Temperature insensitive hysteresis free highly sensitive polymer optical fiber Bragg grating humidity sensor

Optics Express
Getinet WoyessaOle Bang

Abstract

The effect of humidity on annealing of poly (methyl methacrylate) (PMMA) based microstructured polymer optical fiber Bragg gratings (mPOFBGs) and the resulting humidity responsivity are investigated. Typically annealing of PMMA POFs is done in an oven without humidity control around 80°C and therefore at low humidity. We demonstrate that annealing at high humidity and high temperature improves the performances of mPOFBGs in terms of stability and sensitivity to humidity. PMMA POFBGs that are not annealed or annealed at low humidity level will have a low and highly temperature dependent sensitivity and a high hysteresis in the humidity response, in particular when operated at high temperature. PMMA mPOFBGs annealed at high humidity show higher and more linear humidity sensitivity with negligible hysteresis. We also report how annealing at high humidity can blue-shift the FBG wavelength more than 230 nm without loss in the grating strength.

References

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Citations

Apr 20, 2017·Sensors·Joaquin AscorbeIgnacio R Matias
Mar 10, 2017·Sensors·Yanhua LuoJianzhong Zhang
Dec 21, 2017·Sensors·Débora VilarinhoCarlos Marques
Jul 15, 2016·Optics Express·Nianbing ZhongZhonggang Xiong
Apr 14, 2018·Optics Letters·Arnaldo Leal-JuniorCarlos Marques
Dec 20, 2018·Sensors·Shujing SuJijun Xiong
Nov 2, 2019·Optics Letters·Minmin YouJingquan Liu
Aug 17, 2018·Optics Express·Luis PereiraJoão L Pinto
Aug 23, 2018·Optics Express·Andy SchreierKaterina Krebber
Jul 22, 2019·Sensors·Arnaldo G Leal-JuniorAnselmo Frizera
Mar 10, 2018·Applied Optics·Arnaldo Leal-JuniorMaria José Pontes
Apr 1, 2020·Applied Optics·Forough BozorgzadehMostafa Sahrai
Jan 21, 2021·Scientific Reports·Erfan OwjiNazanin Shakiba
Apr 16, 2021·Scientific Reports·Thanyarat BuasiriAndrzej Cwirzen
Jun 3, 2021·Sensors·Rosaria D'AmatoMichele Arturo Caponero
Aug 17, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Jintae ParkDong Woog Lee
Nov 2, 2019·Analytical Chemistry·Xu-Dong Wang, Otto S Wolfbeis

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