A high-precision optical isolator reverse loss detection device

Abstract

This invention discloses a high-precision optical isolator reverse loss detection device, belonging to the field of optical component manufacturing technology. The device includes an equipment bracket, on one side of which a reverse optical path connecting tube is detachably connected, and on the other side of which a forward optical path connecting tube is detachably connected. Notches are provided on the reverse and forward optical path connecting tubes. Depolarizing beam splitters are detachably connected near the top of the forward optical path connecting tube and near the bottom of the reverse optical path connecting tube. A moving component is installed in the notch, and a clamping component is provided on the moving component. The optical isolator is clamped inside the clamping component. Through the design of the forward and reverse optical paths, cross detection can be achieved by using two sets of optical paths, one forward and one reverse. The two sets of data are mutually verified, effectively eliminating the random errors of a single optical path.

Description

Technical Field

[0001] This invention belongs to the field of optical component manufacturing technology, and specifically relates to a high-precision optical isolator reverse loss detection device. Background Technology

[0002] As optical communication technology advances towards high speed and high capacity, reflection in the optical path has become a crucial problem that must be solved. This has led to the development of a non-reciprocal passive device—the optical isolator—that only allows light to propagate in the forward direction of the optical path. Optical isolators are widely used for long-distance and multi-wavelength high-speed transmission. In addition, specialized laboratories and research and development are also major application areas for optical isolators, primarily for noise reduction, medical imaging, mode-locked pulsed lasers, optical trapping, and more. Optical isolators are also used in sensing in industrial and building applications, as well as in the manufacturing, testing, and research and development of other communication products.

[0003] A Faraday optical isolator is a passive optical device that allows only unidirectional light to pass through. Its working principle is based on the non-reciprocity of Faraday rotation; light reflected back from an optical fiber can be effectively isolated by the isolator. Optical isolators primarily utilize the Faraday effect of magneto-optical crystals to achieve isolation of reflected light. They are characterized by low forward insertion loss, high reverse isolation, and high return loss.

[0004] Isolation is the ability of an optical isolator to suppress backlight, while backlight loss is the loss caused by backlight passing through the isolator. The two are detected in similar ways.

[0005] Patent CN111855153A discloses a testing device and method for the isolation degree of an optical isolator. The device includes a frame with a base plate, a first carrier plate, a turntable, and a second carrier plate arranged sequentially from bottom to top. At least one first reflector is mounted on the base plate, a beam splitter is mounted on the first carrier plate, the turntable is used to place the optical isolator, and a second reflector is mounted on the second carrier plate. The optical paths of the beam splitter, the optical isolator, and the second reflector are coaxial. Light emitted from a laser is reflected by at least one first reflector to the beam splitter. Light emitted from the beam splitter passes through the optical isolator to the second reflector and then returns to the beam splitter along its original optical path. A detector is mounted on the reflected optical path of the beam splitter. The invention also discloses a testing method that measures the energy value of the reflected light entering the detector before and after placing the optical isolator to obtain the optical isolation degree of the isolator.

[0006] Although this device can detect the isolation of optical isolators, most existing devices are only equipped with a single forward and a single reverse optical path, without redundant detection and cross-verification mechanisms. Once problems such as light source fluctuations, component drift, stray light interference, component aging, abnormal temperature, or vibration occur, it is very easy to produce false or missed measurements, resulting in insufficient data reliability. Summary of the Invention

[0007] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0008] To address the issue that most existing devices mentioned in the background technology are only configured with a single forward and a single reverse optical path, lacking redundant detection and cross-validation mechanisms, and are prone to false detections, missed detections, and insufficient data reliability when problems such as light source fluctuations, component drift, stray light interference, component aging, abnormal temperature, and vibration occur, the present invention adopts the following technical solution.

[0009] A high-precision optical isolator reverse loss detection device includes a supporting base plate with multiple supporting feet detachably connected to the bottom of the base plate. A supporting vertical plate is fixedly connected to the upper end of the supporting base plate, and a mounting top plate is detachably connected to the upper end of the supporting vertical plate. A reverse optical path connecting tube is detachably connected to one side of the mounting top plate and the supporting base plate, and a forward optical path connecting tube is detachably connected to the other side. Notches are provided on the reverse and forward optical path connecting tubes. A depolarizing beam splitter is detachably connected to the upper part of the forward optical path connecting tube and the lower part of the reverse optical path connecting tube. A moving component is installed in the notch, and a clamping component is provided on the moving component. An optical isolator is clamped inside the clamping component. A reflector is provided on the mounting top plate near the reverse optical path connecting tube, and a similar reflector is provided on the supporting base plate near the forward optical path connecting tube. The input end of the optical isolator faces upward. A detection tube is detachably connected to the outside of the depolarizing beam splitter, and a detector is detachably connected to the end of the detection tube.

