Testing device for detecting insertion loss isolation degree of isolator

Abstract

The invention relates to the technical field of isolation measurement, in particular to a testing device for detecting the insertion loss isolation of an isolator, which comprises a base, a laser, an iris diaphragm, a polarizer, a polarization analyzer and a detection joint, and is characterized in that the base is provided with a plurality of mounting rods, each mounting rod is provided with a mounting port, and a mounting plate is slidably inserted in each mounting port; a penetrating opening is formed in the surface of the mounting plate, and a positioning assembly used for fixing is arranged on the surface of the mounting plate; a plurality of sliding grooves are formed in the upper surface of the base, first threaded rods are horizontally and rotationally installed in the sliding grooves, sliding plates are symmetrically connected to the first threaded rods in a threaded and sleeving mode, I-shaped blocks are fixedly installed at the top ends of the sliding rods, inclined blocks are symmetrically and fixedly installed on the lower surface of the installation plate, and inclined openings are formed in the surfaces of the inclined blocks. And the plurality of I-shaped blocks are respectively arranged in the plurality of inclined openings in a sliding manner. And the detection tool can be rapidly controlled to move vertically until the detection tool moves to a proper position height, so that the insertion loss isolation test efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of isolation measurement, and in particular to a testing device for detecting the insertion loss isolation of an isolator. Background Art

[0002] Isolator is an important component widely used in electronic communication systems. It is used to prevent the reverse transmission of signals and ensure the stability and reliability of the system. Insertion loss and isolation are two key performance indicators of isolators, representing the isolation ability of isolators for reverse transmission light. Therefore, it is necessary to accurately detect these two parameters through test equipment, which is crucial to evaluate the performance of isolators.

[0003] Existing testing devices include detection tools such as lasers, variable apertures, polarizers, analyzers, and detection connectors. During the process of testing the insertion loss and isolation of the isolator, the height positions of these detection tools need to be adjusted multiple times, but the testing device cannot quickly adjust these devices to the required height positions, resulting in low test efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the following shortcomings in the prior art: the existing testing device includes detection tools such as a laser, a variable aperture, a polarizer, an analyzer, and a detection joint. In the process of detecting the insertion loss and isolation of an isolator, the height positions of these detection tools need to be adjusted multiple times, but the testing device cannot quickly adjust these devices to the required height positions, resulting in low test efficiency. A testing device for detecting the insertion loss and isolation of an isolator is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A test device for detecting the insertion loss isolation of an isolator, comprising a base, a laser, an iris diaphragm, a polarizer, an analyzer and a detection joint, wherein a plurality of U-shaped mounting rods are fixedly mounted on the upper surface of the base, a mounting opening is provided on the upper surface of the mounting rod, a mounting plate is slidably inserted in the mounting opening, a through opening is provided on the surface of the mounting plate, the laser, the iris diaphragm, the polarizer, the analyzer and the detection joint are respectively located in the plurality of through openings, a positioning assembly for fixing is provided on the surface of the mounting plate, an L-shaped support rod is fixedly mounted on the side wall of the base, a display is fixedly mounted on the top of the support rod, and the display is electrically connected to the detection joint;

[0007] The upper surface of the base is provided with multiple slide grooves, and the multiple slide grooves are respectively located under the multiple mounting rods. A first threaded rod with opposite thread directions at the left and right ends is horizontally rotatably installed in the slide groove, a slide plate is symmetrically threaded on the first threaded rod, an I-shaped block is fixedly installed on the top of the slide rod, an inclined block is symmetrically fixedly installed on the lower surface of the mounting plate, an inclined opening is provided on the surface of the inclined block, and the multiple I-shaped blocks are respectively slidably arranged in the multiple inclined openings, a rotating rod is fixedly installed on one end of the first threaded rod, and one end of the rotating rod passes through the base and is fixedly installed with a first adjusting wheel.

