Mr. Keizo Inagaki Profile

Keizo Inagaki

Researcher at NICT

SPIE Involvement:

Author

Publications (16)

Proceedings Article | 24 January 2011 Paper

Convergence of broadcasting and communications utilizing CATV network

Kazuo Kumamoto, Hikaru Hoshino, Koji Yasukawa, Takeshi Higashino, Katsutoshi Tsukamoto, Shozo Komaki, Keizo Inagaki

Proceedings Volume 7958, 79580C (2011) https://doi.org/10.1117/12.878951

KEYWORDS: Radio over Fiber, Optical fibers, Amplifiers, Linear filtering, Antennas, Connectors, Telecommunications, Transmitters, Communication engineering, Data communications

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Proceedings Article | 24 January 2011 Paper

Performance analysis of IM/DD radio-on-fiber link for transmitting multicarrier RF signals

T. Higashino, S. Okumura, K. Tsukamoto, S. Komaki, K. Kumamoto, K. Yasukawa, K. Inagaki

Proceedings Volume 7958, 79580D (2011) https://doi.org/10.1117/12.878957

KEYWORDS: Radio over Fiber, Modulation, Distortion, Optical amplifiers, Signal detection, Communication engineering, Wireless communications, Transparency, Intermodulation, Antennas

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Proceedings Article | 16 May 2008 Paper

Improvement of accuracy of angular velocity detection in semiconductor fiber-optic ring laser gyroscope

Tomoki Ishida, Shuichi Tamura, Satoshi Sunada, Keizo Inagaki, Shigeru Saito, Takahisa Harayama

Proceedings Volume 7004, 700450 (2008) https://doi.org/10.1117/12.786142

KEYWORDS: Gyroscopes, Semiconductor lasers, Fiber optic gyroscopes, Optical fibers, Semiconductors, Fiber optics, Fiber lasers, Semiconductor optical amplifiers, Directional couplers

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Proceedings Article | 16 May 2008 Paper

Earth's rotation rate detection using an extremely large semiconductor fiber optic gyroscope extending over 10,000 m2

Keizo Inagaki, Shuichi Tamura, Tomoko Tanaka, Hiroyuki Noto, Takahisa Harayama

Proceedings Volume 7004, 70045F (2008) https://doi.org/10.1117/12.786329

KEYWORDS: Resonators, Fiber optic gyroscopes, Gyroscopes, Optical semiconductors, Semiconductors, Fiber optics, Optical fibers, Signal to noise ratio, Fiber lasers, Laser resonators

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Proceedings Article | 12 October 2007 Paper

Experimental investigation of Sagnac beat signals using semiconductor fiber-optic ring laser gyroscope (S-FOG) based on semiconductor optical amplifier (SOA)

Shuichi Tamura, Keizo Inagaki, Hiroyuki Noto, Takahisa Harayama

Proceedings Volume 6770, 677014 (2007) https://doi.org/10.1117/12.734200

KEYWORDS: Gyroscopes, Semiconductor lasers, Semiconductors, Fiber optic gyroscopes, Optical fibers, Laser resonators, Semiconductor optical amplifiers, Fiber optics, Directional couplers, Signal detection

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Proceedings Article | 22 April 1996 Paper

Ultrahigh-speed optical-beam steering by optical phased array antenna

Keizo Inagaki, Yoshio Karasawa

Proceedings Volume 2699, (1996) https://doi.org/10.1117/12.238413

KEYWORDS: Phased array optics, Antennas, Optical components, Beam steering, Integrated optics, Phased arrays, Free space optics, Phase shifts, Optical fibers, Active optics

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Proceedings Article | 22 April 1996 Paper

High-power Nd-doped double-clad fiber amplifier at 1.06 um

Tetsuya Miyazaki, Keizo Inagaki, Yoshio Karasawa, Minoru Yoshida

Proceedings Volume 2699, (1996) https://doi.org/10.1117/12.238416

KEYWORDS: Fiber amplifiers, Optical amplifiers, Cladding, Neodymium, High power fiber amplifiers, Receivers, Absorption, Single mode fibers, Mirrors, Telecommunications

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Proceedings Article | 22 April 1996 Paper

Global satellite communication network using double-layered inclined-orbit constellation with optical intersatellite links

