Up-down installation asymmetric integral type optical fiber interferometer support and design method thereof

Abstract

The invention discloses a vertically-mounted asymmetric integral type optical fiber interferometer support and a design method thereof, and belongs to the field of optical fiber optics, the vertically-mounted asymmetric integral type optical fiber interferometer support comprises an upper support ring body, a lower support ring body and an annular connecting plate, the upper support ring body comprises an upper ring plate and an upper cylinder, and the upper ring plate and the upper cylinder are coaxially arranged and are of an integral structure; the lower support ring body comprises a lower ring plate and a lower cylinder, and the lower ring plate and the lower cylinder are coaxially arranged and are of an integrated structure. The upper cylinder body and the lower cylinder body are coaxially arranged and are of an integrated structure, the upper cylinder body and the lower cylinder body form a connecting cylinder, and the annular connecting plate is arranged outside the connecting cylinder in a sleeving mode; the size of the upper annular plate is different from that of the lower annular plate, the size of the upper barrel is different from that of the lower barrel, the upper support annular body and the lower support annular body are of an asymmetric structure, the upper annular plate, the upper barrel and the annular connecting plate jointly define an upper winding groove, and the lower annular plate, the lower barrel and the annular connecting plate jointly define a lower winding groove. Therefore, the vibration sensitivity of the optical fiber interferometer support can be reduced.

Description

Technical Field

[0001] This invention belongs to the field of fiber optics technology, specifically relating to a vertically mounted asymmetrical integral fiber optic interferometer bracket and its design method. Background Technology

[0002] Fiber optic interferometers, with their excellent sensitivity and stability, have been widely used in fields such as optical clocks, gravitational wave detection, dark matter detection, gravitational field measurement, fiber optic time and frequency transfer, optically generated ultrastable microwave sources, and ultrastable lasers. However, the performance of fiber optic interferometers is susceptible to external environmental factors, such as temperature variations and mechanical vibrations. Studies have shown that for some applications (such as ultrastable lasers), even minute vibrations can degrade the fiber optic interferometer signal, thereby reducing its superior performance. Typically, vibration primarily affects the performance of fiber optic interferometers through the transmission path from the interferometer support to the fiber optic loop.

[0003] To reduce the impact of vibration on the performance of fiber optic interferometers, vibration isolators and low-vibration-sensitivity fiber optic interferometer supports are commonly used. However, for space applications such as space gravitational wave detection, space optical clocking, and gravity field measurement, vibration isolators are clearly not the optimal choice given limited resources (such as size, weight, and power consumption). To meet the demands of these specialized, high-precision non-laboratory applications and reduce reliance on external vibration isolation devices, theoretically, the vibration sensitivity of the fiber optic interferometer support should be controlled within a certain range. / g level (inclusive). Based on this, scholars have conducted a great deal of fruitful research and designed different types of low-vibration-sensitive fiber optic interferometer supports, typical types including: cylindrical single supports, symmetrical non-integrated composite supports, and cylindrical double supports, etc., with the best theoretical analysis results reaching 10. -12 The order is on the order of / g, and the best experimental result has been achieved at 10. -11 These findings indicate that experimentally measured values ​​cannot yet meet the vibration sensitivity requirements of the aforementioned theories, necessitating a new low-vibration-sensitivity fiber optic interferometer support and design method. Currently, widely used ultrastable optical reference cavities can achieve 10 -12 The vibration sensitivity is on the order of / g, achieved using the principle of displacement "upper and lower cancellation". Some scholars have also used this method to design a symmetrical, non-integrated low-vibration-sensitivity fiber optic interferometer bracket, but it has not achieved the ideal 10 -12 / g-level vibration sensitivity results. The main reasons include two aspects: (1) According to the elastic deformation theory, due to Poisson's ratio, the deformation of the upper fiber interferometer bracket and the deformation of the lower fiber interferometer bracket are the same. The deformation of the upper fiber interferometer bracket is mainly reflected in the increase of diameter, while the deformation of the lower fiber interferometer bracket is mainly reflected in the decrease of diameter. The cumulative deformation and the influence of Poisson's ratio are different in the upper and lower displacements; (2) The upper and lower integrated design was not carried out, and only simple upper and lower assembly was carried out, which inevitably introduced non-negligible installation errors and stresses.