[0008] Preferably, the positioning assembly includes a plurality of U-shaped positioning rods and a pressing component, the surface of the mounting plate is provided with a plurality of rectangular openings in a circular shape with the through opening as the center, a sliding rod is vertically fixed in the rectangular opening, the plurality of positioning rods are respectively slidably mounted on the plurality of sliding rods and connected to the rectangular opening through a telescopic component, and the pressing component is used to control the plurality of positioning rods to move together.

[0009] Preferably, the telescopic component comprises a telescopic spring sleeved on the sliding rod, and two ends of the telescopic spring are respectively fixedly connected to the surface of the positioning rod and the rectangular opening wall.

[0010] Preferably, the pressure component includes a second threaded rod rotatably mounted on the surface of the mounting plate and a pressure ring threadedly sleeved on the second threaded rod, the pressure ring is restricted in rotation by a limiting component, an inclined plate is fixedly mounted on the surface of the positioning rod, the surface of the pressure ring is in sliding contact with the inclined surfaces of multiple inclined plates, and a second adjusting wheel is fixedly mounted on one end of the second threaded rod.

[0011] Preferably, the limiting component comprises a plurality of limiting rods fixedly mounted horizontally on the surface of the mounting plate, and the pressure ring is slidably sleeved on the plurality of limiting rods.

[0012] Preferably, a circular disk is fixedly sleeved on both the polarizer and the analyzer, and a circular opening is symmetrically opened on the surface of the circular disk. An adsorption component is arranged in the circular opening, and the adsorption component is used to attract the circular disk to the mounting plate.

[0013] Preferably, the adsorption assembly includes a hollow rod with a closed end and a suction cup fixedly installed at the open end of the hollow rod. The hollow rod is slidably installed in the circular opening. The position of the suction cup corresponds to that of the mounting plate. A rotating opening is opened at one closed end of the hollow rod. A desorption assembly is arranged in the rotating opening. The desorption assembly is used for contact with the adsorption of the suction cup.

[0014] Preferably, the desorption assembly includes a rotating shaft sealed and rotatably installed in the rotating port and a sealing plate slidably installed on the inner wall of the hollow rod, the surface of the hollow rod is provided with an arc-shaped air vent for gas circulation, the sealing plate is used to seal the air vent, one end of the rotating shaft located in the hollow rod is fixedly connected to the surface of the sealing plate through a connecting rod, and the end of the rotating shaft located outside the hollow rod is fixedly installed with a rotating block, and the rotating block is connected to the hollow rod through an elastic component.

[0015] Preferably, the elastic component comprises a torsion spring sleeved on the rotating shaft, and two ends of the torsion spring are respectively fixedly connected to the surface of the rotating block and one end of the hollow rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Through the cooperation among the mounting rod, the positioning assembly, the first threaded rod, the slide plate, the I-shaped block and the inclined plate, the detection tool can be quickly controlled to move vertically without releasing the fixation of the detection tool until it moves to a suitable position height, thereby improving the efficiency of the insertion loss isolation test;

[0018] 2. The positioning component can position the detection tools of different diameters. The positionable detection tools are no longer of a certain size, which improves the practicality of the device;

[0019] 3. With the cooperation between the disc and the adsorption component, after the polarizer or analyzer is rotated to a suitable angle, it can assist in fixing the polarizer or analyzer, so as to avoid the loosening of the positioning component on the polarizer or analyzer during the test, causing the polarizer or analyzer to rotate, thereby affecting the accuracy of the test and causing deviations in the final test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front three-dimensional structure of a test device for detecting the insertion loss isolation of an isolator proposed by the present invention;

[0021] Figure 2 A top-down perspective structural diagram of a test device for detecting the insertion loss isolation of an isolator proposed by the present invention;

[0022] Figure 3 A schematic diagram of the back three-dimensional structure of a test device for detecting the insertion loss isolation of an isolator proposed by the present invention;

[0023] Figure 4 A schematic diagram of a partial three-dimensional structure of an adsorption component in a test device for detecting the insertion loss isolation of an isolator proposed by the present invention;

[0024] Figure 5It is a schematic diagram of a partial three-dimensional structure of a mounting rod, a mounting plate and a first threaded rod in a test device for detecting the insertion loss isolation of an isolator proposed by the present invention;

[0025] Figure 6 for Figure 1 The enlarged structural diagram at A in the middle;

[0026] Figure 7 for Figure 2 The enlarged structural diagram at B in the middle;

[0027] Figure 8 for Figure 3 The enlarged structural diagram at C in the middle;

[0028] Fig. 9 for Figure 5 Enlarged structural diagram at point D in the middle.

