文档介绍：摘要
本论文以智能电网中对于电缆、变压器绕阻等大电流发热器件的温度、应力测
量监控为背景,主要论述了光纤光栅温度传感器、布里渊光时域反射仪温度、应力
分布式传感器、布里渊光时域分析仪温度、应力分布式传感器这三种光纤传感系统。
论文每一章节均详细介绍了该传感器的应用范围、工作原理以及优缺点,并提出了
相应的发明专利或实用新型系统设计,对现有系统进行了改进以获得更简单的结构,
更好的性价比或者更优异的性能指标。并通过实验验证其可行性。
为了获得更好的空间分辨率和温度、应力分辨率,论文设计了一种新型的基于
布里渊光时域分析仪的光纤传感系统。并且鉴于该系统对光源的特殊要求,设计了
一种基于微环外腔的窄线宽分布式反馈半导体激光器,采用弱耦合和控制损耗的方
法使激光器输出光的线宽<100kHz,并通过仿真实验进行验证所设计的结构可以达
到大约 88kHz 的窄线宽输出。此外,为了使该光源系统具有可调谐波长范围广、能
够同时实现大范围波长间的粗调和在确定波长左右精调的特性,论文进一步设计了
一种两微环阵列外腔结构,利用微环阵列的“游标效应”实现大约 88kHz 线宽, 62nm
左右的扫描范围以及粗调精调两种波长扫描模式。论文最后提出了一种基于微环的
光源器件单片集成设计,采用 InP 作为衬底材料,集成了两个窄线宽 DFB 激光器和
光延时线,可以作为缩减商用化 BOTDA 系统成本的一个方案。

关键词: 智能电网光纤传感器分布式布拉格光栅布里渊光时域反射仪
布里渊光时域分析仪微环

I
ABSTRACT
Based on the temperature and strain measurement of the cable and transformer
winding in Smart Grid, this thesis discuses Fiber Bragg Grating temperature sensor
system, distributed Brillouin Optical Time Domain Reflectometer temperature and strain
sensor system and distributed Brillouin Optical Time Domain Analysis temperature and
strain sensor system. Each chapter introduces the applications, principles and the
advantages and disadvantages of each system at the same time proposes a novel patent or
utility model design of an improved structure to get a position, higher
cost-effective or better performance. Besides, this thesis obtains the confirmation of the
feasibility of optical fiber sensor system used in Smart Grid by experiments.
In order to get better spatial, temperature and strain resolution, this thesis presents a
novel temperature and strain sensor system based on distributed Brillouin Optical Time
Domain Analysis. Furthermore, because of the special requirements of the light source in
such system, this thesis presents and simulates a novel narrow linewidth DFB laser based
on micro-ring external cavity, using weak coupling and low loss to obtain an output
linewidth about 88 kHz. In order to realize a wider wavelength scanning range and a
possibility