Study of bragg grating inscription mechanisms in PMMA POFs using 400 nm femtosecond pulses

X. Hu, D. Kinet, C. F.J. Pun, Hwa Yaw Tam, C. Caucheteur

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

We report uniform Bragg grating growth in trans-4-stilbenemethanol (TS)-doped poly(methyl methacrylate) (PMMA) optical fibers. Fiber Bragg gratings (FBGs) were inscribed using a 400 nm femtosecond pulsed laser and a 1060-nm-period uniform phase mask. With a mean laser power of 20 mW, the grating reflectivity reaches 98 % in ~60 seconds. Then, with two mean laser powers (15 mW and 20 mW), reflectivity growth dynamics during the inscription process were demonstrated. After that, the stability of the inscribed gratings was investigated as a function of time, which was explained by the scheme of energy levels involved in the trans-cis photoisomerization process.
Original languageEnglish
Title of host publication26th International Conference on Plastic Optical Fibres, POF 2017 - Proceedings
PublisherInstituto de Telecomunicacoes
ISBN (Electronic)9789899734524
Publication statusPublished - 1 Jan 2017
Event26th International Conference on Plastic Optical Fibres, POF 2017 - Proceedings - Aveiro, Portugal
Duration: 13 Sep 201715 Sep 2017

Conference

Conference26th International Conference on Plastic Optical Fibres, POF 2017 - Proceedings
Country/TerritoryPortugal
CityAveiro
Period13/09/1715/09/17

ASJC Scopus subject areas

  • Polymers and Plastics
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

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