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

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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
Original languageEnglish
JournalOptics Express
Volume24
Issue number2
Pages (from-to)1206-1213
ISSN1094-4087
DOIs
Publication statusPublished - 2016

Cite this

@article{3559ef4fade84bd2ac21f8e36dae90ad,
title = "Temperature insensitive hysteresis free highly sensitive polymer optical fiber Bragg grating humidity sensor",
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",
author = "Getinet Woyessa and Kristian Nielsen and Alessio Stefani and Christos Markos and Ole Bang",
year = "2016",
doi = "10.1364/OE.24.001206",
language = "English",
volume = "24",
pages = "1206--1213",
journal = "Optics Express",
issn = "1094-4087",
publisher = "The Optical Society",
number = "2",

}

TY - JOUR

T1 - Temperature insensitive hysteresis free highly sensitive polymer optical fiber Bragg grating humidity sensor

AU - Woyessa, Getinet

AU - Nielsen, Kristian

AU - Stefani, Alessio

AU - Markos, Christos

AU - Bang, Ole

PY - 2016

Y1 - 2016

N2 - 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

AB - 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

U2 - 10.1364/OE.24.001206

DO - 10.1364/OE.24.001206

M3 - Journal article

VL - 24

SP - 1206

EP - 1213

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 2

ER -