Geometric parameter adjusting device, performance adjusting device and photonic crystal fiber

Abstract

The disclosure provides a geometry parameter adjusting device, a performance adjusting device and a photonic crystal fiber, and relates to the technical field of photonic crystal fibers. The geometry parameter adjusting device comprises one or both of a pressure adjusting mechanism sleeved outside the photonic crystal fiber and a temperature adjusting mechanism connected with the photonic crystal fiber. The pressure adjusting mechanism is used for adjusting the geometry parameter in the photonic crystal fiber through pressure. The temperature adjusting mechanism is used for adjusting the geometry parameter in the photonic crystal fiber through temperature. The embodiment of the disclosure can realize the geometry parameter adjustment and the polarization performance adjustment of the photonic crystal fiber.

Description

Technical Field

[0001] This disclosure relates to the field of photonic crystal fiber technology, and in particular to a geometric structure parameter adjustment device, a performance adjustment device, and a photonic crystal fiber. Background Technology

[0002] Photonic crystal fiber (PCF) polarization filters are key components in optical fiber communication systems. They achieve filtering functions by controlling the polarization state of optical signals and are widely used in optical signal processing, optical sensing, and other scenarios.

[0003] The core of existing PCF polarization filters is a photonic crystal fiber with fixed geometric parameters. Its optical properties (such as effective refractive index and polarization loss) are determined by the geometric parameters (air hole diameter, air hole spacing, etc.) during manufacturing. During the commissioning of PCF polarization filters, the corresponding geometric parameters of the PCF need to be pre-designed through finite element simulation (FEM), or the performance can be adjusted by physically replacing PCFs with different geometric parameters.

[0004] Because the geometric parameters of existing PCF polarization filters are fixed, their optical characteristics cannot be dynamically adjusted after manufacturing, making it difficult to adapt to dynamic changes in complex environments (such as temperature fluctuations and pressure fluctuations). At the same time, when adjusting performance using FEM simulation design or physical replacement methods, a large number of iterative calculations or repeated disassembly and assembly are required, which is cumbersome, time-consuming, and has low debugging efficiency. Therefore, the performance adjustment methods of existing technologies lack real-time monitoring and feedback mechanisms, and cannot guarantee the long-term stability of PCF polarization filter performance. Utility Model Content

[0005] This disclosure proposes a geometric structure parameter adjustment device, a performance adjustment device, and a corresponding technical solution for a photonic crystal fiber.

[0006] According to one aspect of this disclosure, a geometrical parameter adjustment device is provided, comprising: one or both of a pressure adjustment mechanism sleeved on the outside of a photonic crystal fiber and a temperature adjustment mechanism connected to the photonic crystal fiber; wherein the pressure adjustment mechanism is used to adjust the geometrical parameters within the photonic crystal fiber by pressure; and the temperature adjustment mechanism is used to adjust the geometrical parameters within the photonic crystal fiber by temperature.

[0007] Preferably, the photonic crystal fiber includes: a perfectly matched layer, a background material disposed inside the perfectly matched layer, and a plurality of air holes of different diameters disposed within the background material and an optical fiber core.

[0008] Preferably, the multiple air holes of different diameters disposed in the background material inside the photonic crystal fiber include at least: multiple first air holes corresponding to a first diameter and multiple second air holes corresponding to a second diameter.

[0009] Preferably, the background material on the inner side of the photonic crystal fiber is configured as arsenic trisulfide.

[0010] Preferably, the two ends of the photonic crystal fiber have a first connector for connecting to the input light emitting mechanism and a second connector for connecting to the output light receiving mechanism.

[0011] Preferably, the temperature regulating mechanism is sleeved at a set distance from the pressure regulating mechanism. x The temperature regulating mechanism is located on the outside of the photonic crystal fiber; or, the temperature regulating mechanism is connected to multiple air holes of different diameters in the photonic crystal fiber via connecting tubes.

[0012] Preferably, the pressure adjustment mechanism and the temperature adjustment mechanism are configured as an integrated pressure and temperature adjustment mechanism, comprising: an airbag, a photonic crystal fiber accommodating space on one side of the airbag, a limiting shell on the other side of the airbag that restricts the outward movement of the airbag, and an air source connected to the airbag via a connecting pipe; wherein, the air source is used to fill the airbag with gas corresponding to a set temperature, thereby adjusting the geometric parameters within the photonic crystal fiber through pressure and temperature.

[0013] Preferably, the geometric parameter adjustment device further includes: a controller connected to one or both of the pressure adjustment mechanism and the temperature adjustment mechanism; wherein the controller is used to control the pressure applied to the photonic crystal fiber by the pressure adjustment mechanism and / or control the temperature applied to the photonic crystal fiber by the pressure adjustment mechanism.