[0004] To address the aforementioned issues, this invention designs an ultra-low vibration sensitivity fiber optic interferometer support based on the principle of displacement "upper and lower cancellation," which is an integrated composite fiber optic interferometer support with upper and lower asymmetry. Summary of the Invention

[0005] To address the aforementioned problems in the existing technology, this invention provides a vertically mounted asymmetrical integral low-vibration-sensitivity fiber optic interferometer bracket and its design method. The technical problem to be solved by this invention is achieved through the following technical solution: In a first aspect, the present invention provides an asymmetrical integral fiber optic interferometer support for vertical mounting, comprising an upper support ring, a lower support ring, and an annular connecting plate, wherein the annular connecting plate is used to connect with an external support structure. The upper support ring includes an upper ring plate and an upper cylinder. The upper ring plate is located on the upper end face of the upper cylinder. The upper ring plate and the upper cylinder are coaxially arranged and are an integral structure. The lower support ring includes a lower ring plate and a lower cylinder. The lower ring plate is located on the lower end face of the lower cylinder. The lower ring plate and the lower cylinder are coaxially arranged and are an integral structure. The upper cylinder and the lower cylinder are coaxially arranged and are an integral structure. The upper cylinder and the lower cylinder form a connecting cylinder. An annular connecting plate is sleeved on the outside of the connecting cylinder, and the outer wall of the connecting cylinder is fixedly connected to the inner annular surface of the annular connecting plate. The upper ring plate and the lower ring plate have different dimensions, as do the upper cylinder and the lower cylinder. The upper support ring and the lower support ring are asymmetrical relative to the annular connecting plate. The upper ring plate, the upper cylinder, and the annular connecting plate together form the upper winding groove for winding optical fibers, and the lower ring plate, the lower cylinder, and the annular connecting plate together form the lower winding groove for winding optical fibers.

[0006] Secondly, the present invention also provides a design method for an asymmetric integral fiber optic interferometer bracket with vertical mounting, applicable to the asymmetric integral fiber optic interferometer bracket with vertical mounting as described above. The fiber optic interferometer bracket includes an upper bracket ring, a lower bracket ring, and an annular connecting plate. The method includes: Step 1: Determine the main geometric parameters affecting the fiber optic interferometer support; Step 2: Establish a mechanical model and analyze the impact of vibration on the fiber optic interferometer support based on the mechanical model; Step 3: Use finite element software to build a three-dimensional model of the fiber optic interferometer support, and simulate the vibration environment by applying boundary conditions and loads; Step 4: Use an optimization algorithm to determine the optimal combination of geometric parameters for the fiber optic interferometer support. Step 5: Verify through experiments whether the optimized fiber optic interferometer bracket achieves the required vibration sensitivity in practical applications. On the order of / g; Step Six: Based on the verification results in Step Five, adjust the optimization algorithm in Step Four and the geometric parameters of the fiber optic interferometer support.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: In the above-described scheme of this application, firstly, the fiber optic interferometer support includes an upper support ring, a lower support ring, and an annular connecting plate. The upper support ring includes an upper ring plate and an upper cylinder, and the lower support ring includes a lower ring plate and a lower cylinder. The upper ring plate and the upper cylinder are coaxially arranged and are an integral structure, as are the lower ring plate and the lower cylinder. With this structure, both the upper and lower support rings are centrally symmetrical, resulting in greater structural stability and more uniform stress distribution, thus improving the vibration resistance of the fiber optic interferometer support. Furthermore, the coaxial arrangement and integral structure of the upper and lower cylinders, meaning the upper and lower support rings are a single integrated mechanism, makes the fiber optic interferometer support an integral structure, reducing the vibration sensitivity caused by separate connections. Secondly, the upper and lower ring plates have different dimensions, as do the upper and lower cylinders. The upper and lower support rings are asymmetrical. The upper ring plate, upper cylinder, and annular connecting plate together form the upper winding groove for winding the optical fiber, while the lower ring plate, lower cylinder, and annular connecting plate together form the lower winding groove. This structure avoids the difference in deformation between the upper and lower fiber optic interferometer supports due to Poisson's ratio, which would otherwise affect the vibration sensitivity of the fiber optic interferometer support. In this application, the asymmetrical structure of the upper and lower support rings balances their deformation, resulting in lower overall vibration sensitivity of the fiber optic interferometer and more uniform stress on the optical fiber within the upper and lower winding grooves during winding. By optimizing the structure of the fiber optic interferometer support, this application significantly reduces the sensitivity of the fiber optic interferometer to micro-vibrations, achieving a vibration sensitivity of [missing information]. With a g-level accuracy and the ability to balance support size and vibration sensitivity, fiber optic interferometer supports have been promoted for application in high-precision measurement, especially in scenarios where it is necessary to get rid of reliance on external vibration isolation tables, such as high-precision ground-based time synchronization systems and space science missions.

