Long-period gratings in special geometry fibers for high-resolution and selective sensors

Lars Glavind; John Canning; Shaorui Gao; Kevin J. Cook; Gang-Ding Peng; Yanhua Luo; Bjarne Funch Skipper; Martin V. Kristensen

doi:10.1117/1.OE.53.6.066109

25 June 2014 Long-period gratings in special geometry fibers for high-resolution and selective sensors

Lars Glavind, John Canning, Shaorui Gao, Kevin J. Cook, Gang-Ding Peng, Yanhua Luo, Bjarne Funch Skipper, Martin V. Kristensen

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Optical Engineering, Vol. 53, Issue 6, 066109 (June 2014). https://doi.org/10.1117/1.OE.53.6.066109

Abstract

Advantages for sensor applications of long-period gratings (LPGs) in special optical fibers are reported. Two consecutive LPGs separated by 60 to 100 mm interfere to improve the resolution and reduce noise in a highly doped fiber with inner cladding and in a D-shaped fiber. These gratings provide good contrast to increase the resolution for sensing applications, with or without access to the surroundings along the fiber. The mode profiles of the devices were characterized experimentally to gain deeper insight into the improved functionality.

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Lars Glavind, John Canning, Shaorui Gao, Kevin J. Cook, Gang-Ding Peng, Yanhua Luo, Bjarne Funch Skipper, and Martin V. Kristensen "Long-period gratings in special geometry fibers for high-resolution and selective sensors," Optical Engineering 53(6), 066109 (25 June 2014). https://doi.org/10.1117/1.OE.53.6.066109

Published: 25 June 2014

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