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改变光栅折射率实现双波长采样光栅的方法

ISSN号：0258-7025
期刊名称：中国激光
时间：2012
页码：85-90
分类：TN929.11[电子电信—通信与信息系统;电子电信—信息与通信工程]
作者机构：[1]解放军理工大学通信工程学院,江苏南京210007, [2]解放军理工大学第63研究所,江苏南京210007
相关基金：国家自然科学基金重点项目（61032005）资助课题
相关项目：支持多用户的高速光编解码器差拍噪声抑制方法研究

关键词：光纤光学, 光纤布拉格光栅, 直流折射率调制, 相移, 双峰, fiber optics, fiber Bragg grating, direct current refractive index modulation, phase shift, dual-wavelength

中文摘要：

提出了一种新的基于采样光纤布拉格光栅（FBG）的双峰（DW）滤波器实现方法。通过改变采样之间的直流折射率,在FBG中引入相移;利用占空比为1的余弦函数采样,抑制除±1级以外的所有波长通道。该设计制作方法具有波长设计灵活、制作精度要求低与成本低的优点。对均匀直流相移光栅、采样直流相移光栅与传统离散相移光栅进行了比较与实验制作,结果与理论相吻合。实现了波长间隔为0.08nm的DW滤波器,证明了该方法的可行性。

英文摘要：

A novel dual-wavelength（DW） sampled fiber Bragg grating（FBG） is proposed.Phase shift between two adjacent FBG units is achieved by increasing direct current（DC） refractive index of FBG.The FBG with only identical ±1 order reflective spectrum is optimized with cosine sampling function.This method has the advantages of flexible wavelength design,low fabrication precision and low cost.Comparison between uniform DC phase shift FBG,sample DC phase shift FBG and traditional discrete phase shift FBG is made.Uniform DC phase shift FBG and sample DC phase shift FBG are fabricated,which show a good agreement with theory.DW filter with channel spacing 0.08 nm is fabricated,and the experiment results verify the feasibility of this proposed method.

同期刊论文项目

支持多用户的高速光编解码器差拍噪声抑制方法研究

期刊论文 62 会议论文 14 著作 2

基于光学原理的射频任意波形产生器及其在光纤传输系统中的应用

期刊论文 78 会议论文 18

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