An adjustable optical fiber array unit based on piezoelectric ceramic displacement control

Abstract

The application relates to an adjustable optical fiber array unit based on piezoelectric ceramic displacement control, which comprises a coupling clamp for fixing an optical fiber array; a plurality of piezoelectric ceramic actuators, each of which is connected to the coupling clamp and used for controlling six degrees of freedom of the coupling clamp; the application can accurately control the position of the coupling clamp by controlling the movement of the coupling clamp in each degree of freedom through the plurality of piezoelectric ceramic actuators. Compared with the current optical fiber array unit which cannot be finely adjusted, the coupling difficulty is greatly reduced, and the automatic coupling is more favorable, so that the working hours and costs are greatly saved; in the long-term application process, if the position of the fixed optical fiber array unit appears to drift due to stress release or the like, the optical fiber array unit can be re-coupled to the maximum power through the adjustment of the corresponding piezoelectric ceramic actuator, so that the long-term reliability is greatly improved.

Description

Technical Field

[0001] This invention relates to the fields of optical communication and optical interconnection technology, and specifically to an adjustable fiber optic array unit based on piezoelectric ceramic displacement control. Background Technology

[0002] Existing silicon photonics (PIC) chips all have arrayed waveguides, which are then coupled to fiber array units (FAUs) via lens arrays. During coupling, traditional coupling clamps are relatively coarse because each fiber in the fiber array must be aligned simultaneously, making it difficult to consistently achieve sub-micron level adjustment accuracy. Furthermore, during use, the position of the FAU may drift due to stress release and other factors, resulting in power degradation. Summary of the Invention

[0003] To address the technical problems of existing technologies, such as the relatively roughness of traditional coupling clamps, the difficulty in achieving stable sub-micron level adjustment accuracy, and the drift of fiber array unit (FAU) position due to stress release and other reasons during use, resulting in power reduction, this invention provides an adjustable fiber array unit based on piezoelectric ceramic displacement control.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: An adjustable fiber optic array unit based on piezoelectric ceramic displacement control includes: Coupling clamps are used to fix fiber optic arrays; Multiple piezoelectric ceramic actuators are connected to the coupling fixture to control the six degrees of freedom of the coupling fixture.

[0005] The beneficial effects of this invention are: by utilizing multiple piezoelectric ceramic actuators to control the movement of the coupling clamp in each degree of freedom, the position of the coupling clamp can be precisely controlled. Compared to current fiber optic array units that cannot be finely adjusted, the technical solution provided by this invention greatly reduces the difficulty of coupling and is more conducive to automated coupling, thereby significantly saving labor time and costs; during long-term application, if the fixed fiber optic array unit drifts due to stress release or other reasons, the fiber optic array unit can be recoupled to maximum power by adjusting the corresponding piezoelectric ceramic actuators, thus greatly improving long-term reliability.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the plurality of piezoelectric ceramic actuators are respectively a first piezoelectric ceramic actuator, a second piezoelectric ceramic actuator, a third piezoelectric ceramic actuator, a fourth piezoelectric ceramic actuator, a fifth piezoelectric ceramic actuator, a sixth piezoelectric ceramic actuator, a seventh piezoelectric ceramic actuator, an eighth piezoelectric ceramic actuator, a ninth piezoelectric ceramic actuator, and a tenth piezoelectric ceramic actuator. The first piezoelectric ceramic actuator and the second piezoelectric ceramic actuator jointly control the translational degree of freedom of the coupling fixture on the Z-axis; The third, fourth, fifth, sixth, seventh, eighth, ninth, and tenth piezoelectric ceramic actuators jointly control the coupling fixture's translational degrees of freedom on the X-axis, translational degrees of freedom on the Y-axis, rotational degrees of freedom (pitch angle) about the X-axis, rotational degrees of freedom (yaw angle) about the Y-axis, and rotational degrees of freedom (roll angle) about the Z-axis.

[0008] Furthermore, the first piezoelectric ceramic actuator is located at one end of the coupling fixture, and the second piezoelectric ceramic actuator is located at the other end of the coupling fixture; The third, fourth, fifth, and sixth piezoelectric ceramic actuators are all located on one side of the coupling fixture, while the seventh, eighth, ninth, and tenth piezoelectric ceramic actuators are all located on the other side of the coupling fixture.

[0009] Furthermore, when a negative voltage is applied to the first piezoelectric ceramic actuator and a positive voltage is applied to the second piezoelectric ceramic actuator, the coupling clamp moves in the positive direction of the Z-axis; when a positive voltage is applied to the first piezoelectric ceramic actuator and a negative voltage is applied to the second piezoelectric ceramic actuator, the coupling clamp moves in the negative direction of the Z-axis.

[0010] Furthermore, when the third, fourth, fifth, and sixth piezoelectric ceramic actuators are all subjected to a positive voltage, and the seventh, eighth, ninth, and tenth piezoelectric ceramic actuators are all subjected to a negative voltage, the coupling clamp moves in the positive direction of the X-axis. When the third, fourth, fifth, and sixth piezoelectric ceramic actuators are all subjected to negative voltages, and the seventh, eighth, ninth, and tenth piezoelectric ceramic actuators are all subjected to positive voltages, the coupling clamp moves in the negative direction of the X-axis.

[0011] Furthermore, when the third, fourth, seventh, and eighth piezoelectric ceramic actuators are all subjected to negative voltages, and the fifth, sixth, ninth, and tenth piezoelectric ceramic actuators are all subjected to positive voltages, the coupling clamp moves in the positive direction of the Y-axis. When the third, fourth, seventh, and eighth piezoelectric ceramic actuators are all subjected to a positive voltage, and the fifth, sixth, ninth, and tenth piezoelectric ceramic actuators are all subjected to a negative voltage, the coupling clamp moves in the negative direction of the Y-axis.

