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Proceedings Paper

Study of cross-talk of parallel Fabry-Perot sensors in the coherence multiplexing
Author(s): Yu-Lung Lo
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Paper Abstract

Cross-talks in parallel Fabry-Perot sensors for demodulation in a path-matching differential interferometry (PMDI) can be limited by corresponding path-matching read-out systems. However, improper design in cavity lengths of Fabry-Perots can cause a serious cross-talk. In this paper, using a spectrum analysis to design the parallel Fabry-Perot sensors without cross-talk is presented. It is concluded that the length difference in each two Fabry-Perot cavities needs to be longer than the coherence length in a broadband light source. Experimental data shows that the cross-talk between two parallel Fabry-Perot sensors in PMDI is in a good agreement with the analytical predication.

Paper Details

Date Published: 1 September 1999
PDF: 4 pages
Proc. SPIE 3746, 13th International Conference on Optical Fiber Sensors, 374616 (1 September 1999); doi: 10.1117/12.2302032
Show Author Affiliations
Yu-Lung Lo, National Cheng Kung Univ. (Taiwan)

Published in SPIE Proceedings Vol. 3746:
13th International Conference on Optical Fiber Sensors
Byoung Yoon Kim; Kazuo Hotate, Editor(s)

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