Mr. Taketoshi Takahata Profile

Taketoshi Takahata

at Optoquest Co Ltd

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Author

Publications (3)

Proceedings Article | 31 January 2020 Presentation + Paper

Mode-selective switch for ROADM using volume holograms and spatial light modulator

Hotaka Hayashi, Atsushi Okamoto, Tomohiro Maeda, Taijun Shiba, Kazuhisa Ogawa, Akihisa Tomita, Taketoshi Takahata, Satoshi Shinada, Yuta Goto, Naoya Wada

Proceedings Volume 11309, 1130908 (2020) https://doi.org/10.1117/12.2544685

KEYWORDS: Switches, Holograms, Volume holography, Spatial light modulators, Signal to noise ratio, Multiplexing, Switching, Diffraction, Multiplexers, Single mode fibers

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Proceedings Article | 31 January 2020 Presentation + Paper

Spatial mode exchange technique using volume holograms with a random optical diffuser to reduce modal cross-talks

Shuanglu Zhang, Atsushi Okamoto, Taijun Shiba, Hotaka Hayashi, Kazuhisa Ogawa, Akihisa Tomita, Taketoshi Takahata, Satoshi Shinada, Yuta Goto, Naoya Wada

Proceedings Volume 11309, 1130909 (2020) https://doi.org/10.1117/12.2545600

KEYWORDS: Holograms, Volume holography, Diffusers, Multiplexing, Optical communications, Modulation, Digital micromirror devices, Holography, Numerical simulations, Telecommunications

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Proceedings Article | 12 July 2019 Open Access

Interferometric multi-core fiber optic gyroscope under temperature changing environment

Shinji Mitani, Kenichiro Nigo, Satoshi Karasawa, Haruyuki Endo, Taketoshi Takahata

Proceedings Volume 11180, 1118055 (2019) https://doi.org/10.1117/12.2536104

KEYWORDS: Temperature metrology, Fiber optic gyroscopes, Signal detection, Interferometry, Waveguides, Phase shifts, Light sources, Sensors, Manufacturing, Sagnac interferometers

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