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We present a design methodology for optimized highly dispersive photonic crystal waveguide delay lines. The results indicate that higher group-indices lower the total propagation loss as long as perturbative backscattering is the dominant loss mechanism.
A slow group velocity photonic crystal slab waveguide is designed using capsule shaped air holes in hexagonal lattice. The presented design achieves nearly flat band waveguiding with group-index of 21-36 over the normalized bandwidth (Deltaomega/omega) of 1.38%~0.4%.
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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