Excitation of surface plasmons using tilted planar-waveguide Bragg gratings

We present a planar integrated optical surface plasmon refractometer. The fabricated device operates by grating-matched coupling between a core waveguide mode and a set of hybrid plasmon-dielectric modes of a much wider integrated structure. The constructed device incorporates a 50 nm thin gold laye...

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Bibliographic Details
Main Authors: Holmes, C. (Author), Daly, K.R (Author), Sparrow, I.J.G (Author), Gates, J.C (Author), D'Alessandro, G. (Author), Smith, P.G.R (Author)
Format: Article
Language:English
Published: 2011-09.
Subjects:
Online Access:Get fulltext
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100 1 0 |a Holmes, C.  |e author 
700 1 0 |a Daly, K.R.  |e author 
700 1 0 |a Sparrow, I.J.G.  |e author 
700 1 0 |a Gates, J.C.  |e author 
700 1 0 |a D'Alessandro, G.  |e author 
700 1 0 |a Smith, P.G.R.  |e author 
245 0 0 |a Excitation of surface plasmons using tilted planar-waveguide Bragg gratings 
260 |c 2011-09. 
856 |z Get fulltext  |u https://eprints.soton.ac.uk/201077/1/05982073.pdf 
520 |a We present a planar integrated optical surface plasmon refractometer. The fabricated device operates by grating-matched coupling between a core waveguide mode and a set of hybrid plasmon-dielectric modes of a much wider integrated structure. The constructed device incorporates a 50 nm thin gold layer that separates a tilted planar-waveguide Bragg grating and a liquid analyte. It is demonstrated that polarization dependent plasmon anomalies occur in the transmission spectra of the device, which are understood using a numerical Cauchy integral mode solving approach. Sensitivities in this planar integrated device are comparable to existing fiber based plasmonic sensors, but with the advantages of planar integration and microfluidic adaptation. 
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655 7 |a Article