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In this paper, we develop an efficient method for designing the geometry of dielectric strip plasmonic structures for future subwavelength waveguiding applications. Leveraging an efficient finite-difference field solver, we investigate the impact of dielectric strip geometry on propagation loss and spatial light confinement. We demonstrate that a dielectric strip embedded in a metallic medium can...
In this paper, we analyze the fundamental subwavelength modes in V-groove channel plasmon polariton (CPP) waveguides and their propagation properties using an improved full-vectorial finite difference frequency-domain technique (FDFD). We show that CPP propagation properties mainly depends on the groove angle rather than its depth.
We present an optical range resonator based on single mode metal-insulator-metal plasmonic gap waveguides. Near lossless transmission at 90deg bends enables us to design rectangular structures with cross-section area less than 500 nm2, which also leads to easing the fabrication process. The resonator exhibits a free spectral range of 270 nm. We show that a small bridge between the resonator and the...
We present a compact three-dimensional (3D) plasmonic Bragg reflector based on the metal-insulator-metal geometry. The Bragg reflector structure enables subwavelength confinement. We show that the width modulation in a plasmon slot waveguide can lead to wide photonic band-gaps with high reflectance efficiency. Simulation results demonstrate that negligible transmission can be achieved at the desired...
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