjustment method based on the current voltage of the M phase shifters, the first voltage, and the second voltage; and adjusts the current voltage of the phase shifter to a preset voltage range based on the voltage adjustment method and the adjustment voltage; if the current voltage of the target phase shifter does not meet the preset condition, the controller adjusts the current voltage of the target phase shifter to the preset voltage range based on the adjustment voltage; wherein the preset condition is that the current voltage of all N target phase shifters is greater than the first voltage, or the current voltage of all N target phase shifters is less than the second voltage.

[0032] The beam splitter is used to split the laser beam output by the phase shifter into two laser beams.

[0033] The space photodetector is used to determine the combined beam power.

[0034] In one possible implementation, the controller is specifically used for:

[0035] Determine whether the current voltage of the M phase shifters is greater than a third voltage, wherein the third voltage is the sum of a first difference and a preset fourth voltage, the first difference is the difference between the second voltage and the first voltage, and the fourth voltage is greater than the first voltage;

[0036] If the current voltages of all M phase shifters are greater than the third voltage, the voltage adjustment method is set to the first adjustment method; otherwise, the voltage adjustment method is set to the second adjustment method. The first adjustment method is to reduce the current voltages of the M phase shifters, and the second adjustment method is to reduce the current voltages of the N target phase shifters.

[0037] In one possible implementation, the controller is specifically used for:

[0038] When the voltage adjustment method is the first adjustment method, the current voltage of the M phase shifters is reduced by the adjustment voltage, and the process returns to the step of determining whether the current voltage of the M phase shifters is greater than the third voltage, until the current voltage of the M phase shifters is within the preset voltage range;

[0039] When the voltage adjustment mode is the second adjustment mode, the current voltage of the N target phase shifters is reduced by the adjustment voltage until the current voltage of the N target phase shifters are all within the preset voltage range.

[0040] In one possible implementation, the controller is specifically used for:

[0041] Determine whether the current voltage of the M phase shifters is less than the fifth voltage, wherein the fifth voltage is the sum of the second difference and the preset sixth voltage, the second difference is the difference between the first voltage and the second voltage, and the sixth voltage is less than the second voltage;

[0042] If the current voltages of all M phase shifters are less than the fifth voltage, the voltage adjustment method is set to the third adjustment method; otherwise, the voltage adjustment method is set to the fourth adjustment method. The third adjustment method is to increase the current voltages of the M phase shifters, and the fourth adjustment method is to increase the current voltages of the N target phase shifters.

[0043] In one possible implementation, the controller is specifically used for:

[0044] When the voltage adjustment method is the third adjustment method, the current voltage of the M phase shifters is increased by the adjustment voltage, and the process returns to the step of determining whether the current voltage of the M phase shifters is less than the fifth voltage, until the current voltage of the M phase shifters is within the preset voltage range;

[0045] When the voltage adjustment method is the fourth adjustment method, the current voltage of the N target phase shifters is increased by the adjustment voltage until the current voltage of the N target phase shifters are all within the preset voltage range.

[0046] In one possible implementation, the controller is specifically used for:

[0047] For a first target phase shifter whose current voltage is greater than the first voltage, the adjustment voltage is reduced to decrease the current voltage of the first target phase shifter until the current voltage of the first target phase shifter is within the preset voltage range;

[0048] For a second target phase shifter whose current voltage is less than the second voltage, increase the adjustment voltage of the second target phase shifter until the current voltage of the second target phase shifter is within the preset voltage range.

[0049] The beneficial effects of this invention are as follows:

[0050] This application provides a phase control method and a phased array laser terminal. The method includes: selecting N target phase shifters from M phase shifters whose current voltage is greater than a first voltage or less than a second voltage, wherein the first voltage is greater than the second voltage, M is a positive integer greater than or equal to N and greater than or equal to 2, and N is a positive integer greater than or equal to 1; determining a voltage adjustment method based on the current voltage of the M phase shifters, the first voltage, and the second voltage when the current voltage of the target phase shifters meets a preset condition; adjusting the current voltage of the phase shifters to a preset voltage range based on the voltage adjustment method and the adjustment voltage; and adjusting the current voltage of the target phase shifters to a preset voltage range when the current voltage of the target phase shifters does not meet the preset condition, adjusting the current voltage of the target phase shifters to a preset voltage range based on the adjustment voltage; wherein the preset condition is that the current voltage of all N target phase shifters is greater than the first voltage or the current voltage of all N target phase shifters is less than the second voltage. In other words, this application sets preset conditions. When the current voltage of the target phase shifter meets the preset conditions, the current voltage of the target phase shifter is adjusted to the preset voltage range. When the current voltage of the target phase shifter does not meet the preset conditions, the current voltage of the target phase shifter is adjusted to the preset voltage range. This ensures the phase consistency of multiple laser beams while avoiding fluctuations and decreases in the combined beam power. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a schematic diagram of an optical phased array.

[0053] Figure 2 A flowchart illustrating a phase control method provided in an embodiment of this application;

[0054] Figure 3 A flowchart of another phase control method provided in this application embodiment;

[0055] Figure 4(a) is a schematic diagram showing the relationship between beam combining power and time according to an embodiment of this application;

[0056] Figure 4(b) is a schematic diagram of the relationship between beam combining power and time provided by the prior art;

[0057] Figure 5 A flowchart illustrating another phase control method provided in this application embodiment;

[0058] Figure 6This is a complete flowchart of a phase control method provided in an embodiment of this application. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0060] It should be noted that the terms "comprising" and "having" and their variations used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0061] The terms "first" and "second" used in this document are for descriptive purposes only and should not be construed as implying relative importance or implicitly indicating the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0062] Furthermore, in the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.