[0014] Preferably, the geometric structure parameter adjustment device further includes: a deformation sensor disposed on the pressure adjustment mechanism; the deformation sensor is connected to the controller and is used to detect the deformation of the pressure adjustment mechanism; wherein, the controller is used to control the pressure adjustment mechanism to reach the preset deformation according to the deformation and the preset deformation, so as to adjust the geometric structure parameters in the photonic crystal fiber.

[0015] Preferably, the pressure adjustment mechanism is configured as a piezoelectric ceramic sheet; the deformation sensor is configured as at least one sheet-like strain sensor between the inner side of the piezoelectric ceramic sheet and the outer side of the photonic crystal fiber.

[0016] Preferably, a first analog-to-digital conversion circuit is configured between the deformation sensor disposed on the pressure regulating mechanism and the controller; wherein, the first analog-to-digital conversion circuit is used to convert the analog quantity corresponding to the deformation detected by the deformation sensor into a digital quantity.

[0017] Preferably, a digital-to-analog conversion circuit is further configured between the piezoelectric ceramic sheet corresponding to the pressure adjustment mechanism and the controller; wherein, the digital-to-analog conversion circuit is used to convert the digital quantities corresponding to the driving voltages of different frequencies output by the controller into analog quantities, so as to drive the pressure adjustment mechanism to apply pressure to the photonic crystal fiber.

[0018] Preferably, the geometric structure parameter adjustment device further includes: a temperature sensor disposed on the temperature adjustment mechanism; the temperature sensor is connected to the controller and is used to detect the temperature of the temperature adjustment mechanism; wherein, the controller is used to control the pressure adjustment mechanism to reach the preset temperature according to the temperature and the preset temperature, so as to adjust the geometric structure parameters in the photonic crystal fiber.

[0019] Preferably, the temperature regulating mechanism is configured as a heating element or a heating fan.

[0020] Preferably, a second analog-to-digital converter circuit is configured between the temperature sensor disposed on the temperature adjustment mechanism and the controller; wherein, the second analog-to-digital converter circuit is used to convert the analog quantity corresponding to the temperature detected by the temperature sensor into a digital quantity.

[0021] Preferably, a pulse width modulator is configured between the temperature sensor disposed on the temperature adjustment mechanism and the controller; wherein, the pulse width modulator is used to modulate the driving voltage output by the controller to a set pulse width to drive the temperature adjustment mechanism to heat the photonic crystal fiber.

[0022] Preferably, the controller includes: a main control chip and a human-machine interface unit connected to the main control chip; wherein the human-machine interface unit is used to input and / or display a preset temperature corresponding to the temperature adjustment mechanism and / or a preset deformation corresponding to the pressure adjustment mechanism.

[0023] Preferably, the human-machine interaction unit of the controller includes one or both of an input mechanism and a display mechanism; wherein the input mechanism is used to input a preset temperature corresponding to the temperature adjustment mechanism and / or a preset deformation corresponding to the pressure adjustment mechanism; and the display mechanism is used to display the preset temperature corresponding to the temperature adjustment mechanism and / or the preset deformation corresponding to the pressure adjustment mechanism.

[0024] According to one aspect of this disclosure, a performance adjustment device is provided, comprising: a geometric parameter adjustment device as described above; and a photoelectric detection circuit connected to a second connector of the photonic crystal fiber; wherein the photoelectric detection circuit is used to detect the output light of the input light passing through the photonic crystal fiber.

[0025] Preferably, the electrical detection circuit includes a photodetector; wherein the photodetector is used to detect the output light of the photonic crystal fiber after the input light has passed through the geometrically adjusted parameters.

[0026] Preferably, the electrical detection circuit is also connected to the controller; wherein the display mechanism corresponding to the controller is used to compare and display the waveforms of the output light with different geometric parameters.

[0027] Preferably, the electrical detection circuit further includes: an amplification circuit connected to the photodetector, wherein the photodetector is used to detect the signal amplification output light of the photonic crystal fiber after the input light has passed through the photonic crystal fiber with adjusted geometric parameters; the amplification circuit is used to amplify the signal of the signal amplification output light to obtain the output light of the input light after passing through the photonic crystal fiber.

[0028] Preferably, the electrical detection circuit further includes a filter circuit connected to the amplification circuit; wherein the filter circuit is used to filter the output light. Preferably, the electrical detection circuit further includes a third analog-to-digital converter circuit connected to the amplification circuit or the filtering circuit; wherein the third analog-to-digital converter circuit is used to convert the analog quantity corresponding to the amplified output light or the filtered output light into a digital quantity.

