Dr. Koji Yamada Profile

Dr. Koji Yamada

Senior Research Engineer at Nippon Telegraph and Telephone Corp

SPIE Involvement:

Conference Program Committee | Author

Proceedings Article | 9 March 2015 Paper

Athermal silicon optical interposers operating up to 125 degrees celsius

Yutaka Urino, Nobuaki Hatori, Kenji Mizutani, Tatsuya Usuki, Junichi Fujikata, Koji Yamada, Tsuyoshi Horikawa, Takahiro Nakamura, Yasuhiko Arakawa

Proceedings Volume 9390, 93900H (2015) https://doi.org/10.1117/12.2084995

KEYWORDS: Silicon, Temperature metrology, Waveguides, Optical modulators, Modulators, Integrated optics, Palladium, Semiconductor lasers, Diodes, Optical components

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Proceedings Article | 7 February 2015 Paper

Comprehensive photonics-electronics convergent simulation and its application to high-speed electronic circuit integration on a Si/Ge photonic chip

Kotaro Takeda, Hiroshi Fukuda, Koji Yamada, Rai Kou, Hidetaka Nishi, Tatsurou Hiraki, Kota Okazaki, Tsuyoshi Yamamoto, Kentaro Honda, Tsutomu Takeya, Hideyuki Nosaka, Tai Tsuchizawa, Mitsuo Usui

Proceedings Volume 9388, 938806 (2015) https://doi.org/10.1117/12.2076713

KEYWORDS: Optical components, Device simulation, Resonators, Silicon, Receivers, Optical design, Optical circuits, Photonics systems, Eye, Waveguides

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Proceedings Article | 19 February 2014 Paper

High-density optical interconnects by using silicon photonics

Yutaka Urino, Tatsuya Usuki, Junichi Fujikata, Masashige Ishizaka, Koji Yamada, Tsuyoshi Horikawa, Takahiro Nakamura, Yasuhiko Arakawa

Proceedings Volume 9010, 901006 (2014) https://doi.org/10.1117/12.2041418

KEYWORDS: Silicon, Waveguides, Semiconductor lasers, Optical modulators, Optical interconnects, Silicon photonics, Electronics, Photonics, Optical components, Integrated optics

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Proceedings Article | 6 March 2013 Paper

Silicon, silica, and germanium photonic integration for electronic and photonic convergence

Hiroshi Fukuda, Tai Tsuchizawa, Hidetaka Nishi, Rai Kou, Yasuhiko Ishikawa, Kazumi Wada, Koji Yamada, Tatsurou Hiraki, Kotarou Takeda

Proceedings Volume 8628, 862806 (2013) https://doi.org/10.1117/12.2006691

KEYWORDS: Silicon, Waveguides, Polarization, Germanium, Silicon photonics, Silica, Photon polarization, Refractive index, Photonic devices, Photonic integrated circuits

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Proceedings Article | 17 February 2010 Paper

Integrated photonic devices based on silicon photonic wire waveguide platform

Toshifumi Watanabe, Koji Yamada, Hiroshi Fukuda, Tai Tsuchizawa, Sei-ichi Itabashi, Hidetaka Nishi, Songbong Park, Yasuhiko Ishikawa, Kazumi Wada, Hiroyuki Shinojima

Proceedings Volume 7606, 76060T (2010) https://doi.org/10.1117/12.840889

KEYWORDS: Waveguides, Polarization, Silicon photonics, Germanium, Silicon, Optical fibers, Photodiodes, Signal attenuation, Integrated photonics, Photonic devices

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Proceedings Article | 18 February 2009 Paper

Polarization diversity circuit based on a double-core structure consisting of silicon photonic wire and silicon-oxinitride waveguide

Hiroshi Fukuda, Hidetaka Nishi, Koji Yamada, Toshifumi Watanabe, Tai Tsuchizawa, Hiroyuki Shinojima, Sei-ichi Itabashi

Proceedings Volume 7220, 722002 (2009) https://doi.org/10.1117/12.808066

KEYWORDS: Polarization, Waveguides, Silicon, Silicon photonics, Refractive index, Resonators, Optical testing, Mineralogy, Directional couplers, Data transmission

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Proceedings Article | 11 November 2008 Paper

