随机分布反馈光纤激光器偏振特性研究

项目名称： 随机分布反馈光纤激光器偏振特性研究

项目编号： No.61205048

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 信息四处

项目作者： 王子南

作者单位： 电子科技大学

项目金额： 28万元

中文摘要： 随机分布反馈光纤激光器是随机激光器研究领域2010年新形成的重要分支，它被认为在光纤通信与光纤传感等领域具有巨大的应用潜力。随机分布反馈光纤激光器在结构上的本质特点在于：它没有传统光纤激光器中用于构成光学谐振腔的反射镜。因此它具有制作工艺简单、对结构误差容忍度高等固有优点。学术界对该类激光器的工作特性、物理机理的研究刚刚开始。在申请人的前期研究工作中，发现了该激光器优异的温度稳定特性，并根据此特性研制了超长距离点式温度传感系统；此外，还将该激光器作为分布式放大泵浦源，研制了超长距离分布式传感系统。在本项目中，申请人将以研究该激光器的偏振相关特性为切入点，对其物理特性进行矢量分析。主要研究内容包括：(1)矢量仿真模型的建立；(2)偏振光泵浦条件下的激光器特性研究；(3)激光器的偏振稳定性研究。该研究工作将推动随机分布反馈光纤激光器完整物理模型的建立，并为其今后的广泛应用奠定坚实的理论基础。

中文关键词： 瑞利散射；拉曼放大；偏振效应；随机激光器；光纤激光器

英文摘要： Random distributed feedback fiber laser (RDFB-FL) has become an important topic of research on random lasers since 2010，and it was considered to have significant potential for fiber-optic communications and sensing,etc. The fundmental feature of RDFB-FL is that it doesn' have the reflective mirrors for forming a resonant cavtity, which all traditional fiber lasers have. Therefore, RDFB-FLs have some intrinsic advantages, such as simple manufacture, high tolerance to structural irregularites, etc. The academic commuity has just begun to the explore of its performance characteristics and its physcial mechnisms. During the preliminary work, the applicant found that the RDFB-FL has a superior temperature-insensitivity feature for the fist time, and demonstrated a long-distance fiber-optic temperature system based on the RDFB-FL; Moreover, the applicant demonstrated an ultra-long-distance distributed sensing system, using the RDFB-FL as a pump source for distributed amplification. In this project, the applicant will focus the research on the polarization properties of the RDFB-FL and establish a vectorial analysis model of the RDFB-FL. The major research tasks include: (1) to establish a vectorial simulation model;(2) to explore the properties of the RDFB-FL with polarized pump; (3) to explore the stability of the R

英文关键词： Rayleigh scattering；Raman amplification；polarizaiton effects；random laser；fiber laser