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Feature Cutting edge research: An ‘optical comb’ for medicine, environment, astronomy, and other applications

News and Events
 A Small but Shining University : The University of Electro-Communications is selected for the Program for
Promoting the Enhancement of Research Universities First International Moscow Institute of Physics and Technology--University of Electro-Communications
Workshop (MIPT-UEC) Launch of the UEC ASEAN Research Center (UARC)

Research Highlights
 Bioimaging: Visualizing real-time development of capillary networks in adult brains
 Fusion Science: Heavy ions and lost resonance lines
 Molecular motors: Bubble-driven walking
 Data security: Unexpected information leakage from side channel

Topics UEC Aikido Club: Focus on flexible body and clear mind Gigabit Research Consortium Letter from Alumni

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

Cutting edge research: An ‘optical comb’ for medicine, environment,
astronomy, and other applications
Kaoru Minoshima
Research Director of the ‘JST-ERATO MINOSHIMA Intelligent Optical
Synthesizer Project’
Department of Engineering Science, Graduate School of Informatics andEngineering, UEC“In spite of the tremendous advances in laser and optical communications,
we still have not harnessed the potential of light and optical waves,” says Professor Kaoru Minoshima. “Lightwaves could become an ‘intelligent fundamental entity’ if we could control and exploit the time, phase andfrequency information of light.”
The core of the JST-ERATO project is the concept of an ‘optical frequency
comb’ that was the basis for the 2005 Nobel Prize in physics.

The ‘opticalfrequency comb’ is the optical spectrum of a stable light source such as alaser, where the peaks are equally spaced in for example, a power density(ordinate) versus frequency (abscissa) plot. An ‘optical frequency comb’ canbe produced by monitoring the continuous pulses of light from a laser andconverting the light to frequency over time. The result will be highly
discrete frequencies along the time axis corresponding to the ‘teeth’ of acomb. Now, one application of an ‘optical frequency comb’ is an opticalruler.

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

“Applications of ‘optical frequency combs include metrology, such as an optical ruler, optical atomic clocks,
imaging, astronomy and spectroscopy,” explains Minoshima. “One of the main objectives of this project is todevelop an ‘intelligent optical synthesizer’ by integrating state of the art electronics and optical technology.”
Specifically, the project will develop an intelligent light source enabling the control the properties of lightincluding time, frequency, phase, and polarization.
“I think that the 21st century may be the ‘age of light’”, says Minoshima. “I hope that this project will makesignificant contributes to this field. I am looking for young, motivated scientists to join me for this project.”
Minoshima Laboratory at UEC
http://www.femto-comb.es.uec.ac.jp/en/index_e.html
JST-ERATO MINOSHIMA Intelligent Optical Synthesizer Project
http://www.jst.go.jp/erato/minoshima/en/index_e.html

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

A Small but Shining University : The University of Electro-Communications isselected for the Program for Promoting the Enhancement of Research
Universities“The Program for Promoting the Enhancement of Research Universities” focuses on the overall academic
research functions of universities and other institutions. It is a project launched by the Ministry of Education,
Culture, Sports, Science and Technology (MEXT) in fiscal 2013 to support the strengthening of researchcapabilities of universities engaged in highly advanced, world-class research activities.
The Program supports the implementation of initiatives to effectively combine specialized research
environment reforms (such as the hiring and use of research management personnel, who are responsible forresearch strategy and intellectual property management including university research administrators (URA));promotion of efforts to accelerate competitive research; creation of new cutting-edge fields of research; anddevelopment of a world-class research environment.
UEC was selected by MEXT as one of 22 institutions for support in FY 2013. It was selected for several
reasons including:
1. The active research being conducted by its young scientists and engineers
2. International partnerships and many joint research projects being conducted with overseas researchers
3. Excellent results produced in the fields of optics and photonics
4. Active inter industry-business-academia partnerships
5. University reforms being promoted in accordance with a management strategy that takes advantage of thestrengths of a small university.

UEC has established the Organization for Research Promotion to strengthen its research capabilities andenable it to become a leading center for world-class research. This will be achieved by adopting acomprehensive approach to planning and implementation of policies to promote vigorous, state of the art
research, as well as provisions of support for research activities.

