A preparation method of transparent nanocrystalline composite glass optical fiber
A nanocrystal composite, glass fiber technology, applied in glass manufacturing equipment, lasers, manufacturing tools and other directions, can solve the problems of affecting optical fiber optical properties, fluorescent nanocrystal melting, complex process, etc., to achieve short preparation time, improve efficiency, simple craftsmanship
Active Publication Date: 2020-09-22
SOUTH CHINA UNIV OF TECH
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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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[0039] (1)Y 2 O 3 : 7% Er 3+ Preparation of fluorescent nanocrystals:
[0040] Prepare by co-precipitation method, first mix the corresponding cation solution according to the stoichiometric ratio, and perform magnetic stirring at the same time. After stirring for 10 minutes, add an appropriate amount of C 16 H 33 (CH 3 ) 3 NBr(CTAB). Then place the mixed solution under 80KHz ultrasonic for 15min, add an appropriate amount of CO(NH 2 ) 2 Ultrasound at the same frequency for 1 hour, and then heat the mixed solution to 90°C for 1.5 hours to obtain a white precipitate. Then the white precipitate was washed and centrifuged several times with distilled water and absolute ethanol, and the obtained product was dried at 70°C for 12 hours, and placed in a box furnace at a rate of 3°C / min to 500-1200°C for heat treatment for 2 hours. Y obtained 2 O 3 : 7% Er 3+ The morphology of the fluorescent nanocrystal is like figure 1 Shown.
[0041] (2) Preparation of core glass and cladding glass tub...
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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 method for preparing a transparent nanocrystalline composite glass optical fiber. Background technique [0002] Rare earths have received extensive attention from researchers due to their rich energy levels, strong absorption capacity, and high conversion efficiency. The pros and cons of the matrix they are in determine the level of luminous efficiency. At present, the research on matrix materials mostly focuses on glass and crystal materials. Although glass materials are easy to process and can draw fibers, they have low luminous efficiency and it is difficult to achieve laser output. Crystal materials have great advantages in luminous efficiency. , But it is not easy to process, and it is difficult to prepare high-quality optical fiber, which limits its application in optical fiber devices. [0003] Fluorescent nanocrystalline composite glass combines the advantages of hig...
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IPC IPC(8): C03B37/027C03B37/012C03C13/04H01S3/067
CPCC03B37/012C03B37/027C03C13/048H01S3/06716
Inventor 董国平康世亮黄雄健杨中民邱建荣
Owner SOUTH CHINA UNIV OF TECH