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Proceedings Paper

Dual-peak wide range temperature LPG sensor fabricated with a CO2 Laser and a high resolution system
Author(s): Pedro Simões; Paulo Lopes
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Paper Abstract

In this work we present a specially designed high resolution electromechanical system to be used with a cw CO2 Laser to fabricate high quality long period grating sensors (LPG). We also describe the experiments carried out to measure the resulting enhanced transmission spectra of the fabricated LPG and to measure their response as temperature sensors. Sharp and well pronounced spectral peaks were obtained reaching 30dB. Sensitivity values of 118 pm/°C were easily obtained without any fiber coating. Wide range temperature coverage (20 - 600 °C) was attained by making use of two distinctive peaks of the transmission spectrum.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84214D (17 October 2012); doi: 10.1117/12.970605
Show Author Affiliations
Pedro Simões, Univ. of Aveiro (Portugal)
Paulo Lopes, Univ. of Aveiro (Portugal)

Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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