Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/126415
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Type: Conference paper
Title: Multi-point optical fiber pressure sensor
Author: Nguyen, L.
Schartner, E.
Otten, D.
Yu, Z.
Lancaster, D.
Ebendorff-Heidepriem, H.
Warren-Smith, S.
Citation: Proceedings of the Australia and New Zealand Conference on Optics and Photonics (ANZCOP 2019), as published in Proceedings of SPIE - AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019, 2019 / vol.11200, pp.112000X-1-112000X-2
Publisher: SPIE
Publisher Place: Bellingham, Washington
Issue Date: 2019
Series/Report no.: Proceedings of SPIE; 11200
ISBN: 1510631402
9781510631403
ISSN: 0277-786X
1996-756X
Conference Name: Australia and New Zealand Conference on Optics and Photonics (ANZCOP) (08 Dec 2019 - 12 Dec 2019 : Melbourne, Australia)
Statement of
Responsibility: 
Linh V. Nguyen, Erik P. Schartner, Dale Otten, Zheng Yu, David Lancaster, Heike Ebendorff- Heidepriem, and Stephen C. Warren-Smith
Abstract: This paper reports on a multi-point optical fiber pressure sensor using fiber Bragg gratings (FBGs) written on an exposed core optical fiber (ECF) by femtosecond laser. The pressure sensing elements were constructed as Fabry-Perot (FP) interferometers of different cavity lengths using pairs of FBGs with identical resonant wavelength. In this fashion an interference pattern was formed within the FBG bandwidth with much narrower fringes, leading to better detection limit. Fast Fourier transform (FFT) was used to calculate the phase change of the FP interference pattern with respect to applied pressure. The pressure sensitivity was proportional to the cavity FP cavity length, and reached -0.672 rad/MPa for the case of FP with 9 mm cavity length. The proposed sensor has potential to measure pressure at very high temperature thanks to its single material configuration.
Keywords: Fiber Bragg gratings; optical fiber sensor; pressure sensing; high temperature
Description: Conference 11200 - AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019
Rights: © 2019 SPIE
RMID: 1000014895
DOI: 10.1117/12.2541295
Grant ID: http://purl.org/au-research/grants/arc/CE140100003
http://purl.org/au-research/grants/arc/LP150100657
Published version: https://www.spiedigitallibrary.org/conference-proceedings-of-SPIE/11200.toc
Appears in Collections:IPAS publications

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