Showing papers in "Journal of the Optical Society of America in 2011"
Journal Article•
TL;DR: In this paper, the two rows of air holes at the two sides of the line defect are infiltrated with dielectric materials, which exhibits an ultralow high-order dispersion photonic band.
Abstract: We propose a two-dimensional photonic crystal line-defect waveguide, in which the two rows of air holes at the two sides of the line defect are infiltrated with dielectric materials. This waveguide exhibits an ultralow high-order-dispersion photonic band. Finite-difference time-domain simulation shows that ultralow high-order dispersion makes an ultrashort Gaussian pulse with width of 0.711 ps or even shorter, to 0.267 ps, propagate without observable pulse broadening and amplitude decrease in a 96 μm long waveguide. The slow light with group velocity of 0.0239 c in a very wide bandwidth of 1.876 THz can theoretically propagate as far as 711 μm with tolerable spread.
18 citations
Journal Article•
TL;DR: In this paper, the authors investigate the design of metamaterial blueprints for impedance-matched (reflectionless) absorbers over nonplanar surfaces in connection with optical pseudo black holes.
Abstract: We investigate the design of metamaterial blueprints for impedance-matched (reflectionless) absorbers over nonplanar surfaces in connection with optical pseudo black holes. The presence of some fundamental constraints on the existence of reflectionless absorber media at nonplanar surfaces are discussed based on analytical properties of the associated constitutive tensors on the complex ω (angular frequency) plane. In view of such constraints, some new metamaterial blueprints of near-reflectionless absorbers are suggested for integration into optical pseudo black hole devices.
8 citations