Raman-based distributed temperature sensor using a 1.66μm ring type Q-switched fiber laser with adjustable pulsewidth

摘要：

An optimized 1.66μm Q-switched fiber laser is demonstrated for Raman-based distributed temperature sensor. In a ring type Q-switched erbium-doped fiber laser, 850m TrueWaveTM fiber is introduced to serve as both delay line fiber and Raman gain medium so that in addition to the wavelength shifted to 1.6μm, the pulse duration and the buildup time can be relatively extended. By properly controlling the fall edge of the acousto-optic switch, the pulse duration of 30-74ns with peak power of 1.3-3.3W is achieved. Based on this light source, a 2.4km Raman-based distributed temperature sensor is obtained with temperature resolution of 1oC and spatial resolution of 8m.

关键词： Distributed temperature sensor optical time domain reflectometry Raman backscattering Q-switched laser

作者: Lei Zhang Xue Feng Qiang Zhou Xiaoming Liu

作者单位: Room 11-414,East Main Building,Department of Electronic Engineering,Tsinghua UniversityBeijing,10008 Room 11-414,East Main Building,Department of Electronic Engineering,Tsinghua University Beijing,1000

会议类型: 国际会议

会议名称: 2008亚太光通信会议(Asia-Pacific Optical Communications 2008)

会议地点: 杭州

会议语种:英文

在线出版日期: 2008-10-26（万方平台首次上网日期，不代表论文的发表时间）