Prof. Yojiro Mori Profile

Prof. Yojiro Mori

at Toyota Technological Institute

SPIE Involvement:

Author

Publications (17)

Proceedings Article | 8 March 2024 Presentation + Paper

Robustness of digital subcarrier multiplexing systems to laser phase noise and chromatic dispersion

Kazato Satake, Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa

Proceedings Volume 12894, 1289403 (2024) https://doi.org/10.1117/12.3002195

KEYWORDS: Dispersion, Multiplexing, Phase shift keying, Modulation, Digital signal processing, Simulations, Optical transmission, Interference (communication), Tolerancing, Receivers

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Proceedings Article | 15 March 2023 Presentation + Paper

Optical path management based on machine learning for optical networks

R. Shiraki, Y. Mori, H. Hasegawa

Proceedings Volume 12429, 124290M (2023) https://doi.org/10.1117/12.2649581

KEYWORDS: Digital signal processing, Optical networks, Optical amplifiers, Optical transmission, Modulation, Machine learning, Systems modeling, Wavelength division multiplexing, Optical filters

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Proceedings Article | 4 March 2022 Presentation + Paper

Measurement method of transmitter IQ imbalance in digital coherent communication systems

Naoki Tsuchida, Takuma Kuno, Yojiro Mori, Hiroshi Hasegawa

Proceedings Volume 12027, 1202708 (2022) https://doi.org/10.1117/12.2609376

KEYWORDS: Transmitters, Digital signal processing, Filtering (signal processing), Receivers, Optical filters, Modulation, Picosecond phenomena, Phase shift keying, Finite impulse response filters, Polarization

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Proceedings Article | 5 March 2021 Presentation + Paper

Evaluation of low-complexity digital coherent receivers for short-reach transmission systems

Takuma Kuno, Yojiro Mori, Hiroshi Hasegawa

Proceedings Volume 11712, 117120C (2021) https://doi.org/10.1117/12.2577542

KEYWORDS: Digital signal processing, Receivers, Quadrature amplitude modulation, Finite impulse response filters, Transmitters, Phase shift keying, Device simulation, Demodulation, Clouds

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Proceedings Article | 31 January 2020 Paper

Highly spectrally efficient metro networks that adopt fiber-level granular routing on overlaid line-/ring-shaped virtual topologies

Ryuta Shiraki, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Paolo Monti

Proceedings Volume 11308, 1130809 (2020) https://doi.org/10.1117/12.2545553

KEYWORDS: Optical fibers, Wavelength division multiplexing, Network architectures, Switches, Dense wavelength division multiplexing, Wavelength division multiplexing networks, Numerical simulations, Optical filters, Receivers, Modulation

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Proceedings Article | 31 January 2020 Paper

Quasi-Nyquist WDM networks using receiver-side quadrature duo-binary/quaternary spectrum shaping

Kazuya Okamura, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

Proceedings Volume 11308, 113080E (2020) https://doi.org/10.1117/12.2544195

KEYWORDS: Digital filtering, Wavelength division multiplexing, Wavelength division multiplexing networks, Receivers, Signal to noise ratio, Optical filters, Signal processing, Optical networks

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Proceedings Article | 1 February 2019 Presentation + Paper

Novel network architecture enabling quasi-Nyquist wavelength-division multiplexing

Ryuta Shiraki, Shuhei Yamaoka, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

Proceedings Volume 10946, 109460C (2019) https://doi.org/10.1117/12.2507449

KEYWORDS: Wavelength division multiplexing, Signal processing, Network architectures, Wavelength division multiplexing networks, Computer simulations, Optical filters, Continuous wave operation, Tunable lasers

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Proceedings Article | 30 January 2018 Paper

Demonstration of 153.6-Tbps throughput from 1,536x1,536 optical switch with uniform-loss and cyclic-frequency AWGs

Hiroki Nagai, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

Proceedings Volume 10560, 105600P (2018) https://doi.org/10.1117/12.2288268

KEYWORDS: Switches, Optical switching, Optical amplifiers, Signal attenuation, Transmitters, Photonic integrated circuits, Modulation, Modulators, Switching, Signal detection

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Proceedings Article | 30 January 2018 Paper

Large-scale optical node architecture enabling spectral-efficiency maximization in ultra-dense WDM networks

Shuhei Yamaoka, Ryota Hashimoto, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

