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Proceedings Paper

Fabrication and sensing characteristics of helical long-period fiber gratings written in the rotated fiber by CO2 laser
Author(s): Liang Zhang; Yunqi Liu; Hongliang Song; Tingyun Wang
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Paper Abstract

A helical long-period grating (HLPG) was fabricated by twisting a conventional single-mode fiber when CO2 laser beam was sweeping along the fiber axis. A grating with a contrast of 20 dB can be written in the fiber with a length of 1 cm. The spectral and sensing characteristics were investigated experimentally. The maximum sensitivity to surrounding refractive index and temperature measurement was measured to be 995 nm/RIU and 53 pm/°C, respectively.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96346Y (28 September 2015); doi: 10.1117/12.2194627
Show Author Affiliations
Liang Zhang, Shanghai Univ. (China)
Nanjing Xiaozhuang Univ. (China)
Yunqi Liu, Shanghai Univ. (China)
Hongliang Song, Shanghai Univ. (China)
Tingyun Wang, Shanghai Univ. (China)

Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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