Dual-channel polarization-independent magneto-optical isolator

Abstract

The invention discloses a dual-channel polarization-independent magneto-optical isolator, and belongs to the technical field of magneto-optical isolators. The magneto-optical isolator comprises magneto-optical isolator bodies, wherein the two magneto-optical isolator bodies which are arranged in parallel are connected through a connecting mechanism to form a dual-channel isolator body; the auxiliary adjusting structure is installed on the end face of one side, away from the other magneto-optical isolator body, of one magneto-optical isolator body. The connecting mechanism is a connecting cavity or an auxiliary splicing structure, and a light absorption plate is fixedly arranged in the connecting cavity. Under the action of the dual-channel magneto-optical isolator body, two light sources can be subjected to cooperative experiments at the same time, so that the experiment time can be greatly shortened, various steps caused by repeated experiments are avoided, the experiment efficiency is improved, and meanwhile, under the action of the auxiliary adjusting structure, the light sources can be conveniently adjusted according to different positions of the light sources. And angle adjustment is carried out on the dual-channel magneto-optical isolator formed by the two magneto-optical isolator bodies.

Description

Technical Field

[0001] This application relates to a dual-channel polarization-independent magneto-optical isolator, belonging to the field of magneto-optical isolator technology. Background Technology

[0002] Magneto-optical isolators are devices based on the magneto-optical effect of crystals. In laser systems, they enable unidirectional laser transmission, playing a crucial role in protecting the laser front-end system and stabilizing laser output. They are a key component in the development and application of high-power lasers. Magneto-optical isolators can be further divided into polarization-dependent and polarization-independent types based on their polarization characteristics. Polarization-independent isolators require internal crystals or optical elements to split the light, which is then combined using a Faraday rotator and another crystal or optical element, thus isolating randomly polarized input light. This type of isolator is widely used in optical systems where polarization is not restricted. The characteristics of magneto-optical isolators include low forward insertion loss, high reverse isolation, and high return loss. Considering that the polarization state of light waves in fiber optic communication is randomly changing, polarization-independent magneto-optical isolators are required. These utilize the Faraday effect of magneto-optical crystals to restrict the direction of light, allowing it to transmit in only one direction. Light reflected back from the fiber can be effectively isolated by the isolator, improving the transmission efficiency of the optical wave.

[0003] Generally, traditional magneto-optical isolators are single-channel magneto-optical isolators. When experiments are required with dual power supplies, separate experiments must be conducted, which increases the number of experimental steps, experimental time, and reduces experimental efficiency. In addition, during the experiment, in the case of dual power supplies, the angle and position of the power supplies need to be changed according to the actual situation to avoid mutual interference between the power supplies. However, the position of the magneto-optical isolator is often fixed and cannot adapt to the experimental requirements after the position of the power supply changes in the case of dual power supplies. Summary of the Invention

[0004] To address the problem that existing magneto-optical isolators, being single-channel and inflexible in position, cannot meet the requirements for high efficiency and accuracy in experiments with dual power supplies, this application proposes a dual-channel polarization-independent magneto-optical isolator solution.

[0005] The technical solution adopted in this application is as follows:

[0006] According to a first aspect of this application, a dual-channel polarization-independent magneto-optical isolator is provided, comprising:

[0007] Magneto-optical isolator 1, two parallel magneto-optical isolators 1 are connected by a connecting mechanism to form a dual-channel isolator;

[0008] Auxiliary adjustment structure 3 is installed on the end face of one of the magneto-optical isolators 1 on the side opposite to the other magneto-optical isolator 1;

[0009] The connecting mechanism is a connecting cavity 2 or an auxiliary splicing structure 4, wherein a light-absorbing plate 6 is fixedly installed in the connecting cavity 2.

[0010] Optionally, the auxiliary splicing structure 4 includes rectangular locking blocks 401 and rectangular locking frames 403 respectively disposed on opposite sides of the two magneto-optical isolators 1. The rectangular locking blocks 401 have a plurality of first locking holes 402 opened along a direction parallel to the magneto-optical isolator 1, and the rectangular locking frames 403 have a plurality of second locking holes 404 opened along a direction parallel to the magneto-optical isolator 1. The first locking holes 402 and the second locking holes 404 are connected by threaded rods 405 and fixing nuts 407.

