J4 ›› 2010, Vol. 27 ›› Issue (4): 491-495.

• 光通信 • 上一篇    下一篇

一种基于采样布拉格光栅的梳状滤波器解决方案

沈鹏, 涂兴华, 徐宁   

  1. 南京邮电大学光电工程学院, 江苏 南京 210003
  • 收稿日期:2009-08-12 修回日期:2009-10-26 出版日期:2010-07-28 发布日期:2010-06-13
  • 通讯作者: 徐宁(1960-),女,副教授,主要从事光学、光纤通信和光电子器件的方面教学、科研工作。 E-mail:xuning@njupt.edu.cn
  • 作者简介:沈鹏(1984-),男,南京邮电大学光电工程学院硕士研究生,从事光纤通信与光波技术研究 E-mail: y071610@njupt.edu.cn
  • 基金资助:

    南京邮电大学校科研基金资助(NY207026),省教育厅面项项目,基于微流控技术阵列光开关的有限元分析(TZ208014)

A novel solution with comb filter based on sampled-Bragg-grating

SHEN Peng, TU Xing-hua, XU Ning    

  1. College of Opto-electronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • Received:2009-08-12 Revised:2009-10-26 Published:2010-07-28 Online:2010-06-13

摘要:

基于采样布拉格光纤光栅,设计出一种多通道数梳状滤波器,所设计的梳状滤波器可应用于光纤通信中的波分复用(WDM)系统。在光栅中引入一种非连续线性啁啾阶梯式结构,并且在采样内,使折射率调制深度符合汉明分布,设计出一个具有26个通道、通道间隔25GHz的梳状滤波器,它能够产生具有平顶、陡峭边沿以及高透射率的多个相同的通带,可用作多通道光分插复用器,广泛应用于WDM系统。

关键词: 光通信, 梳状滤波器, 阶梯式啁啾, 采样布拉格光栅, 汉明切趾

Abstract:

Based on a sampled Brag grating, a novel approach to obtain high channel-count comb filter is designed for wavelength-division-multiplexing(WDM) system. There is a non-continuous linear chirped structure like a ladder in grating. And refractive index modulation amplitude agrees with Hamming distribution. A 26-channel comb filter with channel spacing of 25GHz is fabricated. It is able to obtain multiple equalized passbands with flat-top steep-edge and high transmittance,which will be used as optical add/drop multiplexer in WDM system.

Key words: optical communication, comb filter, ladder chirp, sampled-Brag-grating, Hamming apodize