Excessively tilted fiber grating sensors


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
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Uncontrolled Keywords: Optical fiber grating,biosensing,mode coupling in excessively asymmetric structure,orientation sensing,refractive index sensing,Atomic and Molecular Physics, and Optics
Publication ISSN: 0733-8724
Last Modified: 14 May 2024 07:21
Date Deposited: 04 Feb 2021 09:05
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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



Version: Accepted Version

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