[0063] The word “exemplary” as used below means “serving as an example, embodiment, or illustration.” Any embodiment illustrated as an “exemplary” need not be construed as superior to or better than other embodiments.

[0064] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0065] Figure 1 This application illustrates an application scenario for a risk operation testing method provided in an embodiment of this application. See [link to relevant documentation]. Figure 1The diagram shows a schematic of a phased array laser terminal, comprising: an optical module 101, an optical fiber beam splitter 102, M phase shifters 103, a controller 104, a beam sampler 105, and a space photodetector 106 connected in sequence. The M phase shifters 103 and the controller 104 constitute a control box. One end of the space photodetector 106 is electrically connected to the beam sampler, and the other end of the space photodetector 106 is connected to the control box. The control box includes multiple phase shifters. When there are M phase shifters: phase shifter 1031, phase shifter 1032... phase shifter 103m, it means there are M laser beams. The M phase shifters are pre-set to have the same physical parameters, such as the same half-wave voltage, range, and response speed.

[0066] Existing technologies achieve phase consistency of multiple laser beams through iterative algorithms, such as the Hill Climbing Algorithm (HCA), Simulated Annealing Algorithm (SAA), and Stochastic Parallel Gradient Descent (SPGD). However, during the process of controlling the laser beam phase using iterative algorithms, the randomness of the applied voltage changes to the phase shifter may cause the phase shift amount to reach the physical limit boundary, resulting in communication link interruption.

[0067] Furthermore, during the phase coherence locking process of multiple laser beams, when a phase shifter moves to the boundary, it needs to return to its center position. This is typically achieved by changing the applied voltage of the phase shifter, thereby altering the phase of the laser beam. Existing technology resets multiple phase shifters to their central phase-shifted positions by simultaneously resetting the applied voltages of multiple phase shifters. However, during the process of returning the laser beam to the center position under the control of the phase shifters, phase cancellation occurs with other laser beams, disrupting the phase coherence of the multiple laser beams. This leads to a decrease in the combined optical power and consequently, communication link instability.

[0068] Based on the above problems, embodiments of this application provide a phase control method, such as... Figure 2 The diagram shown is a flowchart of a phase control method provided in an embodiment of this application. The steps of the method are as follows:

[0069] S201. Select N target phase shifters from M phase shifters whose current voltage is greater than the first voltage or less than the second voltage, where the first voltage is greater than the second voltage, M is a positive integer greater than or equal to N and greater than or equal to 2, and N is a positive integer greater than or equal to 1.

[0070] Specifically, this application first determines the current voltage of M phase shifters, and then compares the current voltage of the M phase shifters with a preset first voltage and a second voltage, and determines the phase shifter whose current voltage is greater than the first voltage or less than the second voltage as the target phase shifter.

[0071] S202. If the current voltage of the target phase shifter meets the preset conditions, determine the voltage adjustment method based on the current voltage of M phase shifters, the first voltage, and the second voltage; adjust the current voltage of the phase shifter to the preset voltage range based on the voltage adjustment method and the adjustment voltage.

[0072] S203. If the current voltage of the target phase shifter does not meet the preset conditions, adjust the current voltage of the target phase shifter to the preset voltage range based on the adjustment voltage.

[0073] The preset condition is that the current voltage of all N target phase shifters is greater than the first voltage, or the current voltage of all N target phase shifters is less than the second voltage.

[0074] This application provides a phase control method, which includes: selecting N target phase shifters from M phase shifters whose current voltage is greater than a first voltage or less than a second voltage, wherein the first voltage is greater than the second voltage, M is a positive integer greater than or equal to N and greater than or equal to 2, and N is a positive integer greater than or equal to 1; determining a voltage adjustment mode based on the current voltage of the M phase shifters, the first voltage, and the second voltage when the current voltage of the target phase shifters meets a preset condition; adjusting the current voltage of the phase shifters to a preset voltage range based on the voltage adjustment mode and the adjustment voltage; and adjusting the current voltage of the target phase shifters to a preset voltage range when the current voltage of the target phase shifters does not meet the preset condition, adjusting the current voltage of the target phase shifters to a preset voltage range based on the adjustment voltage; wherein the preset condition is that the current voltage of all N target phase shifters is greater than the first voltage, or the current voltage of all N target phase shifters is less than the second voltage. In other words, this application sets preset conditions. When the current voltage of the target phase shifter meets the preset conditions, the current voltage of the target phase shifter is adjusted to the preset voltage range. When the current voltage of the target phase shifter does not meet the preset conditions, the current voltage of the target phase shifter is adjusted to the preset voltage range. This ensures the phase consistency of multiple laser beams while avoiding fluctuations and decreases in the combined beam power.

[0075] It should be noted that in existing iterative algorithms, the absolute value of the voltage change applied to the phase shifter each time is the perturbation voltage Vd. In this application, the voltage change applied to the phase shifter each time is set to the adjustment voltage Vstep, where Vstep > Vd. Furthermore, the SPGD algorithm applies the perturbation voltage Vd throughout the execution cycle of the M phase shifters.

[0076] In addition, this application pre-sets a first voltage Vup and a second voltage Vdown, takes the voltage value corresponding to the minimum physical limit phase shift of the phase shifter as the sixth voltage Vmin, and takes the voltage value corresponding to the maximum physical limit phase shift of the phase shifter as the fourth voltage Vmax. In order to avoid the voltage applied by the phase shifter causing the laser beam to reach the physical limit phase shift boundary, the fourth voltage Vmax is greater than the first voltage Vup, the first voltage Vup is greater than the second voltage Vdown, and the second voltage Vdown is greater than the sixth voltage Vmin.

