Distributed fiber optical sensors using Brillouin backscattering

Dieter Garus; Katerina Krebber; Ralf Hereth

doi:10.1117/12.221698

25 September 1995 Distributed fiber optical sensors using Brillouin backscattering

Dieter Garus, Katerina Krebber, Ralf Hereth

Proceedings Volume 2510, Fiber Optic and Laser Sensors XIII; (1995) https://doi.org/10.1117/12.221698
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany

Abstract

Experimental and theoretical investigations demonstrate the possible performance of a distributed temperature sensor based on Brillouin optical time domain analysis. The Brillouin frequency, its thermal coefficient and the gain bandwidth were measured for several standard telecommunication fibers at 1.3 micrometers . Theoretical investigations show that especially for sensor fibers with lengths of several ten kilometers the powers of the pump and the stokes laser in a pump-probe configuration are very critical parmaters. The optimum power level and the resulting sensor performance are calculated for different fiber lengths. A possible sensor configuration is presented.

Citation Download Citation

Dieter Garus, Katerina Krebber, and Ralf Hereth "Distributed fiber optical sensors using Brillouin backscattering", Proc. SPIE 2510, Fiber Optic and Laser Sensors XIII, (25 September 1995); https://doi.org/10.1117/12.221698

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