Free space isolator and optical communication device

Abstract

The utility model relates to free space isolator in optical passive device technical field, specifically related to a kind of free space isolator.The free space isolator includes magnetic ring, locating washer and isolator core, and the mounting hole is formed along its axial direction in magnetic ring;The opposite ends of locating washer along its axial direction are respectively plane and inclined plane, and preset included angle is arranged between inclined plane and plane, and preset included angle is acute angle;The opposite ends of isolator core are light passing surface, and one light passing surface is arranged on inclined plane to adjust the angle of light passing surface;Locating washer and isolator are all arranged in the mounting hole of magnetic ring, and the outer ring of locating washer is matched with the inner wall of magnetic ring and is connected.The utility model does not need to help external thimble equipment, and the angle adjustment and positioning of isolator core light passing surface are directly realized by the inclined plane structure of locating washer, the angle requirement of light passing surface is guaranteed, and assembly process is simplified, the angle error of isolator core is greatly reduced while improving processing efficiency, and the requirement of angle precision of high-precision communication is satisfied.

Description

Technical Field

[0001] This utility model relates to the field of passive optical devices, and in particular to a free-space isolator and an optical communication device. Background Technology

[0002] A free space isolator is a passive optical device widely used in optical communication and laser fields. Its function is to ensure unidirectional transmission of optical signals and prevent reflected light from interfering with the system.

[0003] The most common shape of free-space isolators is the circular free-space isolator. During assembly, the isolator core is mainly glued to the inner hole of the magnetic ring. The main bonding methods are four-corner gluing, two-sided gluing, or four-sided gluing. In the actual manufacturing process of the above bonding methods, the isolator core needs to be lifted with a pin, and glue is applied to the corners of the isolator core or to the opposite sides of the isolator core. This bonding method requires the use of external pin equipment, which is complicated and has low processing efficiency. At the same time, the installation angle error of the isolator core after assembly is large, which cannot meet the high-precision communication requirements. Utility Model Content

[0004] This utility model provides a free-space isolator and an optical communicator to solve the problems of existing bonding methods that require external ejector pins, have complex processes, and low processing efficiency; at the same time, the installation angle error of the isolator core after assembly is large, which cannot meet the high-precision communication requirements.

[0005] This utility model discloses a free-space isolator, including a magnetic ring, a positioning pad, and an isolator core. The magnetic ring has a mounting hole along its axial direction; the positioning pad has a plane and an inclined plane at opposite ends along its axial direction, and a preset angle is provided between the inclined plane and the plane, the preset angle being an acute angle; the isolator core has light-transmitting surfaces at opposite ends, one of which is located on the inclined plane to adjust the angle of the light-transmitting surface; the positioning pad and the isolator are both located in the mounting hole of the magnetic ring, and the outer ring of the positioning pad is matched and connected to the inner wall of the magnetic ring.

[0006] Optionally, a first positioning line is provided on the inclined surface, and the side of the light-transmitting surface is flush with the first positioning line.

[0007] Optionally, a second positioning line is provided on the plane, and the second positioning line is exposed outside the magnetic ring.

[0008] Optionally, the first positioning line and the second positioning line are staggered on the positioning pad.

[0009] Optionally, the positioning pad has an annular structure, with the light-transmitting surface exposed along the inner ring of the positioning pad.

[0010] Optionally, the light-transmitting surface and the inclined surface are bonded together with adhesive, and the outer ring of the positioning pad is bonded together with the inner wall of the magnetic ring with adhesive.

[0011] Optionally, the two opposite sides of the light-transmitting surface are bonded to the inclined surface with adhesive.

[0012] Optionally, the positioning pad is made of glass or ceramic material.

[0013] Optionally, the preset included angle is 7°.

[0014] This utility model also discloses an optical communication device, including the free space isolator described above.

[0015] The beneficial effects of the free-space isolator and optical communicator provided in this embodiment are as follows: The free-space isolator includes a magnetic ring, a positioning pad, and an isolator core. The magnetic ring has an axial mounting hole to provide a mounting carrier for other components. The positioning pad has a plane and an inclined plane at its two axial ends, forming a preset acute angle. The inclined plane provides an installation environment for the light-transmitting surface of the isolator core and can adjust the angle of the light-transmitting surface according to the preset angle. After the positioning pad is connected to the isolator core, it is placed within the mounting hole, and the outer ring of the positioning pad matches and connects with the inner wall of the magnetic ring to securely hold the isolator core within the magnetic ring. This embodiment eliminates the need for external ejector pins, directly achieving angle adjustment and positioning of the light-transmitting surface of the isolator core through the inclined structure of the positioning pad. This ensures the required angle of the light-transmitting surface, simplifies the assembly process, improves processing efficiency, and significantly reduces the angle error of the isolator core, meeting the angle accuracy requirements of high-precision communication. Attached Figure Description