[0077] The voltage range between the seventh voltage Vrup and the eighth voltage Vrdown is used as the preset voltage range. The voltage applied at the center position of the phase shifter is the ninth voltage Vcn. The difference between the seventh voltage Vrup and the ninth voltage Vcn is equal to the difference between the ninth voltage Vcn and the eighth voltage Vrdown. The first voltage Vup is greater than the seventh voltage Vrup, the seventh voltage Vrup is greater than the ninth voltage Vcn, the ninth voltage Vcn is greater than the eighth voltage Vrdown, and the eighth voltage Vrdown is greater than the second voltage Vdown.

[0078] This application addresses the following scenarios: when the current voltages of N target phase shifters are all greater than the first voltage Vup; when the current voltages of N target phase shifters are all less than the second voltage Vdown; and when the target phase shifters do not meet the preset conditions. The application adjusts the current voltage of the phase shifter or the current voltage of the target phase shifter to a preset voltage range, thereby ensuring the phase consistency of multiple laser beams while avoiding fluctuations and decreases in the combined beam power.

[0079] In one possible implementation, given the preset condition that the current voltages of all N target phase shifters are greater than the first voltage Vup, the voltage adjustment method is determined based on the current voltages of M phase shifters, the first voltage Vup, and the second voltage Vdown. Figure 3 The diagram shows a flowchart of another phase control method provided in this application embodiment. The steps of this method are as follows:

[0080] S301. Determine whether the current voltage of the M phase shifters is greater than the third voltage, wherein the third voltage is the sum of the first difference and the preset fourth voltage, the first difference is the difference between the second voltage and the first voltage, and the fourth voltage is greater than the first voltage.

[0081] S302. If the current voltage of all M phase shifters is greater than the third voltage, set the voltage adjustment mode to the first adjustment mode; otherwise, set the voltage adjustment mode to the second adjustment mode. The first adjustment mode is to reduce the current voltage of the M phase shifters, and the second adjustment mode is to reduce the current voltage of the N target phase shifters.

[0082] Specifically, when the voltage adjustment method is the first adjustment method, the current voltages of the M phase shifters are reduced by the adjustment voltage Vstep, and the process returns to the step of determining whether the current voltages of the M phase shifters are greater than the third voltage, until the current voltages of all M phase shifters are within the preset voltage range. When the voltage adjustment method is the second adjustment method, the current voltages of the N target phase shifters are reduced by the adjustment voltage Vstep, until the current voltages of all N target phase shifters are within the preset voltage range. It should be noted that when the voltage adjustment method is the first adjustment method, the M phase shifters include the target phase shifters.

[0083] In a specific embodiment, it is determined whether the current voltage of the phase shifter is greater than the third voltage. If the current voltage of all M phase shifters is greater than the third voltage, it is determined that the overall voltage applied by the phase shifters is too high, and the voltage adjustment method is determined to be the first adjustment method, that is, the adjustment voltage Vstep is reduced to the current voltage of the M phase shifters until the condition that the current voltage of all M phase shifters is not greater than the third voltage is no longer met. If the condition that the current voltage of all M phase shifters is not greater than the third voltage is not met, the voltage adjustment method is determined to be the second adjustment method, that is, the current voltage of the N target phase shifters is adjusted.

[0084] Wherein, the third voltage = the second voltage Vdown - the first voltage Vup + the fourth voltage Vmax.

[0085] It should be noted that this application improves the operating efficiency of the optical phased array algorithm by using an overall step-by-step reset method, and reduces the time required to adjust the current voltage of the phase shifter to the preset voltage range.

[0086] If the phase shift of each of the M phase shifters is [-2π, 2π], the corresponding voltage is [-120V, 120V], meaning the fourth voltage Vmax is 120V and the sixth voltage Vmin is -120V. The first voltage Vup is preset to 50V, the second voltage Vdown to -50V, the seventh voltage Vrup to 40V, and the eighth voltage Vrdown to -40V. The adjustable voltage Vstep is 2V. Therefore, the third voltage = second voltage Vdown - first voltage Vup + fourth voltage Vmax = -50V - 50V + 120V = 20V.

[0087] For example, when M is 5, the current voltages of the 5 phase shifters are determined to be A1 = 57V, A2 = 35V, A3 = 52V, A4 = 38V and A5 = 32V. The current voltages of the 5 phase shifters are compared with the preset first voltage 50V and second voltage -50V. The phase shifters whose current voltage is greater than the first voltage 50V or less than the second voltage -50V are determined as the target phase shifters. That is, the current voltages of the two target phase shifters among the 5 phase shifters are determined to be A1 = 57V and A3 = 52V. If the current voltage of the two target phase shifters is greater than the first voltage of 50V, determine whether the current voltage of the M phase shifters is greater than the third voltage of 20V. Since the current voltages of the five phase shifters A1=57V, A2=35V, A3=52V, A4=38V and A5=32V are all greater than the third voltage of 20V, the voltage adjustment method is determined to be the first adjustment method. The current voltage of the M phase shifters is reduced by the adjustment voltage of 2V, and it is determined whether the current voltage of the M phase shifters is greater than the third voltage of 20V, until the condition that the current voltage of the M phase shifters is not greater than the third voltage of 20V is no longer met.