[0012] Furthermore, when the third, fifth, eighth, and tenth piezoelectric ceramic actuators are all subjected to positive voltages, and the fourth, sixth, seventh, and ninth piezoelectric ceramic actuators are all subjected to negative voltages, the coupling clamp rotates clockwise around the Y-axis. When the third, fifth, eighth, and tenth piezoelectric ceramic actuators are all subjected to negative voltages, and the fourth, sixth, seventh, and ninth piezoelectric ceramic actuators are all subjected to positive voltages, the coupling clamp reverses its rotation around the Y-axis.

[0013] Furthermore, when the third, sixth, seventh, and tenth piezoelectric ceramic actuators are all subjected to positive voltages, and the fourth, fifth, eighth, and ninth piezoelectric ceramic actuators are all subjected to negative voltages, the coupling clamp rotates clockwise around the X-axis. When the third, sixth, seventh, and tenth piezoelectric ceramic actuators are all subjected to negative voltages, and the fourth, fifth, eighth, and ninth piezoelectric ceramic actuators are all subjected to positive voltages, the coupling clamp reverses its rotation around the X-axis.

[0014] Furthermore, when the fifth, sixth, seventh, and eighth piezoelectric ceramic actuators are all subjected to positive voltages, and the third, fourth, ninth, and tenth piezoelectric ceramic actuators are all subjected to negative voltages, the coupling fixture rotates clockwise around the Z-axis. When the fifth, sixth, seventh, and eighth piezoelectric ceramic actuators are all subjected to negative voltages, and the third, fourth, ninth, and tenth piezoelectric ceramic actuators are all subjected to positive voltages, the coupling fixture reverses its rotation around the Z-axis.

[0015] Furthermore, the combined force of the actuation forces of the third and fourth piezoelectric ceramic actuators pushes one side of the coupling clamp to move in the negative direction of the Y-axis; the combined force of the actuation forces of the fifth and sixth piezoelectric ceramic actuators pushes one side of the coupling clamp to move in the positive direction of the Y-axis; the combined force of the actuation forces of the seventh and eighth piezoelectric ceramic actuators pushes the other side of the coupling clamp to move in the negative direction of the Y-axis; and the combined force of the actuation forces of the ninth and tenth piezoelectric ceramic actuators pushes the other side of the coupling clamp to move in the positive direction of the Y-axis. The combined force of the actuation forces of the third and fifth piezoelectric ceramic actuators pushes one end of the coupling clamp to move in the positive direction of the X-axis; the combined force of the actuation forces of the seventh and ninth piezoelectric ceramic actuators pushes one end of the coupling clamp to move in the negative direction of the X-axis; the combined force of the actuation forces of the fourth and sixth piezoelectric ceramic actuators pushes the other end of the coupling clamp to move in the positive direction of the X-axis; the combined force of the actuation forces of the eighth and tenth piezoelectric ceramic actuators pushes the other end of the coupling clamp to move in the negative direction of the X-axis. The combined force of the actuation forces of the fifth and ninth piezoelectric ceramic actuators pushes one end of the coupling clamp to move in the positive direction of the Y-axis; the combined force of the actuation forces of the third and seventh piezoelectric ceramic actuators pushes one end of the coupling clamp to move in the positive direction of the Y-axis; the combined force of the actuation forces of the sixth and tenth piezoelectric ceramic actuators pushes the other end of the coupling clamp to move in the positive direction of the Y-axis; and the combined force of the actuation forces of the fourth and eighth piezoelectric ceramic actuators pushes the other end of the coupling clamp to move in the positive direction of the Y-axis. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an adjustable fiber optic array unit based on piezoelectric ceramic displacement control in an embodiment of the present invention; Figure 2 This is a schematic diagram showing the distribution of each piezoelectric ceramic actuator in an embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the application of an adjustable fiber optic array unit based on piezoelectric ceramic displacement control in an embodiment of the present invention. Figure 4 This is a schematic diagram showing the distribution of the third, fifth, seventh, and ninth piezoelectric ceramic actuators in an embodiment of the present invention. Figure 5 This is a schematic diagram showing the distribution of the fourth, sixth, eighth, and tenth piezoelectric ceramic actuators in an embodiment of the present invention. Figure 6 This is a schematic diagram of the piezoelectric ceramic control circuit in an embodiment of the present invention.

[0017] The attached diagram lists the components represented by each number as follows: 1-First piezoelectric ceramic actuator, 2-Second piezoelectric ceramic actuator, 3-Third piezoelectric ceramic actuator, 4-Fourth piezoelectric ceramic actuator, 5-Fifth piezoelectric ceramic actuator, 6-Sixth piezoelectric ceramic actuator, 7-Seventh piezoelectric ceramic actuator, 8-Eighth piezoelectric ceramic actuator, 9-Ninth piezoelectric ceramic actuator, 10-Tenth piezoelectric ceramic actuator, 11-Coupled clamp, 12-Fiber optic array, 13-Clamp cover, 14-Piezoelectric ceramic control console, 15-Control circuit mounting platform. Detailed Implementation

[0018] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0019] like Figure 1 , Figure 2 as well as Figure 3 As shown, this embodiment provides an adjustable fiber optic array unit based on piezoelectric ceramic displacement control, including a coupling clamp 11, a fiber optic array 12, a clamp cover 13, a piezoelectric ceramic control console 14, a control circuit mounting platform 15, and multiple piezoelectric ceramic actuators. The coupling clamp 11 has a V-groove to accommodate the fiber optic array 12, and the clamp cover 13 fixes the fiber optic array 12 within the V-groove on the coupling clamp 11. The piezoelectric ceramic control console 14 has a window to accommodate the coupling clamp 11, allowing the coupling clamp 11 to move within the window. The control circuit mounting platform 15 is connected to the piezoelectric ceramic control console 14 and is used to mount a piezoelectric control circuit board. The piezoelectric control circuit board has a piezoelectric control circuit for controlling the magnitude and polarity of the voltage of the multiple piezoelectric ceramic actuators.