[0029] In the figure: 1 base, 2 laser, 3 variable aperture, 4 polarizer, 5 analyzer, 6 detection joint, 7 mounting rod, 8 mounting plate, 9 through-hole, 10 slide groove, 11 first threaded rod, 12 slide plate, 13 I-shaped block, 14 oblique block, 15 oblique mouth, 16 rotating rod, 17 positioning rod, 18 rectangular mouth, 19 sliding rod, 20 telescopic spring, 21 second threaded rod, 22 pressure ring, 23 oblique plate, 24 limiting rod, 25 disk, 26 hollow rod, 27 suction cup, 28 rotating shaft, 29 blocking plate, 30 vent, 31 torsion spring, 32 support rod, 33 display. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Reference Figure 1-Figure 9 A test device for detecting the insertion loss isolation of an isolator, comprising a base 1, a laser 2, an iris 3, a polarizer 4, an analyzer 5 and a detection joint 6. A plurality of U-shaped mounting rods 7 are fixedly installed on the upper surface of the base 1. A mounting opening is provided on the upper surface of the mounting rod 7. A mounting plate 8 is slidably inserted in the mounting opening. A through opening 9 is provided on the surface of the mounting plate 8. The laser 2, the iris 3, the polarizer 4, the analyzer 5 and the detection joint 6 are respectively located in the plurality of through openings 9. From left to right, they are the detection joint 6, the analyzer 5, the isolator to be tested, the polarizer 4, the iris 3 and the laser 2. A positioning component for fixing is provided on the surface of the mounting plate 8. An L-shaped support rod 32 is fixedly installed on the side wall of the base 1. A display 33 is fixedly installed on the top of the support rod 32. The display 33 is electrically connected to the detection joint 6.

[0032] A plurality of slide grooves 10 are provided on the upper surface of the base 1, and the plurality of slide grooves 10 are respectively located below the plurality of mounting rods 7. A first threaded rod 11 with opposite thread directions at the left and right ends is horizontally rotatably installed in the slide groove 10. A slide plate 12 is symmetrically threadedly sleeved on the first threaded rod 11, and an I-shaped block 13 is fixedly installed on the top of the slide plate 12. An inclined block 14 is symmetrically fixedly installed on the lower surface of the mounting plate 8, and an inclined opening 15 is provided on the surface of the inclined block 14. The plurality of I-shaped blocks 13 are respectively slidably arranged in the plurality of inclined openings 15. A rotating rod 16 is fixedly installed at one end of the first threaded rod 11, and one end of the rotating rod 16 passes through the base 1 and is fixedly installed with a first adjusting wheel.

[0033] By rotating the first threaded rod 11, the two slides 12 symmetrically threadedly sleeved on the first threaded rod 11 will move laterally relative to each other, and the I-shaped block 13 located at the top of the slide 12 will also slide in the bevel 15. Under the action of the inclined surface pressure, when the two slides 12 approach each other, the mounting plate 8 will move upward, and when the two slides 12 move away from each other, the mounting plate 8 will move downward. The detection tool positioned by the positioning component can be quickly controlled to move vertically until it moves to a suitable position height, thereby improving the efficiency of the insertion loss isolation test.