[0088] In one possible implementation, if the current voltage of the M phase shifters is reduced by the adjustment voltage by 2V until the current voltage of all M phase shifters is no longer greater than the third voltage of 20V, and the current voltage of the target phase shifters A1 and A3 are both within the preset voltage range, then the voltage adjustment ends.

[0089] In another possible implementation, if the current voltage of the M phase shifters is reduced by the adjustment voltage of 2V until the current voltage of all M phase shifters is no longer greater than the third voltage of 20V, and the current voltage of the target phase shifter A1 and / or the target phase shifter A3 is not within the preset voltage range, then the adjustment voltage Vstep is reduced for the current voltage of the target phase shifter until the current voltage of the target phase shifter A1 and the target phase shifter A3 are both within the preset voltage range.

[0090] For example, when M is 5, the current voltages of the 5 phase shifters are determined to be A1 = 57V, A2 = 17V, A3 = 54V, A4 = 15V and A5 = 32V. The current voltages of the 5 phase shifters are compared with the preset first voltage 50V and second voltage -50V. The phase shifters whose current voltage is greater than the first voltage 50V or less than the second voltage -50V are determined as the target phase shifters. That is, the current voltages of the two target phase shifters among the 5 phase shifters are determined to be A1 = 57V and A3 = 54V. If the current voltages of the two target phase shifters are both greater than the first voltage of 50V, determine whether the current voltages of the M phase shifters are all greater than the third voltage of 20V. Since among the current voltages of the five phase shifters A1=57V, A2=17V, A3=54V, A4=15V and A5=32V, A2=17V and A4=15V are less than the third voltage of 20V, that is, the current voltages of the M phase shifters are not greater than the third voltage of 20V, the voltage adjustment method is determined to be the second adjustment method. The current voltages of the target phase shifters A1 and A3 are reduced by the adjustment voltage of 2V until the current voltages of the target phase shifters A1 and A3 are both within the preset voltage range.

[0091] Figure 4(a) shows a schematic diagram of the relationship between combined optical power and time provided in an embodiment of this application, where the seventh voltage Vrup is 40V and the eighth voltage Vrdown is -40V. Figure 4(b) shows a schematic diagram of the relationship between combined optical power and time provided in the prior art, where the seventh voltage Vrup = the eighth voltage Vrdown = 0V. As can be seen from Figures 4(a) and 4(b), when the phase shift amount of the phase shifter corresponding to the preset voltage range is at the center position of the phase shifter, it will cause a sharp drop in the combined optical power. Therefore, the phase shift amount of the phase shifter corresponding to the preset voltage range set in this application is not at the center position of the phase shifter, thereby reducing the problem of decreased combined optical power due to phase cancellation during the process of adjusting the current voltage of the phase shifter or the target phase shifter to the preset voltage range.

[0092] In another possible implementation, under the preset condition that the current voltages of all N target phase shifters are less than the second voltage Vdown, the voltage adjustment method is determined based on the current voltages of M phase shifters, the first voltage Vup, and the second voltage Vdown, such as... Figure 5 The diagram shows a flowchart of another phase control method provided in this application embodiment. The steps of this method are as follows:

[0093] S501. Determine whether the current voltage of the M phase shifters is less than the fifth voltage, where the fifth voltage is the sum of the second difference and the preset sixth voltage, the second difference is the difference between the first voltage and the second voltage, and the sixth voltage is less than the second voltage.

[0094] S502. If the current voltage of all M phase shifters is less than the fifth voltage, set the voltage adjustment mode to the third adjustment mode; otherwise, set the voltage adjustment mode to the fourth adjustment mode. The third adjustment mode increases the current voltage of the M phase shifters, and the fourth adjustment mode increases the current voltage of the N target phase shifters.

[0095] Specifically, when the voltage adjustment method is the third adjustment method, the current voltage of the M phase shifters is increased by the adjustment voltage Vstep, and the process returns to the step of determining whether the current voltage of the M phase shifters is less than the fifth voltage, until the current voltage of all M phase shifters is within the preset voltage range. When the voltage adjustment method is the fourth adjustment method, the current voltage of the N target phase shifters is increased by the adjustment voltage Vstep, until the current voltage of all N target phase shifters is within the preset voltage range. It should be noted that when the voltage adjustment method is the third adjustment method, the M phase shifters include the target phase shifters.

[0096] In a specific embodiment, it is determined whether the current voltage of the phase shifter is less than the fifth voltage. If the current voltage of all M phase shifters is less than the fifth voltage, it is determined that the overall voltage applied to the phase shifters is too low, and the voltage adjustment method is determined to be the third adjustment method, that is, the adjustment voltage Vstep is increased to the current voltage of the M phase shifters until the condition that the current voltage of all M phase shifters is not less than the fifth voltage is no longer met. If the condition that the current voltage of all M phase shifters is not less than the fifth voltage is not met, the voltage adjustment method is determined to be the fourth adjustment method, that is, the current voltage of the N target phase shifters is adjusted.

[0097] Wherein, the fifth voltage = the first voltage Vup - the second voltage Vdown + the sixth voltage Vmin.

[0098] If the phase shift of each of the M phase shifters is [-2π, 2π], the corresponding voltage is [-120V, 120V], meaning the fourth voltage Vmax is 120V and the sixth voltage Vmin is -120V. The first voltage Vup is preset to 50V, the second voltage Vdown to -50V, the seventh voltage Vrup to 40V, and the eighth voltage Vrdown to -40V. The adjustment voltage Vstep is 2V. Therefore, the fifth voltage = first voltage Vup - second voltage Vdown + sixth voltage Vmin = 50V - (-50V) + (-120V) = -20V.