[0029] According to one aspect of this disclosure, a photonic crystal fiber is provided that uses the geometric parameter adjustment device described above to adjust the geometric parameters of the photonic crystal fiber.

[0030] According to one aspect of this disclosure, a photonic crystal fiber is provided that uses the performance adjustment device described above to adjust the polarization performance of the photonic crystal fiber.

[0031] In this disclosure, a geometric structure parameter adjustment device, a performance adjustment device, and a corresponding technical solution for photonic crystal fiber are proposed to solve at least one of the technical problems in the current method of adjusting performance by FEM simulation design or physical replacement, which requires a large number of iterative calculations or repeated disassembly and assembly, is cumbersome, time-consuming, has low debugging efficiency, lacks real-time monitoring and feedback mechanisms, and cannot guarantee the long-term stability of PCF polarization filtering performance.

[0032] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0033] Other features and aspects of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the specification, serve to illustrate the technical solutions of this disclosure.

[0035] Figure 1 A schematic diagram of the structure corresponding to the geometric parameter adjustment device according to an embodiment of the present disclosure is shown. Figure 2 A schematic cross-sectional view of the structure of several photonic crystal fibers according to embodiments of the present disclosure is shown. Figure 3 This diagram shows a cross-sectional view of the integrated structure corresponding to the pressure regulating mechanism or temperature regulating mechanism or the pressure regulating mechanism and temperature regulating mechanism according to an embodiment of the present disclosure. Figure 4 A schematic diagram of the geometric parameter adjustment device and performance adjustment device according to embodiments of the present disclosure is shown. Figure 5 A schematic diagram of the electrical connections corresponding to the geometric parameter adjustment device and the performance adjustment device according to embodiments of the present disclosure is shown. Figure 6 A circuit diagram corresponding to the controller and its peripheral circuits according to an embodiment of the present disclosure is shown. Figure 7 A circuit schematic diagram corresponding to an amplifier circuit according to an embodiment of the present disclosure is shown. Detailed Implementation

[0036] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0037] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0038] In this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0039] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.

[0040] Figure 1 A schematic diagram of the structure corresponding to the geometric parameter adjustment device according to an embodiment of the present disclosure is shown. Figure 2 A schematic cross-sectional view of several photonic crystal fibers according to embodiments of the present disclosure is shown. Figure 1 and Figure 2 As shown, the geometric structure parameter adjustment device includes one or both of the following: a pressure adjustment mechanism 2 sleeved on the outside of the photonic crystal fiber 1 and a temperature adjustment mechanism 3 connected to the photonic crystal fiber 1; wherein, the pressure adjustment mechanism 2 is used to adjust the geometric structure parameters within the photonic crystal fiber 1 by pressure; and the temperature adjustment mechanism 3 is used to adjust the geometric structure parameters within the photonic crystal fiber 1 by temperature. This addresses at least one of the technical problems currently encountered when adjusting performance using FEM simulation design or physical replacement methods, which require extensive iterative calculations or repeated disassembly and reassembly, resulting in a cumbersome and time-consuming process, low debugging efficiency, lack of real-time monitoring and feedback mechanisms, and inability to guarantee the long-term stability of PCF polarization filtering performance.

[0041] In the embodiments of this disclosure and other possible embodiments, one or both of the pressure adjustment mechanism 2 sleeved on the outside of the photonic crystal fiber 1 and the temperature adjustment mechanism 3 connected to the photonic crystal fiber 1 are used to adjust the geometric parameters inside the photonic crystal fiber 1 by applying pressure and / or temperature to cause deformation of the internal geometry of the photonic crystal fiber 1 or by causing deformation due to thermal expansion and contraction.

[0042] In the embodiments of this disclosure and other possible embodiments, the geometric parameters within the photonic crystal fiber 1 include one or more of the following: multiple different diameter sizes corresponding to air holes and the spacing between air holes. By utilizing one or more of the pressure adjustment mechanism 2 sleeved on the outside of the photonic crystal fiber 1 and the temperature adjustment mechanism 3 connected to the photonic crystal fiber 1, the internal geometry of the photonic crystal fiber 1 is deformed by pressure and / or temperature, or deformed by thermal expansion and contraction, thereby adjusting one or more of the multiple different diameter sizes corresponding to air holes and the spacing between air holes within the photonic crystal fiber 1.

[0043] like Figure 2 As shown, the photonic crystal fiber 1 includes: a perfectly matched layer 11 (PML), a background material 12 disposed inside the perfectly matched layer 11, and multiple air holes (Air) of different diameters disposed within the background material 12, and an optical fiber core (dashed circle). The background material 12 inside the photonic crystal fiber 1 is configured as arsenic trisulfide (As2S3).

