空芯光纤中介质层材料色散的研究  

Study on Material Dispersion of Dielectric Layer in Hollow Fiber

作　　者：隋可融[1] 朱晓松[1] 汤晓黎[1] 石艺尉[1] 

机构地区：[1]复旦大学通信科学与工程系,上海200433

出　　处：《光学学报》2008年第11期2062-2066,共5页Acta Optica Sinica

基　　金：国家自然科学基金(60608013);浦江人才计划(07pj14012)资助课题

摘　　要：提出一种根据实验测量的损耗谱曲线,通过曲线拟合等方法获得空芯光纤中介质层薄膜材料色散性质的方法,并使用此方法得到了数种空芯光纤中常用的介质层材料在可见光与近红外区域的色散柯西公式。将得到的介质层材料色散引入到空芯光纤传输损耗谱的理论计算中之后,相对于不考虑材料色散或者使用文献中提供的色散数据进行计算的结果,理论计算结果能更好地符合实验测量结果,从而能够在理论上更加准确地预估空芯光纤在可见光与近红外区域的低损耗窗口的位置。所获得的材料色散柯西公式对于空芯光纤的高性能化设计有重要的辅助作用。A method is proposed to evaluate the material dispersion property of the dielectric film in the dielectric- coated hollow fiber from the measured loss spectra of the hollow fibers by curve fitting. Cauchy relations for several commonly-used materials are obtained in the visible and near-infrared regions. By taking into consideration of the material dispersion, the theoretically calculated loss spectra of hollow fiber agree better with the measured ones than the calculated results neglecting material dispersion or adopting dispersion data from other references, and the wavelengths of the low-loss window in the visible and near-infrared regions can be predicted more accurately. The derived Cauchy relations are important to the design of hollow fiber with high performance.

关 键 词：光纤光学 材料色散 曲线拟合 空芯光纤 

分 类 号：TN252[电子电信—物理电子学]