Theoretical Analysis of pi-Phase-Shifted Fiber Bragg Grating for Longitudinal Ultrasonic Acoustic Wave
Krishna Mohan Dwivedi , Sunil K Khijwania , Gaurav Trivedi , Tomasz Osuch
This paper presents a detailed theoretical analysis of pi-phase-shifted fiber Bragg grating (π-FBG) for longitudinal ultrasonic (US) acoustic stain wave. The influence of grating controlling parameters (grating length, index change, and apodization), and US acoustic wavelengths on the wavelength-shift sensitivity of the π-FBG has been investigated. The effect of the slow-light in the π-FBG acoustic sensor has also been discussed. Simulation results show that apodization reduces the sensitivity of the π-FBG acoustic sensor. Coupled mode theory (CMT) and transfer matrix method (TMM) have been employed to simulate the spectral characteristics of π-FBG.
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|Book||Proceedings of Workshop on Recent Advances in Photonics (WRAP), 2020, Institute of Electrical and Electronics Engineers, ISBN 978-1-7281-4750-5, [ Electronic ISBN: 978-1-7281-4749-9 ], DOI:10.1109/WRAP47485.2019.9013692|
|Score||= 20.0, 27-08-2020, ChapterFromConference|
|Publication indicators||= 1|
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