475 research outputs found
A Novel Photonic Material for Designing Arbitrarily Shaped Waveguides in Two Dimensions
We investigate numerically optical properties of novel two-dimensional
photonic materials where parallel dielectric rods are randomly placed with the
restriction that the distance between rods is larger than a certain value. A
large complete photonic gap (PG) is found when rods have sufficient density and
dielectric contrast. Our result shows that neither long-range nor short-range
order is an essential prerequisite to the formation of PGs. A universal
principle is proposed for designing arbitrarily shaped waveguides, where
waveguides are fenced with side walls of periodic rods and surrounded by the
novel photonic materials. We observe highly efficient transmission of light for
various waveguides. Due to structural uniformity, the novel photonic materials
are best suited for filling up the outer region of waveguides of arbitrary
shape and dimension comparable with the wavelength.Comment: 4 figure
Astroglial filament and fibroblast intermediate filament proteins in cytoskeletal preparations from spinal cord and optic nerve
Photonic material for designing arbitrarily shaped mirrors and microcavities in two dimensions
Effect of Fabricating Process on Notch Toughness of Shipbuilding Steel Plates (Report I) : Effect of Line-Heating on Notch Toughness of 50 kg/mm^2-Class High-Tensile Steel Plates
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