[0008] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the fiber optic interferometer bracket provided in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the fiber optic interferometer support in an embodiment of the present invention.

[0010] Reference numerals: 1-Upper support ring, 11-Upper ring plate, 12-Upper cylinder, 2-Lower support ring, 21-Lower ring plate, 22-Lower cylinder, 3-Annular connecting plate, 4-Reinforcing rib structure, 41-Central cylinder, 42-Rib, 5-Connecting hole. Detailed Implementation

[0011] The present invention will be further described in detail below with reference to specific embodiments, but the implementation of the present invention is not limited thereto.

[0012] Example 1: Please see Figure 1 and Figure 2 This invention provides a vertically mounted asymmetrical, integrated low-vibration-sensitivity fiber optic interferometer support, comprising an upper support ring 1, a lower support ring 2, and an annular connecting plate 3. The annular connecting plate 3 is used to connect to an external support structure. The upper support ring 1 includes an upper ring plate 11 and an upper cylinder 12, with the upper ring plate 11 disposed on the upper end face of the upper cylinder 12. The upper ring plate 11 and the upper cylinder 12 are coaxially arranged and are an integral structure. The lower support ring 2 includes a lower ring plate 21 and a lower cylinder 22, with the lower ring plate 21 disposed on the lower end face of the lower cylinder 22. The lower ring plate 21 and the lower cylinder 22 are coaxially arranged and are an integral structure. The upper cylinder 12 and the lower cylinder 22... The upper cylinder 12 and the lower cylinder 22 are coaxially arranged and are an integral structure. The upper cylinder 12 and the lower cylinder 22 form a connecting cylinder. The annular connecting plate 3 is sleeved on the outside of the connecting cylinder, and the outer wall of the connecting cylinder is fixedly connected to the inner ring surface of the annular connecting plate 3. The size of the upper ring plate 11 is different from that of the lower ring plate 21, and the size of the upper cylinder 12 is different from that of the lower cylinder 22. The upper support ring 1 and the lower support ring 2 are asymmetrical relative to the annular connecting plate 3. The upper ring plate 11, the upper cylinder 12 and the annular connecting plate 3 together form an upper winding groove for winding optical fibers, and the lower ring plate 21, the lower cylinder 22 and the annular connecting plate 3 together form a lower winding groove for winding optical fibers.

[0013] In some embodiments of this application, the diameter of the upper ring plate 11 is smaller than the diameter of the lower ring plate 21, and the diameter of the upper cylinder 12 is smaller than the diameter of the lower cylinder 22. Thus, according to the theory of elastic deformation, due to Poisson's ratio, when the upper support ring 1 deforms, its diameter increases, and when the lower support ring 2 deforms, its diameter decreases. This makes the diameters of the upper support ring 1 and the lower support ring 2 closer, thereby balancing the deformation of the upper support ring 1 and the lower support ring 2, resulting in lower overall vibration sensitivity of the fiber optic interferometer.

