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High-density and wide-bandwidth optical interconnects with silicon optical interposers [Invited]

Photonics Research 2014年第3期2卷 S0001-S0007页

作者： Yutaka Urino Tatsuya Usuki Junichi Fujikata masashige ishizaka Koji Yamada Tsuyoshi Horikawa Takahiro Nakamura Yasuhiko Arakawa Institute for Photonics-Electronics Convergence System Technology(PECST) Japan Photonics Electronics Technology Research Association(PETRA) West 7 SCR16-1 OnogawaTsukubaIbarakiJapan National Institute of Advanced Industrial Science and Technology West 7 SCR16-1 OnogawaTsukubaIbarakiJapan Institute of Industrial Science The University of Tokyo4-6-1KomabaMeguroTokyoJapan

One of the most serious challenges facing exponential performance growth in the information industry is the bandwidth bottleneck in interchip *** propose a photonics–electronics convergence system in response to this *** demonstrate the feasibility of the system,we fabricated a silicon optical interposer integrated with arrayed laser diodes,spot-size converters,optical splitters,optical modulators,photodetectors,and optical waveguides on a single silicon *** this system,20 Gbps error-free data links and a 30 Tbps∕cm2 bandwidth density were *** bandwidth density is sufficient to meet the interchip interconnect requirements for the late 2010s.

关键词： optical system exponential

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Multichannel and high-density hybrid integrated light source with a laser diode array on a silicon optical waveguide platform for interchip optical interconnection

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Photonics Research 2014年第3期2卷 S0019-S0024页

作者： Takanori Shimizu Nobuaki Hatori Makoto Okano masashige ishizaka Yutaka Urino Tsuyoshi Yamamoto Masahiko Mori Takahiro Nakamura Yashuhiko Arakawa Institute for Photonics-Electronics Convergence System Technology(PECST) Japan Photonics Electronics Technology Research Association(PETRA) West 7SCR16-1 OnogawaTsukubaIbaraki 305-8569Japan National Institute of Advanced Industrial Science and Technology(AIST) West 7SCR16-1 OnogawaTsukubaIbaraki 305-8569Japan Institute of Industrial Science The University of Tokyo4-6-1 KomabaMeguroTokyo 153-8505Japan

A hybrid integrated light source was developed with a configuration in which a laser diode(LD)array was mounted on a silicon optical waveguide platform for interchip optical *** integrated light source is composed of 13-channel stripes with a pitch of 20 or 30μ*** output power of each LD in the 400 or 600-μm long LD array was over 40 mW at room temperature without *** output power uniformity was 1.3 dB including an LD array power *** use of a SiON waveguide with a spot size converter resulted in an optical coupling loss of 1 dB between an LD and SiON *** integrated light source including 52 output ports demonstrated a reduction in the footprint per *** also demonstrated a light source with over 100 output ports in which the number of output ports is increased by using a waveguide splitter and multichip *** integrated light sources are practical candidates for use with photonic integrated circuits for high-density optical interconnection.

关键词： waveguide interconnection optical

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Prevalence Rate of and Factors Influencing the Scarcest Social Networks of Elders from Longitudinal Perspective in Japan

Prevalence Rate of and Factors Influencing the Scarcest Soci...

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The 8th Asia/Oceania Regional Congress of Gerontology and Geriatrics

作者： masashige Saito Sophia University

＜正＞The purpose of this paper is to clarify the prevalence rate of and factors influencing the scarcest social networks of elders（SNE）from longitudinal perspective.

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Recent Progress in Plasma Control Studies on the Improvement of Plasma Performance in Heliotron J

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Plasma Science and Technology 2011年第1期13卷 21-25页

作者： Tohru MIZUUCHI Kazunobu NAGASAKI Hiroyuki OKADA Shinji KOBAYASHI Satoshi YAMAMOTO Takashi MINAMI Shinsuke OHSHIMA Masaki TAKEUCHI Kiyofumi MUKAI Hyunyong LEE Linge ZANG Kohta NOMURA masashige SUWA Kento YAMAMOTO Hiroaki YASHIRO Hayao YOSHINO Shouhei ARAI Tasuku KAGAWA Takayuki MINAMI Kouji MIZUNO Yoshinobu WADA Hiroto WATADA Nobuhiro NISHINO Yosuke NAKASHIMA Kiyoshi HANATANI Yuji NAKAMURA Shigeru KONOSHIMA Fumimichi SANO Institute of Advanced Energy Kyoto Univ. Kyoto University Pioneering Research Unit for Next Generation Graduate School of Energy Science Kyoto University Graduate School of Engineering Hiroshima University Plasma Research Center University of Tsukuba

Recent progress in plasma control studies on the improvement of plasma performance in Heliotron J is reviewed. The supersonic molecular beam injection （SMBI） fueling is successfully applied to Heliotron J plasma. A supersonic H2-beam is effectively injected to increase fueling efficiency and generate a peaked density profile. Local fueling with a short-pulsed SMBI can increase the core plasma density and avoid the degradation arising from edge cooling. Second harmonic electron cyclotron current drive （ECCD） experiments were conducted by launching a focused Gaussian beam with a parallel refractive index of -0.05 ≤ Nil 〈 0.6. Results show that the electron cyclotron （EC） driven current is determined not only by Nil but also by local magnetic field （B） structure where the EC power is deposited. Detailed analysis of the observed NI and B dependences is in progress with a ray-tracing simulation using the TRAVIS code. Fast ion velocity distribution was investigated using fast protons generated by ion cyclotron resonant frequency （ICRF） minority heating. For the standard configuration in Heliotron J, charge ex- change neutral particle analysis （CX-NPA） measurements show higher effective temperature of fast minority protons in the on-axis resonance case compared to that in the HFS （high field side） off-axis resonance case. However, the increase in bulk ion temperature in the HFS resonance case is larger than that in the on-axis resonance.

关键词： plasma control. Heliotron J improved confinement ECH/ECCD NBI ICRF. minority heating fueling control

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