Fujitsu 2008 Annual Report Download - page 52

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Integrated mobile WiMAXTM base
station BroadOne WX300
(3) Technology for ultra-small optical link module
used in next-generation supercomputers
Fujitsu is at the forefront of the development of an ultra-small
optical link module to provide the high-speed calculation node
interconnectivity required in petaflop-class*1 supercomputers.
Our technology allows these
link modules to be reduced to
less than one-tenth the conven-
tional size, contributing signifi-
cantly to reductions in the size
of new supercomputers.
(4) Developing and implementing the world’s
smallest mobile WiMAXTM base station and
RF module for handsets
We have developed the world’s smallest outdoor base station
using mobile WiMAX*2 technology, a wireless communication
format used to provide broadband speeds in mobile environ-
ments. By combining a high-output transmission amp using
gallium nitride HEMT with Fujitsu’s proprietary digital pre-
distortion (DPD) technology*3, we were able to achieve unpar-
alleled efficiency at the world’s smallest size. This device will
help dramatically reduce base station construction costs and
operating expenses. The BroadOne WX300 outdoor macrocell
base station garnered the prestigious System Design Award at
the WiMAX World EMEA 2008 conference. We have also devel-
oped a radio frequency module
as technology for mobile WiMAX
terminals. This module inte-
grates all of the radio frequency
circuits, such as filters, needed
by a mobile terminal, and comes
in the world’s smallest size (15
mm2). This module makes it pos-
sible to reduce the size of a
mobile terminal in addition to
providing high-speed transmis-
sion and stable connection.
(5) Successful creation of a nanocarbon
structure by connecting carbon nanotubes
and graphene
Fujitsu successfully created the world’s first self-organizing
carbon composite structure by combining carbon nanotubes
and graphene—two nano-scale structures which differ in form
but are both made from carbon materials. Since the combined
structure exhibits the characteristics of both components, it is
believed to have high electrical and thermal conductivity in all
directions. Fujitsu expects these discoveries to lead to new
avenues of materials research and a wide range of potential
applications in electronic devices and heat dispersion devices.
*1 Petaflop: Refers to the maximum calculation speed of the computer. 1 petaflop
= 1 quadrillion floating-point operations per second.
*2 WiMAX: Worldwide Interoperability for Microwave Access. IEEE802.16- and
IEEE802.16e-compliant mobile wireless standard. WiMAX technology enables
data transmission speeds of up to 75 Mb/sec even when traveling at speeds of
120 km/hour.
*3 Digital pre-distortion (DPD) technology: Technology that adds an input signal
with the opposite characteristics to the distortion generated in an amplifier,
thereby correcting the distortion in advance.
Prizes and Awards
Fifth Annual Prime Minister’s Award for Contribution to
Industry-Academia-Government Collaboration
Dr. Mitsuru Sugawara, president and CEO of QD Laser, Inc. and serv-
ing concurrently as an executive of Fujitsu Laboratories, Ltd. and
Fujitsu Limited, was recognized for his tremendous achievements
in cooperative ventures between government, industry and aca-
demia with the Prime Minister’s Award—the highest award that
any individual or organization can receive in this field. The award
was shared with Professor Yasuhiko Arakawa and Professor Yoshiaki
Nakano of the University of Tokyo. The three scientists took part in
a photonic network technology research and development project
commissioned by New Energy and Industrial Technology Develop-
ment Organization (NEDO) and conducted by the Optoelectronic
Industry and Technology Development Association (OITDA). The
award recognizes Dr. Sugawara’s contributions to developing a
practical application of quantum dot laser technology, and the
establishment of a start-up company to commercialize this tech-
nology. QD Laser was established as a joint venture between the
corporate venture funds of Fujitsu and Mitsui Ventures.
Electron microscope images of
the new nanocarbon compos-
ite structure (a) and graphene
component (b).
Structure of new nano-
carbon composites
Ultra-small optical link module
with a transfer speed of 40Gbps
RF chip for mobile WiMAXTM ter-
minal (MB86K71)
050
ANNUAL REPORT 2008FUJITSU LIMITED
RESEARCH & DEVELOPMENT