Wavelength drift of PMMA-based optical fiber bragg grating induced by optical absorption


The transmission loss in polymer optical fiber (POF) is much higher than that in silica fiber. Very strong absorption bands dominate throughout the visible and near infrared. Optical absorption increases the internal temperature of the polymer fiber and reduces the wavelength of any POF Bragg grating (POFBG) inscribed within the fiber. In this letter, we have investigated the wavelength drift of FBGs inscribed in poly(methyl methacrylate)-based fiber under illumination at different wavelengths. The experiments have shown that the characteristic wavelength of such a POFBG starts decreasing after a light source is applied to it. This decrease continues until equilibrium inside the fiber is established, depending on the surrounding humidity, optical power applied, and operation wavelength.

Publication DOI: https://doi.org/10.1109/LPT.2014.2371066
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
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Uncontrolled Keywords: fiber bragg gratings,humidity dependence,photothermal effects polymer optical fiber,Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Publication ISSN: 1941-0174
Last Modified: 02 Feb 2024 08:04
Date Deposited: 05 Mar 2015 14:50
Full Text Link: http://ieeexplo ... rnumber=6975133
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2015-02-15
Published Online Date: 2014-12-04
Authors: Zhang, Wei (ORCID Profile 0000-0002-3584-8541)
Abang, Ada
Webb, David J. (ORCID Profile 0000-0002-5495-1296)
Peng, Gang-Ding



Version: Accepted Version

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