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

UEC is striving to be a “Small but Shining” university, and developing three management strategies that havebeen promoted under the leadership of the university president:
1. Borderless knowledge
2. Alliance and cooperation
3. Openness and transparency

It is also developing its research promotion structure by analyzing the status of its research activities andstrengthening its graduate school, as well as by strengthening its efforts to recruit world-class talent andimproving its level of internationalization.
An analysis of UEC’s research activities has revealed that research findings in the field of physics wereranked among the most impressive in the world, with distinctive results having been produced in other fields
as well.

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

First International Moscow Institute of Physics and Technology—University ofElectro-Communications Workshop (MIPT–UEC)The first International MIPT—UEC Workshop (Moscow Institute ofPhysics and Technology, Moscow, Russia and University of ElectroCommunications,Tokyo) on “Atomic, molecular and optical physics’’
was held at the Lebedev Physical Institute of Russian Academy of
Sciences from 30th October to 1st November, 2013. The Workshop washeld as part of a framework of international cooperation between the
Moscow Institute of Physics and Technology (MIPT) and the University
of Electro-Communications (UEC).

Members in front of Conference Hall

The principal participants in this workshop were 7 professors and 12
students from UEC and 8 professors and 9 students from MIPT. After
representatives from the two universities presented overviews about their
institutes, there followed presentations and discussion on atomic andmolecular and optical physics and related fields.
The UEC delegates visited the laboratory of Dr. Kolachevsky who, prior
to this workshop, had given a series of lectures on quantum electronics at

Snapshot of the workshop of MIPTUEC as part of an intensive course on applied physics in September
2013.
The students from both universities engaged themselves in lively
discussions on physics and a wide range of other topics. Although thevisit was only three days long, the UEC delegation enjoyed thehospitality of MIPT and had a very fruitful time. The UEC−MIPT
Workshop II is scheduled to be held at UEC in the autumn of 2014.

UEC delegates visiting Prof. Kolachevsky
Lab.Kolachevsky Lab.KMUTTThe University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

Launch of the UEC ASEAN Research Center (UARC)The University of Electro-Communications (UEC, Tokyo)
established the UEC ASEAN Research Center (UARC) with thecooperation of King Mongkut's University of Technology
Thonburi (KMUTT)--UECs partner university--as the center of
UECs activities in Thailand and other Southeast Asian countries.
UEC held the inauguration ceremony of UARC on February 7,
2014 at the UARC in Bangkok CODE Building. Delegations
from UEC, KMUTT and Megurokai (UEC Alumni Association)
participated in the ceremony. The opening ceremony followed
Gift exchange between UEC and KMUTT

the following procedure.

1. Opening address by UEC President, Dr. Makoto Kajitani
2. Address by KMUTT President, Dr. Sakarindr Bumiratana
3. Presentation of the letter of appointment as UEC visiting professor to Dr. Kosin Chamnongthai, Associate
Professor of KMUTT

4. Exchange of commemorative gifts between UEC and KMUTT
5. Introduction of the participants
6. Unveiling ceremony and group photos
UARC is going to take an active role in the coordination of research collaboration with local universities andenterprises which includes accelerating exchange of students in Thailand and other Southeast Asian countries.

