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Your search keyword '"Hikaru Fukushima"' showing total 3 results
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3 results on '"Hikaru Fukushima"'

1. A non-carboxylating pentose bisphosphate pathway in halophilic archaea

Author

Takaaki Sato, Sanae (Hodo) Utashima, Yuta Yoshii, Kosuke Hirata, Shuichiro Kanda, Yushi Onoda, Jian-qiang Jin, Suyi Xiao, Ryoko Minami, Hikaru Fukushima, Ayako Noguchi, Yoshiyuki Manabe, Koichi Fukase, and Haruyuki Atomi

Subjects
Biology (General), QH301-705.5
Abstract

A nucleoside degradation pathway in halophilic archaea is identified, which converts the ribose moiety of guanosine to dihydroxyacetone phosphate and ethylene glycol.

Published
2022
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2. Polarization Splitting Grating Coupler for Optical Antenna of LiDARs Consisting of Two Gratings Coupling Light in a Perfectly Vertical Direction

Author

Tetsuya Shimogaki, Hikaru Fukushima, Daisuke Inoue, Tadashi Ichikawa, and Tatsuya Yamashita

Subjects
Silicon nanophotonics, Sensors, Applied optics. Photonics, TA1501-1820, Optics. Light, QC350-467
Abstract

Grating couplers (GCs) are devices for transmitting and receiving the light propagated in a waveguide in silicon photonic integrated circuits (PICs). In this study, we propose a polarization splitting GC (PSGC) for the optical antenna of light detection and ranging (LiDAR). The PSGC was designed on the basis of two GCs coupling in a perfectly vertical direction. Our experiment demonstrated that the designed PSGC transmitted a polarization-multiplexed beam. The transmitting and receiving efficiencies of the optical antenna consists of lenses and PSGCs were calculated, and then the optical parameter for maximizing them was clarified.

Published
2021
Full Text
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3. Polarization Splitting Grating Coupler for Optical Antenna of LiDARs Consisting of Two Gratings Coupling Light in a Perfectly Vertical Direction

Author

Hikaru Fukushima, Daisuke Inoue, Tadashi Ichikawa, Tatsuya Yamashita, and Tetsuya Shimogaki

Subjects
Diffraction, Physics::Optics, 02 engineering and technology, Grating, 01 natural sciences, Waveguide (optics), Silicon nanophotonics, 010309 optics, 020210 optoelectronics & photonics, Optics, 0103 physical sciences, Vertical direction, 0202 electrical engineering, electronic engineering, information engineering, Applied optics. Photonics, Electrical and Electronic Engineering, Computer Science::Information Theory, Physics, Coupling, Silicon photonics, business.industry, Sensors, Optical polarization, QC350-467, Optics. Light, Polarization (waves), Atomic and Molecular Physics, and Optics, TA1501-1820, business
Abstract

Grating couplers (GCs) are devices for transmitting and receiving the light propagated in a waveguide in silicon photonic integrated circuits (PICs). In this study, we propose a polarization splitting GC (PSGC) for the optical antenna of light detection and ranging (LiDAR). The PSGC was designed on the basis of two GCs coupling in a perfectly vertical direction. Our experiment demonstrated that the designed PSGC transmitted a polarization-multiplexed beam. The transmitting and receiving efficiencies of the optical antenna consists of lenses and PSGCs were calculated, and then the optical parameter for maximizing them was clarified.

Published
2021

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