A new Mach-Zehnder interferometer in a thinned-cladding fiber fabricated by electric arc for high sensitivity refractive index sensing

Benye Li, Lan Jiang*, Sumei Wang, Qianghua Chen Mengmeng Wang, Jinpeng Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

This study proposes an inline electric-arc induced Mach-Zehnder interferometer (MZI) in a thinned cladding fiber. The proposed MZI is used for refractive index (RI) sensing. At the diameter of 56 μm and the length of 18 mm, in the RI of 1.33481.3558, the sensitivity is ∼580 nm/RIU, that is about 20 times greater than those of taper-based MZI sensors. Temperature characteristics of the MZI are investigated in 50800 °C. It is demonstrated that the proposed MZI is a good choice for high-temperature harsh environment sensing.

Original languageEnglish
Pages (from-to)829-832
Number of pages4
JournalOptics and Lasers in Engineering
Volume50
Issue number6
DOIs
Publication statusPublished - Jun 2012

Keywords

  • Electric-arc technique
  • Mach-Zehnder interferometer
  • Refractive index sensor

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