[0099] For example, when M is 5, the current voltages of the 5 phase shifters are determined to be B1 = -65V, B2 = -55V, B3 = -27V, B4 = -32V and B5 = -43V. The current voltages of the 5 phase shifters are compared with the preset first voltage 50V and second voltage -50V. The phase shifters whose current voltage is greater than the first voltage 50V or less than the second voltage -50V are determined as the target phase shifters. That is, the current voltages of the two target phase shifters among the 5 phase shifters are determined to be B1 = -65V and B2 = -55V. If the current voltage of both target phase shifters is less than the fifth voltage -50V, determine whether the current voltage of the phase shifters is less than the fifth voltage -20V. Since the current voltages of the five phase shifters are B1 = -65V, B2 = -55V, B3 = -27V, B4 = -32V, and B5 = -43V, which are all less than the fifth voltage -20V, the voltage adjustment method is determined to be the third adjustment method. Increase the current voltage of M phase shifters by 2V and determine whether the current voltage of M phase shifters is less than the fifth voltage -20V, until the condition that the current voltage of M phase shifters is not less than the fifth voltage -20V is no longer met.

[0100] In one possible implementation, if the current voltage of the M phase shifters is increased by the adjustment voltage by 2V until the current voltage of all M phase shifters is no longer less than the fifth voltage -20V, and the current voltage of the target phase shifters B1 and B2 is within the preset voltage range, then the voltage adjustment ends.

[0101] In another possible implementation, if the current voltage of the M phase shifters is increased by the adjustment voltage of 2V until the current voltage of all M phase shifters is less than the fifth voltage -20V, and the current voltage of the target phase shifter B1 and / or the target phase shifter B2 is not within the preset voltage range, then the adjustment voltage Vstep is increased for the current voltage of the target phase shifter until the current voltage of the target phase shifter B1 and the target phase shifter B2 are both within the preset voltage range.

[0102] For example, when M is 5, the current voltages of the 5 phase shifters are determined to be B1 = -65V, B2 = 11V, B3 = -12V, B4 = -52V and B5 = -43V. The current voltages of the 5 phase shifters are compared with the preset first voltage 50V and second voltage -50V. The phase shifters whose current voltage is greater than the first voltage 50V or less than the second voltage -50V are determined as the target phase shifters. That is, the current voltages of the two target phase shifters among the 5 phase shifters are determined to be B1 = -65V and B4 = -52V. If the current voltage of both target phase shifters is less than the second voltage -50V, determine whether the current voltage of the phase shifters is less than the fifth voltage -20V. Since the current voltages of the five phase shifters are B1 = -65V, B2 = 11V, B3 = -12V, B4 = -52V and B5 = -43V, B2 = 11V and B3 = -12V are greater than the fifth voltage -20V. Therefore, the voltage adjustment method is determined to be the fourth adjustment method. The current voltages of target phase shifters B1 and B3 are increased by the adjustment voltage by 2V until the current voltages of target phase shifters B1 and B3 are both within the preset voltage range.

[0103] In another possible implementation, if the current voltage of the target phase shifter does not meet a preset condition, the current voltage of the target phase shifter is adjusted to a preset voltage range based on an adjustment voltage. This method includes:

[0104] For a first target phase shifter whose current voltage is greater than a first voltage, the current voltage of the first target phase shifter is reduced by the adjustment voltage until the current voltage of the first target phase shifter is within a preset voltage range; for a second target phase shifter whose current voltage is less than a second voltage, the current voltage of the second target phase shifter is increased by the adjustment voltage until the current voltage of the second target phase shifter is within a preset voltage range.

[0105] For example, if the current voltages of five phase shifters are determined to be C1 = 67V, C2 = 35V, C3 = -11V, C4 = -57V, and C5 = -68V, then these current voltages are compared with a preset first voltage of 50V and a second voltage of -50V. The phase shifter whose current voltage is greater than the first voltage of 50V or less than the second voltage of -50V is identified as the target phase shifter. That is, the current voltages of the target phase shifters are determined to be C1 = 67V, C4 = -57V, and C5 = -68V. If the current voltages of the target phase shifters (C1 = 67V, C4 = -57V, and C5 = -68V) are compared with the first voltage of 50V and the second voltage of -50V, and it is determined that the current voltages of the target phase shifters do not meet the preset conditions, then the current voltages of the target phase shifters are adjusted to the preset voltage range based on the adjustment voltage.

[0106] In other words, for the target phase shifter C1 = 67V whose current voltage is greater than the first boundary, the current voltage of the target phase shifter C1 = 67V is reduced by the adjustment voltage by 2V until the current voltage of the target phase shifter C1 = 67V is within the preset voltage range; for the target phase shifters C4 = -57V and C5 = -68V whose current voltage is less than the second boundary, the current voltage of the target phase shifters C4 = -57V and C5 = -68V is increased by the adjustment voltage by 2V until the current voltage of the target phase shifters C4 = -57V and C5 = -68V is within the preset voltage range.

[0107] In one possible implementation, such as Figure 6 The diagram shown is a complete flowchart of a phase control method provided in an embodiment of this application. The steps of the method are as follows:

[0108] S601. Determine the current voltage of the M phase shifters;

[0109] S602. Compare the current voltages of the M phase shifters with the preset first and second voltages to determine the N target phase shifters;

[0110] S603. Determine whether the current voltage of the target phase shifter meets the preset conditions. If yes, proceed to S604; otherwise, proceed to S605.

