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Proceedings Paper

Interferometer fiber optic sensor for dc signal measurement
Author(s): Yasuyuki Nakajima; Ryotaku Sato; T. Yoshikawa; Koji Dobashi
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Paper Abstract

We present a novel interferometer fiber optic sensor (IFOS) system for DC signal measurement based on the PGC (phase generated carrier) demodulation scheme. In addition to the principle of the demodulation, the compensation techniques for improving the measurement precision constrained by the laser nonlinearity in frequency modulation (FM) operation and the experimental results are described. And now, we've made a prototype water level sensor and been trying the field tests, so we show the first results compared with those of the float-typed reference sensor.

Paper Details

Date Published: 8 May 2001
PDF: 4 pages
Proc. SPIE 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001), (8 May 2001); doi: 10.1117/12.427001
Show Author Affiliations
Yasuyuki Nakajima, Oki Electric Industry Co., Ltd. (Japan)
Ryotaku Sato, Oki Electric Industry Co., Ltd. (Japan)
T. Yoshikawa, Oki Electric Industry Co., Ltd. (Japan)
Koji Dobashi, Oki Electric Industry Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 4416:
Optical Engineering for Sensing and Nanotechnology (ICOSN 2001)
Koichi Iwata, Editor(s)

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