The bending sensitivity of long-period fiber gratings written by CO2 laser under external tension

Dan Yang; Yunqi Liu; Wentao Tu; Tingyun Wang

doi:10.1117/12.888653

19 January 2011 The bending sensitivity of long-period fiber gratings written by CO₂ laser under external tension

Dan Yang, Yunqi Liu, Wentao Tu, Tingyun Wang

Proceedings Volume 7986, Passive Components and Fiber-Based Devices VII; 798616 (2011) https://doi.org/10.1117/12.888653
Event: Asia Communications and Photonics Conference and Exhibition, 2010, Shanghai, Shanghai, China

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.

Citation Download Citation

Dan Yang, Yunqi Liu, Wentao Tu, and Tingyun Wang "The bending sensitivity of long-period fiber gratings written by CO₂ laser under external tension", Proc. SPIE 7986, Passive Components and Fiber-Based Devices VII, 798616 (19 January 2011); https://doi.org/10.1117/12.888653

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