[0111] S604. Determine whether the preset condition is met: the current voltage of the target phase shifter is greater than the first voltage. If yes, execute S606; otherwise, execute S607.

[0112] S605. Adjust the current voltage of the target phase shifter to a preset voltage range based on the adjustment voltage;

[0113] S606. For M phase shifters, determine whether the current voltage of the phase shifter is greater than the third voltage. If yes, execute S608; otherwise, execute S609.

[0114] S607. For M phase shifters, determine whether the current voltage of the phase shifter is less than the fifth voltage. If yes, execute S610; otherwise, execute S611.

[0115] S608. Reduce the current voltage of the phase shifter by the adjustment voltage until the current voltage of all M phase shifters is within the preset voltage range;

[0116] S609. Reduce the current voltage of the target phase shifter by the adjustment voltage until the current voltages of all N target phase shifters are within the preset voltage range;

[0117] S610. Increase the current voltage of the phase shifter by the adjustment voltage until the current voltages of all M phase shifters are within the preset voltage range;

[0118] S611. Increase the current voltage of the target phase shifter by adjusting the voltage until the current voltage of all N target phase shifters is within the preset voltage range.

[0119] This application sets preset conditions. When the current voltage of the target phase shifter meets the preset conditions, the current voltage of the phase shifter or the current voltage of the target phase shifter is adjusted to a preset voltage range. When the current voltage of the target phase shifter does not meet the preset conditions, the current voltage of the target phase shifter is adjusted to a preset voltage range. This ensures the phase consistency of multiple laser beams while avoiding fluctuations and decreases in the combined beam power.

[0120] Based on the same inventive concept, this application provides a phased array laser terminal. The principle of this phased array laser terminal is similar to the aforementioned phase control method, and repeated details will not be elaborated further. Figure 1 As shown, it includes an optical module, an optical fiber beam splitter, M phase shifters, a controller, a beam sampler, and a space optical detector;

[0121] Optical module, used to emit lasers;

[0122] Fiber optic beam splitters are used to split laser beams into multiple laser beams;

[0123] A phase shifter is used to adjust the phase of a laser beam based on the current voltage.

[0124] The controller is configured to select N target phase shifters from M phase shifters whose current voltage is greater than a first voltage or less than a second voltage, where the first voltage is greater than the second voltage, M is a positive integer greater than or equal to N and greater than or equal to 2, and N is a positive integer greater than or equal to 1; if the current voltage of the target phase shifter meets a preset condition, the controller determines a voltage adjustment method based on the current voltage of the M phase shifters, the first voltage, and the second voltage; based on the voltage adjustment method and the adjustment voltage, the controller adjusts the current voltage of the phase shifter to a preset voltage range; if the current voltage of the target phase shifter does not meet the preset condition, the controller adjusts the current voltage of the target phase shifter to a preset voltage range based on the adjustment voltage; wherein the preset condition is that the current voltage of all N target phase shifters is greater than the first voltage, or the current voltage of all N target phase shifters is less than the second voltage.

[0125] A beam splitter sampler is used to split the laser beam output from the phase shifter into two laser beams.

[0126] Space photodetector, used to determine the combined beam power.

[0127] This application provides a phase control method and a phased array laser terminal. The method includes: selecting N target phase shifters from M phase shifters whose current voltage is greater than a first voltage or less than a second voltage, wherein the first voltage is greater than the second voltage, M is a positive integer greater than or equal to N and greater than or equal to 2, and N is a positive integer greater than or equal to 1; determining a voltage adjustment method based on the current voltage of the M phase shifters, the first voltage, and the second voltage when the current voltage of the target phase shifters meets a preset condition; adjusting the current voltage of the phase shifters to a preset voltage range based on the voltage adjustment method and the adjustment voltage; and adjusting the current voltage of the target phase shifters to a preset voltage range when the current voltage of the target phase shifters does not meet the preset condition, adjusting the current voltage of the target phase shifters to a preset voltage range based on the adjustment voltage; wherein the preset condition is that the current voltage of all N target phase shifters is greater than the first voltage or the current voltage of all N target phase shifters is less than the second voltage. In other words, this application sets preset conditions. When the current voltage of the target phase shifter meets the preset conditions, the current voltage of the target phase shifter is adjusted to the preset voltage range. When the current voltage of the target phase shifter does not meet the preset conditions, the current voltage of the target phase shifter is adjusted to the preset voltage range. This ensures the phase consistency of multiple laser beams while avoiding fluctuations and decreases in the combined beam power.

[0128] In one possible implementation, the controller is specifically used for:

[0129] Determine whether the current voltage of the M phase shifters is greater than a third voltage, wherein the third voltage is the sum of a first difference and a preset fourth voltage, the first difference is the difference between the second voltage and the first voltage, and the fourth voltage is greater than the first voltage;

[0130] If the current voltages of all M phase shifters are greater than the third voltage, the voltage adjustment method is set to the first adjustment method; otherwise, the voltage adjustment method is set to the second adjustment method. The first adjustment method is to reduce the current voltages of the M phase shifters, and the second adjustment method is to reduce the current voltages of the N target phase shifters.

[0131] In one possible implementation, the controller is specifically used for:

[0132] When the voltage adjustment method is the first adjustment method, the current voltage of the M phase shifters is reduced by the adjustment voltage, and the process returns to the step of determining whether the current voltage of the M phase shifters is greater than the third voltage, until the current voltage of the M phase shifters is within the preset voltage range;

[0133] When the voltage adjustment mode is the second adjustment mode, the current voltage of the N target phase shifters is reduced by the adjustment voltage until the current voltage of the N target phase shifters are all within the preset voltage range.