[0011] Optionally, the first locking hole 402 and the second locking hole 404 are aligned one to one or staggered. A plurality of corresponding threaded rods 405 are inserted into the locking holes in which the first locking hole 402 and the second locking hole 404 are aligned. The end of the threaded rod 405 is threadedly connected to a fixing nut 407.

[0012] The first locking holes 402 and the second locking holes 404 are arranged at equal intervals.

[0013] Optionally, a plurality of corresponding threaded inserts 405 are fixedly disposed on one end face of the connecting rectangular plate 406, away from the fixing nut 407.

[0014] Optionally, the auxiliary adjustment structure 3 includes a base 301, a rectangular frame 302 is fixedly provided on the top of the base 301, a threaded rod 303 is rotatably connected between the inner walls of the two sides of the rectangular frame 302 along the length direction, one end of the threaded rod 303 passes through the side wall of the rectangular frame 302 and is fixedly connected to an operating round block 304, and a screw hole block 305 is threadedly connected to the threaded rod 303 along the length direction in the rectangular frame 302;

[0015] A U-shaped frame 306 is provided on the side of the screw hole block 305 away from the base 301. A rotating rod 307 is rotatably connected between the two sides of the inner wall of the U-shaped frame 306. One end of the rotating rod 307 passes through one side wall of the U-shaped frame 306 and is fixedly connected to an operating disc 309.

[0016] The screw hole block 305 is fixedly connected to the U-shaped frame 306 through a protruding structure.

[0017] Optionally, the operating disc 309 is provided with a threaded extrusion rod 310, which passes through and is threadedly connected to the operating disc 309. A rubber block 311 is fixedly provided at one end of the threaded extrusion rod 310 facing the U-shaped frame 306, and a rubber ring block 312 that cooperates with the rubber block 311 is fixedly provided on the outer surface of the side wall of the U-shaped frame 306 facing the threaded extrusion rod 310.

[0018] Optionally, a rotating block 308 is fixedly provided on the rotating rod 307, and the rotating block 308 is used to be fixedly connected to the end face of one side of the magneto-optical isolator body 1.

[0019] Optionally, the magneto-optical isolator body 1 includes a housing 101, and through holes are provided at both ends of the housing along the length direction;

[0020] The shell contains, along its length, a first birefringent crystal 102, a Faraday rotator 103, a quarter-wave plate 104, and a second birefringent crystal 105 arranged sequentially.

[0021] The first birefringent crystal 102, the Faraday rotator 103, the quarter-wave plate 104, and the second birefringent crystal 105 are all fixedly connected to the inner wall of the housing 101.

[0022] Optionally, inside the housing 101, a light absorber 106 is circumferentially arranged along the length direction inside the housing 101, located on the first birefringent crystal 102 and one side near one end of the housing 101. The light absorber 106 is fixed on the inner wall of the housing 101 and is used to absorb the light source that is received in the opposite direction.

[0023] Optionally, it also includes a light source 5, which is disposed on one side of the magneto-optical isolator body 1 for conducting light-blocking experiments.

[0024] The beneficial effects of this application include:

[0025] The dual-channel polarization-independent magneto-optical isolator provided in this application, composed of two magneto-optical isolators, allows for simultaneous experiments with two light sources. This significantly shortens experimental time, eliminates numerous steps caused by repetitive experiments, and improves experimental efficiency. Furthermore, with the aid of an adjustment structure, the angle of the dual-channel magneto-optical isolator can be adjusted according to the position of the light source, facilitating experimentation. Additionally, with the aid of a splicing structure, the positions of the two magneto-optical isolators can be altered, increasing the selectivity of experimental conditions. This allows the two misaligned magneto-optical isolators to provide more experimental data, increasing the accuracy of the data. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the dual-channel polarization-independent magneto-optical isolator of this application;

[0027] Figure 2 This is a schematic diagram of the rectangular card block structure of the dual-channel polarization-independent magneto-optical isolator of this application;

[0028] Figure 3 This is a schematic diagram of the rectangular frame structure of the dual-channel polarization-independent magneto-optical isolator of this application;

[0029] Figure 4 This is a schematic diagram of the structure of the rectangular frame of the dual-channel polarization-independent magneto-optical isolator in this application;

[0030] Figure 5 This is a schematic diagram of the structure of the U-shaped frame of the dual-channel polarization-independent magneto-optical isolator in this application;

