Liquid core fibre Bragg grating based refractive index sensor formed by femtosecond assisted chemical etching technique


We report the fabrication of a refractive index (RI) sensor based on a liquid core fibre Bragg grating (FBG). A micro-slot FBG was created in standard telecom optical fibre employing the tightly focused femtosecond laser inscription aided chemical etching. A micro-slot with dimensions of 5.74(h) × 125(w) × 1388.72(l) μm was engraved across the whole fibre and along 1mm long FBG which gives advantage of a relatively robust liquid core waveguide. The device performed the refractive index sensitivity up to about 742.72 nm/RIU.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: P. Saffari ; Z. Yan ; K. Zhou ; L. Zhang and I. Bennion, "Liquid core fibre Bragg grating based refractive index sensor formed by femtosecond assisted chemical etching technique", 21st International Conference on Optical Fiber Sensors, eds. Wojtek J. Bock; Jacques Albert; Xiaoyi Bao, Proc. SPIE 7753, 77538P (2011). Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Event Title: 21st International Conference on Optical Fiber Sensors
Event Type: Other
Event Dates: 2011-05-15 - 2011-05-19
Uncontrolled Keywords: chemical etching,femtosecond laser inscription,fibre Bragg grating,refractive index sensor,Applied Mathematics,Computer Science Applications,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Condensed Matter Physics
ISBN: 978-0-8194-8246-4
Last Modified: 05 Jan 2024 08:26
Date Deposited: 31 Mar 2016 08:50
Full Text Link: http://proceedi ... ticleid=1347146
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2011-05-17
Authors: Saffari, P.
Yan, Z.
Zhou, K. (ORCID Profile 0000-0002-6011-1912)
Zhang, L. (ORCID Profile 0000-0002-1691-5577)
Bennion, I.



Version: Published Version

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