Characterization of polymer fiber Bragg grating with ultrafast laser micromachining

Chen Liu, Marcos R. Cardoso, Wei Zhang, Xianfeng Chen*

*Corresponding author for this work

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)1450-1453
Number of pages4
JournalIEEE Photonics Technology Letters
Volume28
Issue number13
Early online date14 Apr 2016
DOIs
Publication statusPublished - 1 Jul 2016

Fingerprint

Ultrafast lasers
laser machining
Photodegradation
Micromachining
Fiber Bragg gratings
Bragg gratings
Polymers
refractivity
fibers
Refractive index
polymers
ultraviolet lasers
polymethyl methacrylate
Ultraviolet lasers
humidity
optical fibers
recording
Polymethyl Methacrylate
optics
Polymethyl methacrylates

Bibliographical note

© 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.

Keywords

  • Bragg grating
  • fiber optics
  • fiber sensor
  • photodegradation
  • photosensitivity
  • PMMA
  • polymer optical fiber

Cite this

Liu, Chen ; Cardoso, Marcos R. ; Zhang, Wei ; Chen, Xianfeng. / Characterization of polymer fiber Bragg grating with ultrafast laser micromachining. In: IEEE Photonics Technology Letters. 2016 ; Vol. 28, No. 13. pp. 1450-1453.
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Characterization of polymer fiber Bragg grating with ultrafast laser micromachining. / Liu, Chen; Cardoso, Marcos R.; Zhang, Wei; Chen, Xianfeng.

In: IEEE Photonics Technology Letters, Vol. 28, No. 13, 01.07.2016, p. 1450-1453.

Research output: Contribution to journalArticle

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