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Showing papers by "Takuro Fujii published in 2013"

Proceedings Article•DOI•
Lambda-scale embedded active-region photonic crystal lasers for off-chip interconnect

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Shoichiro Matsuo1, Koji Takeda1, T. Sato1, Takuro Fujii1, Akihiko Shinya1, E. Kuramochi1, Masaya Notomi1, Koichi Hasebe1, Takaaki Kakitsuka1 •
Nippon Telegraph and Telephone1
01 Jan 2013
TL;DR: In this article, the output power of an electrically driven photonic crystal laser was increased to 39.3μW by using a six-quantum well structure and decreasing the series resistance.
Abstract: We successfully increase the output power of an electrically driven photonic crystal laser. By using a six-quantum-well structure and decreasing the series resistance, the device, having 32-μA threshold current, exhibits 39.3-μW output power. We also demonstrate bit-error rate measurements with 10-Gbit/s signal without using optical amplifier.

1 citations

Proceedings Article•DOI•
Single-mode lasing of Lambda-scale Embedded Active-region Photonic-crystal (LEAP) laser with in-line coupled waveguide

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Akihiko Shinya1, T. Sato, Koji Takeda, Kengo Nozaki1, E. Kuramochi1, Takaaki Kakitsuka, Hideaki Taniyama1, Takuro Fujii, Matsuo Shinji, Masaya Notomi1 •
Nippon Telegraph and Telephone1
07 Nov 2013
TL;DR: In this paper, a new design for buried heterostructure photonic crystal nanocavity lasers with in-line coupled output waveguides and coupling buffer regions is proposed to realize single-mode lasing and a high output power for a current-injected nanolaser.
Abstract: We propose a new design for buried heterostructure photonic crystal nanocavity lasers with in-line coupled output waveguides and coupling buffer regions. This design enables us to realize single-mode lasing and a high output power for a current-injected nanolaser.

1 citations