Refractive index sensitivity enhancement of 81° tilted Bragg gratings by cladding etching


Poster: The properties of etched large angle tilted gratings (81o) are investigated. The attenuation peaks of the modes are found to shift to shorter wavelengths at a rate of ∼5nm/min in a solution of 10% HF acid. The most sensitive modes are examined for different etching times creating the relationship that longer etching times results in an increase in overall sensitivity. Comparing the sensitivity of the tilted fibre grating, etched for 6 hours, 506.9nm/unri and the most sensitive LPG, period 164μm, 389.2nm/unri in the RI range 1.30-1.40 shows that the produced tilted grating is more sensitive than the LPG and in this range would ideally be suited for the used in Bio-sensing applications.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: Edward Davies; Pouneh Saffari; Chengbo Mou; Kaiming Zou and Lin Zhang; "Refractive index sensitivity enhancement of 81° tilted Bragg gratings by cladding etching", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75036X (October 05, 2009). Copyright 2009 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print 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. DOI:
Event Title: 20th International Conference on Optical Fibre Sensors
Event Type: Other
Event Dates: 2009-10-05 - 2009-10-09
Uncontrolled Keywords: Applied Mathematics,Computer Science Applications,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Condensed Matter Physics
ISBN: 978-0-8194-7814-6
Last Modified: 03 Jun 2024 07:59
Date Deposited: 27 Jun 2017 14:35
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2009-10-05
Authors: Davies, Edward
Saffari, Pouneh
Mou, Chengbo (ORCID Profile 0000-0001-6107-3439)
Zhou, Kaiming (ORCID Profile 0000-0002-6011-1912)
Zhang, Lin (ORCID Profile 0000-0002-1691-5577)



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