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Proceedings Paper

Development and characterization of fiber optic hydrophone coils for the detection of ultrasonic signals within power transformers
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Paper Abstract

In this work we present the development and characterization of highly-sensitive fibre optic coils hydrophone for the detection of ultrasonic signals. In particular, fibre coils are a good improvement, in front of electronic sensors, for the application proposed in this work, the detection of ultrasonic signals within power transformers. Several fibre optic coils are tested in a laboratory controlled environment within a suitable ultrasonic frequency range, typically associated to ultrasonic emission in power transformers. We develop and characterize several fibre optic hydrophone coils using a Mach-Zehnder interferometer. A detailed study is carried out on the ideal shape of the hydrophone fibre probe, for parameters such as sensitivity and frequency range. Also, a comparative analysis has been carried out on the sensitivity of commercial PZT to the sensitivity of the fibre optic system under the same test conditions.

Paper Details

Date Published: 22 April 2006
PDF: 8 pages
Proc. SPIE 6189, Optical Sensing II, 618914 (22 April 2006); doi: 10.1117/12.663761
Show Author Affiliations
Carlos Macià-Sanahuja, Univ. Carlos III de Madrid (Spain)
Horacio Lamela, Univ. Carlos III de Madrid (Spain)

Published in SPIE Proceedings Vol. 6189:
Optical Sensing II
Brian Culshaw; Anna G. Mignani; Hartmut Bartelt; Leszek R. Jaroszewicz, Editor(s)

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