Highly sensitive temperature and strain sensors based on all-fiber 45°-TFG Lyot filter

Yan, Zhijun, Adedotun, Adebayo, Zhou, Kaiming and Zhang, Lin (2012). Highly sensitive temperature and strain sensors based on all-fiber 45°-TFG Lyot filter. IN: UNSPECIFIED Berghmans, Francis; Mignani, Anna G. and de Moor, Piet (eds) SPIE proceedings . SPIE.

Abstract

We demonstrate highly sensitive temperature and strain sensors based on an all-fiber Lyot filter structure, which is formed by concatenating two 45°-TFGs (tilted fiber gratings) with a PM fiber cavity. The experiment results show the all-fiber 45°-TFG Lyot filter has very high sensitivity to strain and temperature. The 45°-TFG Lyot filters of two different cavity lengths (18cm and 40 cm) have been evaluated for temperature sensing by heating a section of the cavity from 10°C to 50°C. The experiment results have shown remarkably high temperature sensitivities of 0.616nm/°C for 18cm and 0.31nm/°C for 40cm long cavity filter, respectively. The 18cm long cavity filter has been subjected to strain variations up to around 550μ ε and the filter has exhibited strain sensitivities of 0.02499nm/μ ε and 0.012nm/μ ε for two straining situations, where its cavity middle section of 18cm and 9cm were stretched, respectively.

Publication DOI: https://doi.org/10.1117/12.921461
Divisions: Engineering & Applied Sciences > Institute of Photonics
Engineering & Applied Sciences > Electrical, electronic & power engineering
Additional Information: Zhijun Yan ; Adebayo Adedotun ; Kaiming Zhou and Lin Zhang, "Highly sensitive temperature and strain sensors based on all-fiber 45°-TFG Lyot filter", Proc. SPIE 8439, Optical Sensing and Detection II, 843905 (April 23, 2012). Copyright 2012 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. DOI: http://dx.doi.org/10.1117/12.921461
Event Title: Optical sensing and detection II
Event Type: Other
Event Dates: 2012-04-16 - 2012-04-19
Uncontrolled Keywords: Lyot filter,sensor,strain,temperature,TFG,Applied Mathematics,Computer Science Applications,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Condensed Matter Physics
Full Text Link: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1316698
Related URLs: http://www.scopus.com/inward/record.url?scp=84861924014&partnerID=8YFLogxK (Scopus URL)
Published Date: 2012-04-16
Authors: Yan, Zhijun
Adedotun, Adebayo
Zhou, Kaiming ( 0000-0002-6011-1912)
Zhang, Lin ( 0000-0002-1691-5577)

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