[0020] The coupling clamp 11 is used to fix the fiber array 12; multiple piezoelectric ceramic actuators are all connected to the coupling clamp 11 to control the six degrees of freedom of the coupling clamp 11.

[0021] In some embodiments, the plurality of piezoelectric ceramic actuators are a first piezoelectric ceramic actuator 1, a second piezoelectric ceramic actuator 2, a third piezoelectric ceramic actuator 3, a fourth piezoelectric ceramic actuator 4, a fifth piezoelectric ceramic actuator 5, a sixth piezoelectric ceramic actuator 6, a seventh piezoelectric ceramic actuator 7, an eighth piezoelectric ceramic actuator 8, a ninth piezoelectric ceramic actuator 9, and a tenth piezoelectric ceramic actuator 10.

[0022] The first piezoelectric ceramic actuator 1 is located at one end of the coupling clamp 11, and the second piezoelectric ceramic actuator 2 is located at the other end of the coupling clamp 11; the third piezoelectric ceramic actuator 3, the fourth piezoelectric ceramic actuator 4, the fifth piezoelectric ceramic actuator 5 and the sixth piezoelectric ceramic actuator 6 are all located on one side of the coupling clamp 11, and the seventh piezoelectric ceramic actuator 7, the eighth piezoelectric ceramic actuator 8, the ninth piezoelectric ceramic actuator 9 and the tenth piezoelectric ceramic actuator 10 are all located on the other side of the coupling clamp 11.

[0023] like Figure 4 and Figure 5As shown, one end of the first piezoelectric ceramic actuator 1 is connected to one end of the coupling fixture 11, and the other end of the first piezoelectric ceramic actuator 1 is connected to the piezoelectric ceramic control console 14; one end of the second piezoelectric ceramic actuator 2 is connected to the other end of the coupling fixture 11, and the other end of the second piezoelectric ceramic actuator 2 is connected to the piezoelectric ceramic control console 14. One side of the coupling fixture 11 has two inclined surfaces, namely the first inclined surface and the second inclined surface, with an angle of 90° between the first and second inclined surfaces. The other side of the coupling fixture 11 has two inclined surfaces, namely the third inclined surface and the fourth inclined surface, with an angle of 90° between the third and fourth inclined surfaces. The normal plane forms an angle of 45° with the first, second, third, and fourth inclined surfaces, respectively, where the normal plane is the plane containing the X-axis and the Z-axis.

[0024] One end of the third piezoelectric ceramic actuator 3 and one end of the fourth piezoelectric ceramic actuator 4 are both connected to the first inclined surface, and the other ends of the third piezoelectric ceramic actuator 3 and the fourth piezoelectric ceramic actuator 4 are both connected to the piezoelectric ceramic control console 14. One end of the fifth piezoelectric ceramic actuator 5 and one end of the sixth piezoelectric ceramic actuator 6 are both connected to the second inclined surface, and the other ends of the fifth piezoelectric ceramic actuator 5 and the sixth piezoelectric ceramic actuator 6 are both connected to the piezoelectric ceramic control console 14.

[0025] One end of the seventh piezoelectric ceramic actuator 7 and one end of the eighth piezoelectric ceramic actuator 8 are both connected to the third inclined surface, and the other end of the seventh piezoelectric ceramic actuator 7 and the other end of the eighth piezoelectric ceramic actuator 8 are both connected to the piezoelectric ceramic control console 14; one end of the ninth piezoelectric ceramic actuator 9 and one end of the tenth piezoelectric ceramic actuator 10 are both connected to the fourth inclined surface, and the other end of the ninth piezoelectric ceramic actuator 9 and the other end of the tenth piezoelectric ceramic actuator 10 are both connected to the piezoelectric ceramic control console 14.

[0026] The first piezoelectric ceramic actuator 1 and the second piezoelectric ceramic actuator 2 jointly control the translational degree of freedom of the coupling fixture 11 on the Z-axis; the third piezoelectric ceramic actuator 3, the fourth piezoelectric ceramic actuator 4, the fifth piezoelectric ceramic actuator 5, the sixth piezoelectric ceramic actuator 6, the seventh piezoelectric ceramic actuator 7, the eighth piezoelectric ceramic actuator 8, the ninth piezoelectric ceramic actuator 9 and the tenth piezoelectric ceramic actuator 10 jointly control the translational degree of freedom of the coupling fixture 11 on the X-axis, the translational degree of freedom on the Y-axis, the rotational degree of freedom (pitch angle) about the X-axis, the rotational degree of freedom (yaw angle) about the Y-axis and the rotational degree of freedom (roll angle) about the Z-axis.

[0027] When a negative voltage is applied to the first piezoelectric ceramic actuator 1 and a positive voltage is applied to the second piezoelectric ceramic actuator 2, the coupling clamp 11 moves in the positive direction of the Z-axis; when a positive voltage is applied to the first piezoelectric ceramic actuator 1 and a negative voltage is applied to the second piezoelectric ceramic actuator 2, the coupling clamp 11 moves in the negative direction of the Z-axis.