[0010] Preferably, the moving component includes a rotating shaft rotatably connected to a support vertical plate, a support arm fixedly connected to the outer wall of the rotating shaft, and the end of the support arm rotatably connected to the clamping component.

[0011] Preferably, a positioning and fixing component is installed on the supporting vertical plate and the clamping assembly, which enables the clamping assembly to be positioned and fixed when switching optical paths.

[0012] Preferably, the positioning and fixing component includes a first magnetic block, which is detachably connected to the outer walls of the support vertical plate on both sides of the rotation axis. The clamping component is detachably connected to the outer walls of the support arm on both sides. The two ends of the support arm are magnetically attracted to the first magnetic block and the second magnetic block, respectively. When the clamping component is located on any side of the optical path, the two ends of the support arm contact and attract the first magnetic block and the second magnetic block on one side, respectively.

[0013] Preferably, there are multiple reverse optical path connectors and multiple forward optical path connectors, which are arranged in a circular array and alternately arranged. The clamping component moves along the moving component once and passes through multiple reverse optical path connectors and multiple forward optical path connectors.

[0014] Preferably, the moving component includes an annular track, which is disposed at the notch of each reverse optical path connecting tube and the forward optical path connecting tube. A rotating sleeve is rotatably connected to the outer wall of the supporting vertical plate, and multiple connecting posts are fixedly connected to the outer wall of the rotating sleeve. Each connecting post is detachably connected to the inner wall of the annular track. The clamping component is detachably connected to the inside of the annular track. By rotating the annular track, the position of the clamping component is moved, and the optical path where the optical isolator is located is changed.

[0015] Preferably, a rotating component is installed on the support vertical plate, which drives the annular track to rotate.

[0016] Preferably, the rotating assembly includes a servo motor, the outer wall of the rotating sleeve near the bottom is provided with multiple meshing tooth grooves, the outer wall of the supporting vertical plate near the bottom is detachably connected to a mounting bracket, the servo motor is detachably connected to the supporting vertical plate, the rotating end of the servo motor is detachably connected to a drive gear, the drive gear meshes with the meshing tooth grooves, an optical positioning sensor is provided on the outside of the depolarizing beam splitter, the servo motor drives the drive gear to rotate, and the meshing of the drive gear with the meshing tooth grooves drives the rotating sleeve to rotate, thereby driving the annular track to rotate, and the optical positioning sensor makes the clamping assembly aligned with the optical path.

[0017] Preferably, multiple clamping components are installed on the annular track, and each clamping component corresponds one-to-one with each reverse optical path connecting tube and each forward optical path connecting tube.

[0018] Preferably, the clamping assembly includes a first clamping block and a second clamping block. The second clamping block is rotatably connected to the support arm. A second magnetic block is detachably connected to the outer wall of the second clamping block. The second clamping block has insertion holes at the four corners near the first clamping block. Magnetic insertion posts are fixedly connected to the four corners of the outer wall of the first clamping block near the second clamping block. A magnetic piece is installed in each insertion hole. A grip handle is detachably connected to the outer wall of the first clamping block. The first clamping block and the second clamping block can be spliced ​​together by inserting the magnetic insertion post into the insertion hole and attracting it with the magnetic piece, thereby clamping the optical isolator.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. In this invention, by combining forward and reverse optical paths, the light source is transmitted to the optical isolator via a depolarizing beam splitter during detection, and then reflected back by a mirror and refracted again by the depolarizing beam splitter to the detector, forming a closed-loop optical path transmission. This ensures stable capture of the reverse loss signal. Cross detection can be achieved through two sets of optical paths, one forward and one reverse, and the two sets of data can be mutually verified, effectively eliminating the random errors of a single optical path.

