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Proceedings Paper

Application of homodyne demodulation system in fiber optic sensors using phase generated carrier based on LabVIEW in pipeline leakage detection
Author(s): Cunfu He; Lijun Hang; Bin Wu
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Paper Abstract

Phase generated carrier (PGC) homodyne demodulation technique is frequently used in optical fiber interferometric sensors for demodulating sensing signals. However, it is difficult for the system to achieve optimum performance because the electronic components which constitute the analog circuit of a PGC homodyne demodulation system have some problems such as overload, improper resistance, etc. all those will bring noise to the system. Therefore, the system could not be allowed to work well for those noises introduced by electronic components. For overcoming these disadvantages of the analog circuit mentioned above, a digital PGC demodulation system based on LabVIEW is described in this paper, and it is applied to demodulate the sensing signals from all fiber oil pipeline leakage detection system based on Sagnac interferometer. The results verify that this system can well demodulate sensing signals.

Paper Details

Date Published: 19 May 2006
PDF: 6 pages
Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 61502G (19 May 2006); doi: 10.1117/12.676892
Show Author Affiliations
Cunfu He, Beijing Univ. of Technology (China)
Lijun Hang, Beijing Univ. of Technology (China)
Bin Wu, Beijing Univ. of Technology (China)


Published in SPIE Proceedings Vol. 6150:
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Xun Hou; Jiahu Yuan; James C. Wyant; Hexin Wang; Sen Han, Editor(s)

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