Miniature All-Fiber High Temperature Sensor Based on Michelson Interferometer Formed with a Novel Core-Mismatching Fiber Joint

Haoran Cao; Xuewen Shu

doi:10.1109/JSEN.2017.2693386

Miniature All-Fiber High Temperature Sensor Based on Michelson Interferometer Formed with a Novel Core-Mismatching Fiber Joint

Haoran Cao
, Xuewen Shu^*

^*Corresponding author for this work

Huazhong University of Science and Technology

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

An miniature all-fiber high temperature sensor based on Michelson interferometer is experimentally demonstrated in common single-mode fiber. The sensor probe consists of a core-mismatching fiber joint (CMFJ) followed by a section of end-cleaved fiber. Generating of the CMFJ is due to fusion-splicing the prefusion-inducing micro-bend fiber end with a normal cleaved fiber end in axial alignment. Light coupled into the fiber cladding by the CMFJ is coupled back to the fiber core at the same point after being reflected by the cleaved fiber end-face, which then interferes with the reflected core propagating light. The dip wavelength in the reflected interferential spectrum presents a red shift in the temperature range of 50 °C to 600 °C. The maximum temperature sensitivity is 115.34 pm/°C at 550 °C, and the nonlinear correlation coefficient is 99.95%. The all-fiber temperature sensor owns the advantages of compactness, easy fabrication, low cost, and good repeatability, and has the ability to monitor temperature changes in different environments.

Original language	English
Article number	7898421
Pages (from-to)	3341-3345
Number of pages	5
Journal	IEEE Sensors Journal
Volume	17
Issue number	11
Early online date	12 Apr 2017
DOIs	https://doi.org/10.1109/JSEN.2017.2693386
Publication status	Published - 1 Jun 2017

Funding

Manuscript received March 20, 2017; revised April 9, 2017; accepted April 9, 2017. Date of publication April 12, 2017; date of current version May 5, 2017. This work was supported in part by the Director Fund of WNLO and in part by the National 1000 Young Talents Program of China. The associate editor coordinating the review of this paper and approving it for publication was Dr. Daniele Tosi. (Corresponding author: Xuewen Shu.) The authors are with the Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China (e-mail: [email protected]). Digital Object Identifier 10.1109/JSEN.2017.2693386

Keywords

high-temperature sensing
Michelson interferometer
Optical fiber sensors

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10.1109/JSEN.2017.2693386

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title = "Miniature All-Fiber High Temperature Sensor Based on Michelson Interferometer Formed with a Novel Core-Mismatching Fiber Joint",

abstract = "An miniature all-fiber high temperature sensor based on Michelson interferometer is experimentally demonstrated in common single-mode fiber. The sensor probe consists of a core-mismatching fiber joint (CMFJ) followed by a section of end-cleaved fiber. Generating of the CMFJ is due to fusion-splicing the prefusion-inducing micro-bend fiber end with a normal cleaved fiber end in axial alignment. Light coupled into the fiber cladding by the CMFJ is coupled back to the fiber core at the same point after being reflected by the cleaved fiber end-face, which then interferes with the reflected core propagating light. The dip wavelength in the reflected interferential spectrum presents a red shift in the temperature range of 50 °C to 600 °C. The maximum temperature sensitivity is 115.34 pm/°C at 550 °C, and the nonlinear correlation coefficient is 99.95\%. The all-fiber temperature sensor owns the advantages of compactness, easy fabrication, low cost, and good repeatability, and has the ability to monitor temperature changes in different environments.",

keywords = "high-temperature sensing, Michelson interferometer, Optical fiber sensors",

author = "Haoran Cao and Xuewen Shu",

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N2 - An miniature all-fiber high temperature sensor based on Michelson interferometer is experimentally demonstrated in common single-mode fiber. The sensor probe consists of a core-mismatching fiber joint (CMFJ) followed by a section of end-cleaved fiber. Generating of the CMFJ is due to fusion-splicing the prefusion-inducing micro-bend fiber end with a normal cleaved fiber end in axial alignment. Light coupled into the fiber cladding by the CMFJ is coupled back to the fiber core at the same point after being reflected by the cleaved fiber end-face, which then interferes with the reflected core propagating light. The dip wavelength in the reflected interferential spectrum presents a red shift in the temperature range of 50 °C to 600 °C. The maximum temperature sensitivity is 115.34 pm/°C at 550 °C, and the nonlinear correlation coefficient is 99.95%. The all-fiber temperature sensor owns the advantages of compactness, easy fabrication, low cost, and good repeatability, and has the ability to monitor temperature changes in different environments.

AB - An miniature all-fiber high temperature sensor based on Michelson interferometer is experimentally demonstrated in common single-mode fiber. The sensor probe consists of a core-mismatching fiber joint (CMFJ) followed by a section of end-cleaved fiber. Generating of the CMFJ is due to fusion-splicing the prefusion-inducing micro-bend fiber end with a normal cleaved fiber end in axial alignment. Light coupled into the fiber cladding by the CMFJ is coupled back to the fiber core at the same point after being reflected by the cleaved fiber end-face, which then interferes with the reflected core propagating light. The dip wavelength in the reflected interferential spectrum presents a red shift in the temperature range of 50 °C to 600 °C. The maximum temperature sensitivity is 115.34 pm/°C at 550 °C, and the nonlinear correlation coefficient is 99.95%. The all-fiber temperature sensor owns the advantages of compactness, easy fabrication, low cost, and good repeatability, and has the ability to monitor temperature changes in different environments.

KW - high-temperature sensing

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Miniature All-Fiber High Temperature Sensor Based on Michelson Interferometer Formed with a Novel Core-Mismatching Fiber Joint

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