[0014] In some embodiments of this application, such as Figure 1 and Figure 2 As shown, the connecting cylinder is equipped with a reinforcing rib structure 4, which is fixedly connected to the inner wall of both the upper cylinder 12 and the lower cylinder 22. This structure, by including the reinforcing rib structure 4 inside the connecting cylinder, not only improves the overall rigidity of the fiber optic interferometer support and reduces its overall weight, but also effectively disperses vibration energy, further reducing the vibration sensitivity of the fiber optic interferometer support and improving its vibration damping performance.

[0015] In some embodiments of this application, such as Figure 1 As shown, the reinforcing rib structure 4 includes a central cylinder 41 and ribs 42. The central cylinder 41 and the connecting cylinder are coaxially arranged. One end of the ribs 42 is connected to the inner wall of the connecting cylinder, and the other end is connected to the outer wall of the central cylinder 41. The height of the central cylinder 41 is the same as the height of the ribs 42. The upper end face of the central cylinder 41 is flush with the upper end face of the upper ring plate 11, and the lower end face of the central cylinder 41 is flush with the lower end face of the lower ring plate 21. With this structure, the overall rigidity of the fiber optic interferometer support can be improved by using the central cylinder 41 and ribs 42. At the same time, by using the central cylinder 41 and ribs 42 to disperse vibration energy, the vibration sensitivity of the fiber optic interferometer support can be further reduced.

[0016] In some embodiments of this application, three ribs 42 are provided, and the three ribs 42 are evenly distributed along the circumference of the central cylinder 41. This structure improves the stability of the reinforcing rib structure 4, thereby enhancing the overall stability of the fiber optic interferometer support.

[0017] In some embodiments of this application, the annular connecting plate 3 and the connecting cylinder are integral structures, and the reinforcing rib structure 4 and the connecting cylinder are integral structures. This structure improves the stability of the connection between the annular connecting plate 3 and the connecting cylinder, and also improves the stability of the connection between the reinforcing rib structure 4 and the connecting cylinder, thereby further reducing the vibration sensitivity of the fiber optic interferometer support.

[0018] In some embodiments of this application, such as Figure 1 and Figure 2As shown, the annular connecting plate 3 is provided with connecting holes 5 for connecting to the external support structure; there are multiple connecting holes 5, and the multiple connecting holes 5 are evenly distributed along the circumference of the annular connecting plate 3. With this structure, when the annular connecting plate 3 and the external support structure are connected through multiple connecting holes 5, the stability of the connection between the annular connecting plate 3 and the external support structure can be further improved.

[0019] In some embodiments of this application, the annular connecting plate 3 and the external support structure are connected by screws, and an elastic heat-insulating and vibration-damping pad is also provided between the annular connecting plate 3 and the external support structure. Using this structure, the elastic heat-insulating and vibration-damping pad can achieve vibration isolation and heat insulation between the annular connecting plate 3 and the external support structure, further improving the stability of the connection between the annular connecting plate 3 and the external support structure and reducing the vibration sensitivity of the fiber optic interferometer bracket.

[0020] In some embodiments of this application, the elastic heat-insulating and vibration-damping pad can be a rubber pad.

[0021] In some embodiments of this application, the fiber optic interferometer support can be made of materials with good mechanical properties and low density, which can reduce weight while ensuring structural strength. For example, titanium alloys and high-strength aluminum alloys are used. The high elastic modulus and low density of the materials can ensure that the support has sufficient stiffness and stability in a vibration environment.

[0022] In some embodiments of this application, the fiber optic interferometer bracket can be manufactured using precision CNC machining technology to ensure that its geometric parameters meet design requirements. During machining, high-precision lathes and milling machines can be used to ensure the roundness and flatness of the bracket rings, reducing friction and stress concentration during fiber winding. The surface of the fiber optic interferometer bracket can be anodized to improve its corrosion resistance and wear resistance.

