Features of coherent Rayleigh noise and its significance in Brillouin intensity based temperature sensing

K. De Souza

doi:10.1117/12.624245

23 May 2005 Features of coherent Rayleigh noise and its significance in Brillouin intensity based temperature sensing

K. De Souza

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.624245
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

The temperature resolution of a fiber-optic distributed temperature sensor based on taking the ratio of the temperature sensitive backscattered spontaneous Brillouin signal to the corresponding Rayleigh signal depends on the optical signal-to-noise of the receiver system and the amplitude fluctuations on the Rayleigh signal. The amplitude fluctuations or coherent Rayleigh noise were investigated experimentally as a function of detection bandwidth, source bandwidth and spatial resolution and showed good agreement with theory.

Citation Download Citation

K. De Souza "Features of coherent Rayleigh noise and its significance in Brillouin intensity based temperature sensing", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.624245

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