Numerical and experimental analysis of sensitivity-enhanced RI sensor based on Ex-TFG in thin cladding fiber

Zhijun Yan; Zhongyuan Sun; Kaiming Zhou; Binbin Luo; Jianfeng Li; Hushan Wang; Yishan Wang; Wei Zhao; Lin Zhang

doi:10.1109/JLT.2015.2422076

Numerical and experimental analysis of sensitivity-enhanced RI sensor based on Ex-TFG in thin cladding fiber

Zhijun Yan, Zhongyuan Sun, Kaiming Zhou, Binbin Luo, Jianfeng Li, Hushan Wang, Yishan Wang, Wei Zhao, Lin Zhang

Aston Institute of Photonic Technologies (AiPT)

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

Abstract

We report a highly sensitive refractive index (RI) sensor in the aqueous solution, which is based on an 81°-tilted fiber grating structure inscribed into a thin cladding fiber with 40 μm cladding radius. The numerical analysis has indicated that the RI sensitivity of cladding resonance mode of the grating can be significantly enhanced with reducing cladding size. This has been proved by the experimental results as the RI sensitivities of TM and TE resonance peaks in the index region of 1.345 have been increased to 1180 nm/RIU and 1150 nm/RIU, respectively, from only 200 and 170 nm/RIU for the same grating structure inscribed in standard telecom fiber with 62.5-μm cladding radius. Although the temperature sensitivity has also increased, the change in temperature sensitivity is still insignificant in comparison with RI sensitivity enhancement.

Original language	English
Pages (from-to)	3023-3027
Number of pages	5
Journal	Journal of Lightwave Technology
Volume	33
Issue number	14
Early online date	20 Apr 2015
DOIs	https://doi.org/10.1109/JLT.2015.2422076
Publication status	Published - 20 Apr 2015

Bibliographical note

© 2015 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: European Union 7th Framework Programme [FP7/2007−2013] under Grant 295208.

Keywords

refractive index sensing
sensitivity
tilted fiber grating

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10.1109/JLT.2015.2422076

Sensitivity-enhanced RI sensor based on Ex-TFG in thin cladding fiber
© 2015 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.
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http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7089159

Cite this

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abstract = "We report a highly sensitive refractive index (RI) sensor in the aqueous solution, which is based on an 81°-tilted fiber grating structure inscribed into a thin cladding fiber with 40 μm cladding radius. The numerical analysis has indicated that the RI sensitivity of cladding resonance mode of the grating can be significantly enhanced with reducing cladding size. This has been proved by the experimental results as the RI sensitivities of TM and TE resonance peaks in the index region of 1.345 have been increased to 1180 nm/RIU and 1150 nm/RIU, respectively, from only 200 and 170 nm/RIU for the same grating structure inscribed in standard telecom fiber with 62.5-μm cladding radius. Although the temperature sensitivity has also increased, the change in temperature sensitivity is still insignificant in comparison with RI sensitivity enhancement.",

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AU - Li, Jianfeng

AU - Wang, Hushan

AU - Wang, Yishan

AU - Zhao, Wei

AU - Zhang, Lin

N1 - © 2015 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: European Union 7th Framework Programme [FP7/2007−2013] under Grant 295208.

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Numerical and experimental analysis of sensitivity-enhanced RI sensor based on Ex-TFG in thin cladding fiber

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