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

Bioimaging: Visualizing real-time development of capillary networks in adultbrains
The advancement of microscopic photoimaging techniques has enabled the visualization of real-time cellular
events in living organs. The brain capillary network exhibits a unique feature that forms a blood-brain barrier(BBB), which is an interface of vascular endothelial cells that control the traffic of substances from thebloodstream into the brain. Damage and disruption to the BBB are implicated in contributing to thepathogenesis and progression of neurodegenerative disorders such as Alzheimer’s and epilepsy. However, thecellular interactions present in the BBB are incredibly difficult to study in vivo, so understanding of thesemechanisms in living brains is limited.
Now, Kazuto Masamoto and co-workers at the University of Electro-Communications in Tokyo, National
Institute of Radiological Sciences, and Keio University School of Medicine, have used 4D live imaging
technology to study the effects of hypoxia (a deprivation of oxygen) on the BBB plasticity in live adult mice.
The team focused their attention on how the BBB plastic changes work against hypoxia, looking in particularat the endothelial cells and their communications to the neighboring astrocytes - interactions which take placein controlling the BBB traffic to fulfill neural demands. Using genetically-modified mice with endothelial
cells that express green-fluorescent protein, Masamoto and colleagues imaged the real-time changes of BBBs
before and during a three-week period of hypoxia in adult mouse cortex.
Their results showed that the capillaries in the BBB, which prior to hypoxia showed no signs of activity,
began to sprout new blood vessels which in places formed new networks together. The neighboring astrocytes
reacted quickly to wrap the outside of the new vessels, activity which the researchers believe helps stabilize
the BBB traffic and integrity.
Further investigations into the molecular mechanisms that control BBB plasticity are expected to lead toadvances in treatment of neurodegenerative disorders and cerebral ischemia, and thus provide an effective
way for preventing BBB dysfunction in diabetes, hypertension, and aging.
Publication and Affiliation
Kazuto Masamoto1,2,*, Hiroyuki Takuwa2, Chie Seki2, Junko Taniguchi2, Yoshiaki Itoh3, Yutaka Tomita3,
Haruki Toriumi3, Miyuki Unekawa3, Hiroshi Kawaguchi2, Hiroshi Ito2, Norihiro Suzuki3 and Iwao Kanno2.
Microvascular sprouting, extension, and creation of new capillary
connections with adaptation of the neighboring astrocytes in adultmouse cortex under chronic hypoxia.
Journal of Cerebral Blood Flow & Metabolism 34, 325-331 (February 2014) | doi:10.1038/jcbfm.2013.201
http://www.nature.com/jcbfm/journal/v34/n2/full/jcbfm2013201a.html

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1. Brain Science Inspired Life Support Research Center, University of Electro-Communications, Chofu, Tokyo,
Japan
2. Molecular Imaging Center, National Institute of Radiological Sciences, Inage, Chiba, Japan
3. Department of Neurology, School of Medicine Keio University, Shinjuku, Tokyo, Japan.

*e-mail address: masamoto@mce.uec.ac.jp

Scientists at the University of Electro-Communications in Tokyo, National Institute of Radiological Sciences,and Keio University School of Medicine, have revealed how the blood-brain barrier (BBB) reacts to oxygen
deprivation (hypoxia) in adult mouse brains. 4D imaging with multi-photon microscopy revealed sprouting of
the new capillary (green) which stimulate adaptive changes of the neighboring astrocytic processes (red), as
shown above.

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

Fusion Science: Heavy ions and lost resonance lines
Identifying the ns-np resonance lines in alkali-metal-like ions is an important issue in fusion plasma science inthe view of spectroscopic diagnostics and radiation power loss. Whereas for n = 2, 3 and 4 these resonances
are prominent and well studied, so far no one could clearly identify the resonance lines for n = 5, the so-called
promethiumlike sequence.
Nobuyuki Nakamura at the Institute of Laser Science of the University of Electro-Communications in Tokyo,
and colleagues at the National Institute for Fusion Science and SOKENDAI have now experimentally clarified
the reason for the lost resonance lines.
Nakamura and colleagues studied highly-charged bismuth ions using the electron-beam ion trap at The
University of Electro-Communications in Tokyo. A compressed high-density electron beam ionizes thebismuth atoms that are then trapped by a combination of applied electric fields and the attraction force exerted
by the electrons. The trapped ions keep colliding with the beam which leads to further ionization and thecreation of highly-charged states like promethiumlike bismuth missing 22 electrons, or samariumlike missing
21 electrons.
The spectra are recorded with a spectrometer and compared to numerical calculations. Nakamura and coworkers show that the 5s-5p resonance lines are very weak in plasma with various electron densities, contrary
to the theoretical prediction made more than thirty years ago, due to the presence of a long-lived metastablestate.
Publication and Affiliation
Yusuke Kobayashi1 Daiji Kato2,3 Hiroyuki A. Sakaue2 Izumi Murakami2,3 and Nobuyuki Nakamura1.
Spectroscopic study of promethiumlike bismuth with an electron-beam ion trap: Search for alkali-metal-likeresonance lines. Phys. Rev. A 89, 010501(R), (2014).
1. Institute for Laser Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
2. National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
3. Department of Fusion Science, The Graduate University of Advanced Studies (SOKENDAI), Toki, Gifu 5095292, JapanThe University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

Experimental spectra of highly charged bismuth ions at different electron energies. Promethiumlike andsamariumlike spectral peaks are identified.