[0044] In the embodiments of this disclosure, the multiple air holes of different diameters disposed in the background material 12 inside the photonic crystal fiber 1 include at least: multiple first air holes 13 corresponding to a first diameter and multiple second air holes 14 corresponding to a second diameter.

[0045] In the embodiments of this disclosure, the two ends of the photonic crystal fiber 1 have a first connector 15 connected to the input light emitting mechanism and a second connector 16 connected to the output light receiving mechanism, respectively.

[0046] In embodiments of this disclosure and other possible embodiments, parameters d 1 , d 2 and Λ These represent the second diameter of the air hole corresponding to the second size in the photonic crystal fiber 1, the first diameter of the air hole corresponding to the first size which is larger than the second size, and the spacing between the air holes, respectively.

[0047] In embodiments of this disclosure and other possible embodiments, an optical fiber core is disposed at the center of the photonic crystal fiber 1. After removing the air holes corresponding to the four dashed lines near the optical fiber core, the remaining air holes form a three-ring hexagonal structure. Multiple ( ) in the innermost ring (first ring) of the bend-resistant PCF Figure 2 The first diameter of the largest first dimension (among six) d 2 The corresponding air holes confine light within the fiber core, thereby suppressing photonic crystal fiber 1 distortion caused by bending.

[0048] In embodiments of this disclosure and other possible embodiments, the second ring outside the first ring corresponding to the direction from the fiber core to the perfectly matched layers (PML) includes multiple ( Figure 2 There are fourteen air holes in the middle, and the third ring outside the second ring corresponding to the direction from the fiber core to the PML contains multiple ( Figure 2 There are sixteen air holes in the middle. The outermost ring, corresponding to the third ring in the PML direction, has several symmetrical air holes removed from both the top and bottom ends. Figure 2 The four air holes in the middle increase leakage of higher-order molds to a certain extent, maintaining the single-mode properties of the flexural PCF.

[0049] In the embodiments of this disclosure and other possible embodiments, the photonic crystal fiber 1 includes only two sizes (a first size and a second size) of circular air holes and a background material; the background material can be configured as arsenic trisulfide, which is distributed between the two sizes of circular air holes (a first size and a second size) and inside the PML, to facilitate the fabrication of the photonic crystal fiber 1.

[0050] In the embodiments disclosed herein, the temperature regulating mechanism 3 is sleeved at a set distance from the pressure regulating mechanism 2. x The photonic crystal fiber 1 is located on its outer side; or, the temperature regulating mechanism 3 is connected to multiple air holes of different diameters in the photonic crystal fiber 1 via a connecting pipe 31. Those skilled in the art can adjust the distance from the pressure regulating mechanism 2 according to actual needs. x Configure it.

[0051] In the embodiments of this disclosure and other possible embodiments, the pressure regulating mechanism and the temperature regulating mechanism may be configured as separate mechanisms, but the preferred technical solution is an integrated structure corresponding to the pressure regulating mechanism and the temperature regulating mechanism.

[0052] Figure 3 This diagram shows a cross-sectional view of the integrated structure corresponding to the pressure regulating mechanism or temperature regulating mechanism or the pressure regulating mechanism and temperature regulating mechanism according to embodiments of the present disclosure. Figure 3 As shown, the pressure adjustment mechanism 2 includes: an airbag 22, a photonic crystal fiber accommodating space 23 on one side of the airbag 22, and a limiting shell 21 on the other side of the airbag 22 to restrict the outward movement of the airbag 22; the airbag 22 is connected to an air source 27 via a connecting pipe 26. By controlling the air source 27 to inflate the airbag 22, the geometric parameters within the photonic crystal fiber 1 are adjusted through pressure.

[0053] In the embodiments disclosed herein and other possible embodiments, the temperature regulating mechanism 3 may also include: an airbag 22, a photonic crystal fiber accommodating space 23 on one side of the airbag 22, and a limiting shell 21 on the other side of the airbag 22 to restrict the outward movement of the airbag 22; the airbag 22 is connected to a gas source 27 via a connecting pipe 26. By controlling the gas source 27 to fill the airbag 22 with gas corresponding to a set temperature, the geometric parameters within the photonic crystal fiber 1 are adjusted by temperature.

