Optical fiber collimator

Abstract

The invention relates to an optical fiber collimator which comprises optical fibers, an optical fiber inserting core, an optical fiber inserting core fixing piece, an optical fiber inserting core fastener, a collimating lens, a collimator structure piece and a tail protection sleeve. The optical fiber collimator has the advantages that the optical fiber inserting core is fixed through machines in a welding reinforcing mode; meanwhile, the optical fiber inserting core fixing piece is fixed with the laser welding technology, the reliability of the optical fiber collimator is improved, the end faces of the optical fibers are slope end faces, feedback of high-power lasers can be avoided, and when polarization maintaining optical fibers are used, the polarization direction of the optical fiber collimator has the good coincidence. The optical fiber collimator has the advantages of being convenient to install and debug, high in temperature stability, high in mechanical stability and the like.

Description

technical field [0001] The invention relates to an optical fiber, in particular to an optical fiber collimator. Background technique [0002] Optical fiber collimators are widely used in sensing, laser welding, laser cladding, space laser communication and other fields. At present, most optical fiber collimators are composed of optical fibers, ferrules, collimating lenses and mechanical outer sleeves. The optical fibers are fixed on the ferrules. , and the fiber optic ferrule and collimator lens are generally fixed in the mechanical jacket with glue. When the temperature changes or in the mechanical environment, there are shortcomings such as divergence angle changes and beam pointing changes, which directly affect its usability. When the fiber collimator is used Too much glue will volatilize in the vacuum state of the space environment, directly affect the end face of the fiber collimator, increase the loss, and directly burn the collimator when the power is high. Content...

AI Technical Summary

Problems solved by technology

[0002] Optical fiber collimators are widely used in sensing, laser welding, laser cladding, space laser communication and other fields. At present, most optical fiber collimators are composed of optical fibers, ferrules, collimating lenses and mechanical outer sleeves. The optical fibers are fixed on the ferrules. , and the fiber optic ferrule and collimator lens are generally fixed in the mechanical jacket with glue. When the temperature changes or in the mechanical environment, there are shortcomings such as divergence angle changes and beam pointing changes, which directly affect its usability. When the fiber collimator is used In the vacuum state of the space environment, too much glue will volatilize, directly affect the end face of the fiber collimator, increase the loss, and directly burn the collimator when the power is high

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