A grinding and centering device for optical fibers in tapered lenses

Abstract

This utility model discloses a grinding and centering device for conical lens optical fibers, belonging to the field of optical fiber processing technology. The grinding and centering device includes a rotating component, an adjusting component, and a grinding component. The rotating component includes a rotary motor and an optical fiber clamping member, which clamps the optical fiber to be ground extending along a first direction. The adjusting component includes a first adjusting member and a second adjusting member. The first adjusting member drives the second adjusting member to move along a second direction, and the second adjusting member drives the optical fiber clamping member to move along a third direction. The grinding component includes a grinding motor and a grinding disc. The output shaft of the grinding motor is connected to the grinding disc, which grinds the optical fiber. This utility model allows adjustment of the axial position of the optical fiber to be ground before processing via the adjusting component, ensuring that the axial direction of the optical fiber is coaxial with the rotation center corresponding to the output shaft of the rotary motor, thereby meeting the requirements of subsequent high-precision processing.

Description

Technical Field

[0001] This utility model belongs to the field of optical fiber processing technology, specifically relating to a grinding and centering device for conical lens optical fibers. Background Technology

[0002] Tapered lens fiber is made by first grinding the end face of the fiber into a tapered shape, and then using cold or heat treatment to process the tip of the tapered fiber into a spherical lens, thereby playing a role in beam shaping. It can be matched with the beam mode field emitted by the semiconductor laser to achieve a higher coupling efficiency.

[0003] Existing fiber rotation fixtures for tapered lens fibers cannot guarantee that the fiber is coaxial with the rotation center. During the fiber grinding process, the fiber becomes eccentric with the rotation center, resulting in low precision in the fabrication of tapered fibers, which cannot meet the requirements of high-precision processing. Utility Model Content

[0004] In view of the above-mentioned defects or improvement needs of the existing technology, this utility model provides a grinding and centering device for a conical lens optical fiber. Its purpose is to adjust the axial position of the optical fiber to be ground before processing by adjusting the component, so that the axial direction of the optical fiber to be ground is coaxial with the rotation center corresponding to the output shaft of the rotary motor, thereby meeting the requirements of subsequent high-precision processing.

[0005] To achieve the above objectives, this utility model provides a grinding and centering device for a conical lens optical fiber, the grinding and centering device comprising a rotating component, an adjusting component, and a grinding component; The rotating assembly includes a rotary motor and an optical fiber clamping component. The output shaft of the rotary motor is arranged along a first direction, and the optical fiber clamping component is used to clamp the optical fiber to be polished extending along the first direction. The adjustment assembly includes a first adjustment member and a second adjustment member. The output shaft of the rotary motor is connected to the first adjustment member in a transmission manner. The first adjustment member is used to drive the second adjustment member to move along a second direction, and the second adjustment member is used to drive the optical fiber clamp to move along a third direction. The polishing assembly includes a polishing motor and a polishing disc. The output shaft of the polishing motor is connected to the polishing disc for polishing the optical fiber to be polished.

[0006] Optionally, the first adjusting member includes a first fixed platform, a first sliding platform, and a first micrometer. The first fixed platform is drivenly connected to the output shaft of the rotary motor. The first sliding platform is slidably arranged on the first fixed platform along a second direction. The first micrometer is located on the first fixed platform, and the output end of the first micrometer abuts against the first sliding platform. The second adjusting member is located on the first sliding platform.

[0007] Optionally, the adjustment assembly further includes an adapter plate, the output shaft of the rotary motor is perpendicularly connected to the adapter plate, and the first fixed platform is located on the adapter plate.

[0008] Optionally, the optical fiber clamping device includes a limiting tube and a clamping unit. The axial direction of the limiting tube extends along a first direction. The limiting tube is used to insert and position the optical fiber to be polished. One end of the limiting tube is inserted into the clamping unit, which is used to clamp the optical fiber to be polished.

[0009] Optionally, the clamping unit includes a support base and a cover plate. One end of the limiting tube is inserted into the support base. The support base is provided with a V-shaped groove extending along a first direction. The V-shaped groove is used to insert and position the optical fiber to be polished. The cover plate is detachably connected to the support base to press the optical fiber to be polished.

