Selentellurium single crystal compound optical fiber and manufacturing method thereof

Abstract

The invention discloses a selentellurium single crystal compound optical fiber and a manufacturing method of the selentellurium single crystal compound optical fiber. The selentellurium single crystal compound optical fiber can be applied to efficient light frequency multipliers, infrared laser conduction, holographic data storage, raman laser, light sources and other fields. The fiber core of the selentellurium single crystal compound optical fiber is formed by single crystal selentellurium compounds, and an optical fiber cladding is formed by multi-component phosphate glass. According to the manufacturing method of the selentellurium single crystal compound optical fiber, the forming process of optical fibers of a wave-guiding structure and the optical fiber single crystallizing process are separated, and namely the fiber forming process and the single crystallizing process are separated. Accordingly, the control conditions of manufacturing the single crystal optical fiber are simplified, and large-length continuous single crystal optical fibers with high quality can be easily manufactured.

Description

technical field [0001] The invention relates to the technical field of composite material optical fiber and single crystal optical fiber, in particular to a selenium tellurium single crystal composite optical fiber and a preparation method thereof. Background technique [0002] Single crystal optical fiber has some unique functions that glass optical fiber does not have, and it has attracted more and more attention. High nonlinear single crystal fiber has important application value in nonlinear optics, such as frequency doubling, frequency combining, frequency difference, parametric oscillation, etc. The optical frequency doubling efficiency is inversely proportional to the square of the fundamental wave power density and the length of the medium. Since the bulk crystal has a higher power density only at the focal point, while the single crystal fiber confines the fundamental wave light in the core, within a rather long distance All maintain a high power level, so its ...

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Problems solved by technology

Due to the narrow range of melt viscosity near the melting point, there are many factors affecting the preparation of single crystal optical fiber, including heating power and power distribution, thermal conductivity characteristics of optical fiber materials, heat transfer characteristics of surrounding atmosphere, reaction characteristics of atmosphere and optical fiber materials, and optical fiber material melt. Viscosity changes with temperature, etc. Therefore, it is necessary to precisely and synergistically control various factors that affect the preparation of single crystal optical fibers at the same time. The control steps are complicated and the control conditions are harsh.

Moreover, the traditional single crystal optical fiber preparation method needs to use auxiliary tools such as crucible, guided mode, capillary, etc., so that the optical fiber is easily polluted

Ultimately, it is difficult to prepare single crystal optical fibers with uniform diameter, few defects, low loss, and continuous long length

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