[0054] In the embodiments of this disclosure, the pressure adjustment mechanism 2 and the temperature adjustment mechanism 3 are configured as an integrated pressure and temperature adjustment mechanism, including: an airbag 22, a photonic crystal fiber accommodating space 23 on one side of the airbag 22, a limiting shell 21 on the other side of the airbag 22 that restricts the outward movement of the airbag 22, and an air source 27 connected to the airbag 22 via a connecting pipe 26; wherein, the air source 27 is used to fill the airbag 22 with gas corresponding to a set temperature, thereby adjusting the geometric parameters of the photonic crystal fiber 1 through pressure and temperature.

[0055] In the embodiments of this disclosure and other possible embodiments, the pressure and temperature adjustment mechanisms, corresponding to an integrated structure, simultaneously regulate the pressure and temperature acting on the photonic crystal fiber 1. The pressure and temperature adjustment mechanism includes: an airbag 22, a photonic crystal fiber accommodating space 23 on one side of the airbag 22, and a limiting shell 21 on the other side of the airbag 22 to restrict its outward movement. The airbag 22 is connected to an air source 27 via a connecting pipe 26. By controlling the air source 27 to fill the airbag 22 with air at a set temperature, the geometric parameters within the photonic crystal fiber 1 are adjusted through pressure and temperature.

[0056] Figure 4 A schematic diagram of the geometric parameter adjustment device and performance adjustment device according to embodiments of the present disclosure is shown. Figure 5 A schematic diagram showing the electrical connections of the geometric parameter adjustment device and the performance adjustment device according to embodiments of the present disclosure is provided. Figure 4 and Figure 5 As shown in the embodiments of this disclosure, the geometric parameter adjustment device is characterized in that it further includes: a controller 6 connected to one or both of the pressure adjustment mechanism 2 and the temperature adjustment mechanism 3; wherein the controller 6 is used to control the pressure applied to the photonic crystal fiber 1 by the pressure adjustment mechanism 2 and / or control the temperature applied to the photonic crystal fiber 1 by the pressure adjustment mechanism 2.

[0057] In embodiments of this disclosure and other possible embodiments, the controller 6 may be configured as one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors (e.g., single-chip microcomputers), or other electronic components. For example, the controller may be configured as a single-chip microcomputer of the STM32 (TM32F103 / 030) series.

[0058] In an embodiment of this disclosure, the geometric structure parameter adjustment device further includes: a deformation sensor 5 disposed on the pressure adjustment mechanism 2; the deformation sensor 5 is connected to the controller 6 and is used to detect the deformation of the pressure adjustment mechanism 2; wherein, the controller 6 is used to control the pressure adjustment mechanism 2 to reach the preset deformation according to the deformation and the preset deformation, so as to adjust the geometric structure parameters in the photonic crystal fiber 1.

[0059] In embodiments of this disclosure and other possible embodiments, the pressure adjustment mechanism 2 is configured as a piezoelectric ceramic sheet; the deformation sensor 5 is configured as at least one sheet-like strain sensor between the inner side of the piezoelectric ceramic sheet and the outer side of the photonic crystal fiber 1.

[0060] In the embodiments of this disclosure, a first analog-to-digital conversion circuit 64 is configured between the deformation sensor 5 disposed on the pressure regulating mechanism 2 and the controller 6; wherein, the first analog-to-digital conversion circuit 64 is used to convert the analog quantity corresponding to the deformation detected by the deformation sensor 5 into a digital quantity.

[0061] In the embodiments of this disclosure, a digital-to-analog conversion circuit 66 is further configured between the piezoelectric ceramic sheet corresponding to the pressure adjustment mechanism 2 and the controller 6; wherein, the digital-to-analog conversion circuit 66 is used to convert the digital quantities corresponding to the driving voltages of different frequencies output by the controller 6 into analog quantities, so as to drive the pressure adjustment mechanism 2 to apply pressure to the photonic crystal fiber 1.

[0062] In embodiments of this disclosure, the geometric structure parameter adjustment device further includes: a temperature sensor 4 disposed on the temperature adjustment mechanism 3; the temperature sensor 4 is connected to the controller 6 and is used to detect the temperature of the temperature adjustment mechanism 3; wherein, the controller 6 is used to control the pressure adjustment mechanism 2 to reach the preset temperature according to the temperature and a preset temperature, so as to adjust the geometric structure parameters within the photonic crystal fiber 1. In embodiments of this disclosure, the temperature regulating mechanism 3 is configured as a heating element or a heating fan; and / or, a second analog-to-digital conversion circuit 65 is configured between the temperature sensor 4 disposed on the temperature regulating mechanism 3 and the controller 6; wherein, the second analog-to-digital conversion circuit 65 is used to convert the analog quantity corresponding to the temperature detected by the temperature sensor 4 into a digital quantity.

