Naoki Ikeda

TL;DR: In this article, a color filter comprising arrays of subwavelength holes in an aluminum film has been fabricated, which enables the excitation of visible-range surface plasmons due to its high plasma frequency.

TL;DR: A novel two-dimensional photonic-crystal based Symmetric Mach Zehnder type all-optical switch with InAs quantum dots acting as a nonlinear phase-shift source with a 15-ps-wide switching-window at sufficiently low optical-energy of ~100 fJ.

TL;DR: Straight single-line-defect photonic crystal waveguides on GaAs slabs with lengths of 1, 4, and 10 mm have been fabricated by controlling the Al content of a sacrificial AlGaAs clad layer and the wet etching duration to obtain a PC core layer with a very smooth surface.

TL;DR: In this article, three kinds of dielectric waveguide structures based on AlGaAs heterostructures, that is, semiconductor-clad, air-bridge, and oxide-clad structures, are investigated.

TL;DR: In this paper, a successively biaxially stretched polypropylene film obtained by successive bao-ial stretching method comprising extruding a melt of a β-crystal nucleating agent-containing poly-propylene-based resin composition from a T-die, cooling the extruded resin on a chill roll, and stretching the resulting web sheet longitudinally and then transversely, wherein the long-itudinally stretched sheet is made to have a degree of β -crystal orientation of less than 0.3 by the following method (I) and/or