A fiber side polishing device and system based on grinding processing

Abstract

The application discloses a fiber side polishing device and system based on grinding processing, and relates to the technical field of fiber sensing. The fiber side polishing device comprises a fiber fixing platform and a side polishing device, the fiber fixing platform is used for fixing a transmission fiber, the side polishing device is used for grinding processing of a processing area of the transmission fiber, that is, side polishing, and automatic control of the fiber side polishing device can realize automatic, low-cost and high-repetitive production of a fiber side polishing structure.

Description

Technical Field

[0001] This application relates to the field of fiber optic sensing technology, and in particular to a fiber optic side-polishing device and system based on grinding processing. Background Technology

[0002] The advancement of science and technology has spurred the rapid growth of many emerging technology industries. Among them, fiber optic technology, which began to emerge in the last century, has become an indispensable emerging industry in electronic information technology for daily life and industrial production. It is mainly used for information communication, optical imaging, and sensing and detection, and is widely applied in various fields and occasions due to its strong anti-interference capabilities and remote monitoring capabilities. Therefore, the development of fiber optic technology has attracted much attention. Fiber optic sensing technology, which uses optical fibers for sensing and detection, is one of the important technologies in the field of detection. The core technology is the manufacturing and production of fiber optic sensing units. However, most fiber optic sensing units are manufactured in laboratories, which suffers from drawbacks such as high manufacturing difficulty, low repeatability, and high requirements for operators.

[0003] Fiber optic sensing technology requires specially fabricated fiber optic sensing units, primarily including fiber gratings, fiber optic interferometric microcavities, fiber optic fluorescence probes, photonic crystal fibers, and fiber-optic side-thrown evanescent wave probes. Among these, the fiber-optic side-thrown evanescent wave probe achieves sensing by generating evanescent waves through side-throwing on the fiber surface. Its main applications include fiber-optic surface plasmon resonance (SPR) and evanescent wave fluorescence interferometry, with widespread use in the biochemical field. It boasts high detection sensitivity and the ability to simultaneously detect multiple parameters, resulting in significant application demand. Current manufacturing methods mainly involve manual grinding, but due to its unique process, it is time-consuming, difficult to fabricate, and requires highly skilled operators, making mass production difficult through manual grinding alone. Given the current huge application and mass production demand for fiber optic side-thrown evanescent wave probes, developing a device capable of automated, low-cost, and highly repeatable manufacturing of fiber optic side-thrown structures has significant engineering implications and market demand. It can rapidly promote the production of fiber optic side-thrown structures and lay a solid industrial foundation for the widespread application of fiber optic sensing technology in biochemical detection. Summary of the Invention

[0004] The purpose of this application is to provide an optical fiber side-polishing device and system based on grinding processing, so as to provide an automated, low-cost, and highly repeatable device and system for producing optical fiber side-polished structures.

[0005] To achieve the above objectives, this application provides the following solution.

[0006] In a first aspect, this application provides an optical fiber side polishing device based on grinding processing, the optical fiber side polishing device comprising: an optical fiber fixing platform and a side polishing device; The optical fiber fixing platform is used to fix and straighten the transmission optical fiber; The side-throwing device is used to grind the processing area of ​​the transmission optical fiber.

[0007] Secondly, this application provides an optical fiber side polishing system based on grinding, the optical fiber side polishing system including the above-mentioned optical fiber side polishing equipment, and the optical fiber side polishing system further including: a computer module, a motor control module, a light source module and a light acquisition module; The light source module and the light acquisition module are respectively disposed at both ends of the transmission optical fiber. The light source module is used to generate an incident light signal and input the incident light signal into the transmission optical fiber. The optical acquisition module is signal-connected to the computer module. The optical acquisition module is used to detect the spectral information of the transmitted light signal after transmission through the optical fiber and send the spectral information to the computer module. The computer module is signal-connected to the motor control module. The computer module is used to analyze the spectral information, generate control commands based on the analysis results, and send the control commands to the motor control module. The motor control module is mechanically connected to the optical fiber side-throwing device; the motor control module is used to drive the optical fiber side-throwing device based on the control commands.