[0023] In the above-described scheme of this application, firstly, the fiber optic interferometer support includes an upper support ring 1, a lower support ring 2, and an annular connecting plate 3. The upper support ring 1 includes an upper ring plate 11 and an upper cylinder 12, and the lower support ring 2 includes a lower ring plate 21 and a lower cylinder 22. The upper ring plate 11 and the upper cylinder 12 are coaxially arranged and are an integral structure, as are the lower ring plate 21 and the lower cylinder 22. With this structure, both the upper support ring 1 and the lower support ring 2 are centrally symmetrical, resulting in greater structural stability and more uniform stress distribution, thus improving the vibration resistance of the fiber optic interferometer support. Furthermore, the upper cylinder 12 and the lower cylinder 22 are coaxially arranged and are an integral structure, meaning that the upper support ring 1 and the lower support ring 2 are a single mechanism. Therefore, the fiber optic interferometer support is an integral structure, which reduces the vibration sensitivity caused by the separate connections of the fiber optic interferometer support. Secondly, the dimensions of the upper ring plate 11 and the lower ring plate 21 are different, as are the dimensions of the upper cylinder 12 and the lower cylinder 22. The upper support ring 1 and the lower support ring 2 have an asymmetrical structure. The upper ring plate 11, the upper cylinder 12, and the annular connecting plate 3 together form the upper winding groove for winding optical fibers, and the lower ring plate 21, the lower cylinder 22, and the annular connecting plate 3 together form the lower winding groove for winding optical fibers. This structure avoids the difference in deformation between the upper and lower fiber optic interferometer supports due to Poisson's ratio, which would affect the vibration sensitivity of the fiber optic interferometer support. In this application, the asymmetrical structure of the upper support ring 1 and the lower support ring 2 balances their deformation, resulting in lower overall vibration sensitivity of the fiber optic interferometer and, consequently, more uniform stress on the optical fibers within the upper and lower winding grooves during the winding process. This application optimizes the structure of the fiber optic interferometer support, significantly reducing the fiber optic interferometer's sensitivity to micro-vibrations, thereby achieving a vibration sensitivity of the fiber optic interferometer support that meets the required standards. With a g-level accuracy and the ability to balance support size and vibration sensitivity, fiber optic interferometer supports have been promoted for application in high-precision measurement, especially in scenarios where it is necessary to get rid of reliance on external vibration isolation tables, such as high-precision ground-based time synchronization systems and space science missions.

[0024] Understandably, this application optimizes the geometric parameters of the fiber optic interferometer bracket, achieving a vibration sensitivity on the order of / g, thus meeting the requirements for high-precision measurement. Simultaneously, the optimized bracket eliminates reliance on an external vibration isolation table, effectively suppressing micro-vibrations and reducing system complexity and cost. Furthermore, while ensuring low vibration sensitivity, the aforementioned fiber optic interferometer bracket avoids excessively large vertical dimensions, ensuring a compact structure suitable for space-constrained environments. Additionally, the aforementioned fiber optic interferometer bracket improves the bracket's stability and symmetry, further enhancing its vibration resistance.

[0025] In high-precision ground-based time synchronization systems, fiber optic interferometers are key components, and their performance directly affects the stability and accuracy of the entire system. When the fiber optic interferometer bracket described in this application is used, the measurement accuracy of the high-precision ground-based time synchronization system under micro-vibration environment is significantly improved, successfully eliminating the dependence on external vibration isolation tables, reducing the size and weight of the equipment, and improving the reliability and portability of the system.

[0026] In space science missions, such as space gravitational wave and gravity field measurements, fiber optic interferometers need to maintain high precision under extreme environments. The fiber optic interferometer support described in this application exhibits excellent performance in the micro-vibration environment of space, thereby ensuring the stability and reliability of measurement data and providing technical support for mission success.

