物理学报2012，Vol.61Issue(18)：199-205,7.
远程干涉型光纤传感系统的非线性相位噪声分析
Nonlinear phase noise analysis of long-haul interferometric fiber sensing system
摘要
Abstract
Nonlinear phase noise structure is studied in the background of long-haul interferometric fiber sensing system. The influence of each factor is analyzed and evaluated in detail, and suppression methods are discussed briefly. The results show that phase noise of the system mainly includes the phase noise converted from intensity noise, the phase noise caused by nonlinear effects induced laser linewidth variations as well as the phase noise introduced by self phase modulation and cross phase modulation. Stimulated Brillouin scattering and four-wave mixing can cause intensity noise and then it turns into phase noise. For the fiber sensing system which has a narrow detecting bandwidth, the corresponding noise induced by four-wave mixing can always be neglected. Stimulated Brillouin scattering, four-wave mixing and modulation instability can cause laser linewidth broadening, leading to the increase of phase noise. When the number of channels is large, the phase noise introduced by cross phase modulation cannot be ignored. The obtained results provide a good guidance for the practical applications of long-haul interferometric fiber sensing systems.关键词
相位噪声/非线性效应/光纤传感/强度噪声Key words
phase noise/nonlinear effect/fiber sensing/intensity noise分类
信息技术与安全科学引用本文复制引用
陈伟,孟洲,周会娟,罗洪..远程干涉型光纤传感系统的非线性相位噪声分析[J].物理学报,2012,61(18):199-205,7.基金项目
国家自然科学基金（批准号：61177073）、光电信息与传感技术广东普通高校重点实验室开放研究基金（批准号：gdol201101）、湖南省研究生创新基金（批准号：CX20118033）和国防科学技术大学研究生院创新基金（批准号：B110703）资助的课题. （）