[0010] Optionally, a set screw is inserted into the support base, the set screw is arranged perpendicularly to the limiting tube, and the set screw is used to push against the outer peripheral wall of the limiting tube.

[0011] Optionally, the grinding and centering device further includes a water spray pipe for spraying water onto the grinding disc.

[0012] Optionally, in the first direction, the length of the optical fiber to be polished protruding from the optical fiber holder is 0.3-0.6 mm.

[0013] Optionally, the polishing and centering device further includes a CCD detection unit, which is used to take pictures and detect the optical fiber to be polished.

[0014] Optionally, the grinding and centering device further includes a beam quality analyzer, which is used to detect the eccentricity of the optical fiber after grinding.

[0015] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0016] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include: The grinding and centering device for tapered lens optical fibers provided in this embodiment of the invention first clamps and fixes the optical fiber to be ground using an optical fiber holder. At this time, the corresponding optical fiber on the holder extends along a first direction, with one end protruding from the holder. Then, the first and second adjusting members drive the optical fiber to be ground to move along a second and a third direction, making the axial direction of the optical fiber coaxial with the rotation center corresponding to the output shaft of the rotary motor. This results in high eccentricity accuracy of the final ground tapered optical fiber, meeting the requirements of high-precision processing.

[0017] Next, the optical fiber to be polished is brought into contact with the polishing disc, and the polishing motor and the rotary motor are started, so that both the polishing disc and the optical fiber to be polished rotate, thereby polishing the optical fiber into a conical shape.

[0018] In other words, the grinding and centering device for conical lens optical fibers provided in this embodiment of the present invention can adjust the axial position of the optical fiber to be ground before processing by adjusting the components, so that the axial direction of the optical fiber to be ground is coaxial with the rotation center corresponding to the output shaft of the rotary motor, thereby meeting the requirements of subsequent high-precision processing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a grinding and centering device for a conical lens optical fiber provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the adjustment component provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the CCD detection unit detecting the position of the optical fiber to be polished, provided in an embodiment of this utility model. Figure 4 This is a schematic diagram of the structure of the optical fiber clamping component provided in this embodiment of the utility model.

[0020] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Rotating assembly; 11. Rotary motor; 12. Fiber optic clamp; 121. Limiting tube; 122. Support base; 123. Cover plate; 124. Connecting plate; 2. Adjusting assembly; 21. First adjusting component; 211. First fixed stage; 212. First sliding stage; 213. First micrometer; 214. First base; 22. Second adjusting component; 221. Second sliding stage; 222. Second micrometer; 223. Second base; 23. Adapter plate; 3. Grinding assembly; 31. Grinding motor; 32. Grinding disc; 4. CCD detection unit; 5. Beam quality analyzer; 100. Fiber optic cable to be ground. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] Example: Figure 1 This is a schematic diagram of a grinding and centering device for a conical lens optical fiber provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the grinding and centering device includes a rotating component 1, an adjusting component 2, and a grinding component 3.

[0027] The rotating assembly 1 includes a rotating motor 11 and an optical fiber clamping member 12. The output shaft of the rotating motor 11 is arranged along a first direction (e.g., the X-axis direction), and the optical fiber clamping member 12 is used to clamp the optical fiber 100 to be polished extending along the first direction.

[0028] Figure 2 This is a schematic diagram of the structure of the adjustment component provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the adjustment assembly 2 includes a first adjustment member 21 and a second adjustment member 22. The output shaft of the rotary motor 11 is connected to the first adjustment member 21 for transmission. The first adjustment member 21 is used to drive the second adjustment member 22 to move along a second direction (e.g., the Y-axis direction). The second adjustment member 22 is used to drive the fiber optic clamp 12 to move along a third direction (e.g., the Z-axis direction).

[0029] The polishing assembly 3 includes a polishing motor 31 and a polishing disc 32. The output shaft of the polishing motor 31 is connected to the polishing disc 32 for transmission. The polishing disc 32 is used to polish the optical fiber 100 to be polished.