[0034] The positioning assembly includes a plurality of U-shaped positioning rods 17 and a pressing component. The surface of the mounting plate 8 is provided with a plurality of rectangular openings 18 in a circular shape with the through opening 9 as the center. A sliding rod 19 is vertically fixedly installed in the rectangular opening 18. The plurality of positioning rods 17 are respectively slidably mounted on the plurality of sliding rods 19 and connected to the rectangular opening 18 through a telescopic component. The telescopic component includes a telescopic spring 20 mounted on the sliding rod 19. The two ends of the telescopic spring 20 are respectively fixedly connected to the surface of the positioning rod 17 and the wall of the rectangular opening 18. The pressing component is used to control the plurality of positioning rods 17. The pressing component includes a second threaded rod 21 rotatably mounted on the surface of the mounting plate 8 and a pressing ring 22 threadedly sleeved on the second threaded rod 21. The pressing ring 22 is restricted in rotation by a limiting component. The limiting component includes a plurality of limiting rods 24 horizontally fixedly mounted on the surface of the mounting plate 8. The pressing ring 22 is slidably sleeved on the plurality of limiting rods 24. An inclined plate 23 is fixedly mounted on the surface of the positioning rod 17. The surface of the pressing ring 22 is in sliding contact with the inclined surfaces of the plurality of inclined plates 23. A second adjusting wheel is fixedly mounted on one end of the second threaded rod 21.

[0035] When positioning the detection tools, first place them in the through-hole 9, and then rotate the second threaded rod 21. At this time, the pressure ring 22 threadedly sleeved on the second threaded rod 21 will move laterally under the limiting action of multiple limiting rods 24. During the lateral movement, the surface of the pressure ring 22 will slide in contact with the inclined surfaces of multiple inclined plates 23. Under the action of the inclined surface pressure, the multiple positioning rods 17 will move closer to or away from each other. When the pressure ring 22 moves in the direction close to the mounting plate 8, under the action of the inclined surface pressure, the multiple positioning rods 17 will move closer to each other, and when the pressure ring 22 moves in the direction away from the mounting plate 8, the pressure force of the pressure ring 22 on the inclined plate 23 becomes weaker, and the multiple positioning rods 17 will move away from each other under the elastic potential energy of the multiple telescopic springs 20 until the multiple positioning rods 17 are tightly against the surface of the detection tool to be positioned. Detection tools of different diameters can be positioned, and the locatable detection tools are no longer of a certain size, thereby improving the practicality of the device.

[0036] The polarizer 4 and the analyzer 5 are both fixedly sleeved with a disk 25, and a circular opening is symmetrically opened on the surface of the disk 25, and an adsorption component is arranged in the circular opening, and the adsorption component is used to attract the disk 25 to the mounting plate 8, and the adsorption component includes a hollow rod 26 with a closed end and a suction cup 27 fixedly installed at the open end of the hollow rod 26, and the hollow rod 26 is slidably installed in the circular opening, and the position of the suction cup 27 corresponds to the mounting plate 8. A rotating opening is opened at one end of the hollow rod 26 with a closed end, and a desorption component is arranged in the rotating opening, and the desorption component is used for contacting the adsorption of the suction cup 27, and the desorption component includes a sealed rotating mounting on the rotating The hollow rod 26 has an arc-shaped vent 30 for gas circulation on its surface, and the sealing plate 29 is used to seal the vent 30. One end of the rotating shaft 28 located inside the hollow rod 26 is fixedly connected to the surface of the sealing plate 29 through a connecting rod, and one end of the rotating shaft 28 located outside the hollow rod 26 is fixedly installed with a rotating block, which is connected to the hollow rod 26 through an elastic component. The elastic component includes a torsion spring 31 sleeved on the rotating shaft 28, and the two ends of the torsion spring 31 are respectively fixedly connected to the surface of the rotating block and one end of the hollow rod 26.

[0037] The polarizer 4 and the analyzer 5 need to be rotated during the detection of the insertion loss isolation of the isolator. When they are rotated to a suitable angle, they are first fixed by multiple positioning rods 17, and then the hollow rod 26 is controlled to move horizontally until the suction cup 27 is tightly against the surface of the mounting plate 8. The suction cup 27 will be deformed by the pressing force, and the gas in the suction cup 27 will slip out from the gap between the suction cup 27 and the contact surface of the mounting plate 8, thereby completing the adsorption, which plays an auxiliary role in fixing the polarizer 4 or the analyzer 5, and avoids the loosening of the positioning component on the polarizer 4 or the analyzer 5 during the test, causing the polarizer 4 or the analyzer 5 to rotate, thereby affecting the accuracy of the test and causing deviations in the final test results.

