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Proceedings Paper

Temperature and strain insensitive long period gratings (LPGs) in W fibre with post-annealing
Author(s): Wen Liu; John Canning; Kevin Cook; Cicero Martelli
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Paper Abstract

LPGs with ultra-low strain and temperature sensitivities are reported in germanosilicate fibre with a W-shaped index profile. Through low temperature annealing, the temperature and strain coefficients are dramatically reduced to dλ/dT ~ - (8.75×10-2) pm/K and dλ/d epsilon ~ (2.21×10-2) pm/μepsilon respectively. As a control reference, LPGs in standard SMF-28 fibre were inscribed but were not found to exhibit similar reductions in sensitivity; this illustrates that the design of the W-shaped, with its inner cladding, plays a key role in altering the LPG performance.

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96344L (28 September 2015); doi: 10.1117/12.2191874
Show Author Affiliations
Wen Liu, The Univ. of Sydney (Australia)
National Univ. of Defense Technology (China)
John Canning, The Univ. of Sydney (Australia)
Kevin Cook, The Univ. of Sydney (Australia)
Cicero Martelli, Federal Univ. of Technology, Paraná (Brazil)

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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