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Journal of Nanophotonics • Open Access

Squeezing light into subwavelength metallic tapers: single mode matching method
Author(s): Qiao Min; Reuven Gordon

Paper Abstract

A simple single mode matching (SMM) method is proposed to analyze the optical throughput for subwavelength metal tapers. Both a 2D gold-clad taper gap and a 3D gold taper rod are analyzed with the SMM method. Including metal losses, these structures are calculated to have optimal squeezing taper angles of 14° with 71% efficiency and 32° with 44% efficiency, which is in good quantitative agreement with previous finite-difference time-domain simulations. The SMM method uses only analytic calculations and 2-by-2 matrix multiplication. Therefore, compared to past approaches, the SMM method is an efficient method to optimize the subwavelength metallic taper structures, while including losses, and it can be extended to more complex tapers and gratings in an obvious way. It also has the potential for fully analytic calculations.

Paper Details

Date Published: 1 July 2009
PDF: 12 pages
J. Nanophoton. 3(1) 033505 doi: 10.1117/1.3204944
Published in: Journal of Nanophotonics Volume 3, Issue 1
Show Author Affiliations
Qiao Min, Univ. of Victoria (Canada)
Reuven Gordon, Univ. of Victoria (Canada)

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