Combined Raman and Brillouin scattering sensor for simultaneous high-resolution measurement of temperature and strain

Kellie A. Brown; Anthony W. Brown; Bruce G. Colpitts

doi:10.1117/12.657643

30 March 2006 Combined Raman and Brillouin scattering sensor for simultaneous high-resolution measurement of temperature and strain

Kellie A. Brown, Anthony W. Brown, Bruce G. Colpitts

Author Affiliations +

Proceedings Volume 6167, Smart Structures and Materials 2006: Smart Sensor Monitoring Systems and Applications; 616716 (2006) https://doi.org/10.1117/12.657643
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2006, San Diego, California, United States

Abstract

Recently, strain and temperature measurement results using the first ever spontaneous Brillouin and Raman scattering based fiber optic sensor have been reported (Alahbabi et al., 2004)¹. This contribution reports the performance results of a combined Brillouin and Raman sensor used to measure strain and temperature simultaneously. We report on a sensor based on the combination of a BOTDA loss-based Brillouin sensor and a spontaneous Raman scattering based sensor, which has not been previously reported to date. We have implemented the combined sensor system for operation over useful sensing lengths and show significantly improved temperature and strain accuracy along with superior spatial resolution. This combined sensor system is shown to be capable of separating temperature and strain effects which previously limited Brillouin systems in some applications.

Citation Download Citation

Kellie A. Brown, Anthony W. Brown, and Bruce G. Colpitts "Combined Raman and Brillouin scattering sensor for simultaneous high-resolution measurement of temperature and strain", Proc. SPIE 6167, Smart Structures and Materials 2006: Smart Sensor Monitoring Systems and Applications, 616716 (30 March 2006); https://doi.org/10.1117/12.657643

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