Optical fiber fixing carrier and spectrum testing system

Abstract

The utility model discloses an optical fiber fixing carrier and a spectrum test system, relates to the laser detection technology field, the optical fiber fixing carrier comprises an optical fiber member, the optical fiber fixing carrier also comprises a driving member and a fixing member, the driving member is provided with a driving part, the driving part can rotate around the axis in the vertical direction, the fixing member comprises a mounting plate and a fixing part, and the fixing part can rotate around the axis in the vertical direction. One end of the mounting plate is connected with the driving part. The fixing part is arranged at one end, far away from the driving part, of the mounting plate, a mounting cavity penetrating through two opposite ends of the fixing part is formed in the fixing part, and one end of the optical fiber part is fixedly mounted in the mounting cavity. In the scheme, the optical fiber is fixed and adjusted through the optical fiber fixing carrier instead of manual work, the whole automatic test equipment can get rid of dependence on skills of operators, the consistency is better, convenience and rapidness are achieved, the performance is excellent, and the test efficiency is improved by optimizing the receiving optical fiber and the power automatic alignment system and combining with noise filtering of the receiving end. The signal-to-noise ratio of the received signal light is improved, and the accuracy of a test result is improved.

Description

Technical Field

[0001] This utility model relates to the field of laser detection technology, and in particular to an optical fiber fixing carrier and a spectral testing system. Background Technology

[0002] With the continuous development of laser technology in recent years, lasers are being used in an increasing number of material processing applications. The importance and advantages of laser processing technology are mainly reflected in its wide range of applications and its high-efficiency, high-precision processing capabilities, which can drive the transformation and upgrading of traditional industries and demonstrate enormous potential in many sectors. In particular, fiber lasers, with their advantages of miniaturization, good beam quality, strong long-term stability, and ease of achieving high power / high efficiency, play an extremely important role in various processing fields.

[0003] In the fabrication of fiber lasers, the spectrum is a crucial parameter for evaluating their performance, making its testing extremely important. The spectral characteristics of a laser directly affect its quality and long-term stability, and also influence its application in various processes. Therefore, accurately measuring the spectral characteristics of lasers is a common research topic in related industries. Currently, existing testing equipment, due to the high power of the laser signal light compared to the relatively low power tolerance of the spectrometer (typically in the 10mW range), often relies on collecting the scattered light emitted from the laser onto the power meter target to prevent equipment damage. Therefore, the angle between the receiving fiber and the power meter target is critical. Currently, this is often adjusted by operators based on experience and the measured spectrum, heavily dependent on the operator's skill. This uncertainty can affect the final test results. Utility Model Content

[0004] The main purpose of this invention is to propose an optical fiber fixing carrier and a spectral testing system, which aims to solve the problem that the fixing and adjustment of optical fibers in traditional spectral testing systems mostly rely on the operator's experience and the test spectrum for corresponding adjustments. This is highly dependent on the operator's skills, and this uncertainty can affect the final test results.

[0005] To achieve the above objectives, the present invention proposes an optical fiber fixing carrier, which includes an optical fiber component, and the optical fiber fixing carrier further includes:

[0006] A driving member having a driving part rotatable about a vertical axis; and,

[0007] The fixing component includes a mounting plate and a fixing part. One end of the mounting plate is connected to the driving part. The fixing part is located on the end of the mounting plate away from the driving part. The fixing part has a mounting cavity that extends through its two opposite ends. One end of the optical fiber component is fixedly installed in the mounting cavity.

[0008] In one embodiment, the fixing part includes a circular part and a square part, the square part is disposed at one end of the circular part, and an inner cavity is formed on the square part along the axis of the circular part, the inner cavity and the inner cavity of the circular part together form the mounting cavity;

[0009] The square portion is connected to one end of the mounting plate, and one end of the optical fiber is disposed inside the annular portion through the inner cavity.

[0010] In one embodiment, the mounting plate is L-shaped, comprising a first plate portion extending horizontally and a second plate portion extending vertically. The first plate portion is fixedly connected to the driving portion, and a mounting hole is provided on one end of the second plate portion away from the first plate portion. The square portion is mounted at the mounting hole.

[0011] In one embodiment, a fixing piece is provided on the inner side of the annular portion;

[0012] The optical fiber component includes a first optical fiber and a second optical fiber, and one end of both the first optical fiber and the second optical fiber is fixed to the fixing plate.