[0038] When the adsorption needs to be released, it is only necessary to rotate the rotating shaft 28 to control the sealing plate 29 to no longer cover the vent 30, so that the vent 30 is in an open state, and the gas in the outside will enter the hollow rod 26 from the vent 30, thereby automatically releasing the adsorption between the suction cup 27 and the mounting plate 8. When the rotating shaft 28 is released, the rotating shaft 28 will rotate and reset with the sealing plate 29 under the elastic potential energy of the torsion spring 31, and the sealing plate 29 will cover the vent 30 again.

[0039] First, fix the laser 2, variable aperture 3, polarizer 4, analyzer 5 and detection joint 6 in the multiple through-holes 9 according to the correct positions, then turn on the power and laser 2, the laser 2 emits laser in the direction of the variable aperture 3, and after waiting for the laser to stabilize, control the laser source emitted by the laser 2 to keep the same height with the detection joint 6 on the other side by rotating the first threaded rod 11, adjust the left and right deviations of the laser 2 to be on the same straight line with the left and right deviations of the detection joint 6, and after ensuring the consistency of the optical paths, control the analyzer 5 and polarizer 4 to be at the same level by rotating the first threaded rod 11, so that they measure and form parallel polarized light, and record its maximum transmitted light intensity.

[0040] Then adjust the polarizer 5 to ninety degrees so that its measurement system forms orthogonal polarization, measure and record the minimum transmitted light intensity, fix the isolator to be tested in the opening 9 between the polarizer 5 and the polarizer 4, and place the incident light from N to S in the direction of the magnetic field; place the crystal in the magnetic field, adjust the polarizer 5 and the position of the crystal in the magnetic field to a rotation angle of forty-five degrees, remove the polarizer 5, install a polarizing prism at the front end of the isolator to keep it consistent with the polarizer 4 to obtain the maximum light intensity, connect the isolator in the same horizontal direction in reverse, install a polarizing prism at its front end and adjust it to a certain position to obtain the minimum light intensity, measure the isolation of the object by the maximum light intensity and the minimum light intensity, and the measured data will be displayed on the display 33.

[0041] In the present invention, by rotating the first threaded rod 11, the two slides 12 symmetrically threadedly sleeved on the first threaded rod 11 will move laterally relative to each other, and the I-shaped block 13 located at the top of the slide 12 will also slide in the bevel 15. Under the action of the inclined surface pressure, when the two slides 12 approach each other, the mounting plate 8 will move upward, and when the two slides 12 move away from each other, the mounting plate 8 will move downward. The detection tool positioned by the positioning component can be quickly controlled to move vertically until it moves to a suitable position height, thereby improving the efficiency of the insertion loss isolation test.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A test device for detecting the insertion loss isolation of an isolator, comprising a base (1), a laser (2), a variable aperture (3), a polarizer (4), an analyzer (5) and a detection connector (6), characterized in that: A plurality of U-shaped mounting rods (7) are fixedly mounted on the upper surface of the base (1); a mounting opening is provided on the upper surface of the mounting rod (7); a mounting plate (8) is slidably inserted in the mounting opening; a through opening (9) is provided on the surface of the mounting plate (8); the laser (2), the variable aperture (3), the polarizer (4), the analyzer (5) and the detection connector (6) are respectively located in the plurality of through openings (9); a positioning assembly for fixing is provided on the surface of the mounting plate (8); an L-shaped support rod (32) is fixedly mounted on the side wall of the base (1); a display (33) is fixedly mounted on the top of the support rod (32); and the display (33) is electrically connected to the detection connector (6); The upper surface of the base (1) is provided with a plurality of slide grooves (10), and the plurality of slide grooves (10) are respectively located below the plurality of mounting rods (7). A first threaded rod (11) with opposite thread directions at the left and right ends is horizontally rotatably installed in the slide groove (10), a slide plate (12) is symmetrically threadedly sleeved on the first threaded rod (11), and a work-shaped block (13) is fixedly installed on the top of the slide plate (12), an inclined block (14) is symmetrically fixedly installed on the lower surface of the mounting plate (8), and an inclined opening (15) is provided on the surface of the inclined block (14), and the plurality of work-shaped blocks (13) are respectively slidably arranged in the plurality of inclined openings (15), and a rotating rod (16) is fixedly installed at one end of the first threaded rod (11), and one end of the rotating rod (16) passes through the base (1) and is fixedly installed with a first adjusting wheel.

