Proceedings ArticleDOI
Ultra-fast photonic crystal/quantum dot all-optical switch for future photonic networks
Hitoshi Nakamura,Yoshimasa Sugimoto,Kiyoshi Asakawa +2 more
- pp 1-2
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TLDR
In this article, a two-dimensional photonic-crystal based Symmetric Mach Zehnder type all-optical switch (PC-SMZ) with InAs quantum dots acting as a nonlinear phase shift source was demonstrated.Abstract:
We demonstrated a novel two-dimensional photonic-crystal based Symmetric Mach Zehnder type all-optical switch (PC-SMZ) with InAs quantum dots acting as a nonlinear phase-shift source. The 600-mum-long PC-SMZ exhibited a 15-ps-wide switching-window at sufficiently low optical-energy of ~100 fJ.read more
Citations
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Journal ArticleDOI
Slow light in photonic crystals
TL;DR: In this article, the background theory of slow light, as well as an overview of recent experimental demonstrations based on photonic-band engineering are reviewed, and practical issues related to real devices and their applications are also discussed.
Journal ArticleDOI
Enhanced fluorescence emission from quantum dots on a photonic crystal surface.
Nikhil Ganesh,Wei Zhang,Patrick C. Mathias,Edmond Chow,J. A. N. T. Soares,Viktor Malyarchuk,A. Smith,Brian T. Cunningham +7 more
TL;DR: Fluorescence intensity can be enhanced by a factor of up to 108 compared with quantum dots on an unpatterned surface by fabricating two-dimensional photonic crystal slabs that operate at visible wavelengths and engineering their leaky modes so that they overlap with the absorption and emission wavelengths.
Journal ArticleDOI
Photonic crystal and quantum dot technologies for all-optical switch and logic device
Kiyoshi Asakawa,Yoshimasa Sugimoto,Yoshimasa Sugimoto,Yoshinori Watanabe,Nobuhiko Ozaki,A. Mizutani,Yoshiaki Takata,Yoshinori Kitagawa,Hiroshi Ishikawa,N. Ikeda,Koichi Awazu,Xiaomin Wang,Akira Watanabe,Shigeru Nakamura,Shunsuke Ohkouchi,Kuon Inoue,Martin Kristensen,Ole Sigmund,Peter Ingo Borel,Roel Baets +19 more
TL;DR: In this paper, a symmetrical Mach?Zehnder (SMZ) type, ultra-small and ultra-fast all-optical switch and logic device is presented.
Journal ArticleDOI
Compact Optical Switches and Modulators Based on Dispersion Engineered Photonic Crystals
Liam O'Faolain,Daryl M. Beggs,Thomas P. White,Tobias Kampfrath,Kobus Kuipers,Thomas F. Krauss +5 more
TL;DR: In this paper, slow-light photonic crystals were used to enhance optical switching and modulation in silicon, and an extinction ratio in excess of 15 dB was obtained over the entire 11nm bandwidth of the modulator.
Journal ArticleDOI
Observation of light-by-light polarization control and stabilization in optical fibre for telecommunication applications
TL;DR: Light-by-light polarization control via a nonlinear effect occurring in single mode optical fibre is experimentally demonstrated, confirming yet another fascinating possibility to all-optical control the light properties in optical fibre.
References
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Journal ArticleDOI
Photonic crystals: putting a new twist on light
TL;DR: In this article, the authors describe the photonic bandgap as a periodicity in dielectric constant, which can create a range of 'forbidden' frequencies called a photonic Bandgap.
Journal ArticleDOI
Ultra-fast photonic crystal/quantum dot alloptical switch for future photonic networks.
Hitoshi Nakamura,Yoshimasa Sugimoto,Kyozo Kanamoto,Naoki Ikeda,Yu Tanaka,Yusui Nakamura,Shunsuke Ohkouchi,Yoshinori Watanabe,Kuon Inoue,Hiroshi Ishikawa,Kiyoshi Asakawa +10 more
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.
Journal ArticleDOI
Fabrication and characterization of different types of two-dimensional AlGaAs photonic crystal slabs
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.
Journal ArticleDOI
Optical nonlinear properties of InAs quantum dots by means of transient absorption measurements
TL;DR: In this paper, the optical nonlinear properties of self-assembled InAs/GaAs quantum dots (QDs) were experimentally verified by means of transient absorption measurements, and the results are expected to experimentally verify that QDs show a delta-function-like density of states.
Journal ArticleDOI
Direct Observation of Growth Striations in a Liquid Encapusulated Czochralski GaP Crystal by Light Scattering Method
TL;DR: Growth striations in a liquid encapusulated Czochralski (LEC) GaP crystal doped with Te at the concentration of 6×1017 cm-3 was examined by the 90°angle light scattering method.