[0031] Figure 6 This is a schematic diagram of the structure at the connection cavity of the dual-channel polarization-independent magneto-optical isolator of this application;

[0032] Figure 7 This is a schematic diagram of the forward light entering the magneto-optical isolator body under the auxiliary splicing structure of the dual-channel polarization-independent magneto-optical isolator of this application;

[0033] Figure 8 This is a schematic diagram of the reverse light entering the magneto-optical isolator body under the auxiliary splicing structure of the dual-channel polarization-independent magneto-optical isolator of this application;

[0034] Figure 9 This is a schematic diagram of the forward light entering the magneto-optical isolator body under the dual-channel polarization-independent magneto-optical isolator connection cavity structure of this application;

[0035] Figure 10 This is a schematic diagram of the reverse light entering the magneto-optical isolator body under the dual-channel polarization-independent magneto-optical isolator connection cavity structure of this application.

[0036] Attached Figure Labels

[0037] 1. Magneto-optical isolator body; 101. Housing; 102. First birefringent crystal; 103. Faraday rotator; 104. Quarter-wave plate; 105. Second birefringent crystal; 106. Light absorber;

[0038] 2. Connecting cavity;

[0039] 3. Auxiliary adjustment structure; 301. Base; 302. Rectangular frame; 303. Threaded rod; 304. Operating block; 305. Screw hole block; 306. U-shaped frame; 307. Rotating rod; 308. Rotating block; 309. Operating disc; 310. Threaded extrusion rod; 311. Rubber block; 312. Rubber ring block;

[0040] 4. Auxiliary splicing structure; 401. Rectangular locking block; 402. First locking hole; 403. Rectangular locking frame; 404. Second locking hole; 405. Threaded insertion rod; 406. Connecting rectangular plate; 407. Fixing nut;

[0041] 5. Light source; 6. Light-absorbing plate. Detailed Implementation

[0042] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0043] Unless otherwise specified, all raw materials used in the embodiments of this application were purchased through commercial channels.

[0044] Example 1

[0045] Dual-channel polarization-independent magneto-optical isolators include:

[0046] Magneto-optical isolator 1, there are two magneto-optical isolators 1, and the two magneto-optical isolators 1 can be assembled into a dual-channel device;

[0047] Auxiliary adjustment structure 3 is installed below the magneto-optical isolator body 1 and is fixedly connected to the bottom of one of the magneto-optical isolator bodies 1;

[0048] Auxiliary splicing structure 4 is installed between two magneto-optical isolators 1;

[0049] Light source 5 is located on one side of the magneto-optical isolator body 1 and is used for light-blocking experiments;

[0050] Under the action of the dual-channel magneto-optical isolator 1 composed of two magneto-optical isolator bodies 1, two light sources 5 can be used simultaneously for experiments, which can significantly shorten the experimental time, eliminate the numerous steps caused by repeated experiments, and improve experimental efficiency. At the same time, under the action of the auxiliary adjustment structure 3, the angle of the dual-channel magneto-optical isolator composed of two magneto-optical isolator bodies 1 can be adjusted, which can be conveniently adjusted according to the different positions of the light sources 5, and then the experiment can be carried out. At the same time, under the action of the auxiliary splicing structure 4, the positions of the two magneto-optical isolator bodies 1 can be spliced ​​and changed, thereby increasing the selectivity of experimental conditions, so that the two misaligned magneto-optical isolator bodies 1 can provide more experimental data and increase the accuracy of experimental data.

[0051] refer to Figure 4 The auxiliary adjustment structure 3 also includes a base 301. A rectangular frame 302 is fixedly connected to the top of the outer surface of the base 301. A threaded rod 303 is rotatably connected between the two sides of the inner wall of the rectangular frame 302. One end of the threaded rod 303 passes through the rectangular frame 302 and is fixedly connected to an operating round block 304. A screw hole block 305 is threadedly connected to the outer surface of the threaded rod 303.

[0052] By setting the threaded rod 303 and the threaded hole block 305, the U-shaped frame 306 can be moved, thereby adjusting its position.

[0053] refer to Figure 4 and Figure 5 A U-shaped frame 306 is fixedly connected to the top of the outer surface of the screw hole block 305. A rotating round rod 307 is rotatably connected between the two sides of the inner wall of the U-shaped frame 306. One end of the rotating round rod 307 passes through one side of the inner wall of the U-shaped frame 306 and is fixedly connected to an operating disc 309.

