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High sensitivity balloon-like refractometric sensor based on singlemode-tapered multimode-singlemode fiber

  • Biyao Yang
  • , Yanxiong Niu
  • , Bowen Yang
  • , Yanhui Hu
  • , Lingling Dai
  • , Yiheng Yin
  • , Ming Ding*
  • *Corresponding author for this work
  • Beihang University

Research output: Contribution to journalArticlepeer-review

Abstract

A high sensitivity refractive index (RI) sensor based on balloon-like singlemode-tapered multimode-singlemode (STMS) fiber structure is proposed. The configuration is formed by bending the tapered multimode fiber (MMF) like a balloon shape, which is sandwiched between two singlemode fibers (SMFs). Taking the advantage of tapering and bending, the sensitivity is dramatically improved. The maximum sensitivity of 6909 nm/RIU at RI = 1.42 is experimentally achieved. The proposed refractometer is promising and attractive in chemical and biological applications for its superior properties, such as high sensitivity, compact size, easy fabrication, and low cost.

Original languageEnglish
Pages (from-to)42-47
Number of pages6
JournalSensors and Actuators A: Physical
Volume281
DOIs
StatePublished - 1 Oct 2018

Keywords

  • Balloon-like structure
  • Fiber optics refractometer
  • Singlemode-tapered multimode-singlemode fiber

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