Sensitivity improvement of optical-fiber temperature sensor with solid cladding material based on multimode interference

Hideki Fukano, Yohei Kushida, Shuji Taue

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

We have developed a simple, high-sensitivity optical-fiber temperature sensor based on multimode interference (MMI). The fabricated MMI structure comprises three segmented fibers: a single-mode fiber (SMF); a large-core multimode fiber (MMF), whose outer surface is coated with a temperature-sensitive material; and another SMF. Fluoroacrylate and silicone rubber are tested as temperature-sensitive cladding materials. The silicone rubber coating exhibits a large shift in interference wavelength with temperature, producing a very fine temperature resolution as low as 0.01°C.

Original languageEnglish
Article number032502
JournalJapanese Journal of Applied Physics
Volume54
Issue number3
DOIs
Publication statusPublished - Mar 1 2015

ASJC Scopus subject areas

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

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