Dr. Toshiki Yamada Profile

Dr. Toshiki Yamada

at NICT

SPIE Involvement:

Author

Publications (17)

Proceedings Article | 13 March 2024 Poster

Poster

Demonstration of optical beam manipulation with optical phased array using EO polymer and Si3N4 dual-layer waveguides

Yuji Miyamoto, Masato Miura, Junichi Shibasaki, Masakazu Namba, Kenji Machida, Rieko Ueda, Takahiro Kaji, Toshiki Yamada, Akira Otomo, Yoshikuni Hirano

Proceedings Volume PC12889, PC1288912 (2024) https://doi.org/10.1117/12.3001293

KEYWORDS: Phased array optics, Polymers, Waveguides, Polymer optics, Polymer multimode waveguides, Virtual reality, Refractive index, LIDAR, Electro optic polymers, Augmented reality

Proceedings Article | 14 March 2023 Presentation

Presentation

High performance EO polymer modulator for visible wavelength (Conference Presentation)

Shun Kamada, Rieko Ueda, Chiyumi Yamada, Kouichi Tanaka, Toshiki Yamada, Akira Otomo

Proceedings Volume 12417, 124170I (2023) https://doi.org/10.1117/12.2648646

KEYWORDS: Polymers, Modulators, Absorption, Electro optic polymers, Visible radiation, Optogenetics, Optical properties, Optical modulators, Optical communications, Molecules

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Proceedings Article | 1 April 2022 Presentation

Presentation

Highly efficient electro-optic polymer modulator operating in visible wavelength

Shun Kamada, Rieko Ueda, Chiyumi Yamada, Kouichi Tanaka, Toshiki Yamada, Akira Otomo

Proceedings Volume PC11997, PC1199704 (2022) https://doi.org/10.1117/12.2608004

KEYWORDS: Modulators, Polymers, Electro optic polymers, Waveguides, Modulation, Waveguide modes, Single mode fibers, Silicon, Silica, Quantum optics

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Proceedings Article | 7 March 2022 Presentation

Presentation

150-GHz-band antenna-coupled optical modulators using electro-optic polymer waveguides and patch antenna arrays

Takahiro Kaji, Isao Morohashi, Yukihiro Tominari, Toshiki Yamada, Akira Otomo

Proceedings Volume PC12000, PC120000C (2022) https://doi.org/10.1117/12.2610407

KEYWORDS: Waveguides, Polymers, Optical modulators, Antennas, Electro optic polymers, Terahertz radiation, Optical arrays, Wireless communications, Signal attenuation, Radio over Fiber

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Proceedings Article | 7 March 2022 Presentation

Presentation

Electro-optic polymers for visible light

Akira Otomo, Kouichi Tanaka, Chiyumi Yamada, Rieko Ueda, Shun Kamada, Toshiki Yamada

Proceedings Volume PC11998, PC1199806 (2022) https://doi.org/10.1117/12.2608043

KEYWORDS: Polymers, Visible radiation, Electro optic polymers, Modulators, Optical communications, LIDAR, Electro optics, Absorption, 3D displays

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Proceedings Article | 7 March 2022 Presentation

Presentation

Fabrication of free-standing films of poled EO polymers and laminated films for ultra-high-frequency electric field detection

Toshiki Yamada, Takahiro Kaji, Chiyumi Yamada, Akira Otomo, Tomoya Nakanishi, Hideyuki Tsunemori, Shigeki Fujimaru

Proceedings Volume PC11998, PC1199805 (2022) https://doi.org/10.1117/12.2607749

KEYWORDS: Polymers, UHF band, Terahertz radiation, Terahertz technology, Terahertz spectroscopy, Spectroscopy, Absorption, Wireless communications, Nondestructive evaluation, Millimeter wave sensors

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Proceedings Article | 7 March 2022 Presentation

Presentation

Photostability of the organic EO polymer at 1310nm wavelength

Yukihiro Tominari, Toshiki Yamada, Takahiro Kaji, Akira Otomo

Proceedings Volume PC11998, PC1199807 (2022) https://doi.org/10.1117/12.2610460

KEYWORDS: Polymers, Data centers, Electro optic polymers, Absorption, Transceivers, Oxygen, Optical interconnects, Optical components, Optical communications, Molecular lasers

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Proceedings Article | 5 March 2021 Presentation

Presentation

W-band optical modulators using organic EO polymer waveguides and patch antenna arrays

Takahiro Kaji, Isao Morohashi, Yukihiro Tominari, Yoh Ogawa, Norihiko Sekine, Toshiki Yamada, Akira Otomo

Proceedings Volume 11683, 1168305 (2021) https://doi.org/10.1117/12.2578218

KEYWORDS: Polymers, Antennas, Waveguides, Polymer multimode waveguides, Optical modulators, Electro optic polymers, Terahertz radiation, Nonlinear crystals, Polymer thin films, Modulation

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Proceedings Article | 5 March 2021 Presentation

Presentation

Design of an optical phased array using an electro-optic polymer waveguide serially grafted with a silicon nitride waveguide

