Thermo-optic control of dielectric-loaded plasmonic Mach-Zehnder interferometers and directional coupler switches - Archive ouverte HAL Access content directly
Journal Articles Nanotechnology Year : 2012

Thermo-optic control of dielectric-loaded plasmonic Mach-Zehnder interferometers and directional coupler switches

Abstract

We report detailed experimental studies of compact fiber-coupled dielectric-loaded plasmonic waveguide components-Mach-Zehnder interferometers (MZIs) and directional couplers (DCs)-whose operation at telecom wavelengths is controlled via the thermo-optic effect by electrically heating the gold stripe of dielectric-loaded plasmonic waveguides. The effect of the gaps isolating the heated part of the waveguide from the rest of the structure was examined showing the presence of a Fabry-Perot cavity in this MZI arm. Wavelength-dependent modulation is demonstrated with MZI-based components, and wavelength dependent low power (similar to 0.92 mW) rerouting is achieved with DC switches. Furthermore, simulations were performed to confirm the switching characteristics of the components.

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Dates and versions

hal-00769497 , version 1 (02-01-2013)

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Jacek Gosciniak, Laurent Markey, Alain Dereux, Sergey-I. Bozhevolnyi. Thermo-optic control of dielectric-loaded plasmonic Mach-Zehnder interferometers and directional coupler switches. Nanotechnology, 2012, 23, pp.444008. ⟨10.1088/0957-4484/23/44/444008⟩. ⟨hal-00769497⟩
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