[0008] According to the specific embodiments provided in this application, this application has the following technical effects.

[0009] This application provides an optical fiber side polishing equipment and system based on grinding. The optical fiber side polishing equipment of this application includes an optical fiber fixing platform and a side polishing device. The optical fiber fixing platform is used to fix the transmission optical fiber, and the side polishing device is used to perform grinding processing on the processing area of ​​the transmission optical fiber, i.e., side polishing. By automating the control of the optical fiber side polishing equipment, automated, low-cost, and highly repeatable production of optical fiber side polishing structures can be achieved. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of an optical fiber side-polishing device based on grinding processing, provided as an embodiment of this application.

[0012] Figure 2 This is a schematic diagram of a fiber optic side-polishing system based on grinding, provided as an embodiment of this application.

[0013] Figure 3 A flowchart of the optical fiber side polishing system based on grinding processing provided in one embodiment of this application.

[0014] Figure 4 This is a schematic diagram illustrating the optical performance testing principle of an optical fiber side-polishing system based on grinding processing, provided in one embodiment of this application.

[0015] Explanation of reference numerals in the attached figures: 1. Computer module; 2. Data cable; 3. Motor control module; 4. Light source module; 5. Transmission optical fiber; 6. Optical fiber side-throwing device; 7. Light acquisition module; 8. First tray; 9. First tray guide rail; 10. First optical fiber holder; 11. Image acquisition module; 12. Cover plate; 13. Hinge; 14. Support platform; 15. Platform guide rail; 16. Grinding wheel; 17. Telescopic bracket; 18. Incident light signal; 19. Transmitted light signal. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] The fiber optic sensing units that require special fabrication in fiber optic sensing technology mainly include fiber gratings, fiber optic interference microcavities, fiber optic fluorescence probes, photonic crystal fibers, and fiber optic side-thrown evanescent wave probes.

[0019] Fiber Bragg gratings are primarily manufactured by laser etching periodic structures onto the surface of optical fibers. This technology is mature and commercially available, offering good repeatability. However, commercially available fiber Bragg grating sensors are currently limited to simple physical quantity detection, restricting their application scope. Fiber optic interferometric microcavities are manufactured through staggered splicing, end-face reflective films, or reference arms. Their practical applications are mainly for simple physical quantity sensing; however, their precise and complex manufacturing process necessitates minimal standardization for mass production. Fiber fluorescent probes are prepared by coating or modifying the fiber end face or surface with fluorescent materials. Their flexible preparation and specialized processes make large-scale mass production and automation difficult; small-batch manual production is preferable. Photonic crystal fibers are manufactured by constructing special photonic structures within the fiber. Their high manufacturing difficulty and demanding equipment requirements limit their widespread practical application, thus eliminating the need for automated mass production. Fiber side-thrown evanescent wave probes achieve sensing by generating evanescent waves through side-thrown propagation on the fiber surface. They offer high sensitivity and the ability to simultaneously detect multiple parameters, creating significant application demand.

[0020] In one exemplary embodiment, a fiber optic side-polishing device based on grinding is provided, comprising: a fiber optic fixing platform and a side-polishing device; the fiber optic fixing platform is used to fix and straighten the transmission fiber; the side-polishing device is used to perform grinding on the processing area of ​​the transmission fiber.

[0021] The fiber optic fixing platform in the above embodiments is used to fix the transmission fiber to prevent jitter and movement, and to straighten the transmission fiber to prevent manufacturing errors caused by uneven force during the grinding process. This fiber optic fixing platform can be automatically adjusted via corresponding guide rails. The side-polishing device in the above embodiments consists of a grinding wheel and a matching movable drive platform, which can effectively grind a specific area (i.e., the processing area) of the transmission fiber to achieve the fabrication of a side-polished fiber structure. Automated control of this fiber optic side-polishing equipment enables automated, low-cost, and highly repeatable production of side-polished fiber structures.