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

Molecular motors: Bubble-driven walking
Computer simulations of relatively simple models provide clues to the complex physical mechanisms at workin real biomolecule motors.
The asymmetric Brownian ratchet model describes a motor particle moving on a rail (for example a protein
like kinesin walking a on a microtubule). There are two possible states: in one the particle moves in a random
walk along the rail; in the other it feels the asymmetric potential from the rail. Alternating between these twostates leads to a directed movement.
A collaboration including the University of Electro-Communications, Keio University, RIKEN, University of
Fukui and University of Nebraska-Lincoln led by Noriyoshi Arai previously suggested that the transition
between the two states is caused by bubble formation. Arai and co-workers have now refined their model
including a more realistic temperature-controlled switching mechanism.
In their model the two states of the asymmetric Brownian ratchet are a hydrophobic ‘bubble state’ and ahydrophilic ‘liquid state’. In the former, the motor is close to the rail, bubbles form due to the hydrophobic
effect and the motor feels an asymmetric potential. In the latter, the motor is far from the rail and due tothermal fluctuations it moves randomly along it. The switching between the two states is caused by the changeof hydrophobic/hydrophilic parameter of the motor controlled by the temperature of the motor itself.
As computer simulations indicate, the mechanism proposed by Arai and collaborators could lead to very
efficient walking depending on the material used for the motor, for example thermosensitive polymers.
Publication and Affiliation
Noriyoshi Arai*1,2,3, Kenji Yasuoka2,Takahiro Koishi4, Toshikazu Ebisuzaki3, and Xiao Cheng Zeng5.
Understanding Molecular Motor Walking along a Microtubule: A Themosensitive Asymmetric Brownian
Motor Driven

by Bubble Formation.

J. Am. Chem. Soc. 135, 8616−8624, (2013).

1. Department of Mechanical Engineering and Intelligent Systems, University of Electro-Communications, Chofu,
Tokyo, Japan
2. Department of Mechanical Engineering, Keio University, Yokohama, Japan
3. Computational Astrophysics Laboratory, RIKEN, Wako, Saitama, Japan
4. Department of Applied Physics, University of Fukui, Fukui, Japan
5. Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska, United States* Corresponding Author arai@mce.uec.ac.jp

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

A computer simulation of the motor-rail system. The walking mechanism is explained by the alternation
between the bubble and the liquid state.

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Data security: Unexpected information leakage from side channel
In this high-technology age, finding ways to prevent information leakage via device hacking is increasingly
important. In order to pre-empt attacks, researchers carry out false attacks on encrypted devices to findweaknesses that may be exploited in order to implement safeguards.
In particular, so-called“side-channel attacks” are used to collect data on emissions from circuits such as heatand electromagnetic waves, to analyse information about the circuit and the devices.
Kazuo Sakiyama and his group at the University of Electro-Communications in Tokyo has uncovered apreviously unknown target they refer to as ‘fault sensitivity’ that can be exploited in devices to retrievesensitive data such as secret information (cryptographic key). The target lies on the threshold between adevice’s normal behaviour and any abnormal behaviour triggered when a device is attacked.
In certain attacks, a fault of some kind is deliberately introduced into the device environment – for example
inducing strong magnetic field, or forcing the internal electronics to work faster than the device expects(‘overclocking’). These cause the device processor to output incorrect results, potentially allowing attackers todecipher encrypted information.
In a series of attacks on three different hardware implementations, Sakiyama and his team found that, during
overclocking in one of the three implementations, the fault sensitivity threshold could be used to extract thesecret key – the parameter that transforms ciphertext into plaintext. This was in spite of previous error
safeguards in programs which stop working once the device is forced into abnormal behaviour.
The researchers believe that a specialized ‘S-box’, a component used to hide the relationship between the key
and the ciphertext, incorporated into devices specifically to respond to timing abnormalities may lessen the
chances of sensitive data leakage during the fault sensitivity attack.
Publication and Affiliation
Yang Li, Kazuo Ohta, & Kazuo Sakiyama. New fault-based side-channel attack using fault sensitivity. IEEE
Transactions on Information Forensics and Security 7 (1) (2012).
All authors are affiliated with the Department of Informatics, The University of Electro-Communications,
Chofu-shi, Tokyo, Japan
Authors e-mail addresses: liyang@uec.ac.jp; kazuo.ohta@uec.ac.jp; sakiyama@uec.ac.jp

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

Sakiyama Laboratory from the University of Electro-Communications discovered a weakness in the thresholdof normal and abnormal behaviour during overclocking (CLK, above) in cryptographic device. This weakness
could be used to reveal the secret key, the parameter used to change ciphertext to plaintext, allowing attackers
to decipher a code.