[0021] 2. In this invention, multiple forward and reverse optical paths are arranged alternately in a circular array. The optical isolator circulates through multiple optical paths with the moving component to complete multiple repeated tests, further reducing system errors. At the same time, the clamping component is calibrated by magnetic positioning or optical positioning sensors to ensure that the optical isolator is precisely aligned with the optical path, avoiding the impact of movement offset on the test results and greatly improving data reliability.

[0022] 3. In this invention, the servo motor drives the rotating sleeve to rotate through the meshing of the drive gear and the meshing tooth groove, thereby driving the annular track and the clamping components to move cyclically, realizing the automated control of optical path switching, reducing manual intervention. Through multiple clamping components corresponding to multiple optical paths one by one, multiple optical isolators can be detected simultaneously. Moreover, the closed-loop design of the annular track avoids reciprocating empty strokes, making the loading, testing and unloading process flow continuously, greatly shortening the testing cycle and meeting the high-efficiency testing requirements in mass production.

[0023] 4. In this invention, through the multi-optical-path redundancy design, when a component failure in one group of optical paths causes data abnormality, the other optical paths can still independently complete the detection work. At the same time, by comparing the detection data of different optical paths, it is possible to quickly determine whether there is a fault in the optical path, reducing the risk of detection interruption. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the high-precision optical isolator reverse loss detection device in Embodiment 1 of the present invention;

[0025] Figure 2 This is a front view schematic diagram of the detection device in this invention;

[0026] Figure 3 This is a side view of the detection device in this invention.

[0027] Figure 4 This is a cross-sectional view of the detection device in this invention;

[0028] Figure 5 This is a schematic diagram of the mobile component structure in this invention;

[0029] Figure 6 This is a schematic diagram of the clamping component structure in this invention;

[0030] Figure 7This is a schematic diagram of the high-precision optical isolator reverse loss detection device in Embodiment 2 of the present invention;

[0031] Figure 8 This is a schematic diagram of the mobile component structure in this invention;

[0032] Figure 9 In this invention Figure 8 Enlarged structural diagram of section A.

[0033] The correspondence between the labels and component names in the attached figures is as follows:

[0034] 100. Support base plate; 101. Mounting top plate; 102. Reverse optical path connecting pipe; 103. Forward optical path connecting pipe; 104. Depolarizing beam splitter prism; 105. Detector; 106. Support vertical plate; 107. Reflector;

[0035] 200. Clamping assembly; 201. First clamping block; 202. Second clamping block; 203. Grip handle; 204. Magnetic insertion post;

[0036] 300. Moving component; 301. Rotating shaft; 302. First magnetic block; 303. Support arm; 304. Second magnetic block;

[0037] 400. Circular track; 401. Connecting column; 402. Rotating sleeve; 403. Optical positioning sensor; 404. Servo motor; 405. Drive gear; 406. Mounting bracket; 407. Meshing tooth groove. Detailed Implementation

[0038] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments. The present invention provides the following embodiments.

