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Low-loss fiber accessible plasmon waveguide for planar energy guiding and sensing

Maier, Stefan A. and Barclay, Paul E. and Johnson, Thomas J. and Friedman, Michelle D. and Painter, Oskar (2004) Low-loss fiber accessible plasmon waveguide for planar energy guiding and sensing. Applied Physics Letters, 84 (10). pp. 3990-3992. ISSN 0003-6951. http://resolver.caltech.edu/CaltechAUTHORS:MAIapl04

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Abstract

A metal nanoparticle plasmon waveguide for electromagnetic energy transport utilizing dispersion engineering to increase lateral energy confinement via a two-dimensional pattern of Au dots on an optically thin Si membrane is described. Using finite-difference time-domain simulations and coupled-mode theory, we show that phase-matched evanescent excitation from conventional fiber tapers is possible with efficiencies >90% for realistic geometries. Energy loss in this waveguide is mainly due to material absorption, allowing for 1/e energy decay distances of about 320 µm for excitation at telecommunication frequencies. This concept can be extended to the visible regime and promises applications in optical energy guiding, optical sensing, and switching.


Item Type:Article
Additional Information:©2004 American Institute of Physics. (Received 1 December 2003; accepted 22 March 2004; published online 3 May 2004)
Subject Keywords:gold; nanoparticles; finite difference time-domain analysis; optical planar waveguides
Record Number:CaltechAUTHORS:MAIapl04
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:MAIapl04
Alternative URL:http://dx.doi.org/10.1063/1.1753060
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2451
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:04 Apr 2006
Last Modified:26 Dec 2012 08:49

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