[0134] In one possible implementation, the controller is specifically used for:

[0135] Determine whether the current voltage of the M phase shifters is less than the fifth voltage, wherein the fifth voltage is the sum of the second difference and the preset sixth voltage, the second difference is the difference between the first voltage and the second voltage, and the sixth voltage is less than the second voltage;

[0136] If the current voltages of all M phase shifters are less than the fifth voltage, the voltage adjustment method is set to the third adjustment method; otherwise, the voltage adjustment method is set to the fourth adjustment method. The third adjustment method is to increase the current voltages of the M phase shifters, and the fourth adjustment method is to increase the current voltages of the N target phase shifters.

[0137] In one possible implementation, the controller is specifically used for:

[0138] When the voltage adjustment method is the third adjustment method, the current voltage of the M phase shifters is increased by the adjustment voltage, and the process returns to the step of determining whether the current voltage of the M phase shifters is less than the fifth voltage, until the current voltage of the M phase shifters is within the preset voltage range;

[0139] When the voltage adjustment method is the fourth adjustment method, the current voltage of the N target phase shifters is increased by the adjustment voltage until the current voltage of the N target phase shifters are all within the preset voltage range.

[0140] In one possible implementation, the controller is specifically used for:

[0141] For a first target phase shifter whose current voltage is greater than the first voltage, the adjustment voltage is reduced to decrease the current voltage of the first target phase shifter until the current voltage of the first target phase shifter is within the preset voltage range;

[0142] For a second target phase shifter whose current voltage is less than the second voltage, increase the adjustment voltage of the second target phase shifter until the current voltage of the second target phase shifter is within the preset voltage range.

[0143] The present application has been described above with reference to block diagrams and / or flowcharts illustrating methods, apparatus (systems), and / or computer program products according to embodiments of the present application. It should be understood that a block of a block diagram and / or flowchart, as well as combinations of blocks of block diagrams and / or flowcharts, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, and / or other programmable data processing means to produce a machine, such that the instructions, executable via the computer processor and / or other programmable data processing means, create methods for implementing the functions / actions specified in the blocks of the block diagrams and / or flowcharts.

[0144] Accordingly, this application can also be implemented using hardware and / or software (including firmware, resident software, microcode, etc.). Furthermore, this application can take the form of a computer program product on a computer-usable or computer-readable storage medium, having computer-usable or computer-readable program code implemented in the medium for use by or in conjunction with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium can be any medium that can contain, store, communicate, transmit, or deliver a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0145] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A phase control method, characterized in that, The method includes: Select N target phase shifters from M phase shifters whose current voltage is greater than a first voltage or less than a second voltage, where the first voltage is greater than the second voltage, M is a positive integer greater than or equal to N and greater than or equal to 2, and N is a positive integer greater than or equal to 1. If the current voltage of the target phase shifter meets the preset conditions, a voltage adjustment method is determined based on the current voltages of the M phase shifters, the first voltage, and the second voltage; based on the voltage adjustment method and the adjustment voltage, the current voltage of the phase shifter is adjusted to a preset voltage range. If the current voltage of the target phase shifter does not meet the preset condition, the current voltage of the target phase shifter is adjusted to the preset voltage range based on the adjustment voltage. The preset condition is that the current voltage of all N target phase shifters is greater than the first voltage, or the current voltage of all N target phase shifters is less than the second voltage.

2. The method as described in claim 1, characterized in that, The preset condition is that the current voltage of all N target phase shifters is greater than the first voltage; The step of determining the voltage adjustment method based on the current voltages of the M phase shifters, the first voltage, and the second voltage includes: Determine whether the current voltage of the M phase shifters is greater than a third voltage, wherein the third voltage is the sum of a first difference and a preset fourth voltage, the first difference is the difference between the second voltage and the first voltage, and the fourth voltage is greater than the first voltage; If the current voltages of all M phase shifters are greater than the third voltage, the voltage adjustment method is set to the first adjustment method; otherwise, the voltage adjustment method is set to the second adjustment method. The first adjustment method is to reduce the current voltages of the M phase shifters, and the second adjustment method is to reduce the current voltages of the N target phase shifters.

3. The method as described in claim 2, characterized in that, The step of adjusting the current voltage of the phase shifter to a preset voltage range based on the voltage adjustment method and the adjustment voltage includes: When the voltage adjustment method is the first adjustment method, the current voltage of the M phase shifters is reduced by the adjustment voltage, and the process returns to the step of determining whether the current voltage of the M phase shifters is greater than the third voltage, until the current voltage of the M phase shifters is within the preset voltage range; When the voltage adjustment mode is the second adjustment mode, the current voltage of the N target phase shifters is reduced by the adjustment voltage until the current voltage of the N target phase shifters are all within the preset voltage range.

4. The method as described in claim 1, characterized in that, The preset condition is that the current voltage of all N target phase shifters is less than the second voltage; The step of determining the voltage adjustment method based on the current voltages of the M phase shifters, the first voltage, and the second voltage includes: Determine whether the current voltage of the M phase shifters is less than the fifth voltage, wherein the fifth voltage is the sum of the second difference and the preset sixth voltage, the second difference is the difference between the first voltage and the second voltage, and the sixth voltage is less than the second voltage; If the current voltages of all M phase shifters are less than the fifth voltage, the voltage adjustment method is set to the third adjustment method; otherwise, the voltage adjustment method is set to the fourth adjustment method. The third adjustment method is to increase the current voltages of the M phase shifters, and the fourth adjustment method is to increase the current voltages of the N target phase shifters.

