紫外光致折射率变化的光敏玻璃的研究进展

RESEARCH PROGRESS OF PHOTOSENSITIVE GLASS WITH A MODULATION OF REFRACTIVE INDEX INDUCED BY THE EXPOSURE TO UV LIGHT

随着光纤通信和光纤传感技术的快速发展,具有色散补偿、滤波、信号放大增益平坦以及传感等多功能的光纤光栅将是未来全光网络中不可缺少的核心部件。紫外光致折射率变化的强光敏玻璃可为光纤光栅提供满足光通讯发展要求的纤芯材料,提高光刻写过程中的效率。通过分析国内外对紫外光致折射率变化的光敏玻璃的研究成果,从光敏性机理与光敏玻璃材料两个方面概述了光敏玻璃的研究进展,并对当前光敏玻璃研究中存在的问题进行了讨论。

In the rapidly growing fields of fiber telecommunication and fiber sensor, fiber grating which can act as dispersion compensators, wavelength filters, gain flattening equalizers and sensors will become the key optical components in the future all-optical network. Therefore, the photosensitive glass that can easily change its refractive index by exposure to ultraviolet light is of a great benefit to fiber gratings as the intracore host materials. Moreover, the strong photosensitivity can promote the efficiency of inscription. Based on the investigations of a large number of researchers on the photosensitive glasses , it out-lines the development both on the mechanism of photosensitivity and on the photosensitive materials. Finally, the problems ex-isting in the current researches are proposed and discussed.