[0030] In the grinding and centering device for a tapered lens fiber provided in this embodiment of the invention, when grinding the fiber 100 to be ground, the fiber 100 is first clamped and fixed by the fiber clamp 12. At this time, the corresponding fiber on the fiber clamp 12 extends along the first direction, and one end protrudes from the fiber clamp 12. Then, the fiber 100 to be ground is driven to move along the second direction and the third direction by the first adjusting member 21 and the second adjusting member 22, so that the axial direction of the fiber 100 to be ground is coaxial with the rotation center corresponding to the output shaft of the rotary motor 11, thereby making the tapered fiber after grinding have high eccentricity accuracy and meeting the requirements of high-precision processing.

[0031] Next, the optical fiber 100 to be polished is brought into contact with the polishing disc 32, and the polishing motor 31 and the rotary motor 11 are started, so that both the polishing disc 32 and the optical fiber 100 to be polished rotate, thereby polishing the optical fiber 100 into a conical shape.

[0032] In other words, the grinding and centering device for a conical lens fiber provided in this embodiment of the present invention can adjust the axial position (in two directions) of the fiber to be ground 100 before processing by adjusting component 2, so that the axial direction of the fiber to be ground 100 is coaxial with the rotation center corresponding to the output shaft of the rotary motor 11, thereby meeting the requirements of subsequent high-precision processing.

[0033] In addition, the optical fiber 100 to be polished and the optical fiber holder 12 rotate synchronously, and there is no relative displacement between them. The optical fiber maintains its posture during polishing, which can efficiently process the end face of the optical fiber into a tapered shape.

[0034] For example, the grinding and centering device also includes a transverse module, which is used to drive the rotary motor 11 to move along a first direction. Before adjustment, the optical fiber 100 to be ground and the grinding disk 32 can be spaced apart to facilitate coaxial adjustment of the optical fiber 100 to be ground, while before grinding, the optical fiber 100 to be ground is made to contact the grinding disk 32.

[0035] For example, in the first direction, the length of the fiber to be polished 100 protruding from the fiber clamp 12 can be 0.3-0.6 mm, preferably 0.4 mm. In addition, the polishing disc 32 is arranged at an angle relative to the fiber to be polished 100, and the tilt angle of the polishing disc 32 can be adjusted to meet different processing requirements.

[0036] It should be noted that, in the process of adjusting the optical fiber 100 to be ground so that its axis is coaxial with the rotation center corresponding to the output shaft of the rotary motor 11, tools such as microscopes, marking lines or cameras can be used for auxiliary positioning to ensure adjustment accuracy.

[0037] In one implementation of this utility model, the grinding and centering device further includes a CCD detection unit 4, which is used to take pictures and detect the optical fiber 100 to be ground.

[0038] Specifically, the position of the optical fiber within the frame is observed using the CCD detection unit 4. Figure 3 As shown, firstly, adjust the first adjusting component 21 so that the optical fiber 100 to be polished is within the frame line; secondly, adjust the rotary motor 11 so that the optical fiber 100 to be polished rotates 90°, and then adjust the second adjusting component 22 so that the optical fiber 100 to be polished is also within the frame line; finally, adjust the rotary motor 11 to rotate one revolution and observe the position of the optical fiber 100 to be polished in the CCD detection unit 4. If the position of the optical fiber 100 to be polished remains unchanged after one revolution, it indicates that the adjustment component 2 has been adjusted. At this time, the axial direction of the optical fiber 100 to be polished is coaxial with the rotation center corresponding to the output shaft of the rotary motor 11.

[0039] See also Figure 2 In this embodiment, the first adjusting member 21 includes a first fixed platform 211, a first sliding platform 212, and a first micrometer 213. The first fixed platform 211 is connected to the output shaft of the rotary motor 11. The first sliding platform 212 is slidably arranged on the first fixed platform 211 along the second direction. The first micrometer 213 is located on the first fixed platform 211, and the output end of the first micrometer 213 abuts against the first sliding platform 212. The second adjusting member 22 is located on the first sliding platform 212.