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

UEC Aikido Club: Focus on flexible body and clear mind
“I decided to launch the UEC Aikido Club in 2007 when I joined
the Department of Mechanical Engineering and Intelligent
Systems at UEC,” says Professor Kazutoshi Kikkawa. “At thetime I did not have a lot of experience as an Aikido instructor.
So I was pleased to meet Cheow-Keong Choo, an associate
professor at the Center for International Programs andExchange, who was more experienced than me and I asked him

Training scene. Joint training with
Seisen University Aikido members.

to take charge of the training sessions.”
The UEC Aikido Club currently has about 20 members, who include domestic undergraduate
and graduate students, international students from Senegal and Indonesia, UEC staff andfaculty, and members of the public.
Members of the Club practice twice a week at the university
dojo and once a month at the ‘honbu-dojo’ in Shinjuku withmembers of other clubs.
“Our training focusses on developing skills enabling flexible
movements and a clear mind,” explains Choo, who started tolearn Aikido after graduating from UEC. “We do not train to

Training with Master Suzuki from
Aikido World Headquarters (Honbu-

destroy opponents. We follow the philosophy and spirit of Morihei Ueshiba, the founder of
Aikido.”Importantly, the members of the Club do to not participate in competitions. “We only take partin demonstrations,” says Kikkawa. “Also, I give a one semester course on Aikido as part ofphysical education at the university. It’s rare for universities to offer courses in Aikido inJapan.”
Kikkawa is also conducting research on Aikido, in particularbiomechanical analysis ofthrowing techniques employed in the martial art. In a recent publication Kikkawa andcolleagues analyzed the efficiency of the so-called ‘Tenchi-nage’ throw for experts andbeginners. “We hope that our research will be a useful for both teaching and learning Aikido,”
says Kikkawa.

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

Reference
Kazutoshi Kikkawa, Hidetaka Okada, Takuya Yamabe, Three-dimensional motion analysis of
Aikido Tenchi-nage, Proceedings of the International Council for Health, Physical Education,

Recreation, Sport, and Dance 2011 (ICHPER•SD ASIA, 2011).

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

Gigabit Research Consortium
Directors Yoshio Kami
The “Gigabit Era High Frequency Circuits and EMC Design
Research Group” (known as Gigabit Research Consortium) was
launched in October 2011 with goal of training engineers to design
high frequency products and for technology transfer of research at
the University of Electro-Communications, Tokyo.
“Our activities include consulting based projects with companies aswell as sponsored and collaborative research, “says Kami “TheConsortium has played an important role in the design of analog

Yoshio Kami giving a design guidelines
seminarindustrial products and advancement of research in this at universities. ”
In 2013 the consortium had a total of 101 members from industry and academia who attend out meetings,
which include students of the members from academia.
Specific activities include:
1. Symposia in the Spring and Fall with plenary talks and reviews of research by experts in analog design andtechnology.
2. 50 hour course of lectures and practical experiments on analog design and electromagnetic noise(Electromagnetic Compatibility: EMC; and EMI: Electro Magnetic Interference)
3. Industrial consultation

To-date, the Consortium has held 5 symposia, 9 lectures, 13 design guideline seminars, and 5 lectures courses.
Also, the Consortium’s ‘myoelectric hand sub-committee’ is also active.
The Consortium has produced DVD media of the lectures on the 7 topics featured in the design guidelines
seminars for e-learning.
The Consortium is conducting joint research with three companies this fiscal year.

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

The Consortium is also planning to launch a sub-committee group on‘power electronics’ to discuss the technical aspects of EMC fromlarge power devices such as motors in electric vehicles.

