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Proceedings Paper

Influence of polarization controller on the measurement of the precision position of the leakage using optical fiber sensors
Author(s): Wentao Sun; Lijun Hang; Shuyang Hu; Bin Wu; Yanrong Song
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Paper Abstract

A measurement of the leakage position using a distributed optical fiber acoustic sensor system based on Sagnac interferometer was demonstrated here. The effect of the input polarization on the output power of the demodulated signal was researched theoretically and experimentally. The influence of the polarization of the signal and the reference on the measurement sensitivity was calculated. It is shown that a higher coherence between them could obtain a higher measurement sensitive result; uprightness between them could not obtain any leakage signal. There are theoretical analyses and experimental simulation in this paper. When the system is 10.044km-long, the least frequency measured was 20 kHz and the calculated leakage position was 5-km, which was close to the real leakage position 5.022km. The relative difference was 0.44%.

Paper Details

Date Published: 1 November 2007
PDF: 6 pages
Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64231Q (1 November 2007); doi: 10.1117/12.779657
Show Author Affiliations
Wentao Sun, Beijing Univ. of Technology (China)
Lijun Hang, Beijing Univ. of Technology (China)
Shuyang Hu, Beijing Univ. of Technology (China)
Bin Wu, Beijing Univ. of Technology (China)
Yanrong Song, Beijing Univ. of Technology (China)

Published in SPIE Proceedings Vol. 6423:
International Conference on Smart Materials and Nanotechnology in Engineering

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