[0027] Example 2: This invention also provides a design method for a vertically mounted asymmetric integral low-vibration-sensitivity fiber optic interferometer bracket, applicable to the vertically mounted asymmetric integral low-vibration-sensitivity fiber optic interferometer bracket provided in Embodiment 1 above. The fiber optic interferometer bracket includes an upper bracket ring, a lower bracket ring, and an annular connecting plate. The method includes: Step 1: Determine the main geometric parameters affecting the fiber optic interferometer support; In fiber optic interferometer systems, the geometric parameters of the support structure are the core factors determining its dynamic performance. Optical interferometers are extremely sensitive to vibration and noise; the stiffness, mass distribution, and modal characteristics of the support directly affect the stability of the interference signal. First, it is necessary to identify the key geometric parameters that are strongly correlated with the mechanical properties of the support, such as... Figure 2 As shown, the key geometric parameters include the diameter D1 of the upper ring plate, the diameter D2 of the lower ring plate, the thickness T1 of the upper ring plate, the thickness T2 of the lower ring plate, and the distance H between the upper and lower ring plates.

[0028] Step 2: Establish a mechanical model and analyze the impact of vibration on the fiber optic interferometer support based on the mechanical model.

[0029] The model considers the geometric parameters, material properties, and influence of external vibration sources of the support structure. Theoretical analysis shows that the vibration sensitivity of the support structure is mainly affected by geometric parameters (such as the diameter, thickness, and spacing of the support rings) and the design of the support structure.

[0030] Step 3: Use finite element software to build a three-dimensional model of the fiber optic interferometer support, and simulate the vibration environment by applying boundary conditions and loads.

[0031] During the simulation, different vibration frequencies and amplitudes can be input, and the response of the fiber optic interferometer support can be recorded. The vibration sensitivity of the fiber optic interferometer support can be evaluated based on its response.

[0032] Step 4: Use an optimization algorithm to determine the optimal combination of geometric parameters for the fiber optic interferometer support.

[0033] The optimization algorithm can be a genetic algorithm, particle swarm optimization, etc. The optimization algorithm iteratively calculates and continuously adjusts the geometric parameters of the fiber optic interferometer support to find the parameter combination that minimizes the vibration sensitivity of the fiber optic interferometer support.

[0034] Step 5: Verify through experiments whether the optimized fiber optic interferometer bracket achieves the required vibration sensitivity in practical applications. On the order of magnitude / g.

[0035] In the experiment, the optimized fiber optic interferometer bracket was installed on the fiber optic interferometer, vibration tests were conducted, and the test results were recorded and analyzed.

[0036] Step Six: Based on the verification results in Step Five, adjust the optimization algorithm in Step Four and the geometric parameters of the fiber optic interferometer support.

[0037] In step five, based on the verification results, the optimization algorithm and geometric parameters from step four can be adjusted, including the diameter, thickness, and spacing of the upper and lower ring plates, to further reduce the vibration sensitivity of the fiber optic interferometer support. The performance of the adjusted support is verified through secondary experiments. Experimental results show that the iteratively improved support exhibits better performance in terms of vibration sensitivity, further validating the effectiveness of the optimization design method. Through multiple iterative improvements, the optimal combination of geometric parameters for the support is finally determined, ensuring its stability and accuracy under various vibration conditions. The optimized support ultimately demonstrates excellent performance in practical applications, providing reliable technical support for the application of high-precision fiber optic interferometers.

[0038] The specific implementation steps are as follows: First, initial parameter settings are performed: based on theoretical analysis and empirical data, the initial geometric parameters of the fiber optic interferometer support are set, including the diameter, thickness, and spacing of the upper and lower ring plates.

[0039] Next, finite element modeling is performed: a three-dimensional model of the fiber optic interferometer support is established using finite element software (such as ANSYS, COMSOL, etc.), boundary conditions and loads are applied, and the vibration environment is simulated.

[0040] Next, parameter optimization is performed: the geometric parameters of the support are adjusted through optimization algorithms, the vibration sensitivity after each adjustment is calculated, and the optimal parameter combination is found.

