Prof. Neisei Hayashi Profile

Prof. Neisei Hayashi

Assistant Professor at Graduate School for the Creation of New Photonics Industries

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Author

Publications (25)

Proceedings Article | 11 August 2023 Poster + Paper

Experimental observation of distributed pulse wave velocity with a noncontact portable shearing-speckle interferometer

N. Hayashi, R. Hanayama, K. Ishii

Proceedings Volume 12622, 1262211 (2023) https://doi.org/10.1117/12.2672585

KEYWORDS: Blood circulation, Laser interferometry, Shearing interferometers, Medicine, Portability, Vibration, Velocity measurements, Prisms, Doppler effect, Measurement devices

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Proceedings Article | 1 April 2020 Presentation + Paper

Comprehensive ranging disambiguation for amplitude-modulated continuous-wave laser scanner

Chao Zhang, Sifan Liu, Zheyuan Zhang, Neisei Hayashi, Lei Jin, Sze Yun Set, Shinji Yamashita

Proceedings Volume 11352, 113521D (2020) https://doi.org/10.1117/12.2553482

KEYWORDS: Laser scanners, 3D metrology, Modulation, Ranging, Data processing, 3D scanning, Spatial resolution

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Proceedings Article | 2 March 2020 Presentation + Paper

Amplitude-modulated continuous-wave laser scanner employing adaptive gain control for avoidance of receiver saturation

Chao Zhang, Sifan Liu, Zheyuan Zhang, Fulin Xiang, Neisei Hayashi, Lei Jin, Sze Yun Set, Shinji Yamashita

Proceedings Volume 11287, 1128708 (2020) https://doi.org/10.1117/12.2543884

KEYWORDS: Laser scanners, Receivers, Continuous wave operation, 3D metrology, 3D scanning, Electro optics, Ceramics, Modulation, Inspection

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Proceedings Article | 12 November 2019 Paper

Recovery of defocused 3D data for focusing-optics-based amplitude-modulated continuous-wave laser scanner

Chao Zhang, Sifan Liu, Zheyuan Zhang, Fulin Xiang, Neisei Hayashi, Lei Jin, Sze Yun Set, Shinji Yamashita

Proceedings Volume 11197, 111970H (2019) https://doi.org/10.1117/12.2542489

KEYWORDS: Continuous wave operation, Laser scanners, 3D metrology, Manufacturing, 3D scanning, Laser optics, Optics manufacturing, Laser systems engineering, Optical scanning systems, Collimation

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Proceedings Article | 4 March 2019 Paper

Real-time strain measurement using slope-assisted Brillouin optical correlation-domain analysis with polarization maintaining fiber and its human interactive sound effecter application

N. Hayashi, Z. Chao, J. Lei, S. Y. Set, S. Yamashita

Proceedings Volume 10903, 109030O (2019) https://doi.org/10.1117/12.2508309

KEYWORDS: Polarization maintaining fibers, Polarization, Interference (communication), Scattering, Spatial resolution, Optical fibers, Picosecond phenomena, Modulation, Temperature metrology, Signal to noise ratio

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Proceedings Article | 4 March 2019 Presentation + Paper

Irradiation angle dependence and polarization dependence in 3D geometry measurement using AMCW LiDAR

Chao Zhang, Neisei Hayashi, Sze Yun Set, Shinji Yamashita

Proceedings Volume 10909, 109090W (2019) https://doi.org/10.1117/12.2507728

KEYWORDS: Polarization, 3D metrology, Laser scanners, LIDAR, Modulation, 3D scanning, Fourier transforms, Optical amplifiers, Phase measurement, Scattering

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Proceedings Article | 23 April 2017 Paper

Locally pressed plastic optical fibers for refractive index sensing

Shumpei Shimada, Heeyoung Lee, Makoto Shizuka, Hiroki Tanaka, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura

Proceedings Volume 10323, 1032358 (2017) https://doi.org/10.1117/12.2267461

KEYWORDS: Single mode fibers, Optical fibers, Silica, Polymer optical fibers, Refractive index, Ultrasonics, Phase only filters, Fiber optics sensors, Transducers, Sensors

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Proceedings Article | 23 April 2017 Paper

Characterization of depolarized GAWBS for optomechanical sensing of liquids outside standard fibers

Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura, Sze Yun Set, Shinji Yamashita

Proceedings Volume 10323, 103230M (2017) https://doi.org/10.1117/12.2262964

KEYWORDS: Acoustics, Optical fibers, Single mode fibers, Scattering, Silica, Refractive index, Liquids, Light scattering, Cladding, Sensors

