資料7-DCommission D (Electronics and Photonics) Activity Report
November 2010-February 2011
March 1, 2011
Tadao Nagatsuma

1) Commission Activities
URSI-GASS2011:
Following two sessions and one workshop are organized by Japanese and international members
related to Commission D.
DAF1 - Enabling Technologies for Millimeter and THz Wave Applications (August 19, 2011)
DAF2 - Millimeter and THz Wave Applications, including NDT, security, communication,sensors, spectroscopy, etc. (August 19, 2011)URSI Workshop - Advances in Optical-Wireless Communications (August 13, 2011)

2) Domestic activities related to areas covered by Commission D
Technical study group on Microwave Photonics (IEICE):
3rd Meeting: November 26, 2010 at Central Research Institute of Electric Power Industry(Tokyo), “Radio-over-fiber technology and related topics”
3 invited and 6 contributed papers; invited papers were “NRD guide devices and theirapplications” by Prof. Yoneyama (Tohoku University), “Telecommunications for electric
power industry and recent trends in smart grid technology” by Dr. Nishida (Kyushu
Electric Power), and “Recent progress of RoF technologies in EU projects” by Dr.
Kawanishi (NICT).
th4 Meeting: February 4, 2011 at National Institute of Communications Technology (Tokyo),“THz technologies and related topics” cooperated with technical study group on THz
application systems (IEICE)
9 invited papers; invited papers were “Conference report on IRMMW-THz2010” by Dr.
Saito (NICT) et al., “Recent status of IEEE802.15 IG-THz” by Dr. Ajito (NTT), “Trends ofGaN device technologies” by Dr. Yamanaka (Mitsubishi Electric), “Present and future of
OCT technology” by Prof. Obayashi (Kitazato University), “Conference report on MWP
2010 and ECOC 2010” by Prof. Higashino (Osaka University) et al., “Optical comb
technology and optical frequency standards” by Hong (AIST) et al., “Standardization
activities of IEC for RoF transmitters” by Dr. Kurokawa (AIST) et al., “Next generation
free space optics system for ubiquitous communications” by Dr. Chedlia Ben Naila

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(Waseda University) et al. , and “Applications of RoF technology to broadcasting industry”
by Prof. Haeiwa (Hiroshima City University) et al.
Study group on THz ICT (Kinki Bureau of Telecommunications in Ministry of Internal
Affairs and Communications):
On February 4, 2011, in cooperation with the IECIE and THz technology Forum, Japan, an
open experiment was conducted, which combines a JGN2-plus (10-Gbps fiber-opticnetwork), and a 120-GHz band wireless link (10-Gbps wireless access), to demonstrate theworld-fastest seamless network. Between NICT Kyoto and Tokyo, a real-time teleconference
was shown with uncompressed 4-K and 2-K video transmission (Figure 1). In order to show
the usefulness and impact of this network, medical doctors attended to perform a future
telemedicine between the two sites using high-end services such as real-time 3-D videosystems.

ＪＧＮ２plus network（10 Gbps ）NICTTokyo

10Gbit/s

NTT Com.

KDDI・４K teleconferenceTokyo（NiCT-Koganei）

・４K teleconference・120 GHz wireless link
（Tx output : 10ｍW）
・bidirectional

Kyoto（NiCT-Keihana）

Figure 1. Setup for experimental demonstration of 10-Gbps wire and wireless network.

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