Temperature dependence of Brillouin frequency shift in polymers controlled by plasticization effect

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

研究成果: Article査読

4 被引用数 (Scopus)

抄録

The temperature-dependence coefficient of Brillouin frequency shift (BFS) in perfluorinated graded-index polymer optical fibers is known to change drastically, because of the glass transition, at a certain critical temperature (Tc), above which the BFS becomes more sensitive to temperature. In this paper, we demonstrate that the Tc value can be adjusted by varying the dopant concentration, which is originally used to form the graded-index profile in the core region. Furthermore, we show that the temperature sensitivity of the BFS is enhanced in the presence of dopant probably because the temperature sensitivity of Young's modulus is increased. The results indicate a big potential of the temperature sensors based on Brillouin scattering with an extremely high sensitivity in a specific desired temperature range.

本文言語English
論文番号144505
ジャーナルJournal of Applied Physics
117
14
DOI
出版ステータスPublished - 2015 4月 14

ASJC Scopus subject areas

  • 物理学および天文学一般

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