Preparation device and method of crystal optical fibers

Abstract

The invention belongs to the technical field of optical fiber preparation, and particularly relates to a preparation device and method of crystal optical fibers. The preparation device of the crystaloptical fibers is characterized by comprising a heat-preservation furnace, a heating light source assembly, a rod feeding device and a lifting device, wherein a graphite piece is arranged in a furnacebody, the heating light source assembly comprises a CO2 laser device and a parabolic mirror, the rod feeding device is used for fixing crystal prefabricated rods and feeding rod bodies into the furnace, the lifting device is used for lifting and pulling crystals, a support is arranged in the heat-preservation furnace, the parabolic mirror is mounted at the top of the support, and light beams of the CO2 laser device form a heating source in an internal thermal field of the graphite piece through convergence of the parabolic mirror. According to the preparation device and method of the crystaloptical fibers, the heat-preservation furnace is combined with an LHPG technology, the LHPG technology provides the heating source, the heat-preservation furnace provides the reasonable thermal fieldto accurately control the temperature of the preparation environment of the crystal optical fibers, the advantages of the heat-preservation furnace and the LHPG technology are exerted, thus the crystal optical fibers can be crystallized better and release stress step by step in the preparation process, and the purpose of preparing the high-quality crystal optical fibers is achieved.

Description

technical field [0001] The invention belongs to the technical field of optical fiber preparation, in particular to a preparation device and method for crystal optical fiber. Background technique [0002] Crystal fiber is a new type of high-performance fiber material, which is different from traditional silica fiber. Crystal fiber uses crystals (such as sapphire, YAG) as the core material and has a waveguide structure similar to silica fiber. Compared with traditional silica fibers, crystal fibers have the advantages of high doping concentration of rare earth ions, high damage threshold, small stimulated Brillouin scattering coefficient, high tensile strength, good thermal performance, and corrosion resistance. Therefore, they can be widely used It is used in the fields of high-power fiber laser, high temperature, strong acid, strong alkali and other harsh environment sensing. [0003] Laser heated pedestal method (LHPG) is a commonly used technique for fabricating crystal f...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of excessive temperature changes in the optical fiber preparation process in the prior art, which leads to the deterioration of the quality of the crystal optical fiber, the present invention provides a new type of preparation device for the crystal optical fiber

Images