Non-water treatment agent used for surface enhanced treatment of fluorozirconate glass optical fiberpreform rod and treatment method

Abstract

The invention discloses a non-water treatment agent used for surface enhanced treatment of a fluorozirconate glass optical fiber preform rod and a treatment method. The non-water treatment agent is formed by an acid part, a zircon salt part and an organic solvent part at a certain matching ratio, wherein the acid part comprises HCl, H3PO4 and CH3COOH at a certain proportion; the zircon salt part comprises Zr(NO3)4, Zr(OH)4 and ZrOCl2 at a certain proportion; the organic solvent comprises CH3CH2OH, THF and CH3COCH3 at a certain proportion. According to the non-water treatment agent and the treatment method provided by the invention, surface defects (microcracks), surface impurities and a surface layer with non-uniform chemical composition of the fluorozirconate glass optical fiber preform rod can be effectively removed, so that the risk of crystallization or devitrification in an optical fiber drawing process of the optical fiber preform rod is greatly lowered. An optical fiber drawn bythe fluorozirconate glass optical fiber preform rod treated by the non-water treatment agent and the treatment method has the characteristics of being higher in strength and less in loss.

Description

technical field [0001] The invention relates to a non-aqueous treatment agent and a treatment method for enhancing the surface of a fluorozirconate glass optical fiber preform. The non-aqueous treatment agent can effectively remove surface defects, impurities and chemical composition of the fluorozirconate optical fiber preform. The uniform surface layer prevents the optical fiber strength from being reduced or broken due to the expansion of microcracks during the optical fiber drawing process. transparent risk. The optical fiber drawn from the fluorozirconate glass optical fiber preform processed by the processing method provided by the invention has the characteristics of higher strength and lower loss. Background technique [0002] In recent years, the wide application of mid-infrared laser in military, communication, medicine, environmental science and other fields has made it a research hotspot in the field of luminescence. Fluorozirconate glass has the advantages of ...

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Problems solved by technology

[0003] Although fluorozirconate glass has outstanding advantages as a matrix glass, studies have shown that there are also some disadvantages. The main reason is that its surface has poor chemical stability and is easily eroded by water molecules. Mildew spots[1,2]; in water or aqueous solution environment, insoluble hydroxides and fluorine hydroxides are easily formed on the surface[3,4,5,6], which may cause devitrification of the glass

Based on the surface chemical characteristics of fluorozirconate glass, its optical fiber preform may appear devitrification or devitrification when drawing optical fiber [7,8,9,10], high interface loss and weak mechanical properties of optical fiber , these problems have been paid attention to and researched [11], but the existing treatment agents used in the surface enhancement treatment are mainly aqueous solutions, and the design ideas of the composition of the treatment agent are as follows: surface ions and treatment agents for strengthening fluorozirconate glass The solubility of the reaction product in water does not leave the aqueous solution system [12], water as a factor of surface damage of fluorozirconate glass is only limited or weakened but not finally eliminated, so there are still risks of devitrification and crystallization; Or use plasma etching to remove the surface. This treatment method has limitations in processing sample size, shape and price [13]

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