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Proceedings Article | 23 April 2017 Paper

Plastic optical fiber fuse and its impact on sensing applications

Yosuke Mizuno, Heeyoung Lee, Neisei Hayashi, Kentaro Nakamura, Shin-ichi Todoroki

Proceedings Volume 10323, 103231D (2017) https://doi.org/10.1117/12.2272467

KEYWORDS: Polymer optical fibers, Optical fibers, Single mode fibers, Silica, Geometrical optics, Glasses, Plasma, Cladding, Optical amplifiers, Scattering

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Proceedings Article | 23 April 2017 Paper

Slope-assisted Brillouin optical correlation-domain reflectometry using high-loss plastic optical fibers

Heeyoung Lee, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura

Proceedings Volume 10323, 103238X (2017) https://doi.org/10.1117/12.2267462

KEYWORDS: Polymer optical fibers, Reflectometry, Fiber optics sensors, Optical fibers, Temperature metrology, Spatial resolution, Silica, Single mode fibers, Signal to noise ratio, Modulation

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Proceedings Article | 28 September 2015 Paper

Drastic sensitivity enhancement of temperature sensing based on modal interference in plastic optical fibers

G. Numata, N. Hayashi, M. Tabaru, Y. Mizuno, K. Nakamura

Proceedings Volume 9634, 96341R (2015) https://doi.org/10.1117/12.2194065

KEYWORDS: Polymer optical fibers, Silica, Single mode fibers, Temperature metrology, Temperature sensors, Polymers, Sensors, Multimode fibers, Polymeric sensors, Interfaces

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Proceedings Article | 28 September 2015 Paper

High-performance Brillouin optical correlation-domain reflectometry

Yosuke Mizuno, Neisei Hayashi, Hideyuki Fukuda, Kentaro Nakamura

Proceedings Volume 9634, 96342V (2015) https://doi.org/10.1117/12.2193559

KEYWORDS: Signal to noise ratio, Reflectometry, Spatial resolution, Sensors, Single mode fibers, Signal detection, Modulation, Microwave radiation, Silica, Signal processing

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Proceedings Article | 28 September 2015 Paper

Influence of polarization scrambling on Brillouin optical correlation-domain reflectometry using plastic fibers

Neisei Hayashi, Kazunari Minakawa, Yosuke Mizuno, Kentaro Nakamura

Proceedings Volume 9634, 96342Z (2015) https://doi.org/10.1117/12.2193758

KEYWORDS: Polarization, Spatial resolution, Polymer optical fibers, Optical fibers, Signal to noise ratio, Reflectometry, Silica, Sensors, Single mode fibers, Glasses

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Proceedings Article | 1 July 2015 Paper

Modal-interference-based temperature sensing using plastic optical fibers: markedly enhanced sensitivity near glass-transition temperature

Goki Numata, Neisei Hayashi, Marie Tabaru, Yosuke Mizuno, Kentaro Nakamura

Proceedings Volume 9655, 96552I (2015) https://doi.org/10.1117/12.2184389

KEYWORDS: Single mode fibers, Silica, Temperature metrology, Phase only filters, Polymer optical fibers, Polymers, Optical sensing, Temperature sensors, Multimode fibers, Sensors

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Proceedings Article | 1 July 2015 Paper

Simplified correlation-domain Brillouin sensor using plastic optical fiber

Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura

Proceedings Volume 9655, 965529 (2015) https://doi.org/10.1117/12.2182782

KEYWORDS: Phase only filters, Single mode fibers, Temperature metrology, Silica, Polymer optical fibers, Sensors, Interfaces, Optical fibers, Modulation, Reflectometry

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Proceedings Article | 2 June 2014 Paper

Distributed strain and temperature sensing based on Brillouin scattering in plastic optical fibers

Yosuke Mizuno, Neisei Hayashi, Kentaro Nakamura

Proceedings Volume 9157, 91573V (2014) https://doi.org/10.1117/12.2064890

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Proceedings Article | 2 June 2014 Paper

First observation of Brillouin scattering in tapered plastic optical fiber

Neisei Hayashi, Hideyuki Fukuda, Yosuke Mizuno, Kentaro Nakamura

Proceedings Volume 9157, 91575V (2014) https://doi.org/10.1117/12.2059069

KEYWORDS: Phase only filters, Scattering, Polymer optical fibers, Single mode fibers, Temperature metrology, Silica, Optical fibers, Laser scattering, Fiber optics, Sensors

