Abstract
We demonstrate the use of organic nanofibers, composed of self-assembled organic molecules, as a dielectric medium for dielectric-loaded surface plasmon polariton waveguides at near-infrared wavelengths. We successfully exploit a metallic grating coupler to excite the waveguiding mode and characterize dispersion properties of such waveguides using leakage-radiation microscopy.
Highlights
Surface plasmon polaritons (SPPs), which are surface electromagnetic waves propagating along a metal-dielectric interface [1], have been attracting much efforts during the last decade due to their great potential for development of ultracompact photonic circuits and sensors [1,2,3,4]
We demonstrate the use of organic nanofibers, composed of self-assembled organic molecules, as a dielectric medium for dielectricloaded surface plasmon polariton waveguides at near-infrared wavelengths
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Summary
Surface plasmon polaritons (SPPs), which are surface electromagnetic waves propagating along a metal-dielectric interface [1], have been attracting much efforts during the last decade due to their great potential for development of ultracompact photonic circuits and sensors [1,2,3,4]. The resulting configuration, known as dielectric-loaded SPP waveguides (DLSPPWs) [10], has proved to be suitable for realization of passive and active plasmonic components [11,12,13,14]. A commonly used dielectric material for DLSPPWs is polymethyl-methacrylate (PMMA) naturally compatible with industrial fabrication using large-scale UV lithography and allowing integration with fiber optics [15]. PMMA has been widely used, since it is easy to operate with and one can modify its optical properties by embedding various molecules and nanocomposites. One can make the medium optically active, providing hereby possibilities to amplify the SPP mode [12, 16] or to introduce nonlinearity [17,18,19].
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