Portrait of Prof. Keren Bergman  

Keren Bergman


Mail Code 4712






Tel(212) 853-1657
Fax(212) 932-9421

Research Interests

Optical networking and communications: optical interconnection networks, fiber optic communication, photonic architectures in data centers and high performance computing systems, optically connected memory, silicon nanophotonics.

As director of Columbia’s Lightwave Research Laboratory, Bergman leads multiple research programs on optical interconnection networks for advanced computing systems, data centers, optical packet-switched routers, and nanophotonic networks-on-chip for chip multiprocessors. She is developing a new class of nanoscale photonic interconnect technologies that seamlessly move data from on-chip networks, across memory and large computing systems with extreme energy efficiency. These future platforms, driven by nanophotonic-enabled interconnectivity, and the enormous bandwidth advantage of dense wavelength division multiplexing, will fundamentally transform the computation-communications architecture, to create systems able to meet explosive information demands at all scales.

Bergman received a BS in electrical engineering from Bucknell University in 1988 and a PhD in electrical engineering from the Massachusetts Institute