[0022] In another exemplary embodiment, such as Figure 1As shown, the optical fiber fixing platform includes a first optical fiber holder 10, a second optical fiber holder, a first tray guide rail 9, a second tray guide rail, a first tray 8, and a second tray. The first tray 8 and the second tray are movably mounted on the first tray guide rail 9 and the second tray guide rail, respectively. The first optical fiber holder 10 and the second optical fiber holder are fixedly mounted inside the first tray 8 and the second tray, respectively. Both the first tray guide rail and the second tray guide rail have through holes. During processing, the transmission optical fiber 5 passes through the through holes in the first tray guide rail 9 and the second tray guide rail, and is fixed and straightened by the first optical fiber holder 10 and the second optical fiber holder. The processing area of ​​the transmission optical fiber is located between the first optical fiber holder 10 and the second optical fiber holder.

[0023] In another exemplary embodiment, such as Figure 1 As shown, the aforementioned optical fiber fixing platform includes two sets of fixing clamping structures correspondingly arranged at both ends of the processing area of ​​the transmission optical fiber. The first optical fiber holder 10, the first tray 8, and the first tray guide rail 9 constitute the first set of fixing clamping structures, while the second optical fiber holder, the second tray guide rail, and the second tray constitute the second set of fixing clamping structures. The following description uses the first set of fixing clamping structures as an example. The specific structure of the second set of fixing clamping structures is the same as that of the first set of fixing clamping structures, and will not be repeated here.

[0024] like Figure 1 As shown, the first fiber optic clamp 10 is mounted on the first tray 8 on the left side. There will be no relative movement between the left end of the processing area for the transmission fiber 5 and the first fiber optic clamp 10, or between the clamp 10 and the first tray 8. After ensuring the transmission fiber 5 is fixed, the first tray 8 moves axially parallel to the transmission fiber 5 on the first tray guide rail 9, straightening the transmission fiber 5 and ensuring that the transmission fiber 5 does not experience uneven force during grinding. During the movement of the first tray 8, the second set of fixing clamping structures located at the right end of the processing area for the transmission fiber 5 remains stationary, allowing the second tray to move in the opposite direction.

[0025] In another exemplary embodiment, the above-mentioned side-throwing device includes a support platform 14, a platform guide rail 15, a telescopic bracket 17, and a grinding wheel 16; the support platform 14 is movably mounted on the platform guide rail 15; the grinding wheel 16 is connected to the support platform 14 via the telescopic bracket 17; during processing, the length of the side throw is adjusted by moving the support platform 14 on the platform guide rail 15, and the depth of the side throw is adjusted by extending and retracting the telescopic bracket 17.

[0026] In another exemplary embodiment, grinding of different shaped side-polishing structures can be achieved by changing the direction and angle of the grinding wheel 16, thereby increasing the sensitivity of the fiber optic side-polishing structure.

[0027] In another exemplary embodiment, the above-described fiber optic side-throwing device further includes a housing and a cover plate 12; the side-throwing device is located inside the housing, and the fiber optic fixing platform is disposed on two opposite side walls of the housing; one side of the cover plate 12 is connected to one side of the housing via a hinge 13.

[0028] In another exemplary embodiment, the number of the above-mentioned grinding devices can be one or more, and the one or more can be set according to certain rules to realize synchronous grinding of different sides of the transmission optical fiber. Figure 1 The diagram shows two grinding devices, but the specific number of grinding devices can be set according to actual needs in the specific implementation of this application, and is not limited here.

[0029] In another exemplary embodiment, combined with Figure 1 and Figure 2 The implementation method of automated grinding of the optical fiber side polishing equipment provided in the embodiments of this application is described.

[0030] The most important processing component in the grinding device is the grinding wheel 16. The grinding wheel 16 is a small grinding wheel. In this embodiment, the small grinding wheel specifically refers to a grinding wheel with a diameter of 1 cm or less. It can be used to grind and process the optical fiber 5 and to manufacture the optical fiber side-throwing structure in the processing area. The grinding wheel 16 is mounted on the support platform 14 through the telescopic bracket 17 and is driven by the motor control module 3 connected to the data cable 2. The telescopic bracket 17 can extend and retract the grinding wheel 16 back and forth to adjust the side-throwing depth. The platform guide rail 15 is used to make the grinding wheel 16 move laterally during the processing to adjust the side-throwing length.

