Hydrostatic pressure dependence of Brillouin frequency shift in polymer optical fibers

Yosuke Mizuno, Heeyoung Lee, Neisei Hayashi, Kentaro Nakamura

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


We experimentally investigate the pressure dependence of the Brillouin frequency shift (BFS) in a polymer optical fiber. The BFS dependence on pressure shows a hysteresis, but after several cycles of increasing/decreasing pressure, the hysteresis is mitigated. The pressure dependence coefficient at this state is +4.3 MHz/MPa, the absolute value of which is 5.8 times as large as that of bare silica fibers (the sign is opposite). The reason for this unique behavior is discussed. This result indicates that, by using plastic optical fibers instead of silica fibers, distributed pressure sensing with a higher sensitivity is potentially feasible.

Original languageEnglish
Article number012502
JournalApplied Physics Express
Issue number1
Publication statusPublished - 2018 Jan
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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