In-line Mach-Zehnder interferometer with D-shaped fiber grating for temperature-discriminated directional curvature measurement

Biqiang Jiang; Zhiyong Bai; Changle Wang; Yunhe Zhao; Jianlin Zhao; Lin Zhang; Kaiming Zhou

doi:10.1109/JLT.2017.2776297

In-line Mach-Zehnder interferometer with D-shaped fiber grating for temperature-discriminated directional curvature measurement

Biqiang Jiang, Zhiyong Bai, Changle Wang, Yunhe Zhao, Jianlin Zhao, Lin Zhang, Kaiming Zhou

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

Abstract

A high-sensitivity curvature sensing configuration is implemented by using a fiber Mach-Zehnder interferometer (MZI) with D-shaped fiber Bragg grating (FBG). A segment of D-shaped fiber is fusion spliced into a single mode fiber at both sides, and then a short FBG is inscribed in the D-shaped fiber. The fiber device yields a significant spectrum sensitivity as high as 87.7 nm/m -1 to the ultralow curvature range from 0 to 0.3 m -1 , and can distinguish the orientation of curvature experienced by the fiber as the attenuation dip producing either a blue or red wavelength shift, by virtue of the asymmetry of D-shaped fiber cladding. In addition, by tracking both resonant wavelengths of the MZI and embedded FBG, the temperature and curvature can be measured simultaneously.

Original language	English
Pages (from-to)	742 - 747
Number of pages	6
Journal	Journal of Lightwave Technology
Volume	36
Issue number	3
Early online date	24 Nov 2017
DOIs	https://doi.org/10.1109/JLT.2017.2776297
Publication status	Published - 1 Feb 2018

Bibliographical note

© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Funding: This work was supported in part by the National Natural Science Foundation of China under Grants 61505165 and 61775182, in part by the Natural Science Basic Research Plan in Shaanxi Province of China under Grant 2016JQ6032, and in part by Marie Skłodowska-Curie Individual Fellowships in the European Union’s Horizon 2020 Research and Innovation Programme under Grant 660648.

Keywords

curvature measurement
D-shaped fiber
fiber Bragg grating (FBG)
Fiber gratings
Mach-Zehnder interferometer (MZI)
Optical fiber sensors
Optical fibers
Temperature measurement
Temperature sensors

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10.1109/JLT.2017.2776297

In-line Mach-Zehnder interferometer
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Accepted author manuscript, 1.42 MB

Cite this

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title = "In-line Mach-Zehnder interferometer with D-shaped fiber grating for temperature-discriminated directional curvature measurement",

abstract = " A high-sensitivity curvature sensing configuration is implemented by using a fiber Mach-Zehnder interferometer (MZI) with D-shaped fiber Bragg grating (FBG). A segment of D-shaped fiber is fusion spliced into a single mode fiber at both sides, and then a short FBG is inscribed in the D-shaped fiber. The fiber device yields a significant spectrum sensitivity as high as 87.7 nm/m -1 to the ultralow curvature range from 0 to 0.3 m -1 , and can distinguish the orientation of curvature experienced by the fiber as the attenuation dip producing either a blue or red wavelength shift, by virtue of the asymmetry of D-shaped fiber cladding. In addition, by tracking both resonant wavelengths of the MZI and embedded FBG, the temperature and curvature can be measured simultaneously.",

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author = "Biqiang Jiang and Zhiyong Bai and Changle Wang and Yunhe Zhao and Jianlin Zhao and Lin Zhang and Kaiming Zhou",

note = "{\textcopyright} 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Funding: This work was supported in part by the National Natural Science Foundation of China under Grants 61505165 and 61775182, in part by the Natural Science Basic Research Plan in Shaanxi Province of China under Grant 2016JQ6032, and in part by Marie Sk{\l}odowska-Curie Individual Fellowships in the European Union{\textquoteright}s Horizon 2020 Research and Innovation Programme under Grant 660648.",

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AU - Zhao, Jianlin

AU - Zhang, Lin

AU - Zhou, Kaiming

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In-line Mach-Zehnder interferometer with D-shaped fiber grating for temperature-discriminated directional curvature measurement

Abstract

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