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of a free space isolator according to an embodiment of this utility model; Figure 2 This is a front view of the free space isolator according to an embodiment of this utility model; Figure 3 yes Figure 2 AA section view; Figure 4 This is one of the schematic diagrams of the positioning pad and the isolator core in an embodiment of this utility model; Figure 5 This is the second schematic diagram of the positioning pad and isolator core in an embodiment of this utility model; Figure 6 This is a schematic diagram of the magnetic ring according to an embodiment of the present invention; Figure 7 This is one of the schematic diagrams of the positioning pad in an embodiment of this utility model; Figure 8 This is the second schematic diagram of the positioning pad in an embodiment of this utility model.

[0017] The labels for the attached figures are as follows: 10. Magnetic ring; 101. Mounting hole; 20. Positioning pad; 210. Flat surface; 211. Second positioning line; 220. Bevel; 221. First positioning line; 30. Isolator core; 310. Transparent surface; 40. Adhesive. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] This utility model embodiment provides a free space isolator, such as Figures 1 to 8 As shown, the device includes a magnetic ring 10, a positioning pad 20, and an isolator core 30. The magnetic ring 10 has a mounting hole 101 formed along its axial direction. The positioning pad 20 has a plane 210 and an inclined plane 220 at opposite ends along its axial direction, respectively. A preset angle is provided between the inclined plane 220 and the plane 210, and the preset angle is an acute angle. The isolator core 30 has light-transmitting surfaces 310 at opposite ends, one of which is located on the inclined plane 220 to adjust the angle of the light-transmitting surface 310. The positioning pad 20 and the isolator are both located in the mounting hole 101 of the magnetic ring 10, and the outer ring of the positioning pad 20 is matched and connected to the inner wall of the magnetic ring 10.

[0020] The free-space isolator of this embodiment includes a magnetic ring 10, a positioning pad 20, and an isolator core 30. The magnetic ring 10 has an axial mounting hole 101 to provide a mounting carrier for other components. The positioning pad 20 has a plane 210 and an inclined plane 220 at its two axial ends, forming a preset acute angle. The inclined plane 220 provides an installation environment for the light-transmitting surface 310 of the isolator core 30 and can adjust the angle of the light-transmitting surface 310 according to the preset angle. After the positioning pad 20 is connected to the isolator core 30, it is placed within the mounting hole 101, and the outer ring of the positioning pad 20 matches and connects with the inner wall of the magnetic ring 10 to securely hold the isolator core 30 within the magnetic ring 10. This embodiment eliminates the need for external ejector pins, directly achieving angle adjustment and positioning of the light-transmitting surface 310 of the isolator core 30 through the inclined plane 220 structure of the positioning pad 20. This ensures the angle requirements of the light-transmitting surface 310, simplifies the assembly process, significantly reduces the angle error of the isolator core 30, and meets the angle accuracy requirements of high-precision communication.

[0021] As an optional solution in this embodiment, refer to Figure 5 , Figure 7 and Figure 8 A first positioning line 221 is provided on the inclined surface 220, and the side of the light-transmitting surface 310 is flush with the first positioning line 221.

[0022] The first positioning line 221 provides a visual positioning reference for the assembly of the isolator core 30 and the positioning pad 20, preventing the isolator core 30 from shifting relative to the inclined surface 220 during assembly. This further improves the accuracy of the angle of the light-transmitting surface 310, reduces errors during assembly, and increases assembly efficiency, making the assembly operation more convenient and standardized.

[0023] As an optional solution in this embodiment, refer to Figure 1 , Figure 4 , Figure 5 , Figure 7 and Figure 8 A second positioning line 211 is provided on the plane 210, and the second positioning line 211 is exposed outside the magnetic ring 10.

[0024] The second positioning line 211 facilitates the matching and positioning of the operator with the external communication equipment, thereby improving the ease of use of the free space isolator in this embodiment.

[0025] As an optional solution in this embodiment, refer to Figure 8 The first positioning line 221 and the second positioning line 211 are offset on the positioning pad 20.

[0026] Among them, the staggered design can avoid mutual interference between the two positioning lines and clearly define the positioning function boundaries of each line.

