Preparation method of transparent nano-crystal composite glass optical fibers

Abstract

The invention discloses transparent nano-crystal composite glass optical fibers and a preparation method. The preparation method comprises the following steps: (1) preparing a Y2O3: Er<3+> fluorescentnano-crystal; (2) preparing germanium tellurate fiber core glass and grinding into powder; (3) uniformly mixing the fluorescent nano-crystal and the glass powder and carrying out sufficient ball milling; (4) preparing a cladded glass pipe, wherein the softening temperature is higher than the melting temperature of fluorescent nano-crystal composite glass; (5) filling grains obtained by step (3) into the cladded glass pipe to form a prefabricated rod; (6) drawing to obtain the optical fibers. The preparation method has the advantages that a technology is simple and a preparation process can becarried out at low temperature; the dispersion of elements can be effectively avoided, and an initial shape and optical performance of the fluorescent nano-crystal are kept very well; the prepared fluorescent nano-crystal composite glass optical fibers have good light transmission performance, can be used for efficiently emitting light and have an important application prospect in the fields including optical fiber amplifiers, tunable optical fiber laser devices and the like.

Description

technical field [0001] The invention relates to the field of optical fiber preparation, in particular to a preparation method of transparent nanocrystalline composite glass optical fiber. Background technique [0002] Due to their rich energy levels, strong absorption capacity, and high conversion efficiency, rare earths have attracted extensive attention from researchers. The quality of their substrate conditions determines the level of luminous efficiency. At present, the research on matrix materials is mostly focused on glass and crystal materials. Although glass materials are easy to process and can be drawn into optical fibers, their luminous efficiency is low and it is difficult to achieve laser output; although crystal materials have great advantages in luminous efficiency , but it is not easy to process, and it is difficult to prepare high-quality optical fibers, which limits its application in optical fiber devices. [0003] Fluorescent nanocrystalline composite g...

AI Technical Summary

Problems solved by technology

However, this method is complex, time-consuming, and requires a lot of raw materials, and the fluorescent nanocrystals have experienced two high-temperature conditions during the preparation process, which can easily lead to erosion of the fluorescent nanocrystals, making the environment of rare earth ions change from crystal materials to crystal materials. The advantages of high luminous efficiency of glass matrix and fluorescent nanocrystal composite glass fiber will disappear immediately, seriously affecting the optical characteristics of the fiber, which is not conducive to practical application

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