Fiber grating and cladding light stripper integrated device

Abstract

This utility model relates to the field of optical fiber technology and discloses an integrated device of fiber optic grating and cladding light stripper, including a main optical fiber and a cladding light stripper. The cladding light stripper is disposed outside the main optical fiber. The main optical fiber includes an optical fiber cladding and a fiber core disposed within the optical fiber cladding. A grating is disposed on the fiber core. An etched area is etched on the optical fiber cladding by CO2 laser etching. The etched area includes a plurality of etched grooves disposed along the axis of the main optical fiber. The etched area is correspondingly disposed on the outer layer of the grating.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber technology, and in particular to an integrated device of fiber optic grating and cladding stripper. Background Technology

[0002] In an optical system, the cladding stripper is a separate device that needs to be fused to the back of the device to strip the pump cladding light. In the optical path, each additional fusion point adds another potential source of heat generation.

[0003] Conventional laser output paths typically use QBH connectors. The cladding stripper, after fabrication, is integrated within the water-cooled QBH package. The cladding stripper is used to strip power; the stripping process itself generates significant heat, posing a risk of direct burnout. If the integrated cladding stripper overheats and burns out, the entire QBH will fail and be destroyed, making it unrecoverable and resulting in substantial cost waste. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an integrated device of fiber optic grating and cladding stripper, which reduces the number of fusion points of separately fused cladding stripper devices, improves the risk of overheating or burnout, and reduces costs.

[0005] The technical solution of this utility model is as follows: an integrated device of fiber optic grating and cladding light stripper, including a main optical fiber and a cladding light stripper, wherein the cladding light stripper is disposed outside the main optical fiber, the main optical fiber includes an optical fiber cladding and a fiber core disposed within the optical fiber cladding, an optical grating is disposed on the fiber core, and an etched area is etched on the optical fiber cladding by CO2 laser etching, wherein the etched area includes a plurality of etched grooves disposed along the axis of the main optical fiber, and the etched area is correspondingly disposed on the outer layer of the optical grating.

[0006] As can be seen from the above scheme, this utility model reduces the number of fusion points of separately fused CPS devices by externalizing the cladding stripper and integrating it with the fiber optic grating. This improves / reduces the risk of overheating or burnout. After externalizing the CPS, QBH failures can be recycled, which can reduce costs. The etching groove is formed by laser etching.

[0007] The cladding optical stripper includes a housing and a top cover disposed on the housing. The housing has an opening slot, and a limiting slot corresponding to the opening slot is provided inside the housing to fit the main optical fiber. Through holes communicating with the limiting slots are provided at both ends of the housing. Therefore, the limiting slot is used to limit the main optical fiber, and the through holes allow the main optical fiber to extend from both sides of the cladding optical stripper.

[0008] The limiting groove has clearance grooves at both ends, and the width of the clearance grooves is greater than the diameter of the main optical fiber. Therefore, the clearance grooves are used to allow clearance when the main optical fiber is placed.

[0009] The etching grooves are arranged in a spiral around the surface of the main optical fiber.

[0010] The depth of the through hole is less than the depth of the limiting groove. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0013] Figure 3 This is an exploded view of this utility model;

[0014] Figure 4 This is a schematic diagram of the fiber core structure. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] like Figures 1 to 4 As shown, this utility model is an integrated device of fiber optic grating and cladding stripper, including a main optical fiber 1 and a cladding stripper 2. The cladding stripper 2 is disposed outside the main optical fiber 1. The main optical fiber 1 includes an optical fiber cladding 11 and a fiber core 12 disposed within the optical fiber cladding 11. A grating 3 is disposed on the fiber core 12. An etched area is etched on the optical fiber cladding 11 by CO2 laser etching. The etched area includes a plurality of etched grooves 4 disposed along the axis of the main optical fiber 1. The etched area is correspondingly disposed on the outer layer of the grating 3. In this embodiment, the area of ​​the etched area is larger than the area of ​​the grating 3. The grating 3 includes a high-reflection grating (HR) and a low-reflection grating (OC). The integrated device with the CPS can be either HR+CPS or OC+CPS. For the fabrication of the CPS (cladding stripper 2), carbon dioxide CO2 laser etching is used to etch a ring around the optical fiber cladding to form the CPS. Laser-etched CPS has several advantages over chemically etched CPS: it is cleaner, leaves no pollution or impurities, is more environmentally friendly, has stronger mechanical stress, allows for greater fiber bending curvature, and is less prone to breakage.

[0017] The cladding optical stripper 2 includes a housing 21 and a top cover 22 disposed on the housing 21. The housing 21 has an opening slot 23, and a limiting slot 24, corresponding to the opening slot 23, is provided inside the housing 21 to fit the main optical fiber 1. Through holes 211 communicating with the limiting slots 24 are provided at both ends of the housing 21. In this embodiment, the housing 21 and the top cover 22 are connected by screws to form the entire cladding optical stripper, and the limiting slots 24 are used to limit the movement of the main optical fiber 1.

[0018] The limiting groove 24 is provided with clearance grooves 241 at both ends, and the width of the clearance grooves 241 is greater than the diameter of the main optical fiber 1.

[0019] The etching groove 4 is arranged in a spiral around the surface of the main optical fiber 1.

[0020] The depth of the through hole 211 is less than the depth of the limiting groove 24.

[0021] The workflow of this utility model is as follows: a fiber grating 3 is etched on the main fiber 1, and then, corresponding to the etched grating area, CO2 laser etching is performed on the surface of the fiber cladding 11 using a loop. Subsequently, packaging and testing are carried out to form an integrated device of fiber grating and cladding stripper.

[0022] Finally, it should be emphasized that the above description is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated device of fiber optic grating and cladding stripper, comprising a main optical fiber (1) and a cladding stripper (2), characterized in that: The cladding stripper (2) is disposed outside the main optical fiber (1). The main optical fiber (1) includes an optical fiber cladding (11) and a fiber core (12) disposed within the optical fiber cladding (11). A grating (3) is disposed on the fiber core (12). An etching area is etched on the surface of the optical fiber cladding (11) by a CO2 laser. The etching area includes a plurality of etching grooves (4) disposed along the axis of the main optical fiber (1). The etching area is disposed on the outer layer of the grating (3).

2. The integrated fiber optic grating and cladding stripper device according to claim 1, characterized in that: The cladding stripper (2) includes a housing (21) and a top cover (22) disposed on the housing (21). The housing (21) has an opening slot (23). The housing (21) has a limiting slot (24) corresponding to the opening slot (23) and adapted to the main optical fiber (1). The housing (21) has through holes (211) at both ends that communicate with the limiting slot (24).

3. The integrated fiber optic grating and cladding stripper device according to claim 2, characterized in that: The limiting groove (24) has clearance grooves (241) at both ends, and the width of the clearance grooves (241) is greater than the diameter of the main optical fiber (1).

4. The integrated fiber optic grating and cladding stripper device according to claim 1, characterized in that: The etching groove (4) is arranged in a spiral around the surface of the main optical fiber (1).

5. The integrated fiber optic grating and cladding stripper device according to claim 2, characterized in that: The depth of the through hole (211) is less than the depth of the limiting groove (24).

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