[0040] In the above embodiment, the first micrometer 213 on the first fixed platform 211 can push the first sliding platform 212 to move with high precision, thereby achieving precise adjustment of the optical fiber 100 to be polished in the second direction.

[0041] For example, a first base 214 is provided on the first fixed platform 211, and a first micrometer 213 is disposed through the first base 214. In addition, the first sliding platform 212 is arranged in a U-shape, and the first fixed platform 211 is located in the opening of the first sliding platform 212.

[0042] Furthermore, the adjustment assembly 2 also includes an adapter plate 23, the output shaft of the rotary motor 11 is perpendicularly connected to the adapter plate 23, and the first fixed platform 211 is located on the adapter plate 23. The adapter plate 23 serves to connect the output shaft of the rotary motor 11 and the first fixed platform 211, facilitating the installation of the first fixed platform 211.

[0043] Similarly, the second adjusting member 22 includes a second sliding stage 221 and a second micrometer 222. The second sliding stage 221 is slidably arranged on the first sliding stage 212 along a third direction. The second micrometer 222 is located on the second sliding stage 221, and the output end of the second micrometer 222 abuts against the first sliding stage 212. The fiber optic clamp 12 is located on the second sliding stage 221. In addition, a second base 223 is also provided on the second sliding stage 221, and the second micrometer 222 is arranged through the second base 223.

[0044] In addition, the first sliding table 212 and the second sliding table 221 are respectively provided with waist-shaped holes, and each waist-shaped hole is movably inserted with a connecting bolt. The connecting bolt passes through the corresponding waist-shaped hole and connects to the corresponding first fixed table 211 or first sliding table 212, thereby locking the sliding table after adjustment and preventing accidental movement during rotation.

[0045] Figure 4 This is a structural schematic diagram of the fiber optic clamping component provided in an embodiment of the present invention, as shown below. Figure 4 As shown, the fiber optic clamping member 12 includes a limiting tube 121 and a clamping unit. The limiting tube 121 extends axially along a first direction and is used to insert and position the fiber optic cable 100 to be polished. One end of the limiting tube 121 is inserted into the clamping unit, which is used to clamp the fiber optic cable 100 to be polished. The limiting tube 121 positions the fiber optic cable 100, while the clamping unit clamps and fixes it, ensuring that the fiber optic cable 100 is arranged along the first direction while being reliably fixed on the fiber optic clamping member 12.

[0046] Furthermore, the clamping unit includes a support base 122 and a cover plate 123. One end of the limiting tube 121 is inserted into the support base 122. The support base 122 is provided with a V-shaped groove extending in the first direction. The V-shaped groove is used to insert and position the optical fiber 100 to be polished. The cover plate 123 is detachably connected to the support base 122 to press the optical fiber 100 to be polished.

[0047] In the above embodiment, the V-groove can be used to position the optical fiber 100 to be polished, and the cover plate 123 can be used to clamp the optical fiber 100 to be polished.

[0048] For example, the support base 122 is cylindrical in shape and has an opening in its middle. A V-groove is located inside the support base 122, and a cover plate 123 is fitted into the opening, so that the optical fiber 100 to be polished is arranged coaxially with the optical fiber holder 12, which facilitates the adjustment of the optical fiber 100 to be polished. In addition, a connecting plate 124 is coaxially provided at the right end of the support base 122, and the connecting plate 124 is fixed on the second sliding table 221.

[0049] In addition, a set screw (not shown) is inserted on the support base 122. The set screw is arranged perpendicularly to the limiting tube 121. The set screw is used to push the outer peripheral wall of the limiting tube 121. The set screw can fix the limiting tube 121 in the support base 122 and prevent the limiting tube 121 from coming off the support base 122 during rotation.

[0050] In one embodiment of this utility model, the grinding and centering device further includes a water spray pipe (not shown in the figure), which is used to spray water onto the grinding disc 32.

[0051] It is easy to understand that during the polishing process, a large amount of slag will accumulate on the surface of the polishing disc 32. As the polishing disc 32 rotates at an angle, it will cause the slag to move, which can easily collide with the tip of the optical fiber, causing damage to the tip. By spraying water onto the polishing disc 32, the slag on the surface can be removed in time, effectively preventing the slag generated during the polishing process from damaging the tip of the optical fiber.