[0041] Example 1

[0042] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The diagram shown is a schematic representation of a high-precision optical isolator reverse loss detection device according to a preferred embodiment of the present invention. This high-precision optical isolator reverse loss detection device includes a supporting base plate 100. Multiple supporting feet are detachably connected to the bottom of the supporting base plate 100. A supporting vertical plate 106 is fixedly connected to the upper end of the supporting base plate 100. A mounting top plate 101 is detachably connected to the upper end of the supporting vertical plate 106. A reverse optical path connecting pipe 102 is detachably connected to one side between the mounting top plate 101 and the supporting base plate 100, and a forward optical path connecting pipe 103 is detachably connected to the other side. Notches are provided on the reverse optical path connecting pipe 102 and the forward optical path connecting pipe 103. A depolarizing beam splitter 104 is detachably connected near the top and near the bottom of the reverse optical path connector 102. A moving component 300 is installed at the notch, and a clamping component 200 is provided on the moving component 300. An optical isolator is clamped inside the clamping component 200. A reflector 107 is provided on the mounting top plate 101 near the reverse optical path connector 102, and a similar reflector 107 is provided on the supporting bottom plate 100 near the forward optical path connector 103. The input end of the optical isolator faces upward. A detection tube is detachably connected to the outside of the depolarizing beam splitter 104, and a detector 105 is detachably connected to the end of the detection tube. In this embodiment, during detection, the optical isolator is installed... Inside the clamping assembly 200, the clamping assembly 200 is initially positioned at the forward optical path connector 103. Light from above illuminates the light source, which passes through the depolarizing beam splitter 104 and then through the input end of the isolator. After reflection by the reflector 107 on the support base plate 100, it passes through the optical isolator again, and is refracted again by the depolarizing beam splitter 104 before being detected by the detector 105, which measures the power pout. A pre-set conduit is installed at the notch of the reverse optical path connector 102, and the conduit is snapped into place, sealing the notch. The detector 105 on the reverse optical path connector 102 measures the power pin, and the isolation degree ISO is calculated using a formula. After the test is completed, further steps can be taken... The moving component 300 moves the clamping component 200 to the reverse optical path connecting tube 102. The light source shines from the bottom, passes through the depolarizing beam splitter 104, and then passes through the output end of the optical isolator. It then contacts the reflector 107 on the mounting top plate 101 and is reflected. After reflection, it passes through the optical isolator again, is refracted by the depolarizing beam splitter 104, and is then detected by the detector 105. By using two sets of optical paths, one positive and one negative, the optical isolator is cross-tested, which greatly improves the accuracy of the reverse loss detection data. Furthermore, if a component on one side of the optical path is damaged, causing abnormal detection data, the other side of the optical path can still independently complete the detection of the isolator. Moreover, the comparison can also determine whether there is component damage in the optical path.

[0043] The formula is: ISO = -10log .

[0044] In order to enable the clamping component 200 to switch between two optical paths, the specific structure of the moving component 300 can be as follows: Figure 5 as well as Figure 6 In the embodiment shown, the moving component 300 includes a rotating shaft 301, which is rotatably connected to the supporting vertical plate 106. A supporting arm 303 is fixedly connected to the outer wall of the rotating shaft 301, and the end of the supporting arm 303 is rotatably connected to the clamping component 200. In this embodiment, the rotating shaft 301 enables the supporting arm 303 to rotate along the axis of the rotating shaft 301 with the clamping component 200, thereby enabling the clamping component 200 to move from one side of the optical path to the other side of the optical path. Through the rotatable connection between the supporting arm 303 and the clamping component 200, the clamping component 200 can be finely adjusted when moving, thereby enabling it to better coincide with the optical path.

[0045] If the clamping component 200 moves or shifts during the detection process, it will affect the accuracy of the detection results, and requires multiple manual adjustments, which is extremely troublesome. To enable rapid positioning of the clamping component 200, a specific structure can be adopted as follows: Figure 5 as well as Figure 6 In the embodiment shown, the support vertical plate 106 is detachably connected to the outer walls on both sides of the rotating shaft 301 with first magnetic blocks 302, and the clamping assembly 200 is detachably connected to the outer walls on both sides of the support arm 303 with second magnetic blocks 304. The two ends of the support arm 303 are magnetically attracted to the first magnetic blocks 302 and the second magnetic blocks 304 respectively. In this embodiment, when the clamping assembly 200 is located on any side of the optical path, the two ends of the support arm 303 are in contact with and attracted to the first magnetic blocks 302 and the second magnetic blocks 304 on one side respectively. This allows for quick and accurate positioning and fixation when adjusting the position of the optical isolator, without the need for multiple manual fine adjustments or additional complex locking and fixing structures.

[0046] In order to enable the clamping assembly 200 to quickly clamp the optical isolator for easy replacement, the specific structure of the clamping assembly 200 can be as follows: Figure 6In the embodiment shown, the clamping assembly 200 includes a first clamping block 201 and a second clamping block 202. The second clamping block 202 is rotatably connected to the support arm 303. A second magnetic block 304 is detachably connected to the outer wall of the second clamping block 202. The second clamping block 202 is provided with insertion holes at the four corners near the first clamping block 201. Magnetic insertion posts 204 are fixedly connected to the four corners of the outer wall of the first clamping block 201 near the second clamping block 202. A magnetic piece is installed in each insertion hole. A grip handle 203 is detachably connected to the outer wall of the first clamping block 201. In this embodiment, the first clamping block 201 and the second clamping block 202 can be spliced ​​by inserting the magnetic insertion post 204 into the insertion hole and attracting it with the magnetic piece, thereby enabling the optical isolator to be clamped quickly and removed quickly after testing. The clamping assembly 200 can be moved by gripping the handle 203 to switch the testing station.

