Dr. Hiroshi Ishikawa Profile

Dr. Hiroshi Ishikawa

Senior Researcher at AIST

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Author

Publications (11)

Proceedings Article | 4 March 2013 Paper

Continuous-wave operation of green/yellow laser diodes based on BeZnCdSe quantum wells

R. Akimoto, T. Hasama, H. Ishikawa, J. Kasai, S. Fujisaki, S. Tanaka, S. Tsuji

Proceedings Volume 8640, 86400F (2013) https://doi.org/10.1117/12.2007351

KEYWORDS: Quantum wells, Semiconductor lasers, Continuous wave operation, Waveguides, Indium gallium nitride, Cadmium, Superlattices, Gallium arsenide, Crystals

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Proceedings Article | 5 February 2013 Paper

Energy consumption and traffic scaling of dynamic optical path networks

K. Ishii, J. Kurumida, S. Namiki, T. Hasama, H. Ishikawa

Proceedings Volume 8646, 86460A (2013) https://doi.org/10.1117/12.2003591

KEYWORDS: Optical switching, Optical fibers, Switches, Optical networks, Switching, Optical amplifiers, Energy efficiency, Integrated optics, Control systems, Network architectures

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Proceedings Article | 26 January 2009 Paper

Optical LAN technologies for the ultra-high definition video era

S. Namiki, H. Onaka, T. Ikeuchi, K. Oyamada, K. Morito, A. Sugitatsu, H. Ishikawa, T. Asami

Proceedings Volume 7235, 723505 (2009) https://doi.org/10.1117/12.816471

KEYWORDS: Local area networks, Video, Ultrafast phenomena, Integrated optics, Interfaces, Wavelength division multiplexing, Waveguides, Optical networks, Transceivers, Switching

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Proceedings Article | 18 November 2008 Paper

Ultrafast all-optical switching using intersubband transitions in InGaAs/AlAs/AlAsSb quantum wells

H. Ishikawa, R. Akimoto, G. W. Cong, M. Nagase, T. Mozume, C. Lim, S. Gozu, T. Hasama

Proceedings Volume 7135, 71350X (2008) https://doi.org/10.1117/12.803444

KEYWORDS: Phase shifts, Quantum wells, Absorption, Phase modulation, Ultrafast phenomena, Modulation, Switches, Signal attenuation, Refractive index, Control systems

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Proceedings Article | 17 September 2005 Paper

Ultra-fast and ultra-small photonic crystal/quantum dot all-optical switch for future photonic networks

Hitoshi Nakamura, Yoshimasa Sugimoto, Kyozo Kanamoto, Naoki Ikeda, Yu Tanaka, Yusui Nakamura, Shunsuke Ohkouchi, Kuon Inoue, Hiroshi Ishikawa, Kiyoshi Asakawa

Proceedings Volume 5926, 59260B (2005) https://doi.org/10.1117/12.619928

KEYWORDS: Phase shifts, Surface plasmons, Waveguides, Absorption, Switches, Photonic crystals, Switching, Picosecond phenomena, Indium arsenide, Nonlinear optics

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Proceedings Article | 31 January 2005 Paper

Ultrafast all-optical switches for OTDM systems

Hiroshi Ishikawa

Proceedings Volume 5624, (2005) https://doi.org/10.1117/12.579328

KEYWORDS: Switches, Quantum wells, Switching, Ultrafast phenomena, Absorption, Femtosecond phenomena, Quantum dots, Waveguides, Indium gallium arsenide, Wavelength division multiplexing

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Proceedings Article | 25 March 2004 Paper

Nanotechnologies of photonic crystals and quantum dots for ultrasmall and ultrafast all-optical switches

Kiyoshi Asakawa, Yoshimasa Sugimoto, H. Nakamura, Naoki Ikeda, Y. Tanaka, Y. Nakamura, S. Ohkouchi, Kozyo Kanamoto, Hiroshi Ishikawa, Y. Watanabe, K. Inoue, H. Sasaki, Koji Ishida

Proceedings Volume 5277, (2004) https://doi.org/10.1117/12.531187

KEYWORDS: Waveguides, Phase shifts, Transmittance, Indium arsenide, Nonlinear optics, Scanning electron microscopy, Photonic integrated circuits, Photography, Gallium arsenide, Photonic crystals

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Proceedings Article | 25 July 2003 Paper

Ultrafast gain and index in semiconductor optical amplifier: theory and experiment

Harm Dorren, Xuelin Yang, Daan Lenstra, H. de Waardt, Giok-Djan Khoe, Takasi Simoyama, Hiroshi Ishikawa, Hitoshi Kawashima, Toshifumi Hasama

Proceedings Volume 4986, (2003) https://doi.org/10.1117/12.482319

KEYWORDS: Ultrafast phenomena, Phase shifts, Picosecond phenomena, Semiconductor optical amplifiers, Absorption, Switching, Optical amplifiers, Refractive index, Polarization, Attenuators

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Proceedings Article | 11 July 2002 Paper

Application of photonic crystal defects in constructing all-optical switches, optical delay lines and low-cross-talk waveguide intersections for ultrashort optical pulses

Sheng Lan, Yoshimasa Sugimoto, Satoshi Nishikawa, Naoki Ikeda, Tao Yang, Kozyo Kanamoto, Hiroshi Ishikawa, Kiyoshi Asakawa

Proceedings Volume 4870, (2002) https://doi.org/10.1117/12.475549

KEYWORDS: Waveguides, Chemical species, Gallium arsenide, Ultrafast phenomena, Switching, Dielectrics, Switches, Dispersion, Molecules, Photonic crystals

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Proceedings Article | 14 May 2002 Paper

Large intersubband nonlinearity for all-optical switching at 1.72 micron in Sb-based quantum wells

A. Gopal, Haruhiko Yoshida, Arup Neogi, Teruo Mozume, Nikolai Georgiev, Takasi Simoyama, Osamu Wada, Hiroshi Ishikawa

Proceedings Volume 4638, (2002) https://doi.org/10.1117/12.467468

KEYWORDS: Absorption, Quantum wells, Switching, Switches, Shape analysis, Nonlinear optics, Semiconductors, Excitons, Solids, Continuous wave operation

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Proceedings Article | 9 July 2001 Paper

Wavelength conversion using four-wave mixing with two nondegenerated pumps in a wavelength-selectable laser

Takasi Simoyama, Haruhiko Kuwatsuka, Martin Bouda, Manabu Matsuda, Yuji Kotaki, Hiroshi Ishikawa

Proceedings Volume 4283, (2001) https://doi.org/10.1117/12.432612

KEYWORDS: Terahertz radiation, Brain-machine interfaces, Four wave mixing, Waveguides, Switching, Quantum wells, Semiconductor lasers, Fiber lasers, Semiconductors, Hole burning spectroscopy

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Showing 5 of 11 publications

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