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We propose a plasmonic refractive index-sensitive nanosensor based on the electromagnetically induced transparency (EIT) of waveguide resonator systems. The structure consists of one tooth-shaped cavity as well as the bus and stub metal-insulator-metal waveguides. By adjusting the structural geometry, it is demonstrated that the controllable transmission of EIT response can be obtained with the finite-difference-time-domain...
Plasmonic waveguides supporting gap surface plasmons (GSPs) localized in a dielectric spacer between metal films are investigated numerically and the waveguiding properties at telecommunication wavelengths are presented. Especially, we emphasize that the mode confinement can advantageously be controlled by the waveguide width and the dielectric spacer thickness and thus allows for straightforward...
We present an ultra-compact modulator with a length of 15 nm by utilizing the squeezing and tunneling ability of the Epsilon-Near-Zero metamaterial. The finite-different time-domain simulations show the insertion loss is roughly −0.27 dB while the 3-dB extinction ratio is obtained with a 0.8 V gate voltage. The device's footprint is as small as 0.01 µm2. This modulator consumes low power and can potentially...
We present a new implementation of the eigenmode expansion technique for modeling Kerr-nonlinear waveguide structures. The formulation uses numerically stable scattering matrices and a perturbation approach based on the rigorous coupled-mode theory.
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