High-isolation reflective bipolar optical isolator

Abstract

The utility model relates to the technical field of passive optical devices, and discloses a high-isolation reflective bipolar optical isolator which comprises a base, a strip-shaped groove is formed in the middle of the bottom wall of the base, an adjusting groove is formed in the center of the inner top wall of the strip-shaped groove, and an isolation mechanism is arranged on the top wall of the base and located at an opening of the adjusting groove. The isolation mechanism comprises bottom plates symmetrically arranged at the opening of the adjusting groove, the top walls of the bottom plates are fixedly connected with isolation instruments, and the two isolation instruments are reflection type bipolar optical isolator bodies. According to the utility model, by adopting the structural design of the two isolation instruments connected in series, the two isolation instruments are connected in series end to end to form the integral reflective bipolar optical isolator, when reflective bipolar optical isolation work is carried out, the direction of light is limited, so that the light can only be transmitted in a single direction, but due to the adoption of the structural design of the double isolation instruments, the light can only be transmitted in a single direction. The light reflected by the optical fiber echo is subjected to two-stage isolation by the optical isolator, the isolation effect is good, and the light wave transmission efficiency can be well improved.

Description

Technical Field

[0001] The utility model relates to the technical field of passive optical devices, in particular to a high-isolation reflective dual-polarization optical isolator. Background Art

[0002] An optical isolator is a passive optical device that only allows one-way light to pass through. Its working principle is based on the non-reciprocity of Faraday rotation. Light reflected by the optical fiber echo can be well isolated by the optical isolator. The optical isolator mainly uses the Faraday effect of magneto-optical crystals. The characteristics of the optical isolator are: low forward insertion loss, high reverse isolation, and high return loss.

[0003] The existing reflective bipolar isolators still have the following problems when in use: most of them adopt a single isolation instrument structure design. When performing reflective bipolar isolation, they limit the direction of light so that light can only be transmitted in one direction. However, due to the use of a single isolation instrument structure design, the light reflected by the optical fiber echo is generally isolated by the optical isolator, making it difficult to improve the light wave transmission efficiency. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the utility model provides a high-isolation reflective dual-polarized light isolator, which solves the problems raised by the background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-isolation reflective bipolar isolator, comprising a base, a strip groove is provided in the middle position of the bottom wall of the base, an adjustment groove is provided in the center position of the top wall inside the strip groove, an isolation mechanism is provided on the top wall of the base and located at the opening of the adjustment groove, the isolation mechanism comprises a bottom plate symmetrically arranged at the opening of the adjustment groove, an isolation instrument is fixedly connected to the top wall of the bottom plate, two of the isolation instruments are reflective bipolar isolator bodies, and the two isolation instruments are arranged in a combined form, a connection interface is provided at one end of the isolation instrument, a connection joint is provided at the other end of the isolation instrument, and a connection joint at the other end of the isolation instrument is embedded in the connection interface at one end of the other end of the isolation instrument.

[0008] As a further solution of the utility model: a screw is fixedly connected to the center position of the bottom wall of the bottom plate, a nut is threadedly connected to the bottom end of the screw, two of the screws are slidably connected in the adjustment groove, and the top ends of the two nuts are slidably connected to the top wall in the strip groove.

[0009] As a further solution of the utility model: a protective frame mechanism is arranged on the top wall of the base and located outside the isolation mechanism, and the protective frame mechanism includes two U-shaped frames symmetrically fixedly connected to the top wall of the base, and two reinforcement rods are fixedly connected in a front-to-back symmetrical manner between the side walls facing each other of the two U-shaped frames, and an installation hole is opened between the upper and lower side walls in the middle of the U-shaped frame.

[0010] As a further solution of the utility model: a groove is respectively provided at the four corners of the top wall of the base, and a through hole is provided at the center of the bottom wall of the groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, by adopting the structural design of two isolation instruments in series, the two isolation instruments are connected in series head to tail to form an integral reflective dual-polarized light isolator. When performing reflective dual-polarized light isolation, the direction of light is restricted so that light can only be transmitted in one direction. However, due to the use of the dual isolation instrument structural design, the light reflected by the optical fiber echo is double-stage isolated by the optical isolator, and the isolation effect is good, which can well improve the light wave transmission efficiency.