[0031] In this embodiment of the application, the adjustment process of the depth and length of the side-throwing can be standardized and controlled with high precision by the programming instructions of the computer module 1, thereby enabling standardized and high-precision mass production processing.

[0032] In another exemplary embodiment, a flip-up cover 12 is connected to the top of the housing of the entire fiber optic side-throwing device via a hinge 13. An image acquisition module 11 with built-in illumination is installed on the cover for monitoring the inspection area. The module acquires images of the processing process in real time and transmits them to the computer module 1 via a data cable 2 for observation and operation.

[0033] In another exemplary embodiment, the image acquisition module 11 described above can be a CCD module. The CCD module serves as a monitoring element during the processing of the fiber optic side-throwing structure and can transmit real-time images of the processing process to the computer module 1. The image acquisition module 11 described above can also use a CMOS module or an infrared detection camera with similar functions to the CCD module to perform real-time image acquisition, so that the operator can monitor the processing process in real time and have the necessary field of view for manual operation.

[0034] According to the various fiber optic side-throwing device embodiments provided in this application, the fiber optic side-throwing device of this application has the following technical effects.

[0035] The fiber optic fixing platform can fix the position of the transmission fiber and straighten the transmission fiber, avoiding the problem of uneven force during processing. The grinding wheel 16, as a component of the side polishing device, can form a side polishing structure with different grooves on the surface of the transmission fiber 5 by rotation. The straightening and side polishing processes can be realized by programming control. The fiber optic side polishing equipment of this application can fully realize automated processing and production. Moreover, the accuracy of processing by programming will be far higher than that of manual operation, effectively improving the repeatability of manufacturing.

[0036] The optical fiber side-throwing equipment of this application has a compact structure and complete functions. The entire processing flow can be automated and precisely operated through computer programming and motor drive, which effectively improves processing efficiency and accuracy, and greatly reduces the cumbersome process and cost of manual manufacturing.

[0037] In one exemplary embodiment, a fiber optic side-polishing system based on grinding is provided, such as... Figure 2 As shown, the fiber optic side-throwing device 6, as described above, also includes: a computer module 1, a motor control module 3, a light source module 4, and a light acquisition module 7. The light source module 4 and the light acquisition module 7 are located at opposite ends of the transmission fiber 5. The light source module 4 generates an incident light signal and inputs it into the transmission fiber. The light acquisition module 7 is connected to the computer module 1 and is used to detect the spectral information of the transmitted light signal after transmission through the transmission fiber 5, and sends the spectral information to the computer module 1. The computer module 1 is signal-connected to the motor control module 3 and is used to analyze the spectral information, generate control commands based on the analysis results, and send the control commands to the motor control module 3. The motor control module 3 is mechanically connected to the fiber optic side-throwing device 6 and is used to drive the fiber optic side-throwing device 6 based on the control commands.

[0038] In another exemplary embodiment, the fiber fixing platform and the side-throwing device in the above-mentioned fiber side-throwing equipment can be controlled by the motor control module 3 through the data line 2 to achieve normal operation without manual operation for fixing and grinding. An image acquisition module 11 capable of recording and transmitting real-time images is also installed on the top of the fiber side-throwing equipment. The image acquisition module 11 is used to monitor the processing of the entire fiber side-throwing structure, so that the operator can observe and monitor the entire automated programming grinding process or perform manual remote operation to complete customized grinding processing, thereby achieving the purpose of fully automated processing.

[0039] In another exemplary embodiment, the motor control module 3 described above is internally equipped with multiple motors for driving the various components within the fiber optic side-throwing device 6 to operate normally. Specifically, the motor control module 3 includes a motor controller, a first motor, a second motor, a third motor, a fourth motor, and a fifth motor. The computer module 1 is signal-connected to the motor controller, and the motor controller is electrically connected to the drive control terminals of the first motor, the second motor, the third motor, the fourth motor, and the fifth motor. The first motor is used to drive the first tray 8 to move on the first tray guide rail 9; the second motor is used to drive the second tray to move on the second tray guide rail; the third motor is used to drive the support platform 14 to move on the platform guide rail 15; the fourth motor is used to drive the telescopic bracket 17 to extend and retract; and the fifth motor is used to drive the grinding wheel 16 to rotate.