[0028] When the third piezoelectric ceramic actuator 3, the fourth piezoelectric ceramic actuator 4, the fifth piezoelectric ceramic actuator 5, and the sixth piezoelectric ceramic actuator 6 are all subjected to positive voltages, and the seventh piezoelectric ceramic actuator 7, the eighth piezoelectric ceramic actuator 8, the ninth piezoelectric ceramic actuator 9, and the tenth piezoelectric ceramic actuator 10 are all subjected to negative voltages, the coupling clamp 11 moves in the positive direction of the X-axis.

[0029] When the third piezoelectric ceramic actuator 3, the fourth piezoelectric ceramic actuator 4, the fifth piezoelectric ceramic actuator 5, and the sixth piezoelectric ceramic actuator 6 are all subjected to negative voltages, and the seventh piezoelectric ceramic actuator 7, the eighth piezoelectric ceramic actuator 8, the ninth piezoelectric ceramic actuator 9, and the tenth piezoelectric ceramic actuator 10 are all subjected to positive voltages, the coupling clamp 11 moves in the negative direction of the X-axis.

[0030] When the third piezoelectric ceramic actuator 3, the fourth piezoelectric ceramic actuator 4, the seventh piezoelectric ceramic actuator 7, and the eighth piezoelectric ceramic actuator 8 are all subjected to negative voltages, and the fifth piezoelectric ceramic actuator 5, the sixth piezoelectric ceramic actuator 6, the ninth piezoelectric ceramic actuator 9, and the tenth piezoelectric ceramic actuator 10 are all subjected to positive voltages, the coupling clamp 11 moves in the positive direction of the Y coordinate axis.

[0031] When the third piezoelectric ceramic actuator 3, the fourth piezoelectric ceramic actuator 4, the seventh piezoelectric ceramic actuator 7, and the eighth piezoelectric ceramic actuator 8 are all subjected to positive voltages, and the fifth piezoelectric ceramic actuator 5, the sixth piezoelectric ceramic actuator 6, the ninth piezoelectric ceramic actuator 9, and the tenth piezoelectric ceramic actuator 10 are all subjected to negative voltages, the coupling clamp 11 moves in the negative direction of the Y-axis.

[0032] When the third piezoelectric ceramic actuator 3, the fifth piezoelectric ceramic actuator 5, the eighth piezoelectric ceramic actuator 8, and the tenth piezoelectric ceramic actuator 10 are all subjected to positive voltages, and the fourth piezoelectric ceramic actuator 4, the sixth piezoelectric ceramic actuator 6, the seventh piezoelectric ceramic actuator 7, and the ninth piezoelectric ceramic actuator 9 are all subjected to negative voltages, the coupling clamp 11 rotates clockwise around the Y-axis.

[0033] When the third piezoelectric ceramic actuator 3, the fifth piezoelectric ceramic actuator 5, the eighth piezoelectric ceramic actuator 8, and the tenth piezoelectric ceramic actuator 10 are all subjected to negative voltages, and the fourth piezoelectric ceramic actuator 4, the sixth piezoelectric ceramic actuator 6, the seventh piezoelectric ceramic actuator 7, and the ninth piezoelectric ceramic actuator 9 are all subjected to positive voltages, the coupling clamp 11 reverses around the Y-axis.

[0034] When the third piezoelectric ceramic actuator 3, the sixth piezoelectric ceramic actuator 6, the seventh piezoelectric ceramic actuator 7, and the tenth piezoelectric ceramic actuator 10 are all subjected to positive voltages, and the fourth piezoelectric ceramic actuator 4, the fifth piezoelectric ceramic actuator 5, the eighth piezoelectric ceramic actuator 8, and the ninth piezoelectric ceramic actuator 9 are all subjected to negative voltages, the coupling clamp 11 rotates clockwise around the X-axis.

[0035] When the third piezoelectric ceramic actuator 3, the sixth piezoelectric ceramic actuator 6, the seventh piezoelectric ceramic actuator 7, and the tenth piezoelectric ceramic actuator 10 are all subjected to negative voltages, and the fourth piezoelectric ceramic actuator 4, the fifth piezoelectric ceramic actuator 5, the eighth piezoelectric ceramic actuator 8, and the ninth piezoelectric ceramic actuator 9 are all subjected to positive voltages, the coupling clamp 11 reverses around the X-axis.

[0036] When the fifth piezoelectric ceramic actuator 5, the sixth piezoelectric ceramic actuator 6, the seventh piezoelectric ceramic actuator 7, and the eighth piezoelectric ceramic actuator 8 are all subjected to positive voltages, and the third piezoelectric ceramic actuator 3, the fourth piezoelectric ceramic actuator 4, the ninth piezoelectric ceramic actuator 9, and the tenth piezoelectric ceramic actuator 10 are all subjected to negative voltages, the coupling clamp 11 rotates clockwise around the Z-axis.

[0037] When the fifth piezoelectric ceramic actuator 5, the sixth piezoelectric ceramic actuator 6, the seventh piezoelectric ceramic actuator 7, and the eighth piezoelectric ceramic actuator 8 are all subjected to negative voltages, and the third piezoelectric ceramic actuator 3, the fourth piezoelectric ceramic actuator 4, the ninth piezoelectric ceramic actuator 9, and the tenth piezoelectric ceramic actuator 10 are all subjected to positive voltages, the coupling clamp 11 reverses around the Z-axis.

[0038] The combined force of the actuation force of the third piezoelectric ceramic actuator 3 and the fourth piezoelectric ceramic actuator 4 pushes one side of the coupling clamp 11 to move in the negative direction of the Y-axis; the combined force of the actuation force of the fifth piezoelectric ceramic actuator 5 and the sixth piezoelectric ceramic actuator 6 pushes one side of the coupling clamp 11 to move in the positive direction of the Y-axis; the combined force of the actuation force of the seventh piezoelectric ceramic actuator 7 and the eighth piezoelectric ceramic actuator 8 pushes the other side of the coupling clamp 11 to move in the negative direction of the Y-axis; the combined force of the actuation force of the ninth piezoelectric ceramic actuator 9 and the tenth piezoelectric ceramic actuator 10 pushes the other side of the coupling clamp 11 to move in the positive direction of the Y-axis.