[0047] Example 2

[0048] like Figure 7 As shown, this is a schematic diagram of a high-precision optical isolator reverse loss detection device according to another preferred embodiment of the present invention. The difference between this embodiment and the first embodiment is that multiple reverse optical path connectors 102 and forward optical path connectors 103 are provided. The multiple reverse optical path connectors 102 and forward optical path connectors 103 are arranged in a circular array and are alternately arranged. The clamping component 200 moves along the moving component 300 once and passes through multiple reverse optical path connectors 102 and forward optical path connectors 103. In this embodiment, by setting the moving component 300, each optical isolator is detected multiple times through the forward and reverse optical paths, making the detection data more accurate.

[0049] The specific structure of the moving component 300 can be as follows: Figure 7 , Figure 8 as well as Figure 9In the embodiment shown, the moving component 300 includes an annular track 400, which is disposed at the notches of each reverse optical path connecting pipe 102 and the forward optical path connecting pipe 103. A rotating sleeve 402 is rotatably connected to the outer wall of the supporting vertical plate 106, and a plurality of connecting posts 401 are fixedly connected to the outer wall of the rotating sleeve 402. Each connecting post 401 is detachably connected to the inner wall of the annular track 400. The clamping component 200 is detachably connected to the interior of the annular track 400. A plurality of meshing grooves 407 are provided on the outer wall of the rotating sleeve 402 near the bottom. A mounting bracket 406 is detachably connected to the outer wall of the supporting vertical plate 106 near the bottom. A servo motor 404 is detachably connected, and a drive gear 405 is detachably connected to the rotating end of the servo motor 404. The drive gear 405 meshes with the meshing groove 407. An optical positioning sensor 403 is provided on the outside of the depolarizing beam splitter 104. In this embodiment, the servo motor 404 drives the drive gear 405 to rotate, and the meshing of the drive gear 405 with the meshing groove 407 drives the rotating sleeve 402 to rotate, thereby driving the annular track 400 to rotate, thereby moving the position of the clamping component 200 and changing the optical path where the optical isolator is located. The optical positioning sensor 403 can ensure that the clamping component 200 is aligned with the optical path, thereby achieving precise positioning.

[0050] To achieve high-volume and rapid testing of optical isolators, the specific structure can be as follows: Figure 7 In the embodiment shown, a plurality of clamping components 200 are installed on the annular track 400. Each clamping component 200 corresponds one-to-one with each reverse optical path connecting tube 102 and forward optical path connecting tube 103. In this embodiment, by setting multiple clamping components 200, multiple optical isolators can be detected simultaneously. As the annular track 400 rotates, the optical isolators are detected and compared sequentially through multiple optical paths. This enables batch and continuous detection of optical isolators, improving detection speed and data accuracy.

[0051] The above description, in conjunction with specific 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, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted herein.

Claims

1. A high-precision optical isolator reverse loss detection device, comprising a supporting base plate (100), a plurality of supporting feet detachably connected to the bottom of the supporting base plate (100), a supporting vertical plate (106) fixedly connected to the upper end of the supporting base plate (100), and a mounting top plate (101) detachably connected to the upper end of the supporting vertical plate (106), characterized in that, A reverse optical path connecting tube (102) is detachably connected to one side of the mounting top plate (101) and the supporting base plate (100), and a forward optical path connecting tube (103) is detachably connected to the other side. Notches are provided on the reverse optical path connecting tube (102) and the forward optical path connecting tube (103). A depolarizing beam splitter (104) is detachably connected to the upper part of the forward optical path connecting tube (103) and the lower part of the reverse optical path connecting tube (102). A moving component (300) is installed in the notch. A clamping component (200) is provided on the moving component (300). An optical isolator is clamped inside the clamping component (200). A reflector (107) is provided on the mounting top plate (101) near the reverse optical path connecting tube (102). The same reflector (107) is set at the position of the support base plate (100) near the forward optical path connecting tube (103). The input end of the optical isolator faces upward. The external part of the depolarization beam splitter (104) is detachably connected to the detection tube. The end of the detection tube is detachably connected to the detector (105). Multiple reverse optical path connecting tubes (102) and forward optical path connecting tubes (103) are set. Multiple reverse optical path connecting tubes (102) and forward optical path connecting tubes (103) are arranged in a circular array. The reverse optical path connecting tubes (102) and forward optical path connecting tubes (103) are arranged alternately. The clamping component (200) moves along the moving component (300) once and passes through multiple reverse optical path connecting tubes (102) and forward optical path connecting tubes (103).

