Strain-insensitive optical fiber Mach-Zehnder interferometric temperature sensor

Yingyu Yu*, Lan Jiang, Sumei Wang, Jinpeng Yang, Benye Li

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

A fiber Mach-Zehnder interferometer (MZI) constructed by concatenating a micro cavity in the fiber core and a taper is proposed and applied for temperature sensing. Femtosecond laser micro-machining technique and fusion splicing technique are utilized to fabricate the micro cavity in a single mode optical fiber core. The fiber taper is fabricated by electric arc-discharge with a conventional fusion splicer. A sensitivity of 68 pm/°C is obtained at the temperature range of 200-400°C. The interferometer is also characterized by different strain.It exhibits very low strain sensitivity because only low order cladding modes are excited by the micro cavity, which is a desirable merit for temperature sensor to eliminate cross sensitivity to strain.

Original languageEnglish
Title of host publication2011 International Conference on Optical Instruments and Technology
Subtitle of host publicationOptical Sensors and Applications
DOIs
Publication statusPublished - 2011
Event2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications - Beijing, China
Duration: 6 Nov 20119 Nov 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8199
ISSN (Print)0277-786X

Conference

Conference2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications
Country/TerritoryChina
CityBeijing
Period6/11/119/11/11

Keywords

  • Mach-zehnder interferometric
  • Optical fiber
  • Sensor
  • Strain
  • Temperature

Fingerprint

Dive into the research topics of 'Strain-insensitive optical fiber Mach-Zehnder interferometric temperature sensor'. Together they form a unique fingerprint.

Cite this