Journal
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
Volume 4, Issue 10, Pages 277-279Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssr.201004220
Keywords
plasmonics; subwavelength optics; waveguides; taper
Funding
- Australian Research Council
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We consider propagation of surface plasmon polaritons in two-dimensional tapered slot waveguides. We derive an analytical formula for the change of the amplitude of a plasmon mode due to tapering. We show that the taper leads to the field enhancement effectively compensating the mode attenuation due to losses. We obtain numerically the shape of the optimal function of the taper that provides exact loss compensation. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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