[0063] In the embodiments of this disclosure, a pulse width modulator 67 is configured between the temperature sensor 4 disposed on the temperature adjustment mechanism 3 and the controller 6; wherein, the pulse width modulator 67 is used to modulate the driving voltage output by the controller 6 to a set pulse width to drive the temperature adjustment mechanism 3 to heat the photonic crystal fiber 1.

[0064] In embodiments of this disclosure, the controller 6 includes: a main control chip 61 and a human-machine interface unit connected to the main control chip 61; wherein the human-machine interface unit is used to input and / or display a preset temperature corresponding to the temperature regulating mechanism 3 and / or a preset deformation corresponding to the pressure regulating mechanism 2. The main control chip 61 can be configured as an STM32 (TM32F103 / 030) series microcontroller.

[0065] In the embodiments of this disclosure, the human-machine interaction unit of the controller 6 includes one or both of an input mechanism 63 and a display mechanism 62; wherein, the input mechanism 63 is used to input the preset temperature corresponding to the temperature regulating mechanism 3 and / or the preset deformation corresponding to the pressure regulating mechanism 2; the display mechanism 62 is used to display the preset temperature corresponding to the temperature regulating mechanism 3 and / or the preset deformation corresponding to the pressure regulating mechanism 2.

[0066] In the embodiments of this disclosure and other possible embodiments, an inflation execution control mechanism 25 is provided on the connecting pipe 26. The inflation execution control mechanism 25 is connected to the controller 6. By controlling the inflation execution control mechanism 25, the gas source 27 is controlled to inflate the airbag 22, thereby adjusting the geometric parameters within the photonic crystal fiber 1 through pressure. Similarly, by controlling the inflation execution control mechanism 25, the gas source 27 is controlled to fill the airbag 22 with gas at a set temperature, thereby adjusting the geometric parameters within the photonic crystal fiber 1 through temperature. Alternatively, the inflation execution control mechanism 25 can also be controlled to fill the airbag 22 with gas at a set temperature, thereby adjusting the geometric parameters within the photonic crystal fiber 1 through pressure and temperature.

[0067] In embodiments of this disclosure and other possible embodiments, the inflation control mechanism 25 is configured as a valve or a solenoid valve. The valve or solenoid valve corresponding to the inflation control mechanism 25 is connected to the controller 6. By controlling the valve to open or the solenoid valve to open, the air source 27 is controlled to inflate the airbag 22, thereby adjusting the geometric parameters within the photonic crystal fiber 1 through pressure. Similarly, by controlling the valve to open or the solenoid valve to open, the air source 27 is controlled to fill the airbag 22 with gas at a set temperature, thereby adjusting the geometric parameters within the photonic crystal fiber 1 through temperature.

[0068] In embodiments of this disclosure and other possible embodiments, the input mechanism 63 may be configured as a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to, a home button, volume buttons, a start button, and a lock button.

[0069] In embodiments of this disclosure and other possible embodiments, the display mechanism 62 may be configured as a screen, which may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel.

[0070] In addition, this disclosure also proposes a performance adjustment device, including: the geometric parameter adjustment device as described above; and a photoelectric detection circuit 68 connected to the second connector 16 of the photonic crystal fiber 1; wherein the photoelectric detection circuit 68 is used to detect the output light of the input light passing through the photonic crystal fiber 1.

[0071] In an embodiment of this disclosure, the electrical detection circuit 68 includes a photodetector 681; wherein the photodetector 681 is used to detect the output light of the photonic crystal fiber 1 after the input light has passed through the geometrically adjusted parameters.

[0072] In embodiments of this disclosure, the electrical detection circuit 68 is also connected to a controller; wherein the display mechanism 62 corresponding to the controller is used to compare and display the waveforms of the output light with different geometric parameters.

[0073] In embodiments of this disclosure and other possible embodiments, the electrical detection circuit 68 further includes: an amplification circuit 682 connected to the photodetector 681, wherein the photodetector 681 is used to detect the signal amplification output light of the photonic crystal fiber 1 after the input light has passed through the photonic crystal fiber 1 with adjusted geometric structural parameters; the amplification circuit 682 is used to amplify the signal amplification output light to obtain the output light of the input light after passing through the photonic crystal fiber 1.

[0074] In embodiments of this disclosure and other possible embodiments, the electrical detection circuit 68 further includes a filter circuit 683 connected to the amplification circuit 682; wherein the filter circuit 683 is used to filter the output light. In embodiments of this disclosure and other possible embodiments, the electrical detection circuit 68 further includes: a third analog-to-digital converter circuit 684 connected to the amplification circuit 682 or the filtering circuit 683; wherein the third analog-to-digital converter circuit 684 is used to convert the analog quantity corresponding to the amplified output light or the filtered output light into a digital quantity.

