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Optical Engineering

Reflection-based phase-shifted long period fiber grating for simultaneous measurement of temperature and refractive index
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Paper Abstract

We report a reflection-based phase-shifted long period fiber grating (PS-LPFG) and demonstrate its capability for simultaneous measurement of temperature and external reflective index (RI). The sensor device comprises a grating directly written by CO2 laser and silver-coated end face. A π-shifted LPFG is presented with two attenuation bands through its reflection spectrum. These two bands have different sensitivity towards temperature and external RI that can be used for simultaneous measurement of the two variables. The experimental results show that this probe-type PS-LPFG performs well in terms of linearity and sensitivity.

Paper Details

Date Published: 4 January 2013
PDF: 5 pages
Opt. Eng. 52(1) 014404 doi: 10.1117/1.OE.52.1.014404
Published in: Optical Engineering Volume 52, Issue 1
Show Author Affiliations
Jie Huang, Missouri Univ. of Science and Technology (United States)
Xinwei Lan, Missouri Univ. of Science and Technology (United States)
Amardeep Kaur, Missouri Univ. of Science and Technology (United States)
Hanzheng Wang, Missouri Univ. of Science and Technology (United States)
Lei Yuan, Missouri Univ. of Science and Technology (United States)
Hai Xiao, Missouri Univ. of Science and Technology (United States)


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