[0013] In one embodiment, a filter is provided on the arc-shaped inner wall of the annular portion at a position corresponding to one end of the first optical fiber and the second optical fiber.

[0014] In one embodiment, the core diameters of the first and second optical fibers are between 600 μm and 800 μm, and the corresponding cladding diameters of the first and second optical fibers are between 660 μm and 880 μm; and / or,

[0015] Both the first optical fiber and the second optical fiber have end caps on one end corresponding to the inner side of the annular portion.

[0016] In one embodiment, the first plate portion is provided with fixing holes;

[0017] The driving component is a motor component, and a carrier component is provided on the output end of the motor component. The upward end of the carrier component is provided with a mounting shaft corresponding to the fixing hole.

[0018] This utility model also includes a spectral testing system, the spectral testing system comprising:

[0019] An optical fiber fixing carrier, the optical fiber fixing carrier including an optical fiber component and a driving component, the optical fiber component including a first optical fiber and a second optical fiber, and the driving component being configured as a motor component;

[0020] An output device includes a base, a laser emitter, and a reflective structure. The laser emitter and the reflective structure are correspondingly disposed on the base. The laser emitter emits a test laser, and the reflective structure reflects the test laser. A receiving area is formed on the base corresponding to the area between the laser emitter and the reflective structure. A motor is mounted within the receiving area.

[0021] The test piece is connected to one end of the first optical fiber and the second optical fiber to perform spectral analysis on the test laser.

[0022] In one embodiment, the test piece includes a spectrometer and a computer terminal, with the first optical fiber connected to the computer terminal and the second optical fiber connected to the spectrometer.

[0023] In one embodiment, an optical power meter is also provided on the connection path of the second optical fiber.

[0024] In the technical solution of this utility model, the optical fiber fixing carrier replaces manual fixing and adjustment of the optical fiber. The entire automatic testing equipment can get rid of dependence on the operator's skills, and has better consistency, convenience and speed, and excellent performance. By optimizing the receiving optical fiber and the automatic power alignment system, combined with noise filtering at the receiving end, the signal-to-noise ratio of the received signal light is improved, the accuracy of the test results is increased, and combined with the power monitoring device, it can assist the receiving end in setting a better receiving angle, and can detect problems in time to protect the spectral detection equipment from damage. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the overall structure of an embodiment of the optical fiber fixing carrier provided by this utility model;

[0027] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0028] Figure 3 for Figure 1A schematic diagram of the rear structure of the optical fiber fixed carrier;

[0029] Figure 4 For inclusion Figure 1 Schematic diagram of the spectral testing system of the fixed carrier for optical fiber.

[0030] Description of Figure Numbers:

[0031] 100. Fiber optic mounting bracket; 1. Motor component; 11. Carrier component; 111. Mounting shaft; 2. Fixing component; 21. Mounting plate; 211. First plate section; 2111. Fixing hole; 212. Second plate section; 2121. Mounting hole; 22. Fixing part; 221. Circular part; 222. Square part; 3. Fixing piece; 4. Filter plate; 5. End cap; 6. Fiber optic component; 61. First fiber optic cable; 62. Second fiber optic cable.

[0032] 200. Spectroscopy testing system; 7. Output device; 71. Base; 72. Laser emitting component; 73. Reflective structure component; 8. Test component; 81. Computer terminal; 82. Spectrometer; 9. Optical power meter.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] With the continuous development of laser technology in recent years, lasers are being used in an increasing number of material processing applications. The importance and advantages of laser processing technology are mainly reflected in its wide range of applications and its high-efficiency, high-precision processing capabilities, which can drive the transformation and upgrading of traditional industries and demonstrate enormous potential in many sectors. In particular, fiber lasers, with their advantages of miniaturization, good beam quality, strong long-term stability, and ease of achieving high power / high efficiency, play an extremely important role in various processing fields.

