Strain and temperature dependencies of multimodal interference spectra in hetero-core-fiber structures

Yosuke Mizuno, Sonoko Hagiwara, Heeyoung Lee, Neisei Hayashi, Michiko Nishiyama, Kazuhiro Wanatabe, Kentaro Nakamura

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We investigate, for the first time, the temperature and strain dependencies of the spectral dips of the multimodal interference patterns in hetero-core-fiber structures at telecom wavelength. With increasing temperature and strain, the spectral dips shifted to shorter wavelengths with dependence coefficients of -3.5 nm C-1 and -0.62 pm/μϵ, respectively. Their absolute values were ∼60 times larger and ∼30 times smaller than the temperature and strain sensitivities of a standard single-mode-multimode-single-mode sensor, respectively. This result implies that the hetero-core-fiber structures can be potentially used to develop highly sensitive temperature sensors with reduced strain sensitivity.

Original languageEnglish
Article number058002
JournalJapanese Journal of Applied Physics
Volume59
Issue number5
DOIs
Publication statusPublished - 2020 May 1

ASJC Scopus subject areas

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

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