负折射率介质光子晶体光纤带隙结构的研究  

Study on Band Gap Structures of Photonic Crystal Fiber Containing Negative Refraction Materials

作　　者：陈鹤鸣[1] 王文轩[1] 

机构地区：[1]南京邮电大学光电工程学院光通信研究所,江苏南京210003

出　　处：《南京邮电大学学报（自然科学版）》2007年第6期19-23,共5页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

基　　金：江苏省高技术计划(BG2005039)资助项目

摘　　要：提出了一种新型结构的负折射率介质光子晶体光纤,采用平面波法(PWM)分析了这种光子晶体光纤的带隙结构,研究了负折射率变化与负正折射率介质比变化对光子带隙结构的影响。分析结果表明,负折射率介质的光子晶体光纤的带隙数量和宽度随折射率和介质比变化而变化。取负折射率值为-1.5、负正介质填充比为0.88、空气孔间距为2.6 um时,可得到多条带隙和较大的带隙宽度,实现PBG导光的波长范围为1 225 nm—4 084 nm。A new type of photonic crystal fiber （PCF） containing negative refractive index materials （NIM） has been designed. The band gap property of NIM-PCF has been investigated with plane wave method. The negative refractive index and the ratio of NIM affecting the band gap are analyzed. The results prove that the amount and width of band gap in NIM-PCF were changed with them. When the negative refractive index is - 1.5, the ratio of NIM is 0.88 and the medium-pole pitch is 2.6um ,while the guided wavelength is from 1225nm to 4084nm.

关 键 词：光纤光学 光通信 负折射介质光子晶体光纤 

分 类 号：TN929.11[电子电信—通信与信息系统] O431.1[电子电信—信息与通信工程]