[0013] 2. In the utility model, the two isolation instruments adopt a quick-release structure design, and the nut of the bottom bolt structure can be unscrewed, and the screw of the bolt structure can be pulled out through the adjustment groove to realize the disassembly of the entire isolation instrument, which is conducive to regular maintenance of the isolation instrument and replacement when it is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall three-dimensional Figure 1 ;

[0015] Figure 2 The overall three-dimensional Figure 2 ;

[0016] Figure 3 It is a three-dimensional diagram of the external frame structure of the utility model;

[0017] Figure 4 This is a disassembled stereoscopic diagram of two isolation instruments of the utility model.

[0018] In the figure: 1. base; 2. strip groove; 3. adjustment groove; 4. groove; 5. through hole; 6. isolation mechanism; 7. protection frame mechanism; 61. bottom plate; 62. screw; 63. nut; 64. isolation instrument; 71. U-shaped frame; 72. mounting hole; 73. reinforcement rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] It should be noted that the isolation instrument 64 is a prior art, which is a passive optical device that only allows unidirectional light to pass through, specifically a reflective bipolar isolator body, which is common knowledge among personnel in this technical field and will not be elaborated here.

[0021] See also Figures 1 to 4 In the embodiment of the utility model, a high-isolation reflective dual-polarized light isolator includes a base 1, a strip groove 2 is provided in the middle of the bottom wall of the base 1, an adjustment groove 3 is provided in the center of the top wall of the strip groove 2, an isolation mechanism 6 is provided on the top wall of the base 1 and located at the opening of the adjustment groove 3, the isolation mechanism 6 includes a bottom plate 61 symmetrically arranged at the opening of the adjustment groove 3, an isolation instrument 64 is fixedly connected to the top wall of the bottom plate 61, the two isolation instruments 64 are both reflective dual-polarized light isolator bodies, and the two isolation instruments 64 are arranged in a combined shape, one end of the isolation instrument 64 is provided with a connection interface, and the isolation instrument 6 4 A connecting joint is arranged at the other end, and a connecting joint at the other end of the isolating instrument 64 is embedded in a connecting interface at one end of the isolating instrument 64 at the other end. The overall structure design adopts two isolating instruments 64 connected in series, and the two isolating instruments 64 are connected in series end to end to form an overall reflective dual-polarized light isolator. When performing reflective dual-polarized light isolation, the direction of light is restricted so that light can only be transmitted in one direction. However, due to the use of the dual isolating instrument 64 structure design, the light reflected by the optical fiber echo is double-stage isolated by the optical isolator, and the isolation effect is good, which can greatly improve the light wave transmission efficiency.

[0022] A screw rod 62 is fixedly connected to the center position of the bottom wall of the bottom plate 61, and a nut 63 is threadedly connected to the bottom end of the screw rod 62. The two screw rods 62 are slidably connected in the adjusting groove 3, and the top ends of the two nuts 63 are slidably connected to the inner top wall of the strip groove 2. The two isolation instruments 64 adopt a quick-release structure design, and the nuts 63 of the bottom bolt structure can be unscrewed, and the screw rod 62 of the bolt structure can be pulled out through the adjusting groove 3 to realize the disassembly of the entire isolation instrument 64, which is beneficial to regular maintenance of the isolation instrument 64 and also beneficial to replacement when it is damaged.

[0023] A protective frame mechanism 7 is arranged on the top wall of the base 1 and outside the isolation mechanism 6. The protective frame mechanism 7 includes two U-shaped frames 71 symmetrically fixedly connected to the top wall of the base 1. Two reinforcing rods 73 are fixedly connected front-to-back symmetrically between the side walls facing each other of the two U-shaped frames 71. A mounting hole 72 is opened between the upper and lower side walls in the middle of the U-shaped frame 71. The overall isolator can be suspended and installed on the corresponding workstation through the mounting holes 72 on the two U-shaped frames 71 in conjunction with mounting bolts.

