Lightwave Research Laboratory Research Group
Faculty
Keren BergmanPh.D. Students
Atiyah AhsanDavid Calhoun
Cathy Chen
Christine Chen
Gouri Dongaonkar
Robert Hendry
Ammar Khan
Qi Li
Kishore Padmaraju
Lisa Pinals
Howard Wang
Michael Wang
Ke Wen
Lee Zhu
Research Scientists
Post-Doctoral Researchers
Noam OphirSebastien Rumley
Visiting Scholars
Takashi ShiraishiMaster's and Undergraduate Researchers
Professor Keren Bergman (Principal Investigator)
Office: 1300 Mudd or 805 Shapiro CEPSR
Phone: 212-854-2280
Fax: 212-854-2900
Keren Bergman is the primary investigator of the Lightwave Research Laboratory and the Charles Batchelor Professor of Electrical Engineering of Columbia University in the City of New York
Atiyah Ahsan (Ph.D. Candidate)
Office: 815 Shapiro CEPSR
Phone: 212-854-3109
Fax: 212-854-2900
Atiyah Ahsan received her B.S. in electrical engineering from Tufts University, Boston, MA in 2010. She is currently working towards her M.S. and Ph.D at Columbia University. Her research interests are optical packet switching, optical performance monitoring and energy efficient optical networks.
David Calhoun (Ph.D. Candidate)
Office: 804 CEPSR
Phone: 212-854-5874
Fax: 212-854-2900
David Calhoun received his B.S. in Electrical and Computer Engineering (Summa Cum Laude) from Rowan University in Glassboro, NJ in May 2012. He is currently pursuing his M.S. and Ph.D. at Columbia University, with interests in novel silicon photonic devices and optical interconnects.
Cathy Chen (Ph.D. Candidate)
Office: 815 Schapiro CEPSR
Phone: 212-854-3109
Fax: 212-854-2900
Cathy Chen received her BS in Electrical and Computer Engineering, with a minor in Asian Studies from Cornell University in Ithaca, NY in 2009, and her MS and M.Phil in Electrical Engineering from Columbia University in New York, NY in 2011 and 2013 respectively. Her undergraduate research was in the Computer Systems Laboratory at Cornell with interests in Computer Architecture. Her current research interests are next generation optical networks for data centers and FPGA development of optical network interface hardware.
Christine Chen (Ph.D. Candidate)
Office: 804 Shapiro CEPSR
Phone: 212-854-5874
Fax: 212-854-2900
Christine Chen received her B.S. in Electrical Engineering and Computer Sciences along with a minor in East Asian Languages and Cultures from the University of California, Berkeley in May 2011. She also worked for the university’s newspaper, The Daily Californian. She is currently studying towards her M.S. and Ph.D. at Columbia University, with her research focus being in the area of silicon photonics for optical interconnection networks and high-performance computing systems.
Gouri Dongaonkar (Ph.D. Candidate)
Office: 817 Shapiro CEPSR
Phone: 212-854-0336
Fax: 212-854-2900
Gouri Dongaonkar received her B.S. in Electrical and Computer Engineering (Suma Cum Laude) from Rutgers University in Piscataway, NJ in 2011. She is currently working towards a M.S. and Ph.D. at Columbia University, pursuing research in silicon photonics for next generation computer architectures.
Robert Hendry (Ph.D. Candidate)
Office: 817 Shapiro CEPSR
Phone: 212-854-0336
Fax: 212-854-2900
Robert Hendry received a B.S. in computer science from Hobart College in Geneva, NY, in 2010. He is currently working towards a M.S. and Ph.D. at Columbia University, pursuing research in optical interconnection networks for chip multiprocessor architectures.
Ammar Khan (Ph.D. Candidate)
Office: 804 CEPSR
Phone: 212-854-5874
Fax: 212-854-2900
Ammar Khan received his BS in Electrical Engineering (Summa Cum Laude) with a minor in Mathematics from the University of Minnesota in May 2012. His research interests include Digital Signal Processing and Machine Learning.
Qi Li (Ph.D. Candidate)
Office: 803 Schapiro CEPSR
Phone: 212-854-5348
Fax: 212-854-2900
Qi Li received his B.Eng in Electrical and Computer Engineering (First Class Honour), with a minor in Mathematics from the Hong Kong University of Science and Technology in 2010, and a M.S. in Electrical Engineering from Columbia University in 2012. In 2010 spring he was an exchange student at Cornell University. His research interests include silicon photonics and optical interconnects.