Participants at a meeting of the ‘myoelectric
hand sub-committee’

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

Letter from Alumni
Jie Chen, Director Professor, the Institute of Microelectronics,
Chinese Academy of Sciences (IME,CAS), Beijing, China.
I received my master’s and doctorate degrees from the
Department of Electronic Engineering, the University of ElectroCommunications (UEC) in 1991 and 1994, respectively. My
research theme was data compression based on information
theory and wavelet theory. My supervisors were Professor Shin
Hasegawa and Professor Shuichi Itoh.
I recall that when I first met Professor Itoh and discussed theresearch topics for my master ‘s degree in 1988, I actucally did

At Tiananmen Square, when I was invited by the
Chinese government to attend the 60th founding
anniversary

not really understand why Professor Itoh advised me to do the research on data compression because at thetime I could not imagine that data compression technologies would become so widely used in digital cameras,
digital TVs and notebook computers ten years later.Now, when I look back twenty years later, I think that I
was really lucky to choose data compression as my research theme at UEC under the guidance from Professor
Itoh and Professor Hasegawa. Now, data compression technologies such as gzip for computer data losslesscompression, and JPEG, MPEG, H.264 for image and video compression play an important role in the IT
world. I really appreciate the foresight for reseach directions of my advisors at UEC. During my time at UEC,
I learnt a lot from my superadvisors not only about academia but also issues related to independent thinking
and research methdology.
In order commercilaize the findings of my research, I jointed the venture company YOZAN Inc., where I
worked on mixed signal IC design for W-CDMA baseband processor for three years, and developed a seriesof mixed basedband chips with low power consumption feature for NTT DoCoMo.
Then In 1998, I returned to UEC to join the Itoh Lab. in the
Graduate School of Information Systems as an associate
professor, to work with my supervisor Professor Itoh to study
data compression and mixed signal IC design. This was an
enjoyable time for me to work in UEC from 1998 to 2001.
My studies in Japan were supported by a Japanese government
schoolarship (Gokuhi Ryugakusei) but the opportnity to study inJapan was provided by Chinese government. So I had to return toChina to serve my motherland where many people were poor andthe economy and technology were waiting for developing. In

Characteristic and evaluation of custom CMOS
image sensors developed in-house by Superpix
Micro Technology

2001, I was selected by Chinese Academy of Sciences as one of

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

the 100 Talented Scientists from overseas Chinese, and then returned to China to join the Institute of IME,
CAS as a professor.
It is about 14 years since returning to China. During these 14 years, I have been involved in research andeducation on signal processing and mixed signal IC design for satellite navigator positioning baseband
processors, multimedia processors and Network on a Chip (NOC) systems, and have advised more than 30
PhD students.
At the same time, I set up the two venture companies, LHWT Microelectronics and Superpix Micro
Technology to develop wireless communications chips and CMOS Image Sensor (CIS) products. We havedeveloped W-CDMA Airmonitor for NTT DoCoMo, WiFi baseband IPs for SONY, and also developed aseries of CIS products.
I still have a good relationship with colleagues at UEC and support UEC activities in China by organizing thejoint annual alumni meeting in Beijing and providing internship positions for UEC students. I am proud to be
a UEC graduate and will love UEC forever.

The University of Electro-Communications 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585© 2014 The University of Electro-Communications.

The University of Electro-Communications (UEC) in Tokyo
is a small, luminous university at the forefront of applied sciences, engineering, and technology
research. Its roots go back to the Technical Institute for Wireless Commutations, which wasestablished in 1918 by the Wireless Association to train so-called wireless engineers in maritime
communications in response to the Titanic disaster in 1912. In 1949, the UEC was established as anational university by the Japanese Ministry of Education, and moved in 1957 from Meguro to its
current Chofu campus Tokyo.
With approximately 4,000 students and 350 faculty, UEC is regarded as a small university, but withparticular expertise in wireless communications, laser science, robotics, informatics, and materialscience, to name just a few areas of research.
The UEC was selected for the Ministry of Education, Culture, Sports, Science and Technology (MEXT)
Program for Promoting the Enhancement of Research Universities as a result of its strengths in threemain areas: optics and photonics research, where we are number one for the number of joint
publications with foreign researchers; wireless communications, which reflects our roots; andmaterials-based research, particularly on fuel cells.
International Public Relations
The University of Electro-Communications
1-5-1 Chofugaoka, Chofu, Tokyo 182-8585
E-mail : kokusai-k@office.uec.ac.jp
Website : http://www.uec.ac.jp/eng/

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