Prof. Ryushi Fujimura Profile

Prof. Ryushi Fujimura

Associate Professor at Utsunomiya Univ

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Author

Publications (11)

Proceedings Article | 13 March 2024 Presentation

Shift multiplexing surface holographic data storage

Soki Hirayama, Ryushi Fujimura, Yoshito Tanaka, Tsutomu Shimura

Proceedings Volume 12909, 1290905 (2024) https://doi.org/10.1117/12.3008443

KEYWORDS: Multiplexing, Holography, Data storage, Holograms, 3D image reconstruction, Signal to noise ratio, Optical discs, Interference (communication), Diffraction limit, Diffraction

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Proceedings Article | 20 September 2023 Paper

Deep learning-based super-resolution holographic data storage

Jianying Hao, Xiao Lin, Ryushi Fujimura, Soki Hirayama, Yoshito Tanaka, Xiaodi Tan, Tsutomu Shimura

Proceedings Volume 12606, 126060X (2023) https://doi.org/10.1117/12.3008355

KEYWORDS: Education and training, Holography, Data storage, Super resolution, Neural networks, Holograms, Tunable filters, Spatial light modulators, Holographic data storage systems, Deep learning

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Proceedings Article | 14 March 2023 Presentation

Numerical investigation of the storage density in multi-valued holographic data storage systems (Conference Presentation)

Ryushi Fujimura, Tsutomu Shimura

Proceedings Volume PC12444, PC1244402 (2023) https://doi.org/10.1117/12.2655920

KEYWORDS: Holographic data storage systems, Interference (communication), Data storage, Optical storage, Optical simulations, Numerical simulations, Image quality, Holography, Holograms, Binary data

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Proceedings Article | 9 March 2022 Presentation

Single shot detection of phase-modulated signals by using inter-pixel crosstalk

Ryushi Fujimura, Michito Tokoro

Proceedings Volume PC12025, PC1202501 (2022) https://doi.org/10.1117/12.2612437

KEYWORDS: Signal detection, Holographic data storage systems, Data storage, Machine learning, Linear filtering, Image storage, Image acquisition

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Proceedings Article | 10 October 2020 Presentation

Polychromatic reconstruction for phase-encoded holographic data storage

Ryushi Fujimura

Proceedings Volume 11551, 115510N (2020) https://doi.org/10.1117/12.2573990

KEYWORDS: Data storage, Holography, Signal detection, Holographic data storage systems, Tolerancing, 3D image reconstruction, Volume holography, Holograms, Temperature metrology, Interferometry

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Proceedings Article | 4 March 2019 Presentation

Single-shot signal detection in phase-encoded holographic data storage (Conference Presentation)

Ryushi Fujimura, Yuki Kunii, Tsutomu Shimura

Proceedings Volume 10943, 1094304 (2019) https://doi.org/10.1117/12.2515392

KEYWORDS: Data storage, Signal detection, Holography, Imaging devices, Image acquisition, Holographic data storage systems, Image storage, Linear filtering, Image filtering, Image transmission

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Proceedings Article | 2 November 2016 Presentation

Modeling of grating formation in photopolymer that does not need scheduling (Conference Presentation)

Tsutomu Shimura, Yuki Takeda, Masao Endo, Shinsuke Umegaki, Ryushi Fujimura

Proceedings Volume 9959, 99590A (2016) https://doi.org/10.1117/12.2240263

KEYWORDS: Holography, Polymers, Molecules, Multiplexing, Optical storage, Current controlled current source

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Proceedings Article | 8 September 2010 Paper

Signal-to-noise ratio calculation with statistical method in collinear holographic memory

Tsutomu Shimura, Junichiro Tottori, Ryushi Fujimura, Kazuo Kuroda

Proceedings Volume 7797, 77970I (2010) https://doi.org/10.1117/12.860487

KEYWORDS: Signal to noise ratio, Holography, Holograms, Diffraction, Spatial light modulators, Statistical methods, Monte Carlo methods, Multiplexing, Imaging systems, Stochastic processes

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Proceedings Article | 8 September 2006 Paper

Collinear technology for holographic versatile disc (HVD) system

Xiaodi Tan, Hideyoshi Horimai, Tsutomu Shimura, Shotaro Ichimura, Ryushi Fujimura, Kazuo Kuroda

Proceedings Volume 6343, 63432W (2006) https://doi.org/10.1117/12.707723

KEYWORDS: Holography, Holograms, Digital video discs, Servomechanisms, Image processing, Mirrors, Reflectivity, Objectives, 3D image reconstruction, Spatial light modulators

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Proceedings Article | 22 June 2006 Paper

Shift selectivity of the collinear holographic storage system

Tsutomu Shimura, Shotaro Ichimura, Yasushi Ashizuka, Ryushi Fujimura, Kazuo Kuroda, Xiaodi Tan, Hideyoshi Horimai

Proceedings Volume 6282, 62820S (2006) https://doi.org/10.1117/12.685218

KEYWORDS: Holography, Spatial light modulators, Data modeling, Mirrors, Detector arrays, Phase shifts, Numerical simulations, Image acquisition, Solids, Einsteinium

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Proceedings Article | 20 January 2005 Paper

Effect of dopants on the photorefractive effect in 0.91Pb(Zn1/3Nb2/3)O3-0.09PbTiO3

Tsutomu Shimura, Toshiyuki Fujisawa, Yasuhiro Satoh, Ryushi Fujimura, Katsuro Oda, Kazuo Kuroda

Proceedings Volume 5633, (2005) https://doi.org/10.1117/12.576477

KEYWORDS: Iron, Crystals, Rhodium, Photorefraction, Absorption, Manganese, Doping, Piezoelectric effects, Electro optics, Scattering

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Showing 5 of 11 publications

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