Yuji Miyamoto, Masato Miura, Yoshikuni Hirano, Nobuhiko Funabashi, Rieko Ueda, Chiyumi Yamada, Takahiro Kaji, Toshiki Yamada, Akira Otomo, Kenji Machida

Proceedings Volume 11690, 1169003 (2021) https://doi.org/10.1117/12.2576623

KEYWORDS: Waveguides, Phased array optics, Electro optic polymers, Silicon, Polymers, Optical design, Stray light, Polymer multimode waveguides, Light wave propagation, Electro optics

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Proceedings Article | 5 March 2021 Presentation

Presentation

Photostability of the organic EO polymers in the O-band

Y. Tominari, T. Yamada, T. Kaji, A. Otomo

Proceedings Volume 11683, 1168304 (2021) https://doi.org/10.1117/12.2578230

KEYWORDS: Polymers, Oxygen, Data centers, Absorption, Optical components, Transceivers, Temperature metrology, Optical communications, Laser irradiation, Laser communications

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Proceedings Article | 5 March 2021 Presentation

Presentation

Evaluation and application of Stark effect of EO polymers

Akira Otomo, Toshiki Yamada

Proceedings Volume 11683, 1168306 (2021) https://doi.org/10.1117/12.2585607

KEYWORDS: Polymers, Terahertz radiation, Absorption, Refractive index, Particle accelerators, Millimeter wave sensors, Electromagnetic radiation

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Proceedings Article | 10 March 2020 Presentation

Presentation

Continuous-wave terahertz detectors using electro-optic polymer waveguides and gold antenna arrays (Conference Presentation)

Takahiro Kaji, Isao Morohashi, Yukihiro Tominari, Yoh Ogawa, Norihiko Sekine, Toshiki Yamada, Akira Otomo

Proceedings Volume 11277, 112770J (2020) https://doi.org/10.1117/12.2545825

KEYWORDS: Terahertz radiation, Antennas, Continuous wave operation, Electro optic polymers, Waveguides, Gold, Millimeter wave sensors, Polymers, Sensors, Absorption

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Proceedings Article | 26 February 2020 Paper

Paper

Phase compensation method for optical phased array based on phase-shifting digital holography

Masato Miura, Yuji Miyamoto, Yoshikuni Hirano, Yasushi Motoyama, Kenji Machida, Rieko Ueda, Chiyumi Yamada, Toshiki Yamada, Akira Otomo, Hiroshi Kikuchi

Proceedings Volume 11284, 1128424 (2020) https://doi.org/10.1117/12.2544093

KEYWORDS: Waveguides, Phase shifts, Phased array optics, Digital holography, Phase measurement, Phase compensation, Calibration, Beam steering, Light wave propagation, Polymers

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Proceedings Article | 4 March 2019 Paper

Paper

Impact of a time gate to the purity of single photons emitted from colloidal quantum dots

T. Ihara, S. Miki, T. Yamada, H. Terai

Proceedings Volume 10929, 109290X (2019) https://doi.org/10.1117/12.2507334

KEYWORDS: Single photon, Excitons, Signal processing, Quantum dots, Single photon detectors

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Proceedings Article | 5 October 2015 Presentation

Presentation

Development and characterization of thermally stable electro-optic polymers and devices (Presentation Recording)

Akira Otomo, Isao Aoki, Chiyumi Yamada, Toshiki Yamada

Proceedings Volume 9564, 956409 (2015) https://doi.org/10.1117/12.2187701

KEYWORDS: Polymers, Electro optic polymers, Electro optics, Optical communications, Modulators, Silicon photonics, Glasses, Molecules, Polarization, Communication and information technologies

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Proceedings Article | 1 October 2013 Paper

Paper

Bacteriorhodopsin-based bipolar photosensor for biomimetic sensing

Katsuyuki Kasai, Yoshihiro Haruyama, Toshiki Yamada, Makoto Akiba, Yukihiro Tominari, Takahiro Kaji, Toshifumi Terui, Ferdinand Peper, Shukichi Tanaka, Yoshitada Katagiri, Hiroshi Kikuchi, Yoshiko Okada-Shudo, Akira Otomo

Proceedings Volume 8817, 88170N (2013) https://doi.org/10.1117/12.2026517

KEYWORDS: Thin films, Coating, Visualization, Thin film coatings, Biomimetics, Edge detection, Proteins, Biosensing, Glasses, Electrodes

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Proceedings Article | 21 February 2011 Paper

Paper

Two-photon excited fluorescence from colloidal quantum dots on SiN photonic crystals

Xingsheng Xu, Toshiki Yamada, Shiyoshi Yokoyama

Proceedings Volume 7937, 79371F (2011) https://doi.org/10.1117/12.876865

KEYWORDS: Luminescence, Photonic crystals, Quantum dots, Excitons, Electron beam lithography, Femtosecond phenomena, Semiconductors, Biomedical optics, Light emitting diodes, Quantum wells

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Showing 5 of 17 publications

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