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Proceedings Paper

The bending sensitivity of long-period fiber gratings written by CO2 laser under external tension
Author(s): Dan Yang; Yunqi Liu; Wentao Tu; Tingyun Wang
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Paper Abstract

We studied experimentally the bending sensitivity of long-period fiber gratings (LPFGs) written in the single-mode fiber under external tension by CO2 laser. It is found that the LPFG was not only more sensitive to the fiber bending, but also sensitive to the bending direction, which can be attributed to the asymmetric index modification induced across the fiber section by the CO2 laser. Thanks to their unique bending characteristics, this kind of LPFGs could find applications in directional fiber bending sensors.

Paper Details

Date Published: 19 January 2011
PDF: 6 pages
Proc. SPIE 7986, Passive Components and Fiber-Based Devices VII, 798616 (19 January 2011); doi: 10.1117/12.888653
Show Author Affiliations
Dan Yang, Shanghai Univ. (China)
Yunqi Liu, Shanghai Univ. (China)
Wentao Tu, Shanghai Univ. (China)
Tingyun Wang, Shanghai Univ. (China)


Published in SPIE Proceedings Vol. 7986:
Passive Components and Fiber-Based Devices VII
Perry P. Shum, Editor(s)

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