Temperature sensing based on multimodal interference in polymer optical fibers: Room-temperature sensitivity enhancement by annealing

Tomohito Kawa, Goki Numata, Heeyoung Lee, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

To date, we have developed a temperature sensor based on multimodal interference in a polymer optical fiber (POF) with an extremely high sensitivity. Here, we experimentally evaluate the influence of annealing (heat treatment) of the POF on the temperature sensitivity at room temperature. We show that the temperature sensitivity is enhanced with increasing annealing temperature, and that, by annealing the POF at 90 °C, we can achieve a temperature sensitivity of +2.17 nm/°C, which is 2.9 times larger than that without annealing (+0.75 nm/°C).

Original languageEnglish
Article number078002
JournalJapanese Journal of Applied Physics
Volume56
Issue number7
DOIs
Publication statusPublished - 2017 Jul
Externally publishedYes

ASJC Scopus subject areas

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

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