Study on the Suppression of Power Fading for IM-DD CAP-16QAM Transmission System

LI Lan; ZHANG Zheng-ping

doi:10.13756/j.gtxyj.2017.03.003

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Study on the Suppression of Power Fading for IM-DD CAP-16QAM Transmission System

- Study on the Suppression of Power Fading for IM-DD CAP-16QAM Transmission System
- Study on Optical communication Issue 3, Pages: 9-11(2017)
- 作者机构：
  
  贵州大学大数据与信息工程学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2017.03.003
  CLC： TN929.1
- Published：2017，
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[1]李澜,张正平.强度调制直接检测CAP-16QAM系统功率衰落抑制[J].光通信研究,2017(03):9-11+74.

LI Lan, ZHANG Zheng-ping. Study on the Suppression of Power Fading for IM-DD CAP-16QAM Transmission System. [J]. (3):9-11(2017)
[1]李澜,张正平.强度调制直接检测CAP-16QAM系统功率衰落抑制[J].光通信研究,2017(03):9-11+74. DOI： 10.13756/j.gtxyj.2017.03.003.

LI Lan, ZHANG Zheng-ping. Study on the Suppression of Power Fading for IM-DD CAP-16QAM Transmission System. [J]. (3):9-11(2017) DOI： 10.13756/j.gtxyj.2017.03.003.

摘要

在基于无载波幅度相位调制-正交幅度调制的强度调制直接检测的短距离光通信系统中

色散和强度调制器啁啾共同导致功率衰落

造成系统容量受限。针对这一问题

采用光纤布拉格光栅实现光残留边带的光域滤波均衡以抑制功率衰落。仿真结果表明

40Gbit/s无载波幅度相位调制-正交幅度调制信号经60km标准单模光纤传输时

采用该方案后

系统的3dB带宽得到了提升

有效抑制了系统功率衰落的影响。

Abstract

In Intensity Modulation Direct Detection（IM/DD）optical transmission system with Carrierless Amplitude and Phase modulation Quadrature Amplitude Modulation（CAP-16QAM）

the system capacity is limited due to the power fading effect caused by the dispersion and chirp of intensity modulator.In this paper

we use optical domain equalization scheme based on optical Fiber Bragg Grating（FBG）to realize the optical Vestigial Sideband（VSB）filtering.The simulation results show that the 40Gbit/s CAP-16 QAM system performance after 60 km transmission have been improved by using the proposed equalization scheme

which mitigate the power fading effect efficiently.

关键词

光通信系统短距离无载波幅度相位调制均衡方法

Keywords

optical communication systemshort distancecarrierless amplitude phase modulationequalization scheme

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