Dr. Noam Ophir (Post-Doctoral Researcher)
Office: 803 Schapiro CEPSR
Phone: 212-854-5348
Fax: 212-854-2900
Noam Ophir received a B.Sc. with a concentration in Math & Physics from Hebrew University in 2002 and an M.Sc. in Electrical Engineering from Tel Aviv University in 2006. He worked as a communications and signal processing engineer for I.N., Israel from 2002-2008. His research interests include silicon photonic devices and wave propagation in stochastic media. His current focus is on broadband all-optical signal manipulation in silicon-photonic devices.
Kishore Padmaraju (Ph.D. Candidate)
Office: 803 Schapiro CEPSR
Phone: 212-854-5348
Fax: 212-854-2900
Kishore Padmaraju graduated from the University of Rochester with a B.S. in Electrical & Computer Engineering as well as a B.S. in Physics in 2009, and a M.S. in Electrical Engineering from Columbia University in 2011. He is a recipient of an IBM/SRC Ph.D. fellowship. His research interests include advanced modulation formats and thermo-optic effects as applicable to silicon photonic devices.
Lisa Pinals (Ph.D. Candidate)
Office: 804 Shapiro CEPSR
Phone: 212-854-5874
Fax: 212-854-2900
Lisa Pinals received her B.S. in Electrical Engineering (Summa Cum Laude), with a minor in Economics, from Tufts University, Boston, MA in May, 2012. She is currently working towards her M.S. and Ph.D. at Columbia University, pursuing research in architectures for optical interconnection networks.
Dr. Sebastien Rumley (Post-Doctoral Researcher)
Office: 817 CEPSR
Phone: 212-854-0336
Fax: 212-854-2900
Sébastien Rumley received his M.S. degree in telecommunications engineering from the Ecole Polytechnique Fédérale de Lausanne (EPFL) in 2005, after graduate studies in Lausanne, Zurich and Santiago de Chile (PUC). He received PhD degree in 2011 from the EPFL, where he worked as research assistant at the Telecommunications Laboratory between 2006 and 2011. His research focus on optical network design, modelling and optimization, on one hand, and on software improving the research process, on the other hand. He collaborated in the COST actions 285 and 291
Takashi Shiraishi (Visiting Scholar)
Office: 813 Shaprio CEPSR
Fax: 212-854-2900
Takashi Shiraishi has received his MS in science and engineering from the Tsukuba University in 2002. He worked as a researcher for optical communication at Fujitsu Laboratories. He was engaged in developing a high speed lithium niobate optical modulator, focusing on its high speed electrical design and optical design, and assembly technology. Recently, his research focuses on optical transceiver and Si-ph networks for optical interconnections in future server system.
Howard Wang (Ph.D. Candidate)
Office: 803 Schapiro CEPSR
Phone: 212-854-5348
Fax: 212-854-2900
Howard Wang received his B.S. degree in Electrical Engineering (minoring in computer science and economics) from Columbia University in 2006 and an M.S. in Electrical Engineering in 2008. His research interests involve interfacing optical interconnection networks for high-performance computing.
Michael Wang (Ph.D. Candidate)
Office: 817 Schapiro CEPSR
Phone: 212-854-0336
Fax: 212-854-2900
Michael Wang graduated from Princeton University in 2008 with a BSE in Electrical Engineering (cum laude) and a Certificate Program in Finance. During his undergraduate years, his research interests included computer architecture and computer security. Currently, his research interests include architectures for photonic interconnection networks and parallel programming for high performance computing applications.
Ke Wen (Ph.D. Candidate)
Office: 804 CEPSR
Phone: 212-854-5874
Fax: 212-854-2900
Ke Wen received his B.S. in Electrical Engineering from Tsinghua University in Beijing, China, in 2010. From 2010 to 2012, he was a graduate student in Electrical and Computer Engineering in University of California, Davis. He is currently working towards a Ph.D. at Columbia University, pursuing research in optical interconnection networks for high-performance computing systems.
Lee Zhu (Ph.D. Candidate)
Office: 815 Shapiro CEPSR
Phone: 212-854-3109
Fax: 212-854-2900
Lee Zhu received his B.S. degree in Electrical Engineering from Caltech in 2006. From 2006 until 2009 he worked for Microsoft in Seattle WA, doing software development and test within the Content and Access Protection group. His current research interests are silicon photonic devices and optical interconnection networks.