[0024] A groove 4 is provided at each of the four corners of the top wall of the base 1 , and a through hole 5 is provided at the center of the bottom wall of the groove 4 , and the base 1 can be fixedly installed at the corresponding work station by using the four through holes 5 in conjunction with bolts.

[0025] The working principle of the utility model is: the four through holes 5 of the base 1 can be used to cooperate with bolts for fixed installation at the corresponding workstation, and the mounting holes 72 on the two U-shaped frames 71 can also cooperate with mounting bolts to suspend the entire isolator at the corresponding workstation. The two isolation instruments 64 adopt a quick-release structure design, and the nut 63 of the bolt structure at the bottom can be screwed off, and the screw 62 of the bolt structure can be pulled out through the adjustment groove 3 to realize the disassembly of the entire isolation instrument 64, which is beneficial to regular maintenance of the isolation instrument 64 and replacement when it is damaged. The overall structure design of two isolation instruments 64 connected in series is adopted, and the two isolation instruments 64 are connected in series end to end to form an integral reflective dual-polarized light isolator. When performing reflective dual-polarized light isolation work, the direction of the light is restricted so that the light can only be transmitted in one direction. However, due to the use of the dual isolation instrument 64 structure design, the light reflected by the optical fiber echo is double-stage isolated by the optical isolator, and the isolation effect is good, which can well improve the light wave transmission efficiency.

[0026] 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-isolation reflective dual-polarized light isolator, comprising a base (1); Features: A strip groove (2) is provided in the middle of the bottom wall of the base (1), an adjustment groove (3) is provided in the center of the top wall inside the strip groove (2), and an isolation mechanism (6) is provided on the top wall of the base (1) at the opening of the adjustment groove (3); The isolation mechanism (6) comprises a bottom plate (61) symmetrically arranged at the opening of the adjustment slot (3), and an isolation instrument (64) is fixedly connected to the top wall of the bottom plate (61); The two isolation instruments (64) are both reflective dual-polarized light isolator bodies, and the two isolation instruments (64) are arranged in a combined form; A screw rod (62) is fixedly connected at the center of the bottom wall of the bottom plate (61), and a nut (63) is threadedly connected at the bottom end of the screw rod (62).

2. A high isolation reflective dual aurora isolator according to claim 1, characterized in that: A connection interface is provided at one end of the isolation instrument (64), and a connection connector is provided at the other end of the isolation instrument (64).

3. The high isolation reflective dual-polarized isolator according to claim 1, characterized in that: A connection connector at the other end of the isolation instrument (64) is embedded in the connection interface at one end of the isolation instrument (64) at the other end.

4. The high isolation reflective dual-polarized isolator according to claim 1, characterized in that: A protective frame mechanism (7) is provided on the top wall of the base (1) and located outside the isolation mechanism (6); the protective frame mechanism (7) comprises two U-shaped frames (71) symmetrically fixedly connected to the top wall of the base (1).

5. The high isolation reflective dual aurora isolator according to claim 4, characterized in that: Two reinforcing rods (73) are fixedly connected between the side walls of the two U-shaped frames (71) facing each other in a front-to-back symmetrical manner, and a mounting hole (72) is provided between the upper and lower side walls in the middle of the U-shaped frame (71).

6. The high isolation reflective dual-polarized isolator according to claim 1, characterized in that: A groove (4) is provided at each of the four corners of the top wall of the base (1), and a through hole (5) is provided at the center of the bottom wall of the groove (4).

7. The high isolation reflective dual-polarized isolator according to claim 1, characterized in that: The two screw rods (62) are slidably connected in the adjustment groove (3), and the top ends of the two nuts (63) are slidably connected to the inner top wall of the strip groove (2).

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