[0027] As an optional solution in this embodiment, refer to Figure 7 The positioning pad 20 has a ring structure, and the light-transmitting surface 310 is exposed along the inner ring of the positioning pad 20.

[0028] The ring structure not only ensures the matching connection strength between the positioning pad 20 and the inner wall of the magnetic ring 10, but also reserves a light signal transmission channel for the light-transmitting surface 310, avoiding the positioning pad 20 from blocking the light signal, ensuring the smooth transmission of the light signal, and taking into account both structural stability and optical performance.

[0029] As an optional solution in this embodiment, the light-transmitting surface 310 and the inclined surface 220 are bonded together with glue 40, and the outer ring of the positioning pad 20 is bonded to the inner wall of the magnetic ring 10 with glue 40.

[0030] The adhesive 40 ensures a stable connection between the light-transmitting surface 310 and the inclined surface 220, as well as between the positioning pad 20 and the magnetic ring 10, thereby further ensuring assembly accuracy.

[0031] As an optional solution in this embodiment, refer to Figure 5 The two opposite sides of the translucent surface 310 are bonded to the inclined surface 220 with glue 40.

[0032] By bonding side to side, the bonding is more uniform and the force is more balanced, while avoiding the influence of glue 40 on the light-transmitting surface 310. This ensures the stability and angular accuracy of the isolator core 30 installation, as well as the communication performance of the free space isolator.

[0033] As an optional solution in this embodiment, the positioning pad 20 is made of glass or ceramic material.

[0034] Among them, glass and ceramic materials have excellent dimensional stability, wear resistance and optical compatibility, which can ensure the long-term stability of the structural accuracy of the positioning pad 20, avoid positioning deviation caused by material deformation, and improve the environmental adaptability and service life of the isolator.

[0035] The isolator core 30 in this embodiment can be a single-stage, two-stage, or three-stage or more free-space isolator, and no specific limitation is made here.

[0036] As an optional solution in this embodiment, the preset included angle is 7°.

[0037] This angle is designed for installation requirements in common optical communication applications. It ensures optimal core optical performance of the isolator, better meeting high-precision communication needs. Of course, the preset angle of the positioning pad 20 in this embodiment can be other angles, such as 8°, 10°, etc. In use, simply select the positioning pad 20 with the appropriate preset angle according to communication requirements, ensuring the versatility of the free-space isolator in this embodiment.

[0038] This application also discloses an optical communicator, including the free-space isolator described in the foregoing embodiments. This optical communicator has the same structure and beneficial effects as the free-space isolator described in the foregoing embodiments. The structure and beneficial effects of the free-space isolator have been described in detail in the foregoing embodiments and will not be repeated here.

[0039] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A free-space isolator, characterized in that, include: A magnetic ring having a mounting hole formed along its axial direction; A positioning pad, wherein the two opposite ends of the positioning pad along its axial direction are a plane and an inclined plane, and a preset angle is provided between the inclined plane and the plane, wherein the preset angle is an acute angle; The isolator core has two opposite ends that are light-transmitting surfaces, one of which is located on the inclined surface to adjust the angle of the light-transmitting surface; the positioning pad and the isolator are both located in the mounting hole of the magnetic ring, and the outer ring of the positioning pad is matched and connected to the inner wall of the magnetic ring.

2. The free-space isolator according to claim 1, characterized in that, A first positioning line is provided on the inclined surface, and the side of the light-transmitting surface is flush with the first positioning line.

3. The free-space isolator according to claim 2, characterized in that, A second positioning line is provided on the plane, and the second positioning line is exposed outside the magnetic ring.

4. The free-space isolator according to claim 3, characterized in that, The first positioning line and the second positioning line are offset on the positioning pad.

5. The free-space isolator according to claim 4, characterized in that, The positioning pad has a ring structure, and the light-transmitting surface is exposed along the inner ring of the positioning pad.

6. The free-space isolator according to any one of claims 1 to 5, characterized in that, The light-transmitting surface and the inclined surface are bonded together with adhesive, and the outer ring of the positioning pad is bonded together with the inner wall of the magnetic ring with adhesive.

7. The free-space isolator according to claim 6, characterized in that, The two opposite sides of the light-transmitting surface are bonded to the inclined surface with glue.

8. The free-space isolator according to claim 7, characterized in that, The positioning pad is made of glass or ceramic material.

9. The free-space isolator according to claim 8, characterized in that, The preset included angle is 7°.

10. An optical communication device, characterized in that, Includes the free space isolator as described in any one of claims 1 to 9.

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