資料５－D

Commission D (Electronics and Photonics) Activity Report
November 2009-February 2010
March 2, 2010
Tadao Nagatsuma
1) Commission Activities
AP-RASC2010:
Most members of Commission D are responsible for conveners in AP-RASC2010, and areworking hard to organize five (5) sessions by first collecting invited speakers. Currently, 10
speakers have accepted invitation.
URSI-GA2011:
Together with Franz Kaertner of MIT, Rene Beigang of University of Kaiserslautern, Germany
and myself have submitted proposal for joint sessions between D and possiblycommissions A and F on millimeter-wave and terahertz-wave technologies; “Enablingtechnologies for millimeter and THz wave applications”, and “Millimeter and THz wave
applications, including NDT, security, communication, sensors, spectroscopy, etc.”
2) Domestic activities related to areas covered by Commission D:
Technical meetings on Microwave Photonics (IEICE):
1st Meeting: November 13, 2009 at Tokyo Institute of Technology (Tokyo)“Recent millimeter-wave and free-space optics technologies and their future trends”
4 invited and 4 contributed papers
nd2 Meeting: January 27, 2010 at Advanced Institute of Science and Technology (Osaka)“Hot topics in microwave photonics”
5 invited and 5 contributed papers
International Workshop on Terahertz Technology: TeraTech’09:
November 30 to December 3, 2009 at Osaka University Nakanoshima Center (Osaka)
40 invited and 100 contributed papers

Recent Domestic Organizations on Terahertz Technologies and Their Activities
Terahertz (THz) electromagnetic waves, which cover an unexplored portion of spectrum
between infrared and microwaves at frequencies from 100 GHz to 10 THz, have been expected
to offer innovations in sensing, imaging, spectroscopy, and communications. In Japan, several1

organizations, which contribute to accelerate the THz science and technology in both academic
societies and industries, have been established; Terahertz Technology Forum, Technical Groupon Terahertz Application Systems in the IEICE, Terahertz Technology Professional Group intheJapan

SocietyofApplied

Physics(JSAP),

TechnicalGroup

onTerahertz

Electromagnetic-wave Industrial Applications in Japan Science and Technology Agency (JST),
Division of Terahertz Spectroscopy in Spectroscopical Society of Japan, etc.
Terahertz Technology Forum held a unique seminar called “Terahertz Business Seminar:
Terabiz 2010” on January 22, 2010 in Tokyo, since terahertz technologies are reaching a tipping
point from scientific interests to industrial applications as shown in Fig. 1.

Technology evolution

Appli.C
Appl.B

Application
A

Tipping
point

Seeds-oriented
research phase

1980
Electro-optic(EO)sampling(1982)

1990

2000

THz imaging(1995)
THz TDS(1990)

THz QCL(2002)

2020

THz camera(2008)TPG 120GHz wireless Mail inspection(1996)(2002)
system(2008)
UTC-PD(1997)

Fig. 1

2010

Needs/market
driven phase
2030

year
Representative
THz technologies

Laser THz
microscope(2003)

Evolution of terahertz technologies.

One of the newest organizations is the study group on THz ICT, which was started in
September 2009 at Kinki Bureau of Telecommunications in Ministry of Internal Affairs andCommunications (MIC). Main points in monthly study meetings are as follows;
1) Needs of high-speed wireless communications
2) Advantages of terahertz waves
3) Feasibility of THz communications including enabling devices4) Strategy for development of THz communications and future frequency allocation issue
Figure 2 shows possible application scenes of terahertz communications, discussed in the study2

group. In addition to regular meeting, an open experiment of THz communications wasdemonstrated at Osaka Nakanoshima Center on January 29, 2010.
For details, http://www.soumu.go.jp/soutsu/kinki/studygroup/2009/THz/index.html

Outdoor・Disaster recovery
・Live Broadcast

ＯＳ１

ＯＳ２

ApS1

ApS2
ApS4
Data ｂ・・・

Data ｄData ｃOpticalNetworkIndoor

THz-wave
Access Point

Super-reality
Wireless Display

・・・

ApS3
Data ａTHz-wave
Access Point
Remote Robot
Control

UHDTV
cameraWireless
Cloud PC
Medicalsensors

Telemedicine

3D Teleconference

4K-cinema,UHDTV

OS1

ApS1

ApS2

Data ａData ｃData ｂHomeBusiness

Instantaneous Data Transfer

Fig. 2

Possible applications of teraherz communications.

3