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

Lei Zhang; Xue Feng; Qiang Zhou; Xiaoming Liu

doi:10.1117/12.803198

11 November 2008 Raman-based distributed temperature sensor using a 1.66μm ring type Q-switched fiber laser with adjustable pulsewidth

Lei Zhang, Xue Feng, Qiang Zhou, Xiaoming Liu

Author Affiliations +

Proceedings Volume 7134, Passive Components and Fiber-based Devices V; 713429 (2008) https://doi.org/10.1117/12.803198
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

Abstract

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 TrueWave 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 1°C and spatial resolution of 8m.

Citation Download Citation

Lei Zhang, Xue Feng, Qiang Zhou, and Xiaoming Liu "Raman-based distributed temperature sensor using a 1.66μm ring type Q-switched fiber laser with adjustable pulsewidth", Proc. SPIE 7134, Passive Components and Fiber-based Devices V, 713429 (11 November 2008); https://doi.org/10.1117/12.803198

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