‘Performance of the OSNR monitoring technique based on improved polarization-nulling method’
In this paper, we performed a comprehensive evaluation on the performances of this improved technique. For this evaluation, we first implemented a highly nonlinear transmission link consisted of 640-km long standard single-mode fiber (SMF) and dispersion-compensating fiber (DCF) modules, and measured the OSNR of eight WDM channels for over 10 hours. The results showed that the improved polarization-nulling technique could measure the OSNR with accuracy better than ±0.5 dB even when we intentionally increased the signal powers incident on the SMF and DCF to 0 dBm/channel (to invoke large nonlinearities). We also measured the performance of the improved technique in an ultra long-haul transmission link (~2000 km) by using a re-circulating loop. Even after the transmission over such a long distance, there was no observable error in the measured OSNR. The performance of the improved polarization-nulling technique was not affected by PMD as long as the total PMD was less than 60 ps.
Awarded 93 numbers of thesises
Award celemony of Samsung Electronics Humantech thesis award that competive with in creactive and knowledge, was held in International Conferencehall, Samsung Insurance Bd., Seoul on 21. This thesis award started 12 years ago, and the 81 numbers of high shool and university submitted the number of 844 thesis. Among these, the 93 numbers of thesis took prizes including 11 numbers of gold prize.
Jongyong, Yun, Samsung Electronics vice president, encouraged the winners with the comments of ‘ do best having the pride of I am competent person who make future of Korea’.
Gold prize reward of Humantech thesis award sponsing by the ministry of Science and Joongang Ilbo is 7 million won and total amount of reward is 360 million, which is biggest scientific thesis competition in Korea. Winners not only take advantages when joining Samsung electronics but also have opportunities of touring aboad factories.
The special award for greatest number both of submit and of acceptance is the Department of Electrical Engineering in KAIST. In high school division, Seoul Science high school is selected as the greated number of sumbit school, Korea Science Gifted School is selected as the greated number of acceptance and taking 1 billion won, respectively.
A structured packet-switched Networks-on-Chip (NoC) is designed and implemented for high-performance heterogeneous SoC design platform.
The chip integrates multiprocessors, multiple memories, and other heterogeneous Intellectual Properties and interconnection with 51mW and 1.6GHz on-chip networks.
The NoC adopts a partial activated crossbar, low-energy coding, and low-swing signaling for the power consumption optimization.
A Network-in-Package integrating four NoCs is fabricated in a 676-BGA-type package for larger and scalable systems and demonstrates 2D-image-processing and 3D-graphics applications.
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Min Yung Lee, doctoral student of the Dept. of Electrical Engineering of KAIST, received William E. Spicer Best Student Paper Award from the 2005 U.S. WORKSHOP on the PHYSICS and CHEMISTRY of II-VI MATERIALS, sponsored by U.S. Army RDECOM CERDEC Night Vision & Electronic Sensors Directorate, U.S. Army Research Laboratory, U.S. Army SMDC, U.S. Navy Electro-Optics Center, Penn State University, Office of Naval Research, Air Force Research Laboratory, the Minerals, Metals & Materials Society, and endorsed by the American Physical Society.
He is in the Infrared Image Sensor Laboratory, and won the honor by his research on gamma radiation effects on bromine- and hydrazine-treated HgCdTe photodiodes. His paper was selected to be the best because of its originality and practicality. His paper was focused on the surface treatment method and its effects, which has been one of the permanent issues in HgCdTe infared (IR) photodiodes. His suggested surface treatment method using hydrazine was reported very useful in the fabrication ofhigh-performance HgCdTe IR photodiodes, and moreover, the fabricated photodiode using hydrazine treatment showed an excellent radiation-tolerant property.
U.S. WORKSHOP on the PHYSICS and CHEMISTRY of II-VI MATERIALS is a workshop held annually in USA. In this year, the workshop was held from Sept. 20 to Sept. 22, for three days, in Boston, United States. The purpose of this workshop is to bring together the industry, governmental, and university communities that work with II-VI materials. These II-VI materials are critical in a wide range of detector technologies operating in the infrared, ultraviolet, x-ray, and gamma-ray regions of the spectrum. They include HgCdTe, ZnSe, ZnO, and CdTe, as well as other II-VI semiconductors and alloys.