[0039] The combined force of the actuation force of the third piezoelectric ceramic actuator 3 and the fifth piezoelectric ceramic actuator 5 pushes one end of the coupling clamp 11 to move in the positive direction of the X-axis; the combined force of the actuation force of the seventh piezoelectric ceramic actuator 7 and the ninth piezoelectric ceramic actuator 9 pushes one end of the coupling clamp 11 to move in the negative direction of the X-axis; the combined force of the actuation force of the fourth piezoelectric ceramic actuator 4 and the sixth piezoelectric ceramic actuator 6 pushes the other end of the coupling clamp 11 to move in the positive direction of the X-axis; the combined force of the actuation force of the eighth piezoelectric ceramic actuator 8 and the tenth piezoelectric ceramic actuator 10 pushes the other end of the coupling clamp 11 to move in the negative direction of the X-axis.

[0040] The combined force of the actuation force of the fifth piezoelectric ceramic actuator 5 and the actuation force of the ninth piezoelectric ceramic actuator 9 pushes one end of the coupling clamp 11 to move in the positive direction of the Y-axis. The combined force of the actuation force of the third piezoelectric ceramic actuator 3 and the actuation force of the seventh piezoelectric ceramic actuator 7 pushes one end of the coupling clamp 11 to move in the positive direction of the Y-axis. The combined force of the actuation force of the sixth piezoelectric ceramic actuator 6 and the actuation force of the tenth piezoelectric ceramic actuator 10 pushes the other end of the coupling clamp 11 to move in the positive direction of the Y-axis. The combined force of the actuation force of the fourth piezoelectric ceramic actuator 4 and the actuation force of the eighth piezoelectric ceramic actuator 8 pushes the other end of the coupling clamp 11 to move in the positive direction of the Y-axis.

[0041] The first piezoelectric ceramic actuator 1 and the second piezoelectric ceramic actuator 2 are attached to the middle of the front and rear ends of the coupling clamp 11, with the actuators moving horizontally along the Z-axis. The third piezoelectric ceramic actuator 3 and the fourth piezoelectric ceramic actuator 4 are attached to the upper left side of the coupling clamp 11, with both equidistant from the centerline of the coupling clamp 11, and their actuators moving at a 45° angle downward relative to the horizontal plane. The fifth piezoelectric ceramic actuator 5 and the sixth piezoelectric ceramic actuator 6 are located at the lower left side of the coupling clamp 11, with the third piezoelectric ceramic actuator 3 and the fourth piezoelectric ceramic actuator 4 moving in a direction relative to the horizontal plane. The seventh piezoelectric ceramic actuator 7 and the eighth piezoelectric ceramic actuator 8 are located slightly above the right side of the coupling fixture 11. They are equidistant from the centerline of the coupling fixture 11 and their positions relative to the Z-axis coordinates are consistent with those of the third piezoelectric ceramic actuator 3 and the fourth piezoelectric ceramic actuator 4 on the left. The actuator's direction of motion is 45° downward relative to the horizontal plane. The ninth piezoelectric ceramic actuator 9 and the tenth piezoelectric ceramic actuator 10 are located slightly below the right side of the coupling fixture 11. The actuation direction of the seventh piezoelectric ceramic actuator 7 and the eighth piezoelectric ceramic actuator 8 is 45° upward relative to the horizontal plane.

[0042] Control schemes for each degree of freedom: Z-axis direction: The first piezoelectric ceramic actuator 1 and the second piezoelectric ceramic actuator 2 are actuated together. The control voltages of the first piezoelectric ceramic actuator 1 and the second piezoelectric ceramic actuator 2 are equal in magnitude and opposite in direction.