[0040] In another exemplary embodiment, the process of the motor control module 3 driving the various components within the fiber optic side-throwing device 6 may require the addition of mechanical structures tailored to the specific application. For example, when using the first motor to drive the first tray 8 to move on the first tray guide rail 9, the first motor may need to be integrated with the wheels at the bottom of the first tray 8 via a hub, or a conveyor belt structure may be installed on the first tray guide rail 9, with the first motor driving the conveyor belt to move the first tray 8. Alternatively, the first tray guide rail 9 may be configured as a lead screw structure, with the first motor driving the first tray guide rail 9 to rotate, thereby moving the first tray 8 on the first tray guide rail 9, and so on. No specific limitations are imposed on the added mechanical structures in this application.

[0041] In another exemplary embodiment, the motor control module 3 can set programming instructions through the computer module 1 and control it through the data line 2 to realize the operation of the optical fiber side-throwing equipment 6 in an assembly line production mode to fix, straighten and grind the transmission optical fiber 5 to a specified depth and width.

[0042] In another exemplary embodiment, the motor control module 3 can also receive a single instruction step from the computer module 5 via the data line 2 to realize the operator's customized grinding process, which can meet the needs of mass production and customized production.

[0043] In another exemplary embodiment, the light acquisition module 7 described above has a built-in grating with a beam splitting function as a beam splitting element, which can convert the detected light signal into wavelength-light intensity spectral information and transmit the spectral information to the computer module 1 through the data line 2 for analysis. This is used to detect the light loss generated by the light signal passing through the fiber optic side-throwing structure and to determine whether the fiber optic side-throwing structure is qualified.

[0044] In another exemplary embodiment, in terms of controlling the optical fiber side-throwing device based on the analysis results, the computer module 1 is specifically configured to: control the first tray to move on the first tray guide rail and / or control the second tray to move on the second tray guide rail to adjust the clamping position and the stress in the processing area for transmitting optical fibers; control the support platform to move on the platform guide rail to adjust the length of side-throwing; control the extension and retraction of the telescopic bracket to adjust the depth of side-throwing; and control the rotational speed of the grinding wheel to adjust the speed of side-throwing.

[0045] In this embodiment, the computer module 1 can receive the spectral information transmitted from the optical acquisition module 7 via the data cable 2 and visualize it on the screen. By analyzing the magnitude of its optical loss, it can determine whether the grinding process of the fiber optic side-polishing structure is qualified. In addition, it can also send programming instructions or individual manual operation instructions to the motor control module 3 via the data cable 2 to control the fiber optic side-polishing equipment 6 to perform automated grinding operations or manual customized processing operations. The entire processing process can be monitored by transmitting real-time processing images through the image acquisition module 11 built into the fiber optic side-polishing equipment 6, thereby realizing intelligent and automated grinding processing manufacturing.

[0046] In another exemplary embodiment, in terms of analyzing the spectral information, computer module 1 is specifically configured to: Solve the formula based on the spectral information. To obtain the optical loss degree of the fiber side-projection structure; among which, The intensity of the transmitted light signal. The intensity of the incident light signal. The attenuation coefficient characterizes the degree of optical loss. The length of the side-thrown fiber is given; this fiber side-thrown structure is obtained by grinding the processing area of ​​the transmission fiber.

[0047] Based on spectral information, using the formula Calculate the coupling efficiency of the fiber side-projection structure; where, For coupling efficiency.

[0048] In another exemplary embodiment, the principles of optical performance analysis are provided.