[0038] In the fabrication of fiber lasers, the spectrum is a crucial parameter for evaluating their performance, making its testing extremely important. The spectral characteristics of a laser directly affect its quality and long-term stability, and also influence its application in various processes. Therefore, accurately measuring the spectral characteristics of lasers is a common research topic in related industries. Currently, existing testing equipment, due to the high power of the laser signal light compared to the relatively low power tolerance of the spectrometer (typically in the 10mW range), often relies on collecting the scattered light emitted from the laser onto the power meter target to prevent equipment damage. Therefore, the angle between the receiving fiber and the power meter target is critical. Currently, this is often adjusted by operators based on experience and the measured spectrum, heavily dependent on the operator's skill. This uncertainty can affect the final test results.

[0039] This utility model proposes an optical fiber fixing carrier 100 to solve the above problems.

[0040] Please see Figures 1 to 3In one embodiment of this utility model, the fiber fixing carrier 100 fixes one end of the fiber. The fiber fixing carrier 100 can not only fix the end of the fiber component 6, but also adjust the orientation of the end of the fiber component 6 so that the end of the fiber component 6 can correspond to the optical path formed by the test laser during the test, thereby increasing the signal light that can be received during the fiber test, increasing the signal-to-noise ratio, and improving the test effect. Specifically, the fiber optic fixing carrier 100 includes a driving component and a fixing component 2. The driving component has a movable driving part, which can drive the mounting plate 21 to rotate synchronously around the vertical axis during operation. The fixing part 22 is located at the upward end of the mounting plate 21 and has a mounting cavity inside. The mounting cavity is basically horizontally through-hole. One end of the fiber optic component 6 is fixedly installed in the mounting cavity. By fixing the one end of the fiber optic component 6 in a retractable manner through the fixing part 22, the one end of the fiber optic component 6 can be protected to prevent accidental contact of the fixing position from affecting the orientation of the end of the fiber optic component 6. During actual testing, the test laser enters the fixing part 22 from the opening at one end of the mounting cavity and is then received by the one end of the fiber optic component 6. In order to ensure that the fiber optic component 6 can better receive the light signal of the test laser, the mounting plate 21 has a certain vertical height. In specific settings, it can be set according to the actual transmission optical path of the test laser so that the fiber optic component 6 can better receive the signal light. This embodiment replaces the manual adjustment of the fiber optic component 6's end orientation. Traditionally, during testing, one end of the fiber optic component 6 is fixed to a vertically oriented block structure by adhesive. This method suffers from poor stability and lacks flexibility in adjusting the fiber optic component 6's orientation, resulting in generally poor signal light reception. In this embodiment, after the fiber optic component 6 is fixed to the fixing part 22, the driving component adjusts the orientation of the fiber optic component 6's end during operation. In actual control, automatic control can be achieved using a corresponding testing structure. For example, a detection device can detect the real-time light intensity at the end of the fiber optic component 6, and the driving component can slowly rotate the fiber optic component 6. When the detection device detects that the light signal intensity has reached its maximum value, the driving component can be stopped, thus fixing the orientation of the fiber optic component 6 at its current position. This structure eliminates many inconveniences associated with traditional manual operation, effectively improving the convenience and stability of the testing process and enhancing the reliability of the test results.

[0041] The fixing part 22 specifically comprises two parts of different shapes. The end for receiving optical signals is a circular part 221, and the end for fixing and mounting is a square part 222. The square part 222 has an inner cavity extending through both ends, and one end of the inner cavity is connected to the inner cavity of the circular part 221. Specifically, when installing the optical fiber 6, one end of the optical fiber 6 extends into the inner side of the circular part 221 through one opening of the inner cavity, and is then installed in the circular part 221 using a corresponding fixing structure. The optical signal enters the mounting cavity through one opening of the circular part 221, and some light rays enter from one end of the optical fiber 6, thereby completing the reception of the optical signal.

[0042] Specifically, the fixing structure is a fixing plate 3, and the optical fiber component 6 is also configured as two. One end of the first optical fiber 61 and the second optical fiber 62 are fixed on the fixing plate 3, thereby preventing the ends of the two optical fibers from wobbling inside the annular portion 221. In practice, the fixing plate 3 and the annular portion 221 can be configured as a separable structure. In the actual installation process, firstly, one end of the two optical fibers is inserted from the end of the mounting cavity away from the annular portion 221, and the ends of the two optical fibers are inserted from the end of the annular portion 221. Then, one end of the first optical fiber 61 and the second optical fiber 62 are fixed on the fixing plate 3. Finally, the fixing plate 3 is installed inside the annular portion 221 to complete the fixed installation of the first optical fiber 61 and the second optical fiber 62.