[0043] X-axis direction: The third piezoelectric ceramic actuator 3 to the tenth piezoelectric ceramic actuator 10 are jointly actuated, and all actuators have the same control voltage. In the left group, the third piezoelectric ceramic actuator 3 to the sixth piezoelectric ceramic actuator 6 are jointly actuated, and all actuators have the same control voltage. The control voltage directions of the third piezoelectric ceramic actuator 3 to the sixth piezoelectric ceramic actuator 6 are the same. In the right group, the actuation control voltage directions of the seventh piezoelectric ceramic actuator 7 to the tenth piezoelectric ceramic actuator 10 are the same, but the control voltages of the left and right groups are opposite. Y-axis direction: The third piezoelectric ceramic actuator 3 to the tenth piezoelectric ceramic actuator 10 are jointly actuated, and the control voltage of all actuators is equal. In the upper group, the control voltage direction of the third piezoelectric ceramic actuator 3, the fourth piezoelectric ceramic actuator 4, the seventh piezoelectric ceramic actuator 7, and the eighth piezoelectric ceramic actuator 8 is the same; in the lower group, the control voltage direction of the fifth piezoelectric ceramic actuator 5, the sixth piezoelectric ceramic actuator 6, the ninth piezoelectric ceramic actuator 9, and the tenth piezoelectric ceramic actuator 10 is the same, but the control voltage of the upper group and the lower group are opposite. Yaw angle direction: The third piezoelectric ceramic actuator 3 to the tenth piezoelectric ceramic actuator 10 are jointly actuated, and the control voltage of all actuators is equal. In Group I, the control voltage directions of the third piezoelectric ceramic actuator 3, the fifth piezoelectric ceramic actuator 5, the eighth piezoelectric ceramic actuator 8, and the tenth piezoelectric ceramic actuator 10 are the same; in Group II, the control voltage directions of the fourth piezoelectric ceramic actuator 4, the sixth piezoelectric ceramic actuator 6, the seventh piezoelectric ceramic actuator 7, and the ninth piezoelectric ceramic actuator 9 are the same, but the control voltages of Group I and Group II are opposite. Pitch angle direction: The third piezoelectric ceramic actuator 3 to the tenth piezoelectric ceramic actuator 10 are jointly actuated, and the control voltage of all actuators is equal. In group III, the control voltage directions of the third piezoelectric ceramic actuator 3, the sixth piezoelectric ceramic actuator 6, the seventh piezoelectric ceramic actuator 7, and the tenth piezoelectric ceramic actuator 10 are the same. In group IV, the control voltage directions of the fourth piezoelectric ceramic actuator 4, the fifth piezoelectric ceramic actuator 5, the eighth piezoelectric ceramic actuator 8, and the ninth piezoelectric ceramic actuator 9 are the same, but the control voltages of group III and group IV are opposite. Roll angle direction: The third piezoelectric ceramic actuator 3 to the tenth piezoelectric ceramic actuator 10 are jointly actuated, and the control voltage of all actuators is equal. In group V, the control voltage direction of the third piezoelectric ceramic actuator 3, the fourth piezoelectric ceramic actuator 4, the ninth piezoelectric ceramic actuator 9, and the first piezoelectric ceramic actuator 10 is the same. In group VI, the control voltage direction of the fifth piezoelectric ceramic actuator 5, the sixth piezoelectric ceramic actuator 6, the seventh piezoelectric ceramic actuator 7, and the eighth piezoelectric ceramic actuator 8 is the same, but the control voltage of group V and group VI are opposite.

[0044] like Figure 6 As shown, the piezoelectric control circuit includes a battery, a boost module, a digital-to-analog converter (DAC), a PI-controlled high-voltage amplifier, a capacitive sensor, and an ARMPID controller. The battery provides a 3.7V power supply to the boost module, which boosts the voltage to 50V. The capacitive sensor collects the voltage of the piezoelectric ceramic actuator. The ARMPID controller provides feedback control to the DAC based on the piezoelectric ceramic voltage, allowing the DAC to correct or compensate for the voltage output of the boost module before converting it into a digital signal. The PI-controlled high-voltage amplifier uses the digital signal to perform PI control on the piezoelectric ceramic, achieving precise voltage control. The piezoelectric ceramic control circuit design uses a 3.7V lithium battery for driving, but a single 3.7V battery cannot directly drive the piezoelectric ceramic to achieve 0.5μm accuracy and 2μm stroke. Therefore, a DC-DC boost to 40–60V followed by precise control with an 18-bit DAC and closed-loop feedback is sufficient to meet the requirements. The control circuit includes an ARM control chip, a DA digital-to-analog converter chip, a PA power amplifier chip, and a PI compensation proportional-integral compensation circuit. The PI compensation circuit can ensure that the actuation accuracy of the piezoelectric ceramic reaches 0.5μm.

[0045] This invention utilizes multiple piezoelectric ceramic actuators to precisely control the position of the coupling clamp 11 in each degree of freedom. Compared to current fiber optic array units that cannot be finely adjusted, the technical solution provided by this invention significantly reduces coupling difficulty and is more conducive to automated coupling, thereby greatly saving time and costs. In long-term application, if the fixed fiber optic array unit drifts due to stress release or other reasons, the fiber optic array unit can be recoupled to maximum power by adjusting the corresponding piezoelectric ceramic actuators, thus greatly improving long-term reliability.