2. The high-precision optical isolator reverse loss detection device according to claim 1, characterized in that, The moving component (300) includes a rotating shaft (301) which is rotatably connected to the support vertical plate (106). A support arm (303) is fixedly connected to the outer wall of the rotating shaft (301), and the end of the support arm (303) is rotatably connected to the clamping component (200).

3. The high-precision optical isolator reverse loss detection device according to claim 2, characterized in that, Positioning and fixing components are installed on the support plate (106) and the clamping assembly (200), which enable the clamping assembly (200) to be positioned and fixed when switching optical paths.

4. The high-precision optical isolator reverse loss detection device according to claim 3, characterized in that, The positioning and fixing component includes a first magnetic block (302), which is detachably connected to the outer walls of the support vertical plate (106) on both sides of the rotating shaft (301). The clamping component (200) is detachably connected to the outer walls of the support arm (303) on both sides. The two ends of the support arm (303) are magnetically attracted to the first magnetic block (302) and the second magnetic block (304) respectively. When the clamping component (200) is located on any side of the optical path, the two ends of the support arm (303) are in contact with and attracted to the first magnetic block (302) and the second magnetic block (304) on one side respectively.

5. The high-precision optical isolator reverse loss detection device according to claim 1, characterized in that, The moving component (300) includes an annular track (400), which is disposed at the notch of each reverse optical path connecting tube (102) and the forward optical path connecting tube (103). A rotating sleeve (402) is rotatably connected to the outer wall of the supporting vertical plate (106). Multiple connecting posts (401) are fixedly connected to the outer wall of the rotating sleeve (402). Each connecting post (401) is detachably connected to the inner wall of the annular track (400). The clamping component (200) is detachably connected to the inside of the annular track (400). By rotating the annular track (400), the position of the clamping component (200) is moved, and the optical path where the optical isolator is located is changed.

6. The high-precision optical isolator reverse loss detection device according to claim 5, characterized in that, A rotating assembly is installed on the supporting vertical plate (106), which drives the annular track (400) to rotate.

7. The high-precision optical isolator reverse loss detection device according to claim 6, characterized in that, The rotating assembly includes a servo motor (404), a rotating sleeve (402) with multiple meshing grooves (407) on its outer wall near the bottom, a mounting bracket (406) detachably connected to the outer wall near the bottom of the supporting vertical plate (106), the servo motor (404) and the supporting vertical plate (106) detachably connected, a drive gear (405) detachably connected to the rotating end of the servo motor (404), the drive gear (405) meshing with the meshing grooves (407), an optical positioning sensor (403) is provided on the outside of the depolarizing beam splitter (104), the servo motor (404) drives the drive gear (405) to rotate, and the meshing of the drive gear (405) with the meshing grooves (407) drives the rotating sleeve (402) to rotate, thereby driving the annular track (400) to rotate, and the optical positioning sensor (403) makes the clamping assembly (200) aligned with the optical path.

8. The high-precision optical isolator reverse loss detection device according to claim 5, characterized in that, Multiple clamping components (200) are installed on the circular track (400), and each clamping component (200) corresponds to a reverse optical path connecting tube (102) and a forward optical path connecting tube (103).

9. The high-precision optical isolator reverse loss detection device according to claim 4, characterized in that, The clamping assembly (200) includes a first clamping block (201) and a second clamping block (202). The second clamping block (202) is rotatably connected to the support arm (303). A second magnetic block (304) is detachably connected to the outer wall of the second clamping block (202). The second clamping block (202) has insertion holes at the four corners near the first clamping block (201). Magnetic insertion posts (204) are fixedly connected at the four corners near the outer wall of the first clamping block (201) and the second clamping block (202). A magnetic piece is installed in each insertion hole. A grip handle (203) is detachably connected to the outer wall of the first clamping block (201). The magnetic insertion post (204) is inserted into the insertion hole and attracted to the magnetic piece, which can splice the first clamping block (201) and the second clamping block (202) to clamp the optical isolator.

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