Characterization of polymer fiber Bragg grating with ultrafast laser micromachining

Liu, Chen, Cardoso, Marcos R., Zhang, Wei and Chen, Xianfeng (2016). Characterization of polymer fiber Bragg grating with ultrafast laser micromachining. IEEE Photonics Technology Letters, 28 (13), pp. 1450-1453.

Abstract

We report that the main photosensitive mechanism of poly(methyl methacrylate)-based optical fiber Bragg grating (POFBG) under ultraviolet laser micromachining is a complex process of both photodegradation and negative thermo-optic effect. We found experimentally the unique characteristics of Bragg resonance splitting and reunion during the laser micromachining process providing the evidence of photodegradation, while the mean refractive index change of POFBG was measured to be negative confirming further photodegradation of polymer fiber. The thermal-induced refractive index change of POFBG was also observed by recording the Bragg wavelength shift. Furthermore, the dynamic thermal response of the micromachined-POFBG was demonstrated under constant humidity, showing a linear and negative response of around -47.1 pm/°C.

Publication DOI: https://doi.org/10.1109/LPT.2016.2554200
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
Additional Information: © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords: Bragg grating,fiber optics,fiber sensor,photodegradation,photosensitivity,PMMA,polymer optical fiber,Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Full Text Link: http://ieeexplo ... rnumber=7452607
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2016-07-01
Authors: Liu, Chen
Cardoso, Marcos R.
Zhang, Wei ( 0000-0002-3584-8541)
Chen, Xianfeng

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Version: Accepted Version


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