[0049] After the fiber optic side-polished structure is fabricated, its optical performance can be tested using a detection optical path formed by the light source module 4 and the light acquisition module 7. This ensures that the fabricated fiber optic side-polished structure meets the standards for further sensor manufacturing. The detection principle primarily relies on judging the optical loss after the fiber optic side-polished structure has undergone the polishing process. During the side-polishing process, the cladding of the fiber optic side-polished structure is ground away, and even the fiber core may be exposed. In the exposed areas, evanescent fields and corresponding evanescent waves are formed. This phenomenon generates a certain degree of optical loss and interacts with the external environment (medium). This is a fundamental principle and necessary condition for sensor fabrication; therefore, the degree of optical loss has a significant impact on the performance of the subsequently fabricated sensor. According to the formula... The attenuation coefficient (i.e., optical loss) can be calculated based on the optical signal intensity after passing through the fiber side-throwing structure; according to the formula... The coupling efficiency of the fiber side-thrown structure can be calculated. For example... Figure 4 As shown, when the incident light signal 18 enters the fiber-to-optical structure from the transmission fiber 5, it interacts with the external environment due to the evanescent wave before being coupled back into the transmission fiber 5. This coupling process results in varying degrees of loss, which is reflected in the intensity of the output transmitted light signal 19. At this point, the intensity of the transmitted light signal 19 is generally lower than that of the incident light signal 18. According to the formula... It can be seen that when the depth and length of the grinding process increase, the coupling efficiency will decrease significantly and the degree of optical loss will change regularly. The degree of optical loss detected by the optical acquisition module 7 can determine whether the processed fiber side-thrown structure can meet the requirements of subsequent sensor fabrication. Sensors with high sensitivity requirements generally require higher loss, while those that pursue signal coupling efficiency can use a fiber side-thrown structure with lower loss.

[0050] In another exemplary embodiment, the processing area of ​​the aforementioned transmission fiber 5 is used to process the fiber side-spraying structure. The type of transmission fiber 5 can be selected according to the usage requirements. For example, it can be a different type of fiber such as multimode fiber, dual-core fiber, polarization-maintaining fiber, or photonic crystal fiber. The core diameter can also be increased or decreased according to the needs of sensor fabrication without affecting the grinding process.

[0051] In another exemplary embodiment, the above-mentioned transmission optical fiber 5 uses commercial-grade multimode optical fiber with a core diameter of 50μm for transmission and grinding. The ground part is fixed in the optical fiber side polishing device 6 and straightened, while the other part is used to connect the light source module 4 and the light acquisition module 7 to form a detection optical path. The optical loss of the prepared optical fiber side polishing structure is detected, and the optical loss of the optical fiber side polishing structure during the processing is used to determine whether it meets the standard.

[0052] In another exemplary embodiment, the light source module 4 described above includes at least a light source capable of outputting visible light signals with a wavelength range of 380-750nm. The incident light signal generated by the light source module 4 is transmitted through the processed optical fiber side-spraying structure, and the transmitted light signal is received and detected by the light acquisition module 7. That is, the light source module 4 is used to assist in detecting whether the optical loss of the optical fiber side-spraying structure meets the standard.

[0053] In another exemplary embodiment, the optical acquisition module 7 described above can be a fiber optic spectrometer, or it can be replaced by a device or instrument with optical signal intensity detection capability, such as a photodetector, optical power meter, or other miniaturized instrument. When the specific wavelength loss requirement is unclear, it can achieve simpler detection and judgment of the processed optical fiber side-thrown structure.

[0054] In another exemplary embodiment, such as Figure 3 As shown, the working process of the above-mentioned fiber optic side polishing system based on grinding is provided. The fiber optic side polishing structure is completed by the fiber optic side polishing equipment 6. The whole process includes the following steps.

[0055] First, the transmission optical fiber 5 is placed on the first optical fiber holder 10 and the second optical fiber holder for clamping and fixing. Then, the optical fiber is straightened by the axial movement of the first tray 8 and / or the second tray to ensure that there is no uneven force during the processing.

[0056] Secondly, the computer module 1 issues an instruction to control the telescopic bracket 17 to bring the grinding wheel 16 fixed on the support platform 14 closer to the transmission optical fiber 5, and after it gets close to the transmission optical fiber 5, the grinding wheel is controlled to start rotating, and the speed can reach 50 rpm.

[0057] Third, the rotating grinding wheel 16 slowly grinds and polishes the transmission optical fiber 5 in a step-by-step manner, producing a preliminary optical fiber side-polishing structure.