[0046] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the concept and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable fiber optic array unit based on piezoelectric ceramic displacement control, characterized in that, include: Coupling clamp (11) is used to fix the fiber array (12); Multiple piezoelectric ceramic actuators are connected to the coupling fixture (11) to control the six degrees of freedom of the coupling fixture (11); The plurality of piezoelectric ceramic actuators are a first piezoelectric ceramic actuator (1), a second piezoelectric ceramic actuator (2), a third piezoelectric ceramic actuator (3), a fourth piezoelectric ceramic actuator (4), a fifth piezoelectric ceramic actuator (5), a sixth piezoelectric ceramic actuator (6), a seventh piezoelectric ceramic actuator (7), an eighth piezoelectric ceramic actuator (8), a ninth piezoelectric ceramic actuator (9), and a tenth piezoelectric ceramic actuator (10); The first piezoelectric ceramic actuator (1) and the second piezoelectric ceramic actuator (2) jointly control the translational degree of freedom of the coupling fixture (11) on the Z-axis; The third piezoelectric ceramic actuator (3), the fourth piezoelectric ceramic actuator (4), the fifth piezoelectric ceramic actuator (5), the sixth piezoelectric ceramic actuator (6), the seventh piezoelectric ceramic actuator (7), the eighth piezoelectric ceramic actuator (8), the ninth piezoelectric ceramic actuator (9), and the tenth piezoelectric ceramic actuator (10) jointly control the coupling fixture (11) in terms of translational degree of freedom on the X-axis, translational degree of freedom on the Y-axis, rotational degree of freedom around the X-axis, rotational degree of freedom around the Y-axis, and rotational degree of freedom around the Z-axis. The first piezoelectric ceramic actuator (1) is located at one end of the coupling clamp (11), and the second piezoelectric ceramic actuator (2) is located at the other end of the coupling clamp (11); The third piezoelectric ceramic actuator (3), the fourth piezoelectric ceramic actuator (4), the fifth piezoelectric ceramic actuator (5), and the sixth piezoelectric ceramic actuator (6) are all located on one side of the coupling fixture (11), and the seventh piezoelectric ceramic actuator (7), the eighth piezoelectric ceramic actuator (8), the ninth piezoelectric ceramic actuator (9), and the tenth piezoelectric ceramic actuator (10) are all located on the other side of the coupling fixture (11). The coupling fixture (11) has two inclined surfaces on one side, namely the first inclined surface and the second inclined surface, with an angle of 90° between the first inclined surface and the second inclined surface. The coupling fixture (11) has two inclined surfaces on the other side, namely the third inclined surface and the fourth inclined surface, with an angle of 90° between the third inclined surface and the fourth inclined surface. The normal plane has an angle of 45° with the first inclined surface, the second inclined surface, the third inclined surface and the fourth inclined surface, respectively. The normal plane is the plane containing the X coordinate axis and the Z coordinate axis. One end of the third piezoelectric ceramic actuator (3) and one end of the fourth piezoelectric ceramic actuator (4) are both connected to the first inclined surface, and the other end of the third piezoelectric ceramic actuator (3) and the other end of the fourth piezoelectric ceramic actuator (4) are both connected to the piezoelectric ceramic control console (14); one end of the fifth piezoelectric ceramic actuator (5) and one end of the sixth piezoelectric ceramic actuator (6) are both connected to the second inclined surface, and the other end of the fifth piezoelectric ceramic actuator (5) and the other end of the sixth piezoelectric ceramic actuator (6) are both connected to the piezoelectric ceramic control console (14); One end of the seventh piezoelectric ceramic actuator (7) and one end of the eighth piezoelectric ceramic actuator (8) are both connected to the third inclined plane, and the other end of the seventh piezoelectric ceramic actuator (7) and the other end of the eighth piezoelectric ceramic actuator (8) are both connected to the piezoelectric ceramic control console (14); one end of the ninth piezoelectric ceramic actuator (9) and one end of the tenth piezoelectric ceramic actuator (10) are both connected to the fourth inclined plane, and the other end of the ninth piezoelectric ceramic actuator (9) and the other end of the tenth piezoelectric ceramic actuator (10) are both connected to the piezoelectric ceramic control console (14).

2. The adjustable fiber optic array unit based on piezoelectric ceramic displacement control according to claim 1, characterized in that, When the first piezoelectric ceramic actuator (1) is subjected to a negative voltage and the second piezoelectric ceramic actuator (2) is subjected to a positive voltage, the coupling clamp (11) moves in the positive direction of the Z-axis; when the first piezoelectric ceramic actuator (1) is subjected to a positive voltage and the second piezoelectric ceramic actuator (2) is subjected to a negative voltage, the coupling clamp (11) moves in the negative direction of the Z-axis.

3. The adjustable fiber optic array unit based on piezoelectric ceramic displacement control according to claim 1, characterized in that, When the third piezoelectric ceramic actuator (3), the fourth piezoelectric ceramic actuator (4), the fifth piezoelectric ceramic actuator (5) and the sixth piezoelectric ceramic actuator (6) are all subjected to positive voltage, and the seventh piezoelectric ceramic actuator (7), the eighth piezoelectric ceramic actuator (8), the ninth piezoelectric ceramic actuator (9) and the tenth piezoelectric ceramic actuator (10) are all subjected to negative voltage, the coupling clamp (11) moves in the positive direction of the X coordinate axis; When the third piezoelectric ceramic actuator (3), the fourth piezoelectric ceramic actuator (4), the fifth piezoelectric ceramic actuator (5) and the sixth piezoelectric ceramic actuator (6) are all subjected to negative voltage, and the seventh piezoelectric ceramic actuator (7), the eighth piezoelectric ceramic actuator (8), the ninth piezoelectric ceramic actuator (9) and the tenth piezoelectric ceramic actuator (10) are all subjected to positive voltage, the coupling clamp (11) moves in the negative direction of the X coordinate axis.

4. The adjustable fiber optic array unit based on piezoelectric ceramic displacement control according to claim 1, characterized in that, When the third piezoelectric ceramic actuator (3), the fourth piezoelectric ceramic actuator (4), the seventh piezoelectric ceramic actuator (7) and the eighth piezoelectric ceramic actuator (8) are all subjected to negative voltage, and the fifth piezoelectric ceramic actuator (5), the sixth piezoelectric ceramic actuator (6), the ninth piezoelectric ceramic actuator (9) and the tenth piezoelectric ceramic actuator (10) are all subjected to positive voltage, the coupling clamp (11) moves in the positive direction of the Y coordinate axis; When the third piezoelectric ceramic actuator (3), the fourth piezoelectric ceramic actuator (4), the seventh piezoelectric ceramic actuator (7), and the eighth piezoelectric ceramic actuator (8) are all subjected to positive voltages, and the fifth piezoelectric ceramic actuator (5), the sixth piezoelectric ceramic actuator (6), the ninth piezoelectric ceramic actuator (9), and the tenth piezoelectric ceramic actuator (10) are all subjected to negative voltages, the coupling clamp (11) moves in the negative direction of the Y coordinate axis.

5. The adjustable fiber optic array unit based on piezoelectric ceramic displacement control according to claim 1, characterized in that, When the third piezoelectric ceramic actuator (3), the fifth piezoelectric ceramic actuator (5), the eighth piezoelectric ceramic actuator (8) and the tenth piezoelectric ceramic actuator (10) are all subjected to positive voltage, and the fourth piezoelectric ceramic actuator (4), the sixth piezoelectric ceramic actuator (6), the seventh piezoelectric ceramic actuator (7) and the ninth piezoelectric ceramic actuator (9) are all subjected to negative voltage, the coupling clamp (11) rotates clockwise around the Y coordinate axis; When the third piezoelectric ceramic actuator (3), the fifth piezoelectric ceramic actuator (5), the eighth piezoelectric ceramic actuator (8) and the tenth piezoelectric ceramic actuator (10) are all subjected to negative voltage, and the fourth piezoelectric ceramic actuator (4), the sixth piezoelectric ceramic actuator (6), the seventh piezoelectric ceramic actuator (7) and the ninth piezoelectric ceramic actuator (9) are all subjected to positive voltage, the coupling clamp (11) rotates around the Y coordinate axis.