[0043] Furthermore, considering that the fabrication and testing of existing fiber lasers are not conducted in a darkroom environment, they are susceptible to the influence of visible light in the environment, resulting in background noise that affects the final test results. Therefore, a filter 4 is provided inside the annular portion 221 at one end corresponding to the first fiber 61 and the second fiber 62. The filter 4 achieves high signal light transmission and high background noise reflection, ensuring that the system is not affected by noise such as visible light. This helps improve the accuracy of the test results.

[0044] To further improve the signal light reception performance of the first optical fiber 61 and the second optical fiber 62, the optical fibers used in this scheme have a core diameter between 600µm and 800µm, and a corresponding cladding diameter between 660µm and 880µm. Using a larger diameter optical fiber structure for signal reception and transmission effectively improves the limited light reception capability of traditional 50µm core diameter optical fiber structures. Furthermore, this scheme also includes end caps 5 at the receiving ends of the first optical fiber 61 and the second optical fiber 62. These end caps 5 are horn-shaped and diffuse outwards, further increasing the light reception angle and thus receiving more signal light, thereby increasing the signal-to-noise ratio.

[0045] For ease of installation, in this embodiment, the mounting plate 21 is specifically configured as an L-shaped structure, which includes a first plate portion 211 extending horizontally and a second plate portion 212 extending vertically. During installation, the first plate portion 211 is fixedly connected to the driving part, and the second plate portion 212 has a mounting hole 2121 at one end away from the first plate portion 211. The square portion 222 is installed at the mounting hole 2121.

[0046] Specifically, the driving component is a motor component 1, and the output end of the motor component 1 is provided with a carrier component 11. During installation, the fixing holes 2111 on the first plate portion 211 are aligned with the mounting shaft 111 on the upper end of the carrier component 11 for installation. The fixing holes 2111 and the mounting shaft 111 are interference fits, allowing for direct downward pressing during installation. In addition to the motor component 1 in the above embodiment, the structure of the driving component can also be configured according to the actual production conditions, and a linkage structure or a pneumatic structure can also be selected and used.

[0047] This utility model also proposes a spectral testing system 200, with reference to... Figures 1 to 4 The spectral testing system 200 includes an optical fiber fixing carrier 100, the specific structure of which is as described in the above embodiments. Since this spectral testing system 200 adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here. The spectral testing system 200 also includes an output device 7 and a test piece 8. Specifically, during testing, the laser emitter 72 emits the laser to be tested. Since the power of the test laser is generally high, while the spectrometer 82 can only withstand relatively low power (generally in the 10mW range), to prevent damage to the test piece 8, the scattered light emitted by the laser onto the power meter target surface is often collected for testing. In this embodiment, the reflective structure 73 is positioned correspondingly to the laser emitter 72. The reflective structure 73 reflects the signal light. The motor 1 is installed in the receiving area between the reflective structure 73 and the laser emitter 72. During actual testing, the motor 1 drives the first optical fiber 61 and the second optical fiber 62 to rotate, aligning the ends of the first optical fiber 61 and the second optical fiber 62 with the optical path direction of the signal light. The reflected signal light is then received through the two optical fibers and transmitted to the test piece 8 for relevant testing. Mounting the laser emitter 72 and the reflective structure 73 on the same base 71 also ensures the stability of their positions.

[0048] This design incorporates two optical fibers. Firstly, this increases the light-receiving area of ​​the fiber optic structure. Secondly, it protects the testing equipment, including the spectrometer 82 and the computer terminal. During actual testing, one fiber is used to detect power, and the other connects to the spectrometer 82 to transmit signal light. Although there is a slight difference in the detected power, this is negligible considering the small size of the optical fibers themselves, with the maximum inner cladding size on the order of millimeters. The effect can be confirmed through testing before use. Specifically, the test component 8 includes the spectrometer 82 and the computer terminal 81. The first optical fiber 61 is connected to the computer terminal 81, and the second optical fiber 62 is connected to the spectrometer 82. These two parallel optical fibers are used to detect the scattered light reflected from the power meter target surface for corresponding spectral testing and power protection. Specifically, the optical power meter 9 on the second optical fiber 62 can acquire the actual power on the second optical fiber 62 in real time. If the power exceeds the limit, the laser power supply can be cut off in time, thereby protecting the equipment. During the specific testing process, the motor 1 can drive the receiving ends of the two optical fibers to rotate slowly. During this process, the optical power meter 9 can obtain the intensity of the reflected signal light at the corresponding corner in real time. When the intensity of the reflected signal light that the two optical fibers at the current corner can receive is the maximum, the motor 1 stops rotating, and the experiment can be carried out at the current angle. In addition, if the power exceeds the limit as mentioned above during the rotation of the motor 1, the power-off protection strategy mentioned above will be implemented. Through the above control method, automatic light-finding and alignment can be achieved throughout the entire testing process, which is conducive to further improving the automation level of the entire testing structure and thus improving the convenience of use.