[0054] The angle of the U-shaped frame 306 can be adjusted by setting the rotating rod 307.

[0055] refer to Figure 5 The inner wall of the operating disc 309 is threadedly connected to a threaded extrusion rod 310, and one end of the threaded extrusion rod 310 is fixedly connected to a rubber block 311. A rubber ring block 312 is fixedly connected to one side of the outer surface of the U-shaped frame 306.

[0056] By setting the threaded compression rod 310, the rubber block 311 can be driven to move, and then it can be fixed in conjunction with the rubber ring block 312.

[0057] refer to Figure 5 A rotating circular block 308 is fixedly connected to the outer surface of the rotating circular rod 307, and the outer surface of the rotating circular block 308 is fixedly connected to the bottom of one of the magneto-optical isolators 1.

[0058] By setting the rotating block 308, the angle can be adjusted in conjunction with the rotating rod 307.

[0059] With the above scheme, in the specific use process, rotating the threaded rod 303 causes the threaded rod 303 to drive the threaded hole block 305 to move, which in turn drives the U-shaped frame 306 to move. At this time, rotating the magneto-optical isolator body 1 causes the rotating round rod 307 to drive the rotating round block 308 to rotate, which in turn drives the operating disc 309 to rotate. After the position is adjusted, rotating the threaded extrusion rod 310 causes the threaded extrusion rod 310 to drive the rubber round block 311 and the rubber ring block 312 to be extruded and fixed.

[0060] refer to Figure 7 and Figure 8The magneto-optical isolator body 1 also includes a housing 101. A first birefringent crystal 102 is disposed on the inner wall of the housing 101. A Faraday rotator 103 is installed on one side of the first birefringent crystal 102 on the inner wall of the housing 101. A quarter-wave plate 104 is installed on one side of the Faraday rotator 103 inside the housing 101. A second birefringent crystal 105 is installed on one side of the quarter-wave plate 104 inside the housing 101.

[0061] By setting the first birefringent crystal 102 and the second birefringent crystal 105, the refraction of the light source 5 can be carried out in conjunction with the Faraday rotator 103 and the quarter-wave plate 104.

[0062] Inside the housing 101, at the light inlet of the first birefringent crystal 102 and the housing 101, two light absorbers 106 are installed, and the two light absorbers 106 are symmetrically arranged inside the housing 101 in an up-down position.

[0063] By setting up the light absorber 106, light rays incident from the opposite direction can be absorbed.

[0064] With the above structure, when an experiment needs to be conducted, such as Figure 7 As shown, the light source 5 can direct light into the interior of the housing 101, where it is refracted by the first birefringent crystal 102. This allows the light source 5 to enter through the Faraday rotator 103, while the light source 5 exits through the quarter-wave plate 104 and the second birefringent crystal 105. Figure 8 As shown, when the light source 5 is incident in the opposite direction, it will be in the opposite direction of the second birefringent crystal 105 in conjunction with the quarter-wave plate 104 and the Faraday rotator 103, so that the light is emitted from the two absorbers 106 and then absorbed.

[0065] refer to Figure 1 and Figure 3 The auxiliary splicing structure 4 also includes a rectangular card block 401 and a rectangular card frame 403 that are fixedly connected to the top and bottom of the two magneto-optical isolators 1 respectively. The inner wall of the rectangular card block 401 is provided with a number of first carding holes 402 arranged at equal intervals, and the inner wall of the rectangular card frame 403 is provided with a number of second carding holes 404.

[0066] By setting up rectangular card block 401 and rectangular card frame 403, the two magneto-optical isolators 1 can be disassembled and assembled.

[0067] refer to Figure 1 and Figure 3 The first locking hole 402 and the second locking hole 404 can be staggered and aligned, and the inner walls of the first locking hole 402 and the second locking hole 404 that are aligned with each other are provided with threaded rods 405.

[0068] By setting the first locking hole 402 and the second locking hole 404, the threaded insert 405 can be used for fixing.

[0069] refer to Figure 1 and Figure 3 A connecting rectangular plate 406 is fixedly connected to one side of the outer surface of the threaded rod 405, and a fixing nut 407 is threadedly connected to one end of the threaded rod 405.

[0070] By setting a fixing nut 407, it can be used in conjunction with a threaded insert 405 for auxiliary fixing.