[0075] This disclosure also proposes a photonic crystal fiber that uses the geometric parameter adjustment device described above to adjust the geometric parameters of the photonic crystal fiber.

[0076] This disclosure also proposes a photonic crystal fiber that uses the performance adjustment device described above to adjust the polarization performance of the photonic crystal fiber.

[0077] Figure 6 A circuit diagram corresponding to the controller and its peripheral circuits according to an embodiment of this disclosure is shown. Figure 6 As shown, the processor 6 is configured as a microcontroller, and the model of the microcontroller can be STC89751. The microcontroller CPU1 has 40 pins (pins 1-40). Pin 9 of the microcontroller CPU1 is connected to the power supply VCC through a filter capacitor C1, and pin 9 is also connected to ground GND through a first resistor R1. Pins 18 and 19 of the microcontroller CPU1 are connected to the two ends of a crystal oscillator Y1, and the two ends of the crystal oscillator Y1 are also connected to ground GND through a second capacitor C2 and a third capacitor C3, respectively. Pin 20 of the microcontroller CPU1 is connected to ground GND. Pin 40 of the microcontroller CPU1 is connected to the power supply VCC. The pressure regulating mechanism 2, the temperature regulating mechanism 3, the temperature sensor 4, the deformation sensor 5, the first analog-to-digital conversion circuit 64, the digital-to-analog conversion circuit 66, the pulse width modulator 67, the input mechanism 63, the display mechanism 62, and the third analog-to-digital conversion circuit 684 are connected to the remaining unused I / O (input / output) ports of the microcontroller CPU1.

[0078] Figure 7 A circuit schematic diagram corresponding to an amplifier circuit according to an embodiment of the present disclosure is shown. For example... Figure 7As shown, the amplifier circuit 682 can be configured as a programmable differential instrumentation amplifier circuit, including: a first-stage programmable differential instrumentation amplifier circuit and a second-stage programmable differential instrumentation amplifier circuit connected in sequence; wherein, the first-stage programmable differential instrumentation amplifier circuit includes: a first-stage chip; the second-stage programmable differential instrumentation amplifier circuit includes: a second-stage chip; the input terminal of the first-stage chip is provided with an RC high-pass filter circuit, and the first-stage chip and the second-stage chip are respectively connected to one end of a corresponding capacitor, and the other end of the corresponding capacitor is connected to analog ground AGND.

[0079] In embodiments of this disclosure and other possible embodiments, the first-stage chip can be configured as an AD8251 manufactured by Analog Devices (ADI), and the second-stage chip can be configured as an AD8253 manufactured by ADI. The AD8251 and AD8253 respectively constitute the first-stage programmable differential instrumentation amplifier circuit and the second-stage programmable differential instrumentation amplifier circuit. An RC high-pass filter circuit is first added before the first-stage programmable differential instrumentation amplifier circuit to filter out the DC bias in the induced voltage difference generated by the electrode array 1. Pin 1 of the first-stage chip is connected to the first voltage output terminal PGAO IN N of the voltage signal generated by the plurality of electrodes 1-1 through the fourteenth capacitor C14. Pin 1 of the first-stage chip is also connected to analog ground AGND through the fifteenth resistor R15. Pin 10 of the first-stage chip is connected to the second voltage output terminal PGAO IN P of the voltage signal generated by the plurality of electrodes 1-1 through the fifteenth capacitor C15. Pin 10 of the first-stage chip is also connected to analog ground AGND through the sixteenth resistor R16. Before pin 3 of the first-stage chip is connected to -5V, it is grounded through parallel capacitors C16 (ground 16) and C17 (ground 17). Before pin 8 of the first-stage chip is connected to +5V, it is grounded through parallel capacitors C18 (ground 18) and C19 (ground 19). Before pin 3 of the second-stage chip is connected to -5V, it is grounded through parallel capacitors C20 (ground 20) and C21 (ground 21). Before pin 8 of the second-stage chip is connected to +5V, it is grounded through parallel capacitors C22 (ground 22) and C23 (ground 23). Finally, pins 7 of the first-stage chip and the second-stage chip are respectively the set voltage (which can be grounded or configured to 5V) and the output light to be amplified. By amplifying the output light to be amplified, the output light of the input light is obtained after passing through the photonic crystal fiber 1.

[0080] It is understood that the various embodiments mentioned above in this disclosure can be combined with each other to form combined embodiments without violating the principle and logic. Due to space limitations, this disclosure will not elaborate further.

