Mr. Hisao Nakashima Profile

Hisao Nakashima

at Fujitsu Limited

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Author

Publications (7)

Proceedings Article | 4 March 2022 Presentation + Paper

Accurate analysis and low-complexity compensation of transceiver nonlinear distortion for higher-order modulation

Hisao Nakashima, Naoya Okada, Yoshitaka Nomura, Taizo Maeda, Zhenning Tao, Takeshi Hoshida

Proceedings Volume 12027, 1202707 (2022) https://doi.org/10.1117/12.2609357

KEYWORDS: Nonlinear optics, Distortion, Modulation, Signal to noise ratio, Digital signal processing, Transmitters, Complex systems, Nonlinear filtering, Filtering (signal processing), Signal processing

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Proceedings Article | 11 May 2020 Paper

Calibration and monitoring of coherent optical transceiver imperfections

Yangyang Fan, Yufeng Jiang, Zhenning Tao, Hisao Nakashima, Takeshi Hoshida

Proceedings Volume 11309, 113090N (2020) https://doi.org/10.1117/12.2544691

KEYWORDS: Coherent optics, Transceivers, Calibration, Digital signal processing, Transmitters, Polarization

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Proceedings Article | 31 January 2020 Presentation + Paper

Polarization dependent loss mitigation technologies for digital coherent system

Guoxiu Huang, Hisao Nakashima, Yuichi Akiyama, Zhenning Tao, Takeshi Hoshida

Proceedings Volume 11308, 113080L (2020) https://doi.org/10.1117/12.2544576

KEYWORDS: Polarization, Signal to noise ratio, Digital signal processing, Transmittance, Multiplexing, Signal attenuation, Receivers, Binary data, Transmitters, Signal processing

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Proceedings Article | 7 February 2015 Paper

Nonlinear compensation technologies for future optical communication systems

Tomofumi Oyama, Takeshi Hoshida, Hisao Nakashima, Shoichiro Oda, Tomohiro Yamauchi, Takahito Tanimura, Liang Dou, Ying Zhao, Zhenning Tao, Jens Rasmussen

Proceedings Volume 9389, 93890I (2015) https://doi.org/10.1117/12.2077028

KEYWORDS: Personal protective equipment, Digital signal processing, Nonlinear optics, Complex systems, Telecommunications, Optical fiber cables, Optical communications, Transceivers, Modulation, Signal processing

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Proceedings Article | 5 February 2013 Paper

Complexity-reduced digital nonlinear compensation for coherent optical system

Zhenning Tao, Liang Dou, Weizhen Yan, Yangyang Fan, Lei Li, Shoichiro Oda, Yuichi Akiyama, Hisao Nakashima, Takeshi Hoshida, Jens Rasmussen

Proceedings Volume 8647, 86470K (2013) https://doi.org/10.1117/12.2002284

KEYWORDS: Polarization, Dispersion, Single mode fibers, Modulation, Optical filters, Transmitters, Nonlinear optics, Scanning probe microscopy, Coherent optics, Finite impulse response filters

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Proceedings Article | 25 January 2012 Paper

Digital nonlinear compensation techniques for high-speed DWDM transmission systems

Takeshi Hoshida, Liang Dou, Takahito Tanimura, Weizhen Yan, Shoichiro Oda, Lei Li, Hisao Nakashima, Meng Yan, Zhenning Tao, Jens Rasmussen

Proceedings Volume 8284, 82840P (2012) https://doi.org/10.1117/12.907842

KEYWORDS: Polarization, Digital signal processing, Modulation, Phase shift keying, Dense wavelength division multiplexing, Complex systems, Receivers, Transmitters, Single mode fibers, Nonlinear optics

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Proceedings Article | 25 January 2011 Open Access

Advances in coherent detection algorithms

Jens Rasmussen, Takeshi Hoshida, Takahito Tanimura, Hisao Nakashima, Shoichiro Oda, Zhenning Tao, Lei Li

Proceedings Volume 7960, 796002 (2011) https://doi.org/10.1117/12.881627

KEYWORDS: Polarization, Receivers, Phase shift keying, Modulation, Digital signal processing, Oscillators, Dispersion, Signal processing, Optical filters, Digital filtering

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