[0052] In this embodiment, the polishing and centering device further includes a beam quality analyzer 5, which is used to detect the eccentricity of the polished optical fiber. Specifically, an optical signal is introduced into the polished optical fiber, and the beam quality analyzer 5 detects the optical signal to detect the eccentricity of the polished optical fiber. The ellipticity value is used for evaluation; a larger ellipticity indicates better eccentricity.

[0053] For example, if the ellipticity is ≥80%, the evaluation is qualified, and the cover plate 123 can be opened to take out the optical fiber; if the ellipticity is <80%, it means that the eccentricity of the optical fiber after polishing is not good, and it needs to be polished again until its ellipticity meets the requirements.

[0054] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grinding and centering device for a conical lens optical fiber, characterized in that, The grinding and centering device includes a rotating component, an adjusting component, and a grinding component; The rotating assembly includes a rotary motor and an optical fiber clamping component. The output shaft of the rotary motor is arranged along a first direction, and the optical fiber clamping component is used to clamp the optical fiber to be polished extending along the first direction. The adjustment assembly includes a first adjustment member and a second adjustment member. The output shaft of the rotary motor is connected to the first adjustment member in a transmission manner. The first adjustment member is used to drive the second adjustment member to move along a second direction, and the second adjustment member is used to drive the optical fiber clamp to move along a third direction. The polishing assembly includes a polishing motor and a polishing disc. The output shaft of the polishing motor is connected to the polishing disc for polishing the optical fiber to be polished.

2. The grinding and centering device for a conical lens optical fiber according to claim 1, characterized in that, The first adjusting member includes a first fixed platform, a first sliding platform, and a first micrometer. The first fixed platform is drivenly connected to the output shaft of the rotary motor. The first sliding platform is slidably arranged on the first fixed platform along a second direction. The first micrometer is located on the first fixed platform, and the output end of the first micrometer abuts against the first sliding platform. The second adjusting member is located on the first sliding platform.

3. The grinding and centering device for a conical lens optical fiber according to claim 2, characterized in that, The adjustment assembly also includes an adapter plate, the output shaft of the rotary motor is perpendicularly connected to the adapter plate, and the first fixed platform is located on the adapter plate.

4. The grinding and centering device for a conical lens optical fiber according to claim 1, characterized in that, The optical fiber clamping component includes a limiting tube and a clamping unit. The axial direction of the limiting tube extends along a first direction. The limiting tube is used to insert and position the optical fiber to be polished. One end of the limiting tube is inserted into the clamping unit, which is used to clamp the optical fiber to be polished.

5. A grinding and centering device for a conical lens optical fiber according to claim 4, characterized in that, The clamping unit includes a support base and a cover plate. One end of the limiting tube is inserted into the support base. The support base is provided with a V-shaped groove extending along a first direction. The V-shaped groove is used to insert and position the optical fiber to be polished. The cover plate is detachably connected to the support base to press the optical fiber to be polished.

6. The grinding and centering device for a conical lens optical fiber according to claim 5, characterized in that, A set screw is inserted into the support base. The set screw is arranged perpendicularly to the limiting tube and is used to push against the outer peripheral wall of the limiting tube.

7. The grinding and centering device for a conical lens optical fiber according to claim 1, characterized in that, The grinding and centering device also includes a water spray pipe, which is used to spray water onto the grinding disc.

8. A grinding and centering device for a conical lens optical fiber according to claim 1, characterized in that, In the first direction, the length of the optical fiber to be ground protruding from the optical fiber holder is 0.3-0.6 mm.

9. A grinding and centering device for a conical lens optical fiber according to any one of claims 1 to 8, characterized in that, The grinding and centering device also includes a CCD detection unit, which is used to take pictures and detect the optical fiber to be ground.

10. A grinding and centering device for a conical lens optical fiber according to any one of claims 1 to 8, characterized in that, The grinding and centering device also includes a beam quality analyzer, which is used to detect the eccentricity of the optical fiber after grinding.

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