Time-dependent variation of fiber Bragg grating reflectivity in PMMA-based polymer optical fibers

D. Saez-Rodriguez; Kristian Nielsen; Ole Bang; D. J. Webb

doi:10.1364/OL.40.001476

Time-dependent variation of fiber Bragg grating reflectivity in PMMA-based polymer optical fibers

D. Saez-Rodriguez, Kristian Nielsen, Ole Bang, D. J. Webb

Aston University

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

In this Letter, we investigate the effects of viscoelasticity on both the strength and resonance wavelength of two fiber Bragg gratings (FBGs) inscribed in microstructured polymer optical fiber (mPOF) made of undoped PMMA. Both FBGs were inscribed under a strain of 1% in order to increase the material photosensitivity. After the inscription, the strain was released, and the FBGs spectra were monitored. We initially observed a decrease of the reflection down to zero after which it began to increase. After that, strain tests were carried out to confirm the results, and finally the gratings were monitored for a further 120 days, with a stable reflection response being observed beyond 50 days. (C) 2015 Optical Society of America

Original language	English
Journal	Optics Letters
Volume	40
Issue number	7
Pages (from-to)	1476-1479
ISSN	0146-9592
DOIs	https://doi.org/10.1364/OL.40.001476
Publication status	Published - 2015

Keywords

OPTICS
STRAIN SENSORS
PHOTOSENSITIVITY
FABRICATION
MECHANISM

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title = "Time-dependent variation of fiber Bragg grating reflectivity in PMMA-based polymer optical fibers",

abstract = "In this Letter, we investigate the effects of viscoelasticity on both the strength and resonance wavelength of two fiber Bragg gratings (FBGs) inscribed in microstructured polymer optical fiber (mPOF) made of undoped PMMA. Both FBGs were inscribed under a strain of 1% in order to increase the material photosensitivity. After the inscription, the strain was released, and the FBGs spectra were monitored. We initially observed a decrease of the reflection down to zero after which it began to increase. After that, strain tests were carried out to confirm the results, and finally the gratings were monitored for a further 120 days, with a stable reflection response being observed beyond 50 days. (C) 2015 Optical Society of America",

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AU - Saez-Rodriguez, D.

AU - Nielsen, Kristian

AU - Bang, Ole

AU - Webb, D. J.

PY - 2015

Y1 - 2015

N2 - In this Letter, we investigate the effects of viscoelasticity on both the strength and resonance wavelength of two fiber Bragg gratings (FBGs) inscribed in microstructured polymer optical fiber (mPOF) made of undoped PMMA. Both FBGs were inscribed under a strain of 1% in order to increase the material photosensitivity. After the inscription, the strain was released, and the FBGs spectra were monitored. We initially observed a decrease of the reflection down to zero after which it began to increase. After that, strain tests were carried out to confirm the results, and finally the gratings were monitored for a further 120 days, with a stable reflection response being observed beyond 50 days. (C) 2015 Optical Society of America

AB - In this Letter, we investigate the effects of viscoelasticity on both the strength and resonance wavelength of two fiber Bragg gratings (FBGs) inscribed in microstructured polymer optical fiber (mPOF) made of undoped PMMA. Both FBGs were inscribed under a strain of 1% in order to increase the material photosensitivity. After the inscription, the strain was released, and the FBGs spectra were monitored. We initially observed a decrease of the reflection down to zero after which it began to increase. After that, strain tests were carried out to confirm the results, and finally the gratings were monitored for a further 120 days, with a stable reflection response being observed beyond 50 days. (C) 2015 Optical Society of America

KW - OPTICS

KW - STRAIN SENSORS

KW - PHOTOSENSITIVITY

KW - FABRICATION

KW - MECHANISM

U2 - 10.1364/OL.40.001476

DO - 10.1364/OL.40.001476

M3 - Journal article

SN - 0146-9592

VL - 40

SP - 1476

EP - 1479

JO - Optics Letters

JF - Optics Letters

IS - 7

ER -

Time-dependent variation of fiber Bragg grating reflectivity in PMMA-based polymer optical fibers

Abstract

Keywords

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