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Proceedings Paper

Grating coupler excitation of membrane supported long range surface plasmons
Author(s): Norman R. Fong; Pierre Berini; R. Niall Tait
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Paper Abstract

The design of gratings for broadside coupling of a Gaussian beam to a long-range surface plasmon polariton (LRSPP) waveguide is explored. The waveguide is a gold (Au) slab supported by a thin Cytop membrane bounded by air and forms a waveguide structure for potential use as a gas sensor. Grating coupler designs are proposed and modeled in two dimensions using the finite element method (FEM). A large design space of varying grating dimensions and input positions is examined and the resulting simulations predict an input coupling efficiency of approximately 29%. Fabrication of these gratings is also examined through standard optical lithography.

Paper Details

Date Published: 24 October 2012
PDF: 7 pages
Proc. SPIE 8412, Photonics North 2012, 841212 (24 October 2012); doi: 10.1117/12.2000466
Show Author Affiliations
Norman R. Fong, Carleton Univ. (Canada)
Pierre Berini, Univ. of Ottawa (Canada)
R. Niall Tait, Carleton Univ. (Canada)

Published in SPIE Proceedings Vol. 8412:
Photonics North 2012
Jean-Claude Kieffer, Editor(s)

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