[0071] With the above structure, when it is necessary to splice the magneto-optical isolator body 1 at an angle, the rectangular card block 401 is inserted into the inner wall of the rectangular card frame 403, so that the first card hole 402 and the second card hole 404 are aligned. Then, the threaded rod 405 is inserted into the inner wall of the first card hole 402 and the second card hole 404, and then the fixing nut 407 and the threaded rod 405 are fixed.

[0072] The working principle of the above embodiments is as follows:

[0073] When it is necessary to splice the angle of the magneto-optical isolator body 1, the rectangular card block 401 is inserted into the inner wall of the rectangular card frame 403 so that the first card hole 402 and the second card hole 404 are aligned. Then, the threaded rod 405 is inserted into the inner wall of the first card hole 402 and the second card hole 404, and then the fixing nut 407 and the threaded rod 405 are fixed.

[0074] At this time, rotating the threaded rod 303 causes the threaded rod 303 to drive the threaded hole block 305 to move, which in turn drives the U-shaped frame 306 to move. At this time, rotating the magneto-optical isolator body 1 causes the rotating round rod 307 to drive the rotating round block 308 to rotate, which in turn drives the operating disc 309 to rotate. After the position adjustment is completed, rotating the threaded extrusion rod 310 causes the threaded extrusion rod 310 to drive the rubber round block 311 and the rubber ring block 312 to be extruded and fixed.

[0075] When an experiment is required, the light source 5 can be directed into the interior of the housing 101, where the light is refracted by the first birefringent crystal 102, and then the light source 5 can be directed into the housing 101 by the Faraday rotator 103. At the same time, the light source 5 is directed out by the quarter-wave plate 104 and the second birefringent crystal 105.

[0076] When the light source 5 is incident in the opposite direction, it will be in the opposite direction of the second birefringent crystal 105, which will work in conjunction with the quarter-wave plate 104 and the Faraday rotator 103 to make the light emitted from the two absorbers 106 and then absorbed.

[0077] Example 2

[0078] A dual-channel polarization-independent magneto-optical isolator, comprising:

[0079] Magneto-optical isolator 1, there are two magneto-optical isolators 1, and the two magneto-optical isolators 1 can be assembled into a dual-channel device;

[0080] Auxiliary adjustment structure 3 is installed below the magneto-optical isolator body 1 and is fixedly connected to the bottom of one of the magneto-optical isolator bodies 1;

[0081] Light source 5 is located on one side of the magneto-optical isolator body 1 and is used for light-blocking experiments;

[0082] Under the action of the dual-channel magneto-optical isolator 1 composed of two magneto-optical isolator bodies 1, two light sources 5 can be used simultaneously for experiments, which can greatly shorten the experimental time, eliminate the many steps caused by repeated experiments, and improve experimental efficiency. At the same time, under the action of the auxiliary adjustment structure 3, the angle of the dual-channel magneto-optical isolator composed of two magneto-optical isolator bodies 1 can be adjusted, which can be conveniently adjusted according to the different positions of the light sources 5, and then the experiment can be carried out.

[0083] refer to Figure 4 The auxiliary adjustment structure 3 also includes a base 301. A rectangular frame 302 is fixedly connected to the top of the outer surface of the base 301. A threaded rod 303 is rotatably connected between the two sides of the inner wall of the rectangular frame 302. One end of the threaded rod 303 passes through the rectangular frame 302 and is fixedly connected to an operating round block 304. A screw hole block 305 is threadedly connected to the outer surface of the threaded rod 303.

[0084] By setting the threaded rod 303 and the threaded hole block 305, the U-shaped frame 306 can be moved, thereby adjusting its position.

[0085] refer to Figure 4 and Figure 5 A U-shaped frame 306 is fixedly connected to the top of the outer surface of the screw hole block 305. A rotating round rod 307 is rotatably connected between the two sides of the inner wall of the U-shaped frame 306. One end of the rotating round rod 307 passes through one side of the inner wall of the U-shaped frame 306 and is fixedly connected to an operating disc 309.

[0086] The angle of the U-shaped frame 306 can be adjusted by setting the rotating rod 307.

[0087] refer to Figure 5 The inner wall of the operating disc 309 is threadedly connected to a threaded extrusion rod 310, and one end of the threaded extrusion rod 310 is fixedly connected to a rubber block 311. A rubber ring block 312 is fixedly connected to one side of the outer surface of the U-shaped frame 306.