[0058] Fourth, by controlling the support platform 14 to move along the transmission optical fiber 5 on the platform guide rail 15 and keeping the grinding wheel 16 to continuously perform grinding, the length of the optical fiber side-spraying structure can be adjusted; by controlling the telescopic bracket 17 to move radially along the transmission optical fiber 5 and keeping the grinding wheel 16 to continuously perform grinding, the depth of the optical fiber side-spraying structure can be adjusted.

[0059] After processing, the transmission fiber 5 and the processed fiber side-throwing structure are removed to complete the preparation. The entire processing can be automated through programming, and the entire process can be observed from the top of the fiber side-throwing device 6 through the image acquisition module 11, which is easy for the operator to monitor and operate, and greatly solves the problems of cumbersome processing procedures, insufficient processing accuracy and poor repeatability.

[0060] In another exemplary embodiment, the fiber fixing platform and side-throwing device within the aforementioned fiber side-throwing equipment 6 operate based on the motor control module 3 to process fiber side-throwing structures with specific specifications. The computer module 1 can generate control commands through programming code or manual operation, and the motor control module 3 controls the fiber side-throwing equipment 6 according to these control commands. The fiber optic spectrometer 7 has spectral dispersion capability, and its built-in grating can convert the collected visible light signals into wavelength-intensity spectral information for verifying the optical loss of the fiber side-throwing structure, and transmit it to the computer module 1 for analysis and processing. The computer module 1 can receive the spectral information transmitted from the fiber optic spectrometer 7 via the data cable 2 and visualize it on the screen to analyze whether the optical loss of the fiber side-throwing structure meets the requirements, further determining whether the product is qualified. Simultaneously, the data cable 2 receives real-time image monitoring of the fiber side-throwing process acquired by the image acquisition module 11 in the automated side-throwing module. The computer module 1 can send commands through programming operation to enable the motor control module to perform automated processing operations on the automated side-throwing module, or it can directly send commands to manufacture and modify special side-throwing structures. The entire fiber optic side-polishing system can be directly controlled by a computer module to complete the grinding and side-polishing process. It has high manufacturing precision, good repeatability, and can achieve rapid mass production, which greatly saves the cost and time of manual operation. It has important engineering value for fiber optic sensors based on fiber optic side-polishing structures and provides a production foundation for promoting the popularization and large-scale application of fiber optic sensors.

[0061] According to the various fiber optic side-throwing system embodiments provided in this application, the fiber optic side-throwing system of this application has the following technical effects.

[0062] The fiber optic side-polishing system based on grinding in this application embodiment achieves automated cutting of the fiber optic side-polishing structure through computer programming and motor drive, which greatly increases the manufacturing speed and repeatability, effectively reduces labor costs, simplifies tedious operations, lays an important manufacturing foundation for the production of fiber optic side-polishing structures, helps to promote the popularization of fiber optic sensors, and has important engineering value and market prospects.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A fiber optic side-polishing device based on grinding processing, characterized in that, The fiber optic side-throwing equipment includes: a fiber optic fixing platform and a side-throwing device; The optical fiber fixing platform is used to fix and straighten the transmission optical fiber; The side-throwing device is used to grind the processing area of ​​the transmission optical fiber. The side-throwing device includes a support platform, platform guide rails, telescopic brackets, and a grinding wheel; The support platform is movably mounted on the platform guide rail; The grinding wheel is connected to the support platform via the telescopic bracket; During processing, the length of the side throw is adjusted by moving the support platform on the platform guide rail, and the depth of the side throw is adjusted by extending and retracting the telescopic bracket.

2. The optical fiber side polishing equipment based on grinding processing according to claim 1, characterized in that, The fiber optic fixing platform includes: a first fiber optic clamp, a second fiber optic clamp, a first tray guide rail, a second tray guide rail, a first tray, and a second tray; The first tray and the second tray are movably mounted on the first tray guide rail and the second tray guide rail, respectively, and the first fiber optic clamp and the second fiber optic clamp are fixedly mounted inside the first tray and the second tray, respectively. Both the first tray guide rail and the second tray guide rail are provided with through holes. During processing, the transmission optical fiber passes through the through holes in the first tray guide rail and the second tray guide rail, and is fixed and straightened by the first optical fiber holder and the second optical fiber holder. The processing area of ​​the transmission optical fiber is located at least between the first optical fiber holder and the second optical fiber holder.

