Fiber optical distributed temperature and strain sensing system based on Brillouin light scattering

Yi Li; Xianliang Xue

doi:10.1117/12.907018

30 November 2011 Fiber optical distributed temperature and strain sensing system based on Brillouin light scattering

Yi Li, Xianliang Xue

Proceedings Volume 8201, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 820129 (2011) https://doi.org/10.1117/12.907018
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

Abstract

In this paper, a two locking lasers BOTDR (Brillouin optical time domain reflectometry) system is demonstrated. Two narrow linewidth DFB lasers are used as the light sources. Their frequencies are locked with a frequency difference of about 11 GHz, which can greatly improve the measurement accuracy and system stability. At a 5-km standard single-mode fiber, distributed temperature measurements can be achieved in lab with a spatial resolution of 10m and a temperature resolution of 2°C.

Citation Download Citation

Yi Li and Xianliang Xue "Fiber optical distributed temperature and strain sensing system based on Brillouin light scattering", Proc. SPIE 8201, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 820129 (30 November 2011); https://doi.org/10.1117/12.907018

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