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

doi:10.1063/1.4917533

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

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

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 (T_c), above which the BFS becomes more sensitive to temperature. In this paper, we demonstrate that the T_c 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.

Original language	English
Article number	144505
Journal	Journal of Applied Physics
Volume	117
Issue number	14
DOIs	https://doi.org/10.1063/1.4917533
Publication status	Published - 2015 Apr 14

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.4917533

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abstract = "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.",

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AU - Minakawa, Kazunari

AU - Koike, Kotaro

AU - Du, Qiming

AU - Hayashi, Neisei

AU - Koike, Yasuhiro

AU - Mizuno, Yosuke

AU - Nakamura, Kentaro

PY - 2015/4/14

Y1 - 2015/4/14

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AB - 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.

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