Applications of nonlinear effects in silicon wire waveguides: all-optical modulation, wavelength conversion, and quantum entanglement

K. Yamada, H. Nishi, S. Itabashi, T. Watanabe, T. Tanabe, T. Tsuchizawa, M. Notomi, H. Fukuda, H. Takesue, A. Shinya, H. Shinojima, E. Kuramochi, Y. Tokura

Proceedings Volume 7134, 71341R (2008) https://doi.org/10.1117/12.803760

KEYWORDS: Waveguides, Silicon, Modulation, Silicon photonics, Switching, Picosecond phenomena, Absorption, Interferometers, Photonic crystals, Wave propagation

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Proceedings Article | 10 September 2007 Paper

Si wire waveguide devices

T. Tsuchizawa, K. Yamada, S. Itabashi, H. Fukuda, H. Shinojima, T. Watanabe

Proceedings Volume 6775, 67750K (2007) https://doi.org/10.1117/12.733512

KEYWORDS: Silicon, Waveguides, Polarization, Brain-machine interfaces, Wave propagation, Signal attenuation, Transmittance, Scanning electron microscopy, Optical components, Line edge roughness

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Proceedings Article | 25 March 2005 Paper

Ultrasmall resonant tunneling/dropping devices in 2D photonic crystal slabs

Takasumi Tanabe, Kouji Yamada, G. Kim, Satoshi Mitsugi, Go Kira, Akihiko Shinya, Toshifumi Watanabe, Shingo Kondo, Eiichi Kuramochi, Masaya Notomi, Tai Tsuchizawa

Proceedings Volume 5729, (2005) https://doi.org/10.1117/12.592631

KEYWORDS: Waveguides, Resonators, Photonic crystals, Optical filters, Nonlinear filtering, Optical switching, Light wave propagation, Silicon, Switching, Cladding

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Proceedings Article | 9 July 2003 Paper

Functional components in SOI photonic crystal slabs

Tetsuhumi Shoji, Hirofumi Morita, Eiichi Kuramochi, Kouji Yamada, Tai Tsuchizawa, Masaya Notomi, Toshihumi Watanabe, Akihiko Shinya

Proceedings Volume 5000, (2003) https://doi.org/10.1117/12.480057

KEYWORDS: Waveguides, Cladding, Light wave propagation, Photonic crystals, Photonic integrated circuits, Single mode fibers, Polymer multimode waveguides, Polymers, Silicon, Dispersion

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Proceedings Article | 11 July 2002 Paper

SOI-based photonic crystal line-defect waveguides

Tai Tsuchizawa, Jun-Ichi Takahashi, Itaru Yokohama, Koji Yamada, Tetsufumi Shoji, Masaya Notomi, Emi Tamechika, Akihiko Shinya, Hirofumi Morita, Toshifumi Watanabe

Proceedings Volume 4870, (2002) https://doi.org/10.1117/12.475545

KEYWORDS: Waveguides, Silicon, Dispersion, Waveguide modes, Photonic crystals, Silica, Crystals, Photonic integrated circuits, Cladding, Transmittance

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Proceedings Article | 25 April 2002 Paper

Si-based photonic crystals and photonic bandgap waveguides

C. Takahashi, K. Yamada, Akihiko Shinya, Jun-Ichi Takahashi, Itaru Yokohama, Masaya Notomi

Proceedings Volume 4655, (2002) https://doi.org/10.1117/12.463864

KEYWORDS: Photonic crystals, Waveguides, Dispersion, Silicon, Transmittance, Wave propagation, Velocity measurements, Fabry–Perot interferometers, Photonic integrated circuits, Cladding

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Showing 5 of 12 publications

Conference Committee Involvement (7)

Integrated Photonics Platforms III

7 April 2024 | Strasbourg, France

Integrated Photonics Platforms II

4 April 2022 | Strasbourg, France

Integrated Photonics Platforms: Fundamental Research, Manufacturing and Applications

6 April 2020 | Online Only, France

Silicon Photonics: from Fundamental Research to Manufacturing

23 April 2018 | Strasbourg, France

Silicon Photonics and Photonic Integrated Circuits

3 April 2016 | Brussels, Belgium

Showing 5 of 7 Conference Committees

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