Improvement on peak-to-trough ratio of sampled fiber Bragg gratings with multiple phase shifts

被引：0
|
作者：
谢滨
潘炜
罗斌
邹喜华
机构：
[1] School of Information Science and Technology.Southwest Jiaotong University
[2] School of Information Science and Technology.Southwest Jiaotong University Chengdu 610031
来源：
Chinese Optics Letters | 2008年 / 01期
基金：
中国国家自然科学基金;
关键词：
Improvement on peak-to-trough ratio of sampled fiber Bragg gratings with multiple phase shifts; IPS;
D O I：
暂无
中图分类号：
O436 [物理光学（波动光学）];
学科分类号：
070207 ; 0803 ;
摘要：
Via a cascaded structure,the peak-to-trough ratio is considerably improved for sampled fiber Bragg gratings(SFBGs)based on multiple-phase-shift(MPS)technique.This cascaded filter is composed of two identical SFBGs which are inserted with the increasing or decreasing arrangement of phase shifts. With this inverse arrangement of MPS in grating design,the phase fluctuation of individual SFBG can be compensated,and as a result an excellent phase matching condition is realized.In this way.the peak-to- trough ratio in reflection spectra is improved from 6 to 12 dB when multiplication factor m=4.and from 5 dB to 10 dB when m=8.
引用
收藏
页码：9 / 11
页数：3
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