Fiber up-taper assisted Mach-Zehnder interferometer for high sensitive temperature sensing

A new in-line Mach-Zehnder interferometer （MZI） sensor consisting of a stub of multi-mode fiber and an up-taper was proposed and demonstrated. Temperature measurement can be carried out by detecting wavelength shift. Dependency of sensitivity on interferometer length and dip wavelength was discussed...

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Bibliographic Details
Published inFrontiers of Optoelectronics (Online) Vol. 8; no. 4; pp. 431 - 438
Main Authors Mao, Lili, Sun, Qizhen, Lu, Ping, Lao, Zefeng, Liu, Deming
Format Journal Article
LanguageEnglish
Published Beijing Higher Education Press 01.12.2015
Subjects
Biomedical Engineering and Bioengineering
Electrical Engineering
Engineering
Mach
Physics
Research Article
光纤温度传感器
多模光纤
干涉仪
温度灵敏度
锥形
马赫
高灵敏度
up-taper
Mach-Zehnder interferometer (MZI)
multimode fiber (MMF)
fiber sensor
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Summary:A new in-line Mach-Zehnder interferometer （MZI） sensor consisting of a stub of multi-mode fiber and an up-taper was proposed and demonstrated. Temperature measurement can be carried out by detecting wavelength shift. Dependency of sensitivity on interferometer length and dip wavelength was discussed. Experimental results showed a maximum temperature sensitivity of 113.6pm/℃ can be achieved, which is superior to most fiber temperature sensors based on in-line MZIs within the range from 20℃ to 80℃, also a good mechanical strength can be obtained. The proposed sensor is a good candidate for temperature measurement, due to the advantages of simple structure, easy fabrication, cost- effective and high sensitivity.
Bibliography:fiber sensor, Mach-Zehnder interferometer（MZI）, multimode fiber （MMF）, up-taper
A new in-line Mach-Zehnder interferometer （MZI） sensor consisting of a stub of multi-mode fiber and an up-taper was proposed and demonstrated. Temperature measurement can be carried out by detecting wavelength shift. Dependency of sensitivity on interferometer length and dip wavelength was discussed. Experimental results showed a maximum temperature sensitivity of 113.6pm/℃ can be achieved, which is superior to most fiber temperature sensors based on in-line MZIs within the range from 20℃ to 80℃, also a good mechanical strength can be obtained. The proposed sensor is a good candidate for temperature measurement, due to the advantages of simple structure, easy fabrication, cost- effective and high sensitivity.
11-5738/TN
ISSN:2095-2759
2095-2767
DOI:10.1007/s12200-014-0455-x