Excessively tilted fiber grating sensors

Abstract

The development of excessively tilted fiber gratings (Ex-TFGs) provides a new type of sensing device with high refractive index (RI) sensitivity, low thermal crosstalk and vector sensing property. Due to the asymmetric grating structure of Ex-TFG, the light in the core is coupled into high order forward-propagating cladding modes and split into two orthogonal polarization states, resulting in dual-peak resonances in the transmission spectrum. The Ex-TFG also exhibits a non-circularly symmetrical near field distribution, which endows an exceptional orientation sensing capability. Benefitting from the unique mode coupling behavior, Ex-TFGs have been studied and developed for many different sensing applications, such as polarization dependent torsion and loading sensors, vector accelerometer and magnetometer, and a variety of low thermal crosstalk bio/chemical sensors. This paper will review the recent study and development of Ex-TFGs in terms of mode coupling mechanism, fabrication method, transmission and sensor characteristics and the novel applications in sensing areas.

Publication DOI: https://doi.org/10.1109/JLT.2020.3048981
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Additional Information: © 2021 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.
Uncontrolled Keywords: Optical fiber grating,biosensing,mode coupling in excessively asymmetric structure,orientation sensing,refractive index sensing,Atomic and Molecular Physics, and Optics
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Related URLs: https://ieeexpl ... cument/9337919/ (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2021-06-15
Published Online Date: 2021-01-28
Accepted Date: 2021-01-01
Authors: Sun, Yuezhen
Yan, Zhijun
Zhou, Kaiming (ORCID Profile 0000-0002-6011-1912)
Luo, Bin-bin
Jiang, Biqiang
Mou, Chengbo
Sun, Qizhen
Zhang, Lin

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