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Proceedings Paper

Theoretical and experimental study on crosstalk caused by multiple reflections in identical weak fiber Bragg grating array
Author(s): Haihu Yu; Cheng Luo; Huiyong Guo; Xiaofu Li; Yu Zheng; Desheng Jiang
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Paper Abstract

Large scale distributed sensor networks based on fiber Bragg gratings (FBGs) can find a wide range of uses. However, when identical FBGs are connected in series, the crosstalk will occur because of multiple reflections among the FBGs. In this article, theoretical simulations were done on the crosstalk in an array with FBG peak reflectivity of -35dB. An array consisting of identical weak FBGs with peak reflectivities ranging from -33dB to -37dB and a spatial resolution of 2.5m was prepared in-line on a fiber draw tower. The testing results of the FBG array are in close agreement with the theoretical simulations and ghost gratings can be observed on the reflection spectrum of the FBG array.

Paper Details

Date Published: 1 July 2015
PDF: 4 pages
Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 965530 (1 July 2015); doi: 10.1117/12.2184247
Show Author Affiliations
Haihu Yu, Wuhan Univ. of Technology (China)
Cheng Luo, Wuhan Univ. of Technology (China)
Huiyong Guo, Wuhan Univ. of Technology (China)
Xiaofu Li, Wuhan Univ. of Technology (China)
Yu Zheng, Wuhan Univ. of Technology (China)
Desheng Jiang, Wuhan Univ. of Technology (China)

Published in SPIE Proceedings Vol. 9655:
Fifth Asia-Pacific Optical Sensors Conference
Byoungho Lee; Sang-Bae Lee; Yunjiang Rao, Editor(s)

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