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We report a holographic photopolymerization technique to fabricate a polymeric photonic bandgap structure whose period varies gradually in the lateral direction, leading to a unique rainbow-colored reflection image in the same viewing angle.
We report a holographic photopolymerization technique to fabricate a polymeric photonic bandgap structure whose period varies gradually along the length of the structure, leading to a unique rainbow-colored reflection image in the same viewing angle.
We report an extremely compact (30 ??m ?? 7 ??m) silicon-based 2-D thermo-optically tunable photonic crystal (PhC) lens operated at around telecommunication wavelength (1.55 ??m ) with transverse-magnetic-like polarization light. A honeycomb lattice array of high index silicon rods with 340 nm in thickness, 234 nm in diameter, and 338 nm in lattice constant were embedded in 3-??m-thick low index silicon...
We report extremely compact (30 ??m ?? 7 ??m) silicon based two-dimensional (2D) thermo-optically tunable photonic crystal lens which operates at around telecommunication wavelength (1.55 ??m) with transverse magnetic (TM) like polarized light. A 150 nm thick NiCr micro-heater was placed directly on top of the photonic crystal lens to provide localized heating. The focal length of the photonic crystal...
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