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Proceedings Article | 2 June 2014 Paper

Evaluation of Brillouin frequency shift and its temperature dependence in poly(pentafluorostyrene)-based polymer optical fibers by ultrasonic pulse-echo technique

Kazunari Minakawa, Kotaro Koike, Neisei Hayashi, Yasuhiro Koike, Yosuke Mizuno, Kentaro Nakamura

Proceedings Volume 9157, 91579C (2014) https://doi.org/10.1117/12.2059434

KEYWORDS: Polymer optical fibers, Polymers, Ultrasonics, Acoustics, Refractive index, Scattering, Optical fibers, Single mode fibers, Temperature metrology, Glasses

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Proceedings Article | 2 June 2014 Paper

First observation of fiber fuse phenomenon in polymer optical fibers

Yosuke Mizuno, Neisei Hayashi, Hiroki Tanaka, Kentaro Nakamura, Shin-ichi Todoroki

Proceedings Volume 9157, 9157AI (2014) https://doi.org/10.1117/12.2058858

KEYWORDS: Polymer optical fibers, Single mode fibers, Silica, Optical fibers, Scattering, Glasses, Geometrical optics, Cladding, Refractive index, Optical amplifiers

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Proceedings Article | 15 October 2013 Paper

Enhancement of Brillouin scattering signal in pumped erbium-doped optical fiber

M. Ding, N. Hayashi, Y. Mizuno, K. Nakamura

Proceedings Volume 8924, 892405 (2013) https://doi.org/10.1117/12.2031311

KEYWORDS: Optical fibers, Scattering, Laser scattering, Fiber optics, Temperature metrology, Optical amplifiers, Wavelength division multiplexing, Signal attenuation, Fiber optics sensors, Polarization

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Proceedings Article | 20 May 2013 Paper

Observation and characterization of stimulated Brillouin gain spectra in plastic optical fibers

Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura

Proceedings Volume 8794, 879436 (2013) https://doi.org/10.1117/12.2025706

KEYWORDS: Polymer optical fibers, Optical fibers, Scattering, Sensors, Signal attenuation, Optical amplifiers, Spectrum analysis, Laser scattering, Glasses, Reflectometry

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Proceedings Article | 20 May 2013 Paper

Brillouin scattering properties in partially chlorinated plastic optical fibers estimated with ultrasonic pulse-echo technique

Kazunari Minakawa, Neisei Hayashi, Yosuke Mizuno, Kentaro Nakamura

Proceedings Volume 8794, 879439 (2013) https://doi.org/10.1117/12.2025821

KEYWORDS: Polymer optical fibers, Scattering, Ultrasonics, Temperature metrology, Acoustics, Single mode fibers, Velocity measurements, Thermal sensing, Temperature sensors, Silica

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Proceedings Article | 20 May 2013 Paper

Enhancement of Brillouin signal in plastic optical fibers using pulsed pump with multimode-fiber-assisted coupling

Yosuke Mizuno, Neisei Hayashi, Kentaro Nakamura

Proceedings Volume 8794, 87942I (2013) https://doi.org/10.1117/12.2023242

KEYWORDS: Phase only filters, Single mode fibers, Silica, Interfaces, Polymer optical fibers, Phonons, Combustion, Scattering, Glasses

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Proceedings Article | 7 November 2012 Paper

Dependences of Brillouin frequency shift on strain and temperature in optical fibers doped with rare-earth ions

Yosuke Mizuno, Neisei Hayashi, Kentaro Nakamura

Proceedings Volume 8421, 84218S (2012) https://doi.org/10.1117/12.965869

KEYWORDS: Optical fibers, Single mode fibers, Scattering, Silica, Temperature metrology, Laser scattering, Signal detection, Ions, Light scattering, Thulium

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Proceedings Article | 7 November 2012 Paper

Brillouin frequency shift dependences on temperature and strain in PMMA-based polymer optical fibers estimated by acoustic velocity measurement

Neisei Hayashi, Yosuke Mizuno, Daisuke Koyama, Kentaro Nakamura

Proceedings Volume 8421, 84218V (2012) https://doi.org/10.1117/12.970284

KEYWORDS: Polymer optical fibers, Optical fibers, Acoustics, Ultrasonics, Temperature metrology, Velocity measurements, Scattering, Sensors, Polymethylmethacrylate, Fiber optics sensors

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Showing 5 of 25 publications

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