2. A test device for detecting the insertion loss isolation of an isolator according to claim 1, characterized in that: The positioning assembly comprises a plurality of U-shaped positioning rods (17) and a pressing component. The surface of the mounting plate (8) is provided with a plurality of rectangular openings (18) in a circular shape with the through opening (9) as the center. A sliding rod (19) is vertically fixedly installed in the rectangular opening (18). The plurality of positioning rods (17) are respectively slidably mounted on the plurality of sliding rods (19) and connected to the rectangular opening (18) via a telescopic component. The pressing component is used to control the plurality of positioning rods (17) to move together.

3. A test device for detecting the insertion loss isolation of an isolator according to claim 2, characterized in that: The telescopic component comprises a telescopic spring (20) sleeved on a slide rod (19), and two ends of the telescopic spring (20) are respectively fixedly connected to the surface of the positioning rod (17) and the wall of the rectangular opening (18).

4. A test device for detecting the insertion loss isolation of an isolator according to claim 2, characterized in that: The pressing component comprises a second threaded rod (21) rotatably mounted on the surface of the mounting plate (8) and a pressing ring (22) threadedly sleeved on the second threaded rod (21); the pressing ring (22) is restricted in rotation by a restricting component; an inclined plate (23) is fixedly mounted on the surface of the positioning rod (17); the surface of the pressing ring (22) is in sliding contact with the inclined surfaces of a plurality of inclined plates (23); and a second adjusting wheel is fixedly mounted on one end of the second threaded rod (21).

5. A test device for detecting the insertion loss isolation of an isolator according to claim 4, characterized in that: The limiting component comprises a plurality of limiting rods (24) fixedly mounted horizontally on the surface of the mounting plate (8), and the pressing ring (22) is slidably sleeved on the plurality of limiting rods (24).

6. A test device for detecting the insertion loss isolation of an isolator according to claim 1, characterized in that: A circular disk (25) is fixedly sleeved on both the polarizer (4) and the analyzer (5), and a circular opening is symmetrically provided on the surface of the circular disk (25). An adsorption component is provided in the circular opening, and the adsorption component is used to attract the circular disk (25) and the mounting plate (8).

7. A test device for detecting the insertion loss isolation of an isolator according to claim 6, characterized in that: The adsorption component comprises a hollow rod (26) with a closed end and a suction cup (27) fixedly mounted on the open end of the hollow rod (26); the hollow rod (26) is slidably mounted in the circular opening; the suction cup (27) corresponds to the position of the mounting plate (8); a rotating opening is provided at one end of the hollow rod (26) with a closed end; a desorption component is arranged in the rotating opening; the desorption component is used for contacting the suction cup (27) for adsorption.

8. A test device for detecting the insertion loss isolation of an isolator according to claim 7, characterized in that: The desorption component comprises a rotating shaft (28) which is sealingly rotatably mounted in a rotating port and a sealing plate (29) which is slidably mounted on the inner wall of a hollow rod (26); an arc-shaped air vent (30) for gas circulation is provided on the surface of the hollow rod (26); the sealing plate (29) is used to seal the air vent (30); one end of the rotating shaft (28) located in the hollow rod (26) is fixedly connected to the surface of the sealing plate (29) through a connecting rod; and one end of the rotating shaft (28) located outside the hollow rod (26) is fixedly mounted with a rotating block, and the rotating block is connected to the hollow rod (26) through an elastic component.

9. A test device for detecting the insertion loss isolation of an isolator according to claim 8, characterized in that: The elastic component comprises a torsion spring (31) sleeved on the rotating shaft (28), and two ends of the torsion spring (31) are respectively fixedly connected to the surface of the rotating block and one end of the hollow rod (26).

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