Observation of multimodal interference in millimeter-long polymer optical fibers

Yosuke Mizuno, Sonoko Hagiwara, Natsuki Matsutani, Kohei Noda, Heeyoung Lee, Kentaro Nakamura

Research output: Contribution to journalArticlepeer-review

Abstract

We observe multimodal interference in single-mode-multimodesingle- mode sensors comprising short polymer optical fibers (POFs) with lengths from 100mm down to 7 mm. Characteristic spectral peaks/dips are observed not in the conventionally used telecom band but around 1000 nm. We find that the dip wavelength depends on temperature but that the sensitivity is much lower than those obtained in the longer wavelength range when longer POFs are used. We discuss the possibility that, even with the reduced sensitivity, our success in observing multimodal interference in millimeter-long optical fibers will be a basis toward the combined use of frequency and intensity information in conventional fiber-optic single-point sensors for discriminative measurement of multiple physical parameters.

Original languageEnglish
Article number20190135
JournalIEICE Electronics Express
Volume16
Issue number8
DOIs
Publication statusPublished - 2019

Keywords

  • Multimodal interference
  • Optical fiber sensors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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