Dr. Masashi Usami Profile

Dr. Masashi Usami

Senior Manager at KDDI Research Inc

SPIE Involvement:

Author

Publications (6)

Proceedings Article | 3 October 2006 Paper

Numerical study of wavelength conversion of NRZ signal by SOA-MZI with bidirectional data injection

Kohsuke Nishimura, Takanori Ochiai, Masaharu Hattori, Masashi Usami

Proceedings Volume 6353, 635322 (2006) https://doi.org/10.1117/12.691572

KEYWORDS: Picosecond phenomena, Data conversion, Optical filters, Numerical simulations, Computer simulations, Phase shifts, Data modeling, Bandpass filters, Signal attenuation, Refractive index

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Proceedings Article | 28 January 2006 Paper

All-optical 3R regeneration using SOA-based polarization discriminating switch

R. Inohara, M. Usami, K. Nishimura

Proceedings Volume 6025, 602502 (2006) https://doi.org/10.1117/12.666982

KEYWORDS: Switches, Clocks, Dense wavelength division multiplexing, Optical amplifiers, Electronic filtering, Wavelength division multiplexing, Optical filters, Polarization, Filtering (signal processing), Receivers

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Proceedings Article | 8 December 2005 Paper

All-optical devices and signal processing for all photonic network

M. Usami, K. Nishimura, R. Inohara

Proceedings Volume 6021, 60210H (2005) https://doi.org/10.1117/12.637163

KEYWORDS: Absorption, Optical amplifiers, Nonlinear optics, Switches, Clocks, Wavelength division multiplexing, Modulation, Modulators, Polarization, Picosecond phenomena

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Proceedings Article | 25 October 2004 Paper

Optical wavelength conversion by electro-absorption modulators

Kohsuke Nishimura, Masashi Usami

Proceedings Volume 5595, (2004) https://doi.org/10.1117/12.571281

KEYWORDS: Absorption, Picosecond phenomena, Modulators, Data conversion, Modulation, Clocks, Nonlinear optics, Optical amplifiers, Phase shifts

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Proceedings Article | 14 August 2003 Paper

All-optical regeneration using SOA-based polarization-discriminated switch injected by transparent assist light

Masashi Usami, Munefumi Tsurusawa, Ryo Inohara, Kohsuke Nishimura

Proceedings Volume 5246, (2003) https://doi.org/10.1117/12.511959

KEYWORDS: Picosecond phenomena, Polarization, Clocks, Tolerancing, Switches, Modulation, Interferometers, Switching, Wavelength division multiplexing

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Proceedings Article | 29 March 2000 Paper

Highly reliable buried-stripe type 980-nm laser diodes for practical optical communications

Hideyoshi Horie, Hirotaka Ohta, Yoshitaka Yamamoto, Nobuhiro Arai, Brian Kelly, Toshinari Fujimori, Hideki Gotoh, Masashi Usami, Yuichi Matsushima

Proceedings Volume 3945, (2000) https://doi.org/10.1117/12.380545

KEYWORDS: Waveguides, Etching, Semiconductor lasers, Lithium, Reliability, Cladding, Gallium arsenide, Temperature metrology, Optical amplifiers, Optical communications

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Showing 5 of 6 publications

Conference Committee Involvement (2)

Optical Transmission Systems and Equipment for Networking VI

11 September 2007 | Boston, MA, United States

Optical Transmission Systems and Equipment for Networking V

2 October 2006 | Boston, Massachusetts, United States

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