Theoretical study of all optical XOR using Mach-Zehnder interferometer

PAN Wei; ZOU Long-fang; LUO Bin; ZOU Xi-hua

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Theoretical study of all optical XOR using Mach-Zehnder interferometer

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- Theoretical study of all optical XOR using Mach-Zehnder interferometer
- Optics and Precision Engineering Vol. 13, Issue 3, Pages: 339-347(2005)
- 作者机构：
  
  1. 电子科技大学宽带光纤传输与通信系统技术重点实验室,四川成都,610054
  2. 西南交通大学计算机与通信工程学院光通信与光器件研究所,四川成都 610031
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH744.3
- Received：22 March 2005，
  
  Revised：18 April 2005，
  
  Published Online：30 June 2005，
  
  Published：30 June 2005
- 稿件说明：
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PAN Wei, ZOU Long-fang, LUO Bin, et al. Theoretical study of all optical XOR using Mach-Zehnder interferometer[J]. Optics and precision engineering, 2005, 13(3): 339-347.
DOI：

PAN Wei, ZOU Long-fang, LUO Bin, et al. Theoretical study of all optical XOR using Mach-Zehnder interferometer[J]. Optics and precision engineering, 2005, 13(3): 339-347. DOI：

摘要

基于半导体光放大器(SOA)和线性光放大器(LOA)构成的马赫-曾德尔干涉仪(MZI)

从速率方程出发

模拟了LOA的泵浦放大和增益箝制特性

建立了SOA-MZI和LOA-MZI结构全光异或门数值模型

通过控制探测光功率和偏置电流

实现了两路40 Gbit/s 信号的异或运算。并通过求解速率方程

对异或运算的结果进行了分析和比较;从器件结构上对2种异或门运算结果的差异给出了解释。结果表明:SOA和LOA中载流子恢复时间限制了信号处理速度;合理控制偏置电流和探测光功率可以提高信号处理能力;LOA具有增益箝制作用

对输入信号的扰动具有不敏感性;与SOA-MZI异或门相比

LOA-MZI异或门输出信号的消光比较高

功率较低;对于输出脉冲波形而言

LOA-MZI异或门性能优于SOA-MZI异或门。

Abstract

Two kinds of Mach-Zehnder interferometers (MZI) were constructed by semiconductor optical amplifier (SOA) and linear optical amplifier (LOA)

respectively. Based on rate equations

the pumping amplification and gain clamped behaviors of LOA are simulated. With the control of probe beam power and bias current

all-optical XOR functionality is simulated using integrated SOA-MZI and LOA-MZI numerical model at 40 Gbit/s. The performance of the XOR results is analyzed and compared by solving the rate equations numerically. The result differences of the XOR gates are explained from the structural properties. The theoretical results indicate that the high-speed operation is limited by the carrier recovery time in the SOA and LOA; the operation rate can be enhanced with appropriate bias current and probe beam power; LOA clamps the gain and improves tolerance against small signal distortion; the output signals of LOA-MZI have higher extinction ratio and lower power compared with SOA-MZI; LOA-MZI has better performance in output pulse shape than SOA-MZI.

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references

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