Proceedings Volume 10560, 105600G (2018) https://doi.org/10.1117/12.2288270

KEYWORDS: Signal attenuation, Modulation, Wavelength division multiplexing networks, Wavelength division multiplexing, Single mode fibers, Optical amplifiers, Optical filters, Computer simulations, Forward error correction, Switches

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Proceedings Article | 28 January 2017 Paper

Impairment mitigation in noncoherent optical transmission enabled with machine learning for intra-datacenter networks

Keisuke Ito, Masaki Niwa, Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

Proceedings Volume 10131, 101310A (2017) https://doi.org/10.1117/12.2253456

KEYWORDS: Dispersion, Machine learning, Modulation, Impairment mitigation, Transmittance, Tolerancing, Optical fibers, Digital signal processing, Signal detection, Receivers

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Proceedings Article | 28 January 2017 Paper

Network expansion strategy for elastic optical networks that considers channel capacity upgrades

Takuma Yasuda, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

Proceedings Volume 10129, 1012909 (2017) https://doi.org/10.1117/12.2250489

KEYWORDS: Algorithm development, Optical networks, Optical fibers, Network architectures, Channel projecting optics, Modulation, Transponders, Orthogonal frequency division multiplexing, Electrical engineering, Computer science

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Proceedings Article | 7 March 2016 Paper

Demonstration of 720x720 optical fast circuit switch for intra-datacenter networks

Koh Ueda, Yojiro Mori, Hiroshi Hasegawa, Hiroyuki Matsuura, Kiyo Ishii, Haruhiko Kuwatsuka, Shu Namiki, Ken-ichi Sato

Proceedings Volume 9775, 97750J (2016) https://doi.org/10.1117/12.2211998

KEYWORDS: Optical switching, Switches, Switching, Integrated optics, Optical circuits, Optical amplifiers, Laser development, Network architectures, Circuit switching, Optical networks, Tunable lasers, Fiber amplifiers, Signal attenuation

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Proceedings Article | 13 February 2016 Paper

Real-time optical path control method that utilizes multiple support vector machines for traffic prediction

Hiroshi Kawase, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

Proceedings Volume 9773, 97730I (2016) https://doi.org/10.1117/12.2209463

KEYWORDS: Machine learning, Optical communications, Optical networks, Data processing, Statistical analysis, Relays, Artificial neural networks, Current controlled current source, Explosives

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Proceedings Article | 13 February 2016 Paper

Architecture and design of optical path networks utilizing waveband virtual links

Yusaku Ito, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

Proceedings Volume 9773, 97730J (2016) https://doi.org/10.1117/12.2209466

KEYWORDS: Network architectures, Optical networks, Optical design, Optical network architecture, Switching, Channel projecting optics, Optical filters, Stereolithography, Modulation, Computer architecture

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Proceedings Article | 7 February 2015 Paper

A novel optical path routing network that combines coarse granularity optical multicast with fine granularity add/drop and block

Mauro Soares, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato

Proceedings Volume 9388, 93880O (2015) https://doi.org/10.1117/12.2078561

KEYWORDS: Optical networks, Switches, Optical switching, Network architectures, Algorithm development, Singular optics, Photonic integrated circuits, Switching, Video, Electrical engineering

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Proceedings Article | 7 February 2015 Paper

Wavelength-tunable filter utilizing non-cyclic arrayed waveguide grating to create colorless, directionless, contentionless ROADMs

Masaki Niwa, Shoichi Takashina, Yojiro Mori, Hiroshi Hasegawa, Ken-ichi Sato, Toshio Watanabe

Proceedings Volume 9388, 938807 (2015) https://doi.org/10.1117/12.2078522

KEYWORDS: Tunable filters, Switches, Receivers, Channel projecting optics, Photonic integrated circuits, Optical filters, Signal attenuation, Prototyping, Photodetectors, Optical amplifiers

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Proceedings Article | 1 February 2014 Paper

Photonic networks that exploit digital coherent technologies

Yojiro Mori, Ken-ichi Sato

Proceedings Volume 9008, 900802 (2014) https://doi.org/10.1117/12.2038657

KEYWORDS: Optical filters, Digital signal processing, Wavelength division multiplexing, Nonlinear optics, Signal processing, Modulation, Multiplexing, Computer simulations, Complex systems, Electronic filtering

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