[0041] Next, experimental verification was conducted: an optimized fiber optic interferometer bracket was manufactured, installed on the fiber optic interferometer, and vibration tests were performed to verify whether its vibration sensitivity reached the required level. On the order of magnitude / g.

[0042] Finally, iterative improvements are made: based on the experimental results, the optimization algorithm and geometric parameters are further adjusted and iteratively improved until the expected vibration sensitivity is achieved.

[0043] The beneficial effects of Embodiment 2 and its various implementations of the present invention can be found in the analysis of the beneficial effects of Embodiment 1 and its various implementations, and will not be repeated here.

[0044] In some embodiments of this application, step four specifically includes: using a genetic algorithm to optimize the parameters of the fiber optic interferometer support, and through iterative calculation, adjusting the geometric parameters of the fiber optic interferometer support multiple times to determine the parameter combination with the minimum vibration sensitivity.

[0045] The genetic algorithm iteratively adjusts the geometric parameters of the fiber optic interferometer support to find the parameter combination that minimizes the vibration sensitivity of the support. During optimization, the population size is set to 100, the number of iterations to 1000, the crossover probability to 0.8, and the mutation probability to 0.01. Through multiple iterations, the optimal combination of geometric parameters is determined, including the diameter, thickness, and spacing of the upper and lower ring plates.

[0046] In some embodiments of this application, the upper support ring includes an upper ring plate and an upper cylinder, and the lower support ring includes a lower ring plate and a lower cylinder. The upper ring plate, the upper cylinder, and the annular connecting plate together form an upper winding groove for winding optical fibers, and the lower ring plate, the lower cylinder, and the annular connecting plate together form a lower winding groove for winding optical fibers. Step five specifically includes: installing the fiber optic interferometer bracket on a vibration platform, uniformly winding the optical fiber in the upper and lower winding grooves, applying vibration through the vibration platform to simulate the vibration conditions of the fiber optic interferometer bracket in the actual working environment; recording the frequency change data of the fiber optic interferometer bracket under different vibration conditions, analyzing the test results through data processing software, calculating the vibration sensitivity of the fiber optic interferometer bracket, and verifying whether the vibration sensitivity of the optimized fiber optic interferometer bracket reaches the target value. On the order of magnitude / g.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A vertically mounted asymmetrical integral fiber optic interferometer bracket, characterized in that, It includes an upper support ring, a lower support ring, and an annular connecting plate, wherein the annular connecting plate is used to connect with an external support structure; The upper support ring includes an upper ring plate and an upper cylinder. The upper ring plate is disposed on the upper end face of the upper cylinder. The upper ring plate and the upper cylinder are coaxially arranged and are an integral structure. The lower support ring includes a lower ring plate and a lower cylinder. The lower ring plate is disposed on the lower end face of the lower cylinder. The lower ring plate and the lower cylinder are coaxially arranged and are an integral structure. The upper cylinder and the lower cylinder are coaxially arranged and are an integral structure. The upper cylinder and the lower cylinder form a connecting cylinder. The annular connecting plate is sleeved on the outside of the connecting cylinder, and the outer wall of the connecting cylinder is fixedly connected to the inner annular surface of the annular connecting plate. The upper ring plate and the lower ring plate have different dimensions, the upper cylinder and the lower cylinder have different dimensions, the upper support ring and the lower support ring are asymmetrical relative to the annular connecting plate, the upper ring plate, the upper cylinder and the annular connecting plate together form an upper winding groove for winding optical fiber, and the lower ring plate, the lower cylinder and the annular connecting plate together form a lower winding groove for winding optical fiber.

2. The vertically mounted asymmetrical integral fiber optic interferometer bracket according to claim 1, characterized in that, The connecting cylinder is provided with a reinforcing rib structure, which is fixedly connected to the inner wall of both the upper cylinder and the lower cylinder.

