Fiber inline Mach-Zehnder interferometer fabricated by fusion splicing for high temperature sensing

Benye Li, Shufeng Ni, Zhitao Cao, Sumei Wang*

*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

High temperature detection of micro structure area with high sensitivity has aroused more and more interest recently. A high temperature sensor based on ultra-abrupt tapered fiber Mach-Zehnder interferometer (MZI) is proposed and fabricated by using a fusion-splicing method.The two normal cleaved ends are separated by a distance and become ellipsoidal by one time discharge using a fiber fusion splicer. Then the two ellipsoidal fiber heads contacted between the splicer electrodes are fused together to form the taper. And the other is formed through the same process separated by a distance of L. The thermal characteristic is investigated in 25-1100 °C, which temperature limit is highest of tapered fiber MZIs. It is observed that sensitivity varies with temperature ranges, which are 25 pm/°C in low-temperature range(25-300°C) and 105 pm/°C in high-temperature range(300-1100°C) respectively. The sensor demonstrates good thermal stability after annealing at 400 °C and 800 °C for 8 h respectively. The simple ultra-taper based MZI sensor has potential application prospect in the field of high temperature detection, such as the temperature of aeroengine.

Original languageEnglish
Title of host publicationInternational Symposium on Optoelectronic Technology and Application 2014
Subtitle of host publicationLaser and Optical Measurement Technology; and Fiber Optic Sensors
EditorsYanbiao Liao, Jin Lu, Wei Wang, Mircea Guina, Haimei Gong, Zhichuan Niu, David Sampson
PublisherSPIE
ISBN (Electronic)9781628413830
DOIs
Publication statusPublished - 2014
EventInternational Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors, IPTA 2014 - Beijing, China
Duration: 13 May 201415 May 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9297
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceInternational Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors, IPTA 2014
Country/TerritoryChina
CityBeijing
Period13/05/1415/05/14

Keywords

  • Fiber taper
  • Mach-Zehnder interferometer
  • Temperature sensor

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