Cable-shaped bendable high-power optical fiber amplification module

Abstract

The invention relates to the technical field of laser, in particular to a cable-shaped bendable high-power optical fiber amplification module. The cable-shaped bendable high-power optical fiber amplification module comprises: a passive optical fiber hose, wherein a first three-ring type light guide hose is arranged in the passive optical fiber hose, and a passive optical fiber is arranged in the first three-ring type light guide hose; and a gain optical fiber hose, wherein a second three-ring type light guide hose is arranged in the gain optical fiber hose, a gain optical fiber is arranged inthe second three-ring type light guide hose, and the metal porous straight pipe comprises a welding point formed by the passive optical fiber and the gain optical fiber. The optical power amplifier ischanged into a cable-shaped bendable module from a fixed cube module, the use of the laser is facilitated, the passive optical fiber cable-shaped part of the cable-shaped bendable high-power opticalfiber amplification module provided by the invention can be lengthened, and when the laser and a processed object cannot be close to each other, the passive optical fiber cable-shaped part can be lengthened, so that the laser output position is close to the processing area.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a cable-shaped bendable high-power optical fiber amplification module. Background technique [0002] Doped optical fiber is an optical fiber with special properties formed by doping trace rare earth elements into the silica glass matrix of the optical fiber. The concentration, type, and properties of doped rare earth elements change; with the deepening of research on rare earth-doped fiber lasers, it has quickly entered the practical stage. Rare-earth-doped fiber lasers have small signal crosstalk, The advantages of low loss and easy coupling have been widely used in many fields, such as optical fiber communication, optical fiber sensing, industrial processing, medical treatment and national defense. With the continuous improvement of fiber coupling technology, rare earth doped fiber technology, and single-mode low-loss fiber technology, fiber lasers have made breakthroughs in hi...

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Problems solved by technology

[0005] The present invention aims at the above-mentioned deficiencies existing in the existing optical fiber amplifiers, and provides a cable-shaped bendable high-power optical fiber amplification module, which solves the problem of using optical fibers as the output mode in the existing optical fiber amplifiers. , the optical path will be extended to a certain extent, which increases the length of the optical fiber optical path, reduces the ability of the optical path to withstand nonlinearity, and is difficult to apply to the technical problems in the field of ultrafast lasers; at the same time, it solves the problem that if a fixed multiple When a reflector is used to guide light, the portability and mobility are poor. For example, using a relatively fixed light guide arm not only requires high machining accuracy, but also has unsatisfactory flexibility. When the laser and the object to be processed cannot be approached, The technical problem of poor applicability of existing optical fiber amplifiers

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