Approximately 150 related erudite from 13 countries including United States, England, France, Germany, Israel, and Japan participated in this workshop. Total number of papers presented in this workshop was 75 and 17 papers among them were submitted by students, while only one of them were selected.
Professor Shin, Youngsoo of VLSI Design Technology Laboratory won the Best Paper Award with the paper ‘A mask reuse methodology for reducing System-on-a-Chip cost’ in ISQED (International Symposium on Quality Electronic Design) which happened during March 21 to March 23, 2005 in San Jose. Best Paper Award is an award given by VLSI design professionals under IEEE Computer Society to acknowledge the excellence in VLSI design area. Professor Shin proposed new design method that can produce SOC with high quiality and high integration cost-effectively. ISQED is an excellent symposium which discusses manufacturability, reliability, design methodology and other topics of VLSI design. This year, 222 papers were submitted; and 83 papers were accepted.
At the 11th Humantech Paper Awards Ceremony on 18th of last month, KAIST has won gold awards, silver awards and bronze awards for the individuals; and the division of electrical engineering won the special award for having the most awardees among departments of universities in Korea.
The division of electrical engineering of KAIST has won 3 gold awards, 4 silver awards and 3 bronze awards. The division of electrical engineering won the most awards surpassing the division of computer science of KAIST and the school of electrical engineering and computer science of Seoul National University. Also the division of electrical engineering of KAIST won the half of 6 gold awards which are the best awards in the competition in the graduate school group. This achievement made the division of electrical engineering the center of attention.
Mr. Kang, Dong-Goo (Advisor: Prof. Ra, Jong Beom), PhD student of the division of electrical engineering of KAIST won the gold award with the paper, ‘A New Path Planning Algorithm for Maximizing Visibility in Computed Tomography Colonography.’ Also PhD students, Mr. Chang, Sung-Il (Advisor: Prof. Yoon, Jun-Bo) and Mr. Jeon, Jin-Wan (Advisor: Prof. Lim, Koeng-Su) won the gold awards with the papers, ‘High-quality Versatile Microlens Arrays Using a New 3D Diffuser Lithography’ and ‘Electrostatic Digital Micromirror Device Using Interdigitated Cantilevers for Projection Display’.
Ju-pyeong Lee, doctoral student of the Dept. of Electrical Engineering of KAIST, received the Best Paper Award from the 11th Institute of Electrical and Electronics Engineers Real-Time and Embedded Technology and Applications Symposium (IEEE RTAS) sponsored by IEEE TC on Real Time System and supported from the U.S. National Science Foundation.
He is in the Computer Engineering laboratory, and won the honor by his research of technique of Delayed Locking Technique for Improving Real-Time Performance of Embedded Linux by Prediction of Timer Interrupt. His paper was selected to be the best because of its practicality. His research purposed the technique that can dramatically improve real time problem, which was indicated to be the big problem of Linux. Moreover, he presented the way to easily materialize this technique in the practical system.
Best Paper Award is the prize awarded by IEEE Computer Society in the recognition of outstanding achievement in the field of real time system and embedded technology.
IEEE RTAS is a symposium held annually by IEEE. In this year, the 11th symposium was held from March 7 to March 10, for four days, in San Francisco, United States. The purpose of this year symposium was to seek papers describing significant contributions both to state of the art and state of the practice in the broad field of embedded and open real-time computing, control, and communication. Therefore, it especially focused on online real-time and embedded applications ranging from industrial embedded applications such as aeronautics and automotive systems to open multimedia, telecommunication and mobile computing systems.
Approximately 200 related erudite from almost 20 countries including United States, England, France, Germany, Italy, and Sweden participated in this symposium. Total number of papers submitted to IEEE RTAS was 158, while only 53 of them were selected.
by Hye-jung Won / Staff Reporter
April, 2005 / The KAIST Herald
