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|Title:||The exploitation of thin film coatings for fibre sensors for the application of chemical sensing||Authors:||Kalli, Kyriacos
Webb, David J.
Allsop, Thomas D P
Neal, Ron M.
Davies, Edward M.
Rehman, Saeed Ur
Maier, Robert R J
Barton, James S.
Jones, Julian D C
|Keywords:||Thin films;Surface plasmon resonance;Silver;Silica;Palladium;Optical fibers||Category:||Electrical Engineering - Electronic Engineering - Information Engineering||Field:||Engineering and Technology||Issue Date:||13-Apr-2009||Publisher:||Spie Digital Library||Source:||The International Society for Optical Engineering, 7314, art. no. 731407; Photonics in the Transportation Industry: Auto to Aerospace II;13 -14 April 2009, Orlando, Florida||Conference:||The International Society for Optical Engineering||Abstract:||We report on the use of thin film coatings, both single and multi-layered, deposited on the flat side of a lapped, D-shaped fibre to enhance the sensitivity of two kinds of surface plasmon resonance based optical fibre sensors. The first kind involves the use of a tilted Bragg grating inscribed within the fibre core, prior to fibre coating, while the second relies on a surface relief grating photoinscribed after the fibre has been coated. Some of the devices operate in air with high coupling efficiency in excess of 40dB and an estimated index sensitivity of ΔλΔn = 90nm from 1 to 1.15 index range showing potential for gas sensing. Other sensors produced index sensitivities (ΔλΔn) ranging from 6790nm to 12500nm in the aqueous index regime. The materials used for these fibre optical devices are germanium, silica, silver, gold and palladium.||ISBN:||978-081947580-0||ISSN:||0277-786X||DOI:||10.1117/12.821112||Rights:||© 2009 SPIE.||Type:||Conference Papers|
|Appears in Collections:||Δημοσιεύσεις σε συνέδρια/Conference papers|
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