光纤光栅理论基础与传感技术-求解三层光纤包层模本征方程(共7页).doc

精选优质文档-倾情为你奉上%-% 求解三层光纤包层模本征方程,画曲线f(U1),% eclthp:eigenvalue of cladding modes of three layer fiber ,ploting f % 光纤光栅理论基础与传感技术 % zhzijia %- clear all,clcformat longglobal lambda n1 n2 n3 ra1 ra2 %更改方便,引入全局量n1 = 1.4681;n2 = 1.4628;n3 = 1;ns1 = n1*n1;ns2 = n2*n2;ns3 = n2*n3; ra1 = 4.15e-6;ra2 = 62.5e-6; la