Passive and active plasmonic nanoarray devices

Petter Holmström; Jun Yuan; Min Qiu; Lars Thylén; Alexander M. Bratkovsky

doi:10.1117/12.890978

18 May 2011 Passive and active plasmonic nanoarray devices

Petter Holmström, Jun Yuan, Min Qiu, Lars Thylén, Alexander M. Bratkovsky

Proceedings Volume 8070, Metamaterials VI; 80700T (2011) https://doi.org/10.1117/12.890978
Event: SPIE Optics + Optoelectronics, 2011, Prague, Czech Republic

Abstract

Metal nanoparticle arrays offer the possibility to considerably surpass the optical field confinement of silicon waveguides. The properties of directional couplers composed of such plasmonic nanoarrays are analyzed theoretically, while neglecting material losses. It is found that it is possible to generate very compact, submicron length, high fieldconfinement and functionality devices with very low switch energies. We further perform a study of spatial losses in Ag nanoparticle arrays by obtaining the group velocity and the lifetime of the surface plasmon polaritons. The losses are determined for different host permittivities, polarizations, and for spherical and spheroidal particles, with a minimum loss of 12 dB/μm. The possibilities to compensate the losses using gain materials, and the added noise associated with that, is briefly discussed.

Citation Download Citation

Petter Holmström, Jun Yuan, Min Qiu, Lars Thylén, and Alexander M. Bratkovsky "Passive and active plasmonic nanoarray devices", Proc. SPIE 8070, Metamaterials VI, 80700T (18 May 2011); https://doi.org/10.1117/12.890978

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