八边形光子晶体光纤色散及非线性的研究  

Investigated of flat dispersion and high nonlinearity on a octagonal photonic crystal fiber

作　　者：葛文萍[1] 陈娟[1] 

机构地区：[1]新疆大学信息科学与工程学院,乌鲁木齐830046

出　　处：《光通信技术》2014年第9期52-55,共4页Optical Communication Technology

基　　金：新疆维吾尔自治区自然科学基金(20122012211A013)资助

摘　　要：设计了一种多包层正八边形结构光子晶体光纤，研究了空气孔直径、孔间距对色散及非线性的影响；通过优化结构参量，理论上实现了在1．47～1．6μm波长范围色散值在±0．2ps／（km·nnm）之间波动；在波长1．55μm处非线性系数值高达40．5（1／W·km）。获得了在1550nm附近具有平坦色散和高非线性双零色散光子晶体光纤，为研究非线性效应提供了一定的理论基础。A novel octagonal photonic crystal fiber （O-PCF） structure with two zero-dispersion is designed, The effect of hole size on nonlinearity and dispersion of the two zero-dispersion O-PCF is analyzed by the multi-pole method, by optimizing the geometrical parameter, the two zero-dispersion O-PCF with high nonlinearity and nearly zero ultra-flattened dispersion was obtained in theory. At the range of wavelength 1.47-1.6μ m ,the dispersion coefficient is merely changed within ± 0.5ps/（kmonm）, and the nonlinearity coefficient is 40.5 （1/W .kin） at 1.55μm, which provides theory basis for further research at different wavelengths of the nonlinear effect in the anomalous dispersion region.

关 键 词：光纤光学 光子晶体光纤 非线性 双零色散 多极法 

分 类 号：TN929.11[电子电信—通信与信息系统]