[0049] Another solution for power monitoring described above is to use optical fiber splitters. This involves setting up a splitter in the optical fiber path to separate a certain proportion of light energy, and then inferring the light power entering the spectrometer 82 based on the light energy measured in the two output paths.

[0050] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An optical fiber fixing carrier, comprising an optical fiber component, characterized in that, The fiber optic mounting device also includes: A driving member having a driving part rotatable about a vertical axis; and, The fixing component includes a mounting plate and a fixing part. One end of the mounting plate is connected to the driving part. The fixing part is located on the end of the mounting plate away from the driving part. The fixing part has a mounting cavity that extends through its two opposite ends. One end of the optical fiber component is fixedly installed in the mounting cavity.

2. The optical fiber fixing carrier as described in claim 1, characterized in that, The fixing part includes a circular part and a square part. The square part is located at one end of the circular part, and an inner cavity is formed on the square part along the axis of the circular part. The inner cavity and the inner cavity of the circular part together form the mounting cavity. The square portion is connected to one end of the mounting plate, and one end of the optical fiber is disposed inside the annular portion through the inner cavity.

3. The optical fiber fixing carrier as described in claim 2, characterized in that, The mounting plate is L-shaped, comprising a first plate portion extending horizontally and a second plate portion extending vertically. The first plate portion is fixedly connected to the driving portion. The second plate portion has a mounting hole at one end away from the first plate portion, and the square portion is mounted at the mounting hole.

4. The optical fiber fixing carrier as described in claim 3, characterized in that, A fixing piece is provided on the inner side of the annular portion; The optical fiber component includes a first optical fiber and a second optical fiber, and one end of both the first optical fiber and the second optical fiber is fixed to the fixing plate.

5. The optical fiber fixing carrier as described in claim 4, characterized in that, A filter is provided on the arc-shaped inner wall of the annular portion at one end corresponding to the first optical fiber and the second optical fiber.

6. The optical fiber fixing carrier as described in claim 4, characterized in that, The core diameters of the first and second optical fibers are between 600 μm and 800 μm, and the corresponding cladding diameters of the first and second optical fibers are between 660 μm and 880 μm; and / or, Both the first optical fiber and the second optical fiber have end caps on one end corresponding to the inner side of the annular portion.

7. The optical fiber fixing carrier as described in claim 4, characterized in that, The first plate has fixing holes; The driving component is a motor component, and a carrier component is provided on the output end of the motor component. The upward end of the carrier component is provided with a mounting shaft corresponding to the fixing hole.

8. A spectral testing system, characterized in that, include: An optical fiber fixing carrier, as described in any one of claims 1-6, wherein the optical fiber fixing carrier includes an optical fiber component and a driving component, the optical fiber component includes a first optical fiber and a second optical fiber, and the driving component is configured as a motor component; The output device includes a base, a laser emitter, and a reflective structure. The laser emitter and the reflective structure are correspondingly disposed on the base. The laser emitter is used to emit a test laser, and the reflective structure is used to reflect the test laser. A receiving area is formed on the base corresponding to the area between the laser emitter and the reflective structure. The motor is installed in the receiving area. as well as, The test piece is connected to one end of the first optical fiber and the second optical fiber to perform spectral analysis on the test laser.

9. The spectral testing system as described in claim 8, characterized in that, The test piece includes a spectrometer and a computer terminal, with the first optical fiber connected to the computer terminal and the second optical fiber connected to the spectrometer.

10. The spectral testing system as described in claim 9, characterized in that, An optical power meter is also installed on the connection path of the second optical fiber.

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