S.J. Ben Yoo

S.J. Ben Yoo


(530) 752-7063


Ph. D. in Electrical Engineering with Minor in Physics, Stanford University, CA, 1991
M.S. in Electrical Engineering, Stanford University, CA, 1986
B.S. in Electrical Engineering (Distinction), Stanford University, CA, 1984

Professional Experience

Professor, University of California, Davis, Electrical & Computer Engineering, 2002-current
Director, Center for Information Technology Research in the Interest of Society, UCDavis, 2001-2011
Associate Professor, University of California, Davis, Electrical & Computer Engineering, 1999-2002
Senior Member of Technical Staff, Bellcore, Red Bank, NJ, 1991-1999


Electrical and Computer Engineering Graduate Group
Computer Science Graduate Group
Center for Information Technology Research in the Interest of Society

Research Interests

Optical networks, heterogeneous networking, cognitive networking, optically-interconnected computing systems, optical networking systems, high-performance routers, photonic and electronic integration, integrated system on chip, nanophotonic devices, nanophotonic-electronic integration. Cyberinfrastructure, Future Internet, Computing of the Future, Healthcare Information Technology. Collaborative, interdisciplinary research interfacing nanotechnology and societal systems.

Research Activities

S. J. Ben Yoo serves as Director of UC Davis CITRIS (Center for Information Technology Research in the Interest of Society) and Professor of Electrical Engineering at University of California at Davis (UC Davis). His research at UC Davis includes future Internet architectures, high-performance optical switching systems, optically-interconnected computing systems, nano photonic-electronic systems integration for next generation networking and computing systems, and bio-inspired cognitive networking. His recent demonstrations included optical label switching routers scalable to 42 Petabit/sec aggregate capacity with more than 1000 times improvement in performance/power efficiency over conventional electronic routers. Prior to joining UC Davis in 1999, he was a Senior Research Scientist at Bellcore, leading technical efforts in optical networking research and systems integration for DARPA sponsored MONET and NGI projects. His research activities at Bellcore included optical-label switching for the next-generation Internet (NGI), reconfigurable optical networks, wavelength interchanging cross connects, wavelength converters, vertical-cavity lasers, and high-speed modulators. He also participated in the advanced technology demonstration network/multiwavelength optical networking (ATD/MONET) systems integration, and a number of standardization activities. Prior to joining Bellcore in 1991, he conducted research on nonlinear optical processes in quantum wells, a four-wave-mixing study of relaxation mechanisms in dye molecules, and ultrafast diffusion-driven photodetectors at Stanford University (BS84, MS86, PhD91, Stanford University). Prof. Yoo serves as an Associate Editor for IEEE Photonic Technology Letters, and Guest Editor for IEEE/OSA Journal of Lightwave Technology, IEEE Journal of Special Topics in Quantum Electronics, and OSA Journal of Optical Networks. Prof. Yoo is a Fellow of IEEE, a Fellow of OSA, and a recipient of the DARPA Award for Sustained Excellence in 1997, the Bellcore CEO Award in 1998, and the Mid-Career Research Faculty Award (UC Davis) in 2004.

Selected Publications

(Full list available at: http://sierra.ece.ucdavis.edu/Publications.ashx)

Fiber Telecommunications V B: Systems, Chapter 16, pp. 641-694, editors: Ivan Kaminow, Tingye Li, and Alan E. Willner, Elsevier, ISBN: 978-0-12-374172-1, March 2008. (book chapter)

Nicolas K. Fontaine, Jie Yang, Zhong Pan, Sai Chu, Wei Chen, Brent E. Little, and S.J.BenYoo, "Continuously Tunable Optical Buffering at 40 Gb/s for Optical Packet Switching Networks." to appear in IEEE/OSA Journal of Lightwave Technologies, 2008.

S. J. B. Yoo, J. P. Heritage, V. J. Hernandez, R. P. Scott, W. Cong, N. K. Fontaine, R. G. Broeke, J. Cao, S-W Seo, J-H Baek, F. M. Soares, Y. Du, C. Yang, W. Jiang, K. Aihara, Z. Ding, B. H. Kolner, Anh-Vu Pham, Shu Lin, F. Olsson, S. Lourdudoss, K.Y. Liou, S.N.G. Chu, R. A. Hamm, B. Patel, W.S. Hobson, J. R. Lothian, S. Vatanapradit, L. A. Gruezke, W. T. Tsang, M. Shearn, A. Scherer, Spectral Phase Encoded Time Spread (SPECTS) Optical Code Division Multiplex Access Technology for Next Generation Communication Networks, OSA Journal of Optical Networks, Vol. 6, Issue 10, pp. 1210-1227 (2007) (invited).


Zhong Pan, Zuqing Zhu, Masaki Funabashi, Haijun Yang, and S. J. B. Yoo, "101-hop Cascaded Operation of an Optical-label Switching Router with All-optical Clock Recovery and 3R Regeneration," IEEE Photon. Technol. Lett., vol. 18, no. 15., pp 1654-1656, Aug. 2006.

Fei Xue, Zhong Pan, Haijun Yang, Jinqiang Yang, Jing Cao, Katsunari Okamoto, Shin Kamei, Venkatesh Akella, S. J. Ben Yoo, Design and Experimental Demonstration of a Variable Length Optical Packet Routing System with Unified Contention Resolution, IEEE/OSA Journal of Lightwave Technology, vol. 22, no. 11, pp. 2570-2581, Nov. 2004.


S. J. B. Yoo, Wavelength Conversion Technologies for WDM Network Applications, IEEE/OSA Journal of Lightwave Technology, 14, 955, (1996) (invited) .