[0088] By setting the threaded compression rod 310, the rubber block 311 can be driven to move, and then it can be fixed in conjunction with the rubber ring block 312.

[0089] refer to Figure 5 A rotating circular block 308 is fixedly connected to the outer surface of the rotating circular rod 307, and the outer surface of the rotating circular block 308 is fixedly connected to the bottom of one of the magneto-optical isolators 1.

[0090] By setting the rotating block 308, the angle can be adjusted in conjunction with the rotating rod 307.

[0091] With the above scheme, in the specific use process, rotating the threaded rod 303 causes the threaded rod 303 to drive the threaded hole block 305 to move, which in turn drives the U-shaped frame 306 to move. At this time, rotating the magneto-optical isolator body 1 causes the rotating round rod 307 to drive the rotating round block 308 to rotate, which in turn drives the operating disc 309 to rotate. After the position is adjusted, rotating the threaded extrusion rod 310 causes the threaded extrusion rod 310 to drive the rubber round block 311 and the rubber ring block 312 to be extruded and fixed.

[0092] refer to Figure 9 and Figure 10 The magneto-optical isolator body 1 also includes a housing 101. A first birefringent crystal 102 is disposed on the inner wall of the housing 101. A Faraday rotator 103 is installed on one side of the first birefringent crystal 102 on the inner wall of the housing 101. A quarter-wave plate 104 is installed on one side of the Faraday rotator 103 inside the housing 101. A second birefringent crystal 105 is installed on one side of the quarter-wave plate 104 inside the housing 101.

[0093] By setting the first birefringent crystal 102 and the second birefringent crystal 105, the refraction of the light source 5 can be carried out in conjunction with the Faraday rotator 103 and the quarter-wave plate 104.

[0094] refer to Figure 8 and Figure 9 Inside the housing 101, at the light inlet of the first birefringent crystal 102 and the housing 101, two light absorbers 106 are installed. The two light absorbers 106 are symmetrically arranged inside the housing 101 in an up-down position.

[0095] By setting up the light absorber 106, light rays incident from the opposite direction can be absorbed.

[0096] With the above structure, when an experiment is required, the light source 5 can be directed into the interior of the housing 101, where it can be refracted by the first birefringent crystal 102. The light source 5 can then enter through the Faraday rotator 103, while the light source 5 is emitted through the quarter-wave plate 104 and the second birefringent crystal 105. When the light source 5 is directed in the opposite direction, it will be absorbed by the second birefringent crystal 105 in the opposite direction, working in conjunction with the quarter-wave plate 104 and the Faraday rotator 103.

[0097] refer to Figure 6 and Figure 9 , Figure 10 A connecting cavity 2 is fixedly provided between the two magneto-optical isolators 1, and a light-absorbing plate 6 is fixedly connected inside the connecting cavity 2;

[0098] By setting up the connecting cavity 2 and the light-absorbing plate 6, the interiors of the two magneto-optical isolators 1 can be separated to prevent the light sources 5 from interfering with each other.

[0099] The working principle of the above embodiments is as follows:

[0100] Rotating the threaded rod 303 causes the threaded rod 303 to drive the threaded hole block 305 to move, which in turn drives the U-shaped frame 306 to move. At this time, rotating the magneto-optical isolator body 1 causes the rotating round rod 307 to drive the rotating round block 308 to rotate, which in turn drives the operating disc 309 to rotate. After the position is adjusted, rotating the threaded extrusion rod 310 causes the threaded extrusion rod 310 to drive the rubber round block 311 and the rubber ring block 312 to be extruded and fixed.

[0101] When an experiment is required, the light source 5 can be directed into the interior of the housing 101, where the light is refracted by the first birefringent crystal 102, and then the light source 5 can be directed into the housing 101 by the Faraday rotator 103. At the same time, the light source 5 is directed out by the quarter-wave plate 104 and the second birefringent crystal 105.

[0102] When the light source 5 is incident in the opposite direction, it will be in the opposite direction of the second birefringent crystal 105, the quarter-wave plate 104 and the Faraday rotator 103, so that the light is emitted from the two absorbers 106 and then absorbed.

[0103] The two magneto-optical isolators 1 can absorb light through the light-absorbing plate 6.

