Brillouin properties influenced by glass transition in plastic optical fibers

Kazunari Minakawa, Kotaro Koike, Qiming Du, Neisei Hayashi, Yasuhiro Koike, Yosuke Mizuno, Kentaro Nakamura

Research output: Contribution to conferencePaper

Abstract

A temperature-dependence coefficient of Brillouin frequency shift (BFS) in plastic optical fibers (POFs) is known to start decreasing drastically at a certain "Brillouin critical temperature". Here, we study the relationship between the critical temperature and the core glass transition temperature (Tg) using five poly(2,2,2-trifluoroethyl methacrylate) samples with different Tg values. In all the samples, the BFS is found to start decreasing abruptly at a temperature lower than Tg by approximately 10 °C, which agrees well with the phase transition starting temperature measured by using a differential scanning calorimeter. Thus, the critical temperature in POFs is shown to be adjustable by controlling Tg, leading to the possible development of distributed temperature sensors with ultra-high sensitivity.

Original languageEnglish
Pages236-239
Number of pages4
Publication statusPublished - 2014 Jan 1
Event23rd International Conference on Plastic Optical Fibers, POF 2014 - Hiyoshi, Yokohama, Japan
Duration: 2014 Oct 82014 Oct 10

Other

Other23rd International Conference on Plastic Optical Fibers, POF 2014
CountryJapan
CityHiyoshi, Yokohama
Period14/10/814/10/10

Keywords

  • Brillouin frequency shift
  • Brillouin scattering
  • Glass transition Temperature
  • Optical fiber sensors
  • Temperature sensing

ASJC Scopus subject areas

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

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  • Cite this

    Minakawa, K., Koike, K., Du, Q., Hayashi, N., Koike, Y., Mizuno, Y., & Nakamura, K. (2014). Brillouin properties influenced by glass transition in plastic optical fibers. 236-239. Paper presented at 23rd International Conference on Plastic Optical Fibers, POF 2014, Hiyoshi, Yokohama, Japan.