3. The vertically mounted asymmetrical integral fiber optic interferometer bracket according to claim 2, characterized in that, The reinforcing rib structure includes a central cylinder and ribs. The central cylinder and the connecting cylinder are coaxially arranged. One end of the rib is connected to the inner wall of the connecting cylinder, and the other end is connected to the outer wall of the central cylinder. The height of the central cylinder is the same as the height of the rib. The upper end face of the central cylinder is flush with the upper end face of the upper ring plate, and the lower end face of the central cylinder is flush with the lower end face of the lower ring plate.

4. The vertically mounted asymmetrical integral fiber optic interferometer bracket according to claim 3, characterized in that, The ribs are provided in three parts, and the three ribs are evenly distributed along the circumference of the central cylinder.

5. The vertically mounted asymmetrical integral fiber optic interferometer bracket according to claim 2, characterized in that, The annular connecting plate and the connecting cylinder are an integral structure, and the reinforcing rib structure and the connecting cylinder are an integral structure.

6. The vertically mounted asymmetrical integral fiber optic interferometer bracket according to claim 5, characterized in that, The annular connecting plate is provided with connection holes for connecting to the external support structure; The connecting holes are provided in multiple ways, and the multiple connecting holes are evenly distributed along the circumference of the annular connecting plate.

7. The vertically mounted asymmetrical integral fiber optic interferometer bracket according to claim 6, characterized in that, The annular connecting plate and the external support structure are connected by screws, and an elastic heat-insulating and vibration-damping pad is also provided between the annular connecting plate and the external support structure.

8. A design method for a vertically mounted asymmetrical integral fiber optic interferometer bracket, characterized in that, Applied to the vertically mounted asymmetrical integral fiber optic interferometer bracket as described in any one of claims 1 to 7, the fiber optic interferometer bracket comprising an upper bracket ring, a lower bracket ring, and an annular connecting plate, the method comprising: Step 1: Determine the main geometric parameters affecting the fiber optic interferometer support; Step 2: Establish a mechanical model and analyze the impact of vibration on the fiber optic interferometer support based on the mechanical model; Step 3: Use finite element software to build a three-dimensional model of the fiber optic interferometer support, and simulate the vibration environment by applying boundary conditions and loads; Step 4: Use an optimization algorithm to determine the optimal combination of geometric parameters for the fiber optic interferometer support. Step 5: Verify through experiments whether the optimized fiber optic interferometer bracket achieves the required vibration sensitivity in practical applications. On the order of / g; Step Six: Based on the verification results in Step Five, adjust the optimization algorithm in Step Four and the geometric parameters of the fiber optic interferometer bracket.

9. The design method for the vertically mounted asymmetrical integral fiber optic interferometer bracket according to claim 8, characterized in that, Step four specifically includes: A genetic algorithm was used to optimize the parameters of the fiber optic interferometer support. Through iterative calculations, the geometric parameters of the fiber optic interferometer support were adjusted multiple times to determine the parameter combination with the minimum vibration sensitivity.

10. The design method for the vertically mounted asymmetrical integral fiber optic interferometer bracket according to claim 8, characterized in that, The upper support ring includes an upper ring plate and an upper cylinder, and the lower support ring includes a lower ring plate and a lower cylinder. The upper ring plate, the upper cylinder, and the annular connecting plate together form an upper winding groove for winding optical fibers, and the lower ring plate, the lower cylinder, and the annular connecting plate together form a lower winding groove for winding optical fibers. Step five specifically includes: The fiber optic interferometer bracket is mounted on a vibration platform, and the optical fiber is evenly wound in the upper winding groove and the lower winding groove. Vibration is applied through the vibration platform to simulate the vibration conditions of the fiber optic interferometer bracket in the actual working environment. The frequency variation data of the fiber optic interferometer bracket under different vibration conditions were recorded. The test results were analyzed using data processing software to calculate the vibration sensitivity of the fiber optic interferometer bracket and verify whether the optimized vibration sensitivity of the fiber optic interferometer bracket met the requirements. On the order of magnitude / g.

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