[0081] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A geometric structure parameter adjustment device, characterized in that, include: One or both of the pressure regulating mechanism (2) sleeved on the outside of the photonic crystal fiber (1) and the temperature regulating mechanism (3) connected to the photonic crystal fiber (1); The pressure adjustment mechanism (2) is used to adjust the geometric parameters within the photonic crystal fiber (1) by means of pressure; the temperature adjustment mechanism (3) is used to adjust the geometric parameters within the photonic crystal fiber (1) by means of temperature.

2. The geometric structure parameter adjustment device according to claim 1, characterized in that, The photonic crystal fiber (1) includes: a perfectly matched layer (11), a background material (12) disposed inside the perfectly matched layer (11), and multiple air holes of different diameters disposed within the background material (12) and an optical fiber core; and / or, The photonic crystal fiber (1) has multiple air holes of different diameters in the background material (12) inside, including at least a plurality of first air holes (13) corresponding to the first diameter and a plurality of second air holes (14) corresponding to the second diameter.

3. The geometric structure parameter adjustment device according to claim 1, characterized in that, The temperature regulating mechanism (3) is sleeved at a set distance from the pressure regulating mechanism (2). x The outer side of the photonic crystal fiber (1); or, The temperature regulating mechanism (3) is connected to multiple air holes of different diameters in the photonic crystal fiber (1) via a connecting pipe (31); or, The pressure adjustment mechanism (2) and the temperature adjustment mechanism (3) are configured as an integrated pressure and temperature adjustment mechanism, including: an airbag (22), a photonic crystal fiber accommodating space (23) on one side of the airbag (22), a limiting shell (21) on the other side of the airbag (22) that restricts the outward movement of the airbag (22), and a gas source (27) connected to the airbag (22) through a connecting pipe (26); wherein, the gas source (27) is used to fill the airbag (22) with gas corresponding to a set temperature, thereby adjusting the geometric parameters of the photonic crystal fiber (1) through pressure and temperature.

4. The geometric structure parameter adjustment device according to any one of claims 1-3, characterized in that, Also includes: A controller (6) connected to one or both of the pressure regulating mechanism (2) and the temperature regulating mechanism (3); The controller (6) is used to control the pressure applied to the photonic crystal fiber (1) by the pressure adjustment mechanism (2) and / or to control the temperature applied to the photonic crystal fiber (1) by the pressure adjustment mechanism (2).

5. The geometric structure parameter adjustment device according to claim 4, characterized in that, Also includes: A deformation sensor (5) is installed on the pressure regulating mechanism (2); the deformation sensor (5) is connected to the controller (6) and is used to detect the deformation of the pressure regulating mechanism (2); The controller (6) is used to control the pressure regulating mechanism (2) to achieve the preset deformation based on the deformation and the preset deformation.

6. The geometric structure parameter adjustment device according to claim 4, characterized in that, Also includes: A temperature sensor (4) is installed on the temperature regulating mechanism (3); the temperature sensor (4) is connected to the controller (6) and is used to detect the temperature of the temperature regulating mechanism (3); The controller (6) is used to control the pressure regulating mechanism (2) to reach the preset temperature according to the temperature and the preset temperature.

7. The geometric structure parameter adjustment device according to any one of claims 5 or 6, characterized in that, The controller (6) includes: a main control chip (61) and a human-machine interaction unit connected to the main control chip (61); The human-machine interaction unit is used to input and / or display the preset temperature corresponding to the temperature adjustment mechanism (3) and / or the preset deformation corresponding to the pressure adjustment mechanism (2).

8. A performance adjustment device, characterized in that, include: The geometric parameter adjustment device as described in any one of claims 1-7; and, A photoelectric detection circuit (68) is connected to the second connector (16) of the photonic crystal fiber (1); wherein the photoelectric detection circuit (68) is used to detect the output light of the input light after passing through the photonic crystal fiber (1).

9. The performance adjustment device according to claim 8, characterized in that, The electrical detection circuit (68) includes: a photodetector (681); wherein the photodetector (681) is used to detect the output light of the photonic crystal fiber (1) after the input light has passed through the geometrically adjusted structure parameters; and / or, The electrical detection circuit (68) is also connected to the controller; wherein the display mechanism (62) corresponding to the controller is used to compare and display the waveforms of the output light with different geometric parameters.

10. A photonic crystal fiber, characterized in that, include: The geometric parameter adjustment device as described in any one of claims 1-7 for adjusting the polarization performance of photonic crystal fibers and / or the performance adjustment device as described in any one of claims 8-9 for adjusting the polarization performance of photonic crystal fibers.

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