Kazuhiro Kimura, Keizo Inagaki, Yoshio Karasawa

Proceedings Volume 2699, (1996) https://doi.org/10.1117/12.238421

KEYWORDS: Satellites, Satellite communications, Free space, Optical tracking, Chlorine, Radio optics, Optical communications, Free space optics, Data transmission, Telecommunications

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Proceedings Article | 20 April 1995 Paper

Satellite constellation of low-earth-orbit (LEO) satellite global communication network using optical intersatellite links

Kazuhiro Kimura, Keizo Inagaki, Yoshio Karasawa

Proceedings Volume 2381, (1995) https://doi.org/10.1117/12.207426

KEYWORDS: Satellites, Satellite communications, Free space, Optical communications, Telecommunications, Optical networks, Relays, Radio optics, Antennas, Data transmission

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Proceedings Article | 16 August 1994 Paper

Multigigabit optical transmission experiment through a free-space simulator

Tetsuya Miyazaki, Keizo Inagaki, Masayuki Fujise

Proceedings Volume 2123, (1994) https://doi.org/10.1117/12.184684

KEYWORDS: Modulation, Free space optics, Receivers, Optical antennas, Transmittance, Transmitters, Modulators, Satellites, Optical simulations, Fiber couplers

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Proceedings Article | 16 August 1994 Paper

High-speed tracking target simulator for fine tracking mechanisms

Keizo Inagaki, Tetsuya Miyazaki, Masayuki Fujise

Proceedings Volume 2123, (1994) https://doi.org/10.1117/12.184656

KEYWORDS: Collimation, Antennas, Transceivers, Optical tracking, Control systems, Satellites, Single mode fibers, Wavefront aberrations, Sensors, Charge-coupled devices

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Proceedings Article | 6 August 1993 Paper

Simplified gimbal design for LEO satellites tracking to a GEO satellite

Yoshinori Arimoto, Keizo Inagaki, Masayuki Fujise, Yoji Furuhama, Masao Inoue, Toshio Kashiwase

Proceedings Volume 1866, (1993) https://doi.org/10.1117/12.149241

KEYWORDS: Satellites, Optical tracking, Telescopes, Sensors, Mirrors, Control systems design, Reflectors, Optical antennas, Actuators, Optical instrument design

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Proceedings Article | 6 August 1993 Paper

Far-field pattern measurement of on-board laser communication equipment by free-space laser transmission simulator

Keizo Inagaki, Mitsuo Nohara, Yoshinori Arimoto, Masayuki Fujise, Yoji Furuhama, Seiji Kanda, Kenichi Araki

Proceedings Volume 1866, (1993) https://doi.org/10.1117/12.149258

KEYWORDS: Optical simulations, Antennas, Laser communications, Optical antennas, Free space optics, Near field optics, Imaging systems, Telecommunications, CCD cameras, Calibration

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Proceedings Article | 20 October 1992 Paper

Aspheric lens LD collimator for an optical intersatellite link

Mitsuo Nohara, Keizo Inagaki, Hideaki Koyanagi, Isao Ishibai

Proceedings Volume 1720, (1992) https://doi.org/10.1117/12.132181

KEYWORDS: Collimators, Aspheric lenses, Wavefront aberrations, Transmitters, Wavefronts, Beam shaping, Radio optics, Antennas, Relays, Surface roughness

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Proceedings Article | 1 June 1991 Paper

Free-space simulator for laser transmission

Keizo Inagaki, Mitsuo Nohara, Kenichi Araki, Masayuki Fujise, Yoji Furuhama

Proceedings Volume 1417, (1991) https://doi.org/10.1117/12.43750

KEYWORDS: Optical simulations, Beam controllers, Diffraction, Free space optics, Antennas, Optical antennas, Free space optical communications, Radio optics, Laser applications, Near field optics

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Proceedings Article | 1 July 1990 Paper

Design of compact transceiver optical systems for optical intersatellite links

Kenichi Araki, Keizo Inagaki, Koji Yasukawa

Proceedings Volume 1218, (1990) https://doi.org/10.1117/12.18185

KEYWORDS: Transceivers, Satellites, Beam controllers, Optical tracking, Control systems, Optical components, Sensors, Mirrors, Relays, Antennas

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Showing 5 of 16 publications

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