基于多模光纤的光时域滤波器及其在全光载波恢复中的应用

高洪培; 谭中伟; 付超

doi:10.3788/fgxb20194009.1192

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基于多模光纤的光时域滤波器及其在全光载波恢复中的应用

发光学应用及交叉前沿 | 更新时间：2020-08-12

- 基于多模光纤的光时域滤波器及其在全光载波恢复中的应用
- Optical Time Domain Filter Based on Multimode Optical Fiber and Its Application in All Optical Carrier Recovery
- 发光学报 2019年40卷第9期页码：1192-1199
- 作者机构：
  
  北京交通大学光波技术研究所, 全光网络与现代通信网教育部重点实验室, 北京 100044
- 作者简介：
- 基金信息：
  
  国家自然科学基金（61875008）资助项目
- DOI：10.3788/fgxb20194009.1192
  中图分类号： O436
- 收稿日期：2018-12-18，
  
  修回日期：2019-03-11，
  
  网络出版日期：2019-03-12，
  
  纸质出版日期：2019-09-05
- 稿件说明：
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高洪培, 谭中伟, 付超. 基于多模光纤的光时域滤波器及其在全光载波恢复中的应用[J]. 发光学报, 2019,40(9): 1192-1199

GAO Hong-pei, TAN Zhong-wei, FU Chao. Optical Time Domain Filter Based on Multimode Optical Fiber and Its Application in All Optical Carrier Recovery[J]. Chinese Journal of Luminescence, 2019,40(9): 1192-1199
高洪培, 谭中伟, 付超. 基于多模光纤的光时域滤波器及其在全光载波恢复中的应用[J]. 发光学报, 2019,40(9): 1192-1199 DOI： 10.3788/fgxb20194009.1192.

GAO Hong-pei, TAN Zhong-wei, FU Chao. Optical Time Domain Filter Based on Multimode Optical Fiber and Its Application in All Optical Carrier Recovery[J]. Chinese Journal of Luminescence, 2019,40(9): 1192-1199 DOI： 10.3788/fgxb20194009.1192.

摘要

常见的光滤波器主要对波长进行选择，当滤波器带宽变窄时，对光波长的漂移就会变得敏感，限制了其使用范围。本文提出的光滤波器是基于由透镜和多模光纤组成的全光积分器。我们依据其时域特性对该滤波器的频域滤波特性进行了分析。该时域滤波器可以用于光载波恢复，通过数值仿真验证得出该技术使相位调制信号两边带间和载波间的强度关系发生改变，在不使用本振激光器的情况下完成光信号相位调制到强度调制的转换。

Abstract

The common optical filters at this stage mainly filter optical signals with specific wavelengths. When the bandwidth of the optical filter is narrow

it is very sensitive to the wavelength drift

which limits their application. The optical filter proposed in this article is based on an all-optical integrator composed of lens and multimode fiber(MMF). Based on its time domain characteristics

we analyze its frequency domain characteristics. This filter is used for optical carrier recovery to demonstrate its application. We verified the method by numerical simulation. The technology changes the intensity relationship between the two sides of the phase modulation signal and the carrier

it performs intensity modulation instead of phase modulation and the system didn't use the local oscillator laser during the modulation process.

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references

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