Optical fiber adjustable clamp

Abstract

The invention belongs to the field of optical fiber clamps, and particularly discloses an optical fiber adjustable clamp. The clamp has an XY-plane random adjustment capability structure, and can clamp the double-clad optical fiber sleeve. The main body part comprises a concave base and a double-convex base which are arranged up and down. A V-shaped groove capable of clamping a glass sleeve and acorresponding fixing and protecting assembly are arranged on the upper half part of the base. a spring is arranged in the joint of the two bases, and the two ends of the spring are fixed to the lowersurface of the upper base and the upper surface of the lower base respectively. Fine adjustment thrust is applied to the upper half part of the base by matching with a micrometer caliper, so that relative displacement difference can be generated between the upper and lower parts of the base, and the pair of clamps is matched for use, so that the optical fiber can be randomly adjusted in an XY plane. The device can adapt to the diameter of the double-clad large-mode-field optical fiber, the influence of refractive index mismatch caused by the cylindrical structure of the optical fiber is eliminated, and the laser processing precision is improved.

Description

Technical field [0001] The invention belongs to the field of optical fiber clamps, and more specifically, relates to an optical fiber adjustable clamp. Background technique [0002] Femtosecond laser processing uses the characteristics of light and transparent material interaction to modify the material, and has been widely used in micro-nano optical devices, optical waveguide devices, and fiber optic devices, and has broad application prospects in emerging fields such as optical storage. Femtosecond laser is an effective technical method for processing all-fiber devices, such as F-P resonators, micro-channels, and grating devices. With its precision processing methods, it can even be locally positioned in the fiber core. [0003] Optical fiber is a cylindrical dielectric waveguide composed of three parts: core, cladding and coating. The core diameter of ordinary single-mode and few-mode fibers is generally about 8-20um, and the cladding diameter is 125um. During optical fiber pr...

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Problems solved by technology

[0005] In view of the defects of the prior art, the purpose of the present invention is to provide an adjustable fixture for double-clad large-mode-field optical fibers, aiming to solve the problem that traditional optical fiber fixtures cannot adapt to the diameter of double-clad large-mode-field optical fibers and the laser processing accuracy is not high. The problem

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