中心凹陷W型光纤截止特性的研究  

Study of the cutoff characteristics of W-type fibers with a central index dip

作　　者：宋鹏[1,2] 季敏宁[1,2] 余燕[1,2] 

机构地区：[1]上海大学电子物理研究所,上海市201800 [2]特种光纤与光接入网省部共建重点实验室,上海大学,200072

出　　处：《激光杂志》2010年第6期37-39,共3页Laser Journal

基　　金：上海市教委创新基金项目,“TE模作为基模传输的微结构光子晶体光纤研究”(09YZ31);国家自然科学基金项目,(60777031);上海市重点学科和科委重点实验室项目(S30108,08DZ2231100)

摘　　要：对中心凹陷W型光纤严格按照矢量法,利用光场的电磁边界连续条件建立解析模型得到特征方程,通过数值计算分析了凹陷深度和宽度对中心凹陷W型光纤的基膜HE11和高次模TE01截止波长、单模工作区间和基膜能量损耗的影响,并与相同结构参数的W型光纤进行了比较。In this paper,W-type fibers with a central index dip are studied.Based on strict vector methods,an analytical model is built by continuity conditions of electromagnetic field and the characteristic equation is obtained.According to numerical calculation,effects of central index dip on the cutoff wavelength,operating range of single mode and energy loss of the fundamental mode are studied.The related result is compared to the standard W-type fiber which has the same parameters.

关 键 词：中心凹陷W型光纤 截止波长 能量损耗 

分 类 号：TN228.1[电子电信—物理电子学]