[0104] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A dual-channel polarization-independent magneto-optical isolator, characterized in that, include: A magneto-optical isolator body (1) is formed by connecting two parallel magneto-optical isolators (1) through a connecting mechanism to form a dual-channel body; An auxiliary adjustment structure (3) is installed on the end face of one of the magneto-optical isolators (1) on the side opposite to the other magneto-optical isolator (1); The connecting mechanism is a connecting cavity (2) or an auxiliary splicing structure (4), wherein a light-absorbing plate (6) is fixedly installed in the connecting cavity (2).

2. The dual-channel polarization-independent magneto-optical isolator according to claim 1, characterized in that, The auxiliary splicing structure (4) includes a rectangular card block (401) and a rectangular card frame (403) respectively disposed on opposite sides of the two magneto-optical isolators (1). The rectangular card block (401) has a plurality of first carding holes (402) opened in a direction parallel to the magneto-optical isolator (1). The rectangular card frame (403) has a plurality of second carding holes (404) opened in a direction parallel to the magneto-optical isolator (1). The first carding holes (402) and the second carding holes (404) are connected by a threaded rod (405) and a fixing nut (407).

3. The dual-channel polarization-independent magneto-optical isolator according to claim 2, characterized in that, The first locking hole (402) and the second locking hole (404) are aligned one to one or staggered. Several corresponding threaded rods (405) are inserted into the locking holes where the first locking hole (402) and the second locking hole (404) are aligned. The end of the threaded rod (405) is threadedly connected to a fixing nut (407).

4. The dual-channel polarization-independent magneto-optical isolator according to claim 2, characterized in that, Several corresponding threaded inserts (405) are fixedly disposed on one side end face of the connecting rectangular plate (406) at one end away from the fixing nut (407).

5. The dual-channel polarization-independent magneto-optical isolator according to claim 1, characterized in that, The auxiliary adjustment structure (3) includes a base (301), a rectangular frame (302) is fixedly provided on the top of the base (301), a threaded rod (303) is rotatably connected between the inner walls of the two sides of the rectangular frame (302) along the length direction, one end of the threaded rod (303) passes through the side wall of the rectangular frame (302) and is fixedly connected to an operating round block (304), and a screw hole block (305) is threadedly connected to the threaded rod (303) along the length direction in the rectangular frame (302); A U-shaped frame (306) is provided on the side of the screw hole block (305) away from the base (301). A rotating rod (307) is rotatably connected between the two sides of the inner wall of the U-shaped frame (306). One end of the rotating rod (307) passes through one side wall of the U-shaped frame (306) and is fixedly connected to an operating disc (309).

6. The dual-channel polarization-independent magneto-optical isolator according to claim 5, characterized in that, The operating disc (309) is provided with a threaded extrusion rod (310), which passes through and is threadedly connected to the operating disc (309). A rubber block (311) is fixedly provided at one end of the threaded extrusion rod (310) facing the U-shaped frame (306). A rubber ring block (312) that cooperates with the rubber block (311) is fixedly provided on the outer surface of the side wall of the U-shaped frame (306) facing the threaded extrusion rod (310).

7. The dual-channel polarization-independent magneto-optical isolator according to claim 6, characterized in that, A rotating block (308) is fixedly installed on the rotating rod (307), and the rotating block (308) is used to be fixedly connected to the end face of one side of the magneto-optical isolator body (1).

8. The dual-channel polarization-independent magneto-optical isolator according to claim 1, characterized in that, The magneto-optical isolator body (1) includes a housing (101), and both ends of the housing are provided with through holes along the length direction; The shell contains, along its length, a first birefringent crystal (102), a Faraday rotator (103), a quarter-wave plate (104), and a second birefringent crystal (105). The first birefringent crystal (102), the Faraday rotator (103), the quarter-wave plate (104), and the second birefringent crystal (105) are all fixedly connected to the inner wall of the housing (101).

9. The dual-channel polarization-independent magneto-optical isolator according to claim 8, characterized in that, Inside the housing (101), a light absorber (106) is arranged circumferentially along the length direction inside the housing (101) on the first birefringent crystal (102) and one side near the end of the housing (101). The light absorber (106) is fixed on the inner wall of the housing (101) and is used to absorb the light source that is received in the opposite direction.

10. The dual-channel polarization-independent magneto-optical isolator according to claim 1, characterized in that, It also includes a light source (5), which is located on one side of the magneto-optical isolator body (1) and is used for light-blocking experiments.

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