3. The optical fiber side polishing equipment based on grinding processing according to claim 1, characterized in that, The number of side-throwing devices is two, and the two side-throwing devices are set up correspondingly. The processing area for transmitting optical fibers is located between the two side-throwing devices.

4. The optical fiber side polishing equipment based on grinding processing according to claim 1, characterized in that, The fiber optic side-throwing device also includes a housing and a cover plate; The side-throwing device is located inside the housing, and the optical fiber fixing platform is set on two opposite side walls of the housing; one side of the cover plate is connected to one side of the housing by a hinge.

5. The optical fiber side polishing equipment based on grinding processing according to claim 4, characterized in that, The optical fiber side-throwing device also includes an image acquisition module, which is located on the cover plate and is used to photograph the processing area of ​​the transmission optical fiber.

6. A fiber optic side polishing system based on grinding, characterized in that, The fiber optic side-throwing system includes the fiber optic side-throwing device according to any one of claims 1-5, and the fiber optic side-throwing system further includes: a computer module, a motor control module, a light source module, and a light acquisition module; The light source module and the light acquisition module are respectively disposed at both ends of the transmission optical fiber. The light source module is used to generate an incident light signal and input the incident light signal into the transmission optical fiber. The optical acquisition module is signal-connected to the computer module. The optical acquisition module is used to detect the spectral information of the transmitted light signal after transmission through the optical fiber and send the spectral information to the computer module. The computer module is signal-connected to the motor control module. The computer module is used to analyze the spectral information, generate control commands based on the analysis results, and send the control commands to the motor control module. The motor control module is mechanically connected to the optical fiber side-throwing device; the motor control module is used to drive the optical fiber side-throwing device based on the control commands.

7. The optical fiber side polishing system based on grinding processing according to claim 6, characterized in that, In analyzing the spectral information, the computer module is specifically used for: Solve the formula based on the spectral information. To obtain the optical loss degree of the fiber side-projection structure; among which, The intensity of the transmitted light signal. The intensity of the incident light signal. The attenuation coefficient characterizes the degree of optical loss. The length of the projectile; Based on spectral information, using the formula Calculate the coupling efficiency of the fiber side-projection structure; where, For coupling efficiency.

8. The optical fiber side polishing system based on grinding according to claim 6, characterized in that, The fiber fixing platform of the fiber side-throwing equipment includes: a first fiber holder, a second fiber holder, a first tray guide rail, a second tray guide rail, a first tray, and a second tray; the side-throwing device of the fiber side-throwing equipment includes: a support platform, a platform guide rail, a telescopic bracket, and a grinding wheel. The motor control module includes: a motor controller, a first motor, a second motor, a third motor, a fourth motor, and a fifth motor; The computer module is signal-connected to the motor controller, and the motor controller is electrically connected to the drive control terminals of the first motor, the second motor, the third motor, the fourth motor, and the fifth motor. The first motor is used to drive the first tray to move on the first tray guide rail; The second motor is used to drive the second tray to move on the second tray guide rail; The third motor is used to drive the support platform to move on the platform guide rail; The fourth motor is used to drive the telescopic bracket to extend and retract; The fifth motor is used to drive the grinding wheel to rotate.

9. The optical fiber side polishing system based on grinding processing according to claim 8, characterized in that, In controlling the fiber optic side-throwing device based on the analysis results, the computer module is specifically used for: Controlling the first tray to move on the first tray guide rail and / or controlling the second tray to move on the second tray guide rail to adjust the clamping position and stress in the processing area of ​​the transmission optical fiber; controlling the support platform to move on the platform guide rail to adjust the length of the side throw; controlling the extension and retraction of the telescopic bracket to adjust the depth of the side throw; and controlling the rotation speed of the grinding wheel to adjust the speed of the side throw.

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