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Proceedings Paper

SFDM/CWDM of fiber-optic Fizeau strain sensors
Author(s): Y. J. Rao; C. X. Zhou; T. Zhu
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Paper Abstract

In this paper, a novel method for multiplexing a large number of fiber-optic Fizeau sensors using coarse wavelength division multiplexing (CWDM) and spatial-frequency division multiplexing (SFDM) is proposed and demonstrated. A CWDM device is used to multiplex signals from different sensor channels occupying different wavelength regions divided by the CWDM. More than 10 Fizeau sensors arranged in a single channel can be multiplexed by using SFDM due to the long cavity length of the Fizeau sensor. The experimental results show that a strain accuracy of ±5με is achieved. As up to 100 sensors can be multiplexed simultaneously, this approach can improve the multiplexing capacity of Fizeau strain sensors significantly.

Paper Details

Date Published: 20 January 2006
PDF: 6 pages
Proc. SPIE 6027, ICO20: Optical Information Processing, 602747 (20 January 2006);
Show Author Affiliations
Y. J. Rao, Univ. of Electronic Science and Technology of China (China)
Chongqing Univ. (China)
C. X. Zhou, Chongqing Univ. (China)
T. Zhu, Chongqing Univ. (China)
Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 6027:
ICO20: Optical Information Processing
Yunlong Sheng; Songlin Zhuang; Yimo Zhang, Editor(s)

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