N元DFB激光器传感阵列解调信号偏振衰落分析  

Analysis of Polarization Fading for Demodulated Signal of N-element DFB Laser Sensor Array

作　　者：李东 曾文锋 黄卫东 李申鹏 

机构地区：[1]武汉军械士官学院,湖北武汉430075

出　　处：《激光与红外》2008年第1期63-66,共4页Laser & Infrared

基　　金：国防科技重点实验室基金项目(51448040204JB1101)资助

摘　　要：研究了非平衡光纤Mach-Zehnder干涉仪解调N元DFB阵列传感信号时的偏振衰落问题。运用邦加球和光纤中偏振光传输理论,利用模型的等效简化,通过详细的理论分析,得到优化控制下阵列传感信号最低可见度的下限表达式,并通过计算机仿真,验证了结果的正确性,详细分析了仿真实验的结果。The signal polarization fading of N-element DFB laser sensor array demodulated by unbalance fiber Mach- Zehnder interferometer is investigated in this paper. With the Poincare sphere and the optical wave-guide theory, the theoretical model is simplified. Through the theoretical analysis, the expression of visibility lower limit for the minimum visibility of N-element sensor array under optimum control is got. The result of the cyber-simulation experiment testify the expression. At last,the result of cyber-simulation experiment is analyzed.

关 键 词：DFB激光器 光纤Mach-Zehnder干涉仪 偏振光 邦加球 

分 类 号：TN763[电子电信—电路与系统]