6. The adjustable fiber optic array unit based on piezoelectric ceramic displacement control according to claim 1, characterized in that, When the third piezoelectric ceramic actuator (3), the sixth piezoelectric ceramic actuator (6), the seventh piezoelectric ceramic actuator (7) and the tenth piezoelectric ceramic actuator (10) are all subjected to positive voltage, and the fourth piezoelectric ceramic actuator (4), the fifth piezoelectric ceramic actuator (5), the eighth piezoelectric ceramic actuator (8) and the ninth piezoelectric ceramic actuator (9) are all subjected to negative voltage, the coupling clamp (11) rotates clockwise around the X coordinate axis; When the third piezoelectric ceramic actuator (3), the sixth piezoelectric ceramic actuator (6), the seventh piezoelectric ceramic actuator (7) and the tenth piezoelectric ceramic actuator (10) are all subjected to negative voltage, and the fourth piezoelectric ceramic actuator (4), the fifth piezoelectric ceramic actuator (5), the eighth piezoelectric ceramic actuator (8) and the ninth piezoelectric ceramic actuator (9) are all subjected to positive voltage, the coupling clamp (11) rotates around the X coordinate axis.

7. The adjustable fiber optic array unit based on piezoelectric ceramic displacement control according to claim 1, characterized in that, When the fifth piezoelectric ceramic actuator (5), the sixth piezoelectric ceramic actuator (6), the seventh piezoelectric ceramic actuator (7), and the eighth piezoelectric ceramic actuator (8) are all subjected to positive voltages, and the third piezoelectric ceramic actuator (3), the fourth piezoelectric ceramic actuator (4), the ninth piezoelectric ceramic actuator (9), and the tenth piezoelectric ceramic actuator (10) are all subjected to negative voltages, the coupling clamp (11) rotates clockwise around the Z-axis. When the fifth piezoelectric ceramic actuator (5), the sixth piezoelectric ceramic actuator (6), the seventh piezoelectric ceramic actuator (7) and the eighth piezoelectric ceramic actuator (8) are all subjected to negative voltage, and the third piezoelectric ceramic actuator (3), the fourth piezoelectric ceramic actuator (4), the ninth piezoelectric ceramic actuator (9) and the tenth piezoelectric ceramic actuator (10) are all subjected to positive voltage, the coupling clamp (11) rotates around the Z coordinate axis.

8. The adjustable fiber optic array unit based on piezoelectric ceramic displacement control according to claim 1, characterized in that, The combined force of the actuation force of the third piezoelectric ceramic actuator (3) and the actuation force of the fourth piezoelectric ceramic actuator (4) pushes one side of the coupling clamp (11) to move in the negative direction of the Y-axis; the combined force of the actuation force of the fifth piezoelectric ceramic actuator (5) and the actuation force of the sixth piezoelectric ceramic actuator (6) pushes one side of the coupling clamp (11) to move in the positive direction of the Y-axis; the combined force of the actuation force of the seventh piezoelectric ceramic actuator (7) and the actuation force of the eighth piezoelectric ceramic actuator (8) pushes the other side of the coupling clamp (11) to move in the negative direction of the Y-axis; the combined force of the actuation force of the ninth piezoelectric ceramic actuator (9) and the actuation force of the tenth piezoelectric ceramic actuator (10) pushes the other side of the coupling clamp (11) to move in the positive direction of the Y-axis; The combined force of the actuation force of the third piezoelectric ceramic actuator (3) and the actuation force of the fifth piezoelectric ceramic actuator (5) pushes one end of the coupling clamp (11) to move in the positive direction of the X-axis; the combined force of the actuation force of the seventh piezoelectric ceramic actuator (7) and the actuation force of the ninth piezoelectric ceramic actuator (9) pushes one end of the coupling clamp (11) to move in the negative direction of the X-axis; the combined force of the actuation force of the fourth piezoelectric ceramic actuator (4) and the actuation force of the sixth piezoelectric ceramic actuator (6) pushes the other end of the coupling clamp (11) to move in the positive direction of the X-axis; the combined force of the actuation force of the eighth piezoelectric ceramic actuator (8) and the actuation force of the tenth piezoelectric ceramic actuator (10) pushes the other end of the coupling clamp (11) to move in the negative direction of the X-axis; The combined force of the actuation force of the fifth piezoelectric ceramic actuator (5) and the actuation force of the ninth piezoelectric ceramic actuator (9) pushes one end of the coupling clamp (11) to move in the positive direction of the Y-axis. The combined force of the actuation force of the third piezoelectric ceramic actuator (3) and the actuation force of the seventh piezoelectric ceramic actuator (7) pushes one end of the coupling clamp (11) to move in the positive direction of the Y-axis. The combined force of the actuation force of the sixth piezoelectric ceramic actuator (6) and the actuation force of the tenth piezoelectric ceramic actuator (10) pushes the other end of the coupling clamp (11) to move in the positive direction of the Y-axis. The combined force of the actuation force of the fourth piezoelectric ceramic actuator (4) and the actuation force of the eighth piezoelectric ceramic actuator (8) pushes the other end of the coupling clamp (11) to move in the positive direction of the Y-axis.

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