5. The method as described in claim 4, characterized in that, The step of adjusting the current voltage of the phase shifter to a preset voltage range based on the voltage adjustment method and the adjustment voltage includes: When the voltage adjustment method is the third adjustment method, the current voltage of the M phase shifters is increased by the adjustment voltage, and the process returns to the step of determining whether the current voltage of the M phase shifters is less than the fifth voltage, until the current voltage of the M phase shifters is within the preset voltage range; When the voltage adjustment method is the fourth adjustment method, the current voltage of the N target phase shifters is increased by the adjustment voltage until the current voltage of the N target phase shifters are all within the preset voltage range.

6. The method as described in claim 1, characterized in that, The step of adjusting the current voltage of the target phase shifter to the preset voltage range based on the adjustment voltage when the current voltage of the target phase shifter does not meet the preset condition includes: For a first target phase shifter whose current voltage is greater than the first voltage, the adjustment voltage is reduced to decrease the current voltage of the first target phase shifter until the current voltage of the first target phase shifter is within the preset voltage range; For a second target phase shifter whose current voltage is less than the second voltage, increase the adjustment voltage of the second target phase shifter until the current voltage of the second target phase shifter is within the preset voltage range.

7. A phased array laser terminal, characterized in that, It includes an optical module, an optical fiber beam splitter, M phase shifters, a controller, a beam sampler, and a space optical detector; The optical module is used to emit laser light; The fiber optic beam splitter is used to split the laser into multiple laser beams; The phase shifter is used to adjust the phase of the laser beam based on the current voltage; The controller is configured to select N target phase shifters from M phase shifters whose current voltage is greater than a first voltage or less than a second voltage, wherein the first voltage is greater than the second voltage, M is a positive integer greater than or equal to N and greater than or equal to 2, and N is a positive integer greater than or equal to 1; if the current voltage of the target phase shifter meets a preset condition, the controller determines a voltage adjustment method based on the current voltage of the M phase shifters, the first voltage, and the second voltage; and adjusts the current voltage of the phase shifter to a preset voltage range based on the voltage adjustment method and the adjustment voltage; if the current voltage of the target phase shifter does not meet the preset condition, the controller adjusts the current voltage of the target phase shifter to the preset voltage range based on the adjustment voltage; wherein the preset condition is that the current voltage of all N target phase shifters is greater than the first voltage, or the current voltage of all N target phase shifters is less than the second voltage. The beam splitter is used to split the laser beam output by the phase shifter into two laser beams. The space photodetector is used to determine the combined beam power.

8. The phased array laser terminal as described in claim 7, characterized in that, The controller is specifically used for: Determine whether the current voltage of the M phase shifters is greater than a third voltage, wherein the third voltage is the sum of a first difference and a preset fourth voltage, the first difference is the difference between the second voltage and the first voltage, and the fourth voltage is greater than the first voltage; If the current voltages of all M phase shifters are greater than the third voltage, the voltage adjustment method is set to the first adjustment method; otherwise, the voltage adjustment method is set to the second adjustment method. The first adjustment method is to reduce the current voltages of the M phase shifters, and the second adjustment method is to reduce the current voltages of the N target phase shifters.

9. The phased array laser terminal as described in claim 8, characterized in that, The controller is specifically used for: When the voltage adjustment method is the first adjustment method, the current voltage of the M phase shifters is reduced by the adjustment voltage, and the process returns to the step of determining whether the current voltage of the M phase shifters is greater than the third voltage, until the current voltage of the M phase shifters is within the preset voltage range; When the voltage adjustment mode is the second adjustment mode, the current voltage of the N target phase shifters is reduced by the adjustment voltage until the current voltage of the N target phase shifters are all within the preset voltage range.

10. The phased array laser terminal as described in claim 7, characterized in that, The controller is specifically used for: Determine whether the current voltage of the M phase shifters is less than the fifth voltage, wherein the fifth voltage is the sum of the second difference and the preset sixth voltage, the second difference is the difference between the first voltage and the second voltage, and the sixth voltage is less than the second voltage; If the current voltages of all M phase shifters are less than the fifth voltage, the voltage adjustment method is set to the third adjustment method; otherwise, the voltage adjustment method is set to the fourth adjustment method. The third adjustment method is to increase the current voltages of the M phase shifters, and the fourth adjustment method is to increase the current voltages of the N target phase shifters.

11. The phased array laser terminal as described in claim 10, characterized in that, The controller is specifically used for: When the voltage adjustment method is the third adjustment method, the current voltage of the M phase shifters is increased by the adjustment voltage, and the process returns to the step of determining whether the current voltage of the M phase shifters is less than the fifth voltage, until the current voltage of the M phase shifters is within the preset voltage range; When the voltage adjustment method is the fourth adjustment method, the current voltage of the N target phase shifters is increased by the adjustment voltage until the current voltage of the N target phase shifters are all within the preset voltage range.

12. The phased array laser terminal as described in claim 7, characterized in that, The controller is specifically used for: For a first target phase shifter whose current voltage is greater than the first voltage, the adjustment voltage is reduced to decrease the current voltage of the first target phase shifter until the current voltage of the first target phase shifter is within the preset voltage range; For a second target phase shifter whose current voltage is less than the second voltage, increase the adjustment voltage of the second target phase shifter until the current voltage of the second target phase shifter is within the preset voltage range.

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