Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/74475
Title: Long period fiber grating based on periodically screw-Type distortions for torsion sensing
Authors: Deng, M
Xu, J
Zhang, Z
Bai, Z
Liu, S
Wang, Y
Zhang, Y
Liao, C
Jin, W 
Peng, G
Wang, Y
Issue Date: 2017
Publisher: Optical Society of America
Source: Optics express, 2017, v. 25, no. 13, p. 14308-14316 How to cite?
Journal: Optics express 
Abstract: A novel long-period fiber grating (LPFG), fabricated by periodically cascading a series of screw-Type distortions, is proposed and experimentally demonstrated. These screwtype distortions are induced by twisting the fiber during CO2 laser beam exposure. The resulting LPFG will either be left-or right-hand helical, depending on the twist rate and direction used during fabrication, with a certain frozen shear strain. Due to the independence between grating pitch and twist rate, this type of LPFG could be more flexible than the helical-or chiral-fiber gratings reported previously. During LPFG twisting, the device displays good directional dependence and an enhanced torsion sensitivity of 0.1604 nm/(rad/m), which implies the structure could be an excellent candidate for torsion sensors.
URI: http://hdl.handle.net/10397/74475
EISSN: 1094-4087
DOI: 10.1364/OE.25.014308
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