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Symmetric Mach-Zehnder structures based on photonic crystal slab waveguides were successfully fabricated. Several key points in designing this structure are discussed. Measured transmission spectrum gives great feasibility for realizing an ultra-small all-optical switch
Room temperature operation of lasing from optically-pumped InAs quantum dots embedded in a line defect waveguide in a two-dimensional air-bridge type GaAs-photonic crystal slab is demonstrated. The lasing is found to occur without Fabry-Perot mirrors, and also without any reflection at the sample edge. A distributed feedback mechanism at the band edge with a vanishingly-small group-velocity is responsible...
Simulation, fabrication, characterization of two-dimensional photonic crystals and fabrication of nanoprobe-assisted site-controlled quantum dots for large optical non-linearity are presented for photonic crystal and quantum dot-based ultra-small and ultra-fast all optical switches
Summary form only given. A two-dimensional (2D) photonic crystal is expected as one feasible candidate for future compact devices such as remarkably miniaturized planar photonic-circuits with active and passive components integrated. We report on characterization as a test device, of a 2D semiconductor (AlGaAs) photonic crystal equipped with two waveguides of narrow-width for coupling to input and...
Summary form only given. One of the distinctive features of two-(2D) and three-dimensional (3D) photonic crystals is that the energy-wavevector dispersions of the photonic bands are anomalous, other than the existence of the band gap. In this paper, we report on a finding that the phase-matching condition in second-harmonic generation (SHG) can be readily fulfilled in a 2D photonic crystal. An experiment...
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