Method for manufacturing fiber cladding power stripper

Abstract

The invention discloses a method for manufacturing a fiber cladding power stripper. The method comprises the following steps: firstly partitioning a doubly coated fiber which is required for manufacturing a power stripper into multiple region segments along the length direction; then partially stripping low-refraction coatings, namely external coatings, on the doubly coated fiber in the corresponding region segments so as to obtain required light power leakage window naked bodies, wherein relative rotation angles which take a fiber core as an axis exist among the adjacent required light power leakage window naked bodies; finally coating and curing the manufactured light power leakage window naked bodies by use of ultraviolet glue with high refractive index, thereby finishing the manufacturing of the fiber cladding power stripper. According to the method, the coatings on the fiber are partially stripped, multiple light power leakage windows are manufactured in a multi-region multi-angle mode, leaked light power is distributed in multiple regions of the fiber, so that the temperature of an initial leakage point of leaked light is greatly reduced, and the safe operation of devices is ensured.

Description

technical field [0001] The invention relates to the technical field of manufacturing an optical power stripper, in particular to a method for manufacturing an optical fiber cladding power stripper. Background technique [0002] As is known in the industry, fiber lasers and fiber amplifiers have become research hotspots in recent years due to their high conversion efficiency and good stability. In fiber lasers or fiber laser amplifiers, double-clad fibers doped with rare earth impurities are usually used as gain media, where the refractive index of the core is n 1 greater than the refractive index n of the inner cladding 2 , the refractive index n of the inner cladding 2 is greater than the refractive index n of the outer cladding 3 , namely n 1 >n 2 >n 3 . The fiber core serves as the transmission channel of the laser signal light, and the inner cladding serves as the transmission channel of the pump light. When the pump light is transmitted in the fiber, it is...

AI Technical Summary

Problems solved by technology

This method has certain shortcomings: because the refractive index of the material around the fiber cladding in the leakage window area is higher than that of the fiber core, the leaked light will radiate from around the cladding, and the heat generated will cause the temperature here to rise rapidly , especially at one end of the leakage window where the laser first passes through, a high temperature point 04 will be generated, such as image 3 shown

When the leakage power is greater, the temperature of the high temperature point will be higher, which will greatly threaten the safe operation of the laser, and seriously damage the optical fiber

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