Dr. Fumihiko Ito Profile

Dr. Fumihiko Ito

at NTT Access Network Service Systems Labs

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Author

Publications (6)

Proceedings Article | 23 April 2017 Paper

Distributional measurement of effective refractive index differences of multimode fibers by Brillouin spectrum decomposition

Masashi Yokota, Motoharu Miura, Hiroki Watanabe, Fumihiko Ito, Ryo Maruyama, Nobuo Kuwaki

Proceedings Volume 10323, 1032382 (2017) https://doi.org/10.1117/12.2265447

KEYWORDS: Optical fibers, Refractive index, Multimode fibers, Space division multiplexing, Spectrum analysis, Demultiplexers, Acoustics, Scattering, Cladding, Solids

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Proceedings Article | 2 June 2014 Paper

End-reflection assisted time domain Brillouin sensing with a novel probe pulse arrangement for branched fiber

Chihiro Kito, Fumihiko Ito, Hiroshi Takahashi, Kunihiro Toge

Proceedings Volume 9157, 91576F (2014) https://doi.org/10.1117/12.2059420

KEYWORDS: Optical fibers, Sensing systems, Laser beam diagnostics, Reliability, Reflectors, Dynamical systems, Fiber optics sensors, Temperature metrology, Sensors, Scattering

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Proceedings Article | 17 May 2011 Paper

Long-range coherent optical frequency domain reflectometry and its applications

Fumihiko Ito, Xinyu Fan, Yusuke Koshikiya

Proceedings Volume 7753, 77533F (2011) https://doi.org/10.1117/12.884820

KEYWORDS: Reflectometry, Birefringence, Interferometers, Polarization, Spatial resolution, Laser beam diagnostics, Optical fiber cables, Optical fibers, Modulation, Acoustics

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Proceedings Article | 17 May 2011 Paper

Ultra high dynamic range coherent optical time domain reflectometry employing frequency division multiplexing

Hiroyuki Iida, Yusuke Koshikiya, Fumihiko Ito, Kuniaki Tanaka

Proceedings Volume 7753, 77533J (2011) https://doi.org/10.1117/12.885586

KEYWORDS: Frequency division multiplexing, Reflectometry, Spatial resolution, Modulation, High dynamic range imaging, Optical amplifiers, Photodetectors, Polarization, Signal detection, Modulators

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Proceedings Article | 5 October 2009 Paper

Noise of long-range optical frequency domain reflectometry after optical source phase noise compensation

Xinyu Fan, Yusuke Koshikiya, Fumihiko Ito

Proceedings Volume 7503, 75032E (2009) https://doi.org/10.1117/12.834158

KEYWORDS: Spatial resolution, Interferometers, Acoustics, Reflectometry, Optical fibers, Polarization, Signal to noise ratio, Modulation, Coherence (optics), Fiber lasers

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Proceedings Article | 16 May 2008 Paper

Highly sensitive reflectometry over 20 km with sub-meter spatial resolution based on phase-noise-compensated optical frequency domain reflectometry and concatenative reference method

Xinyu Fan, Yusuke Koshikiya, Fumihiko Ito

Proceedings Volume 7004, 70043L (2008) https://doi.org/10.1117/12.785731

KEYWORDS: Reflectometry, Spatial resolution, Fiber lasers, Signal to noise ratio, Interferometers, Interference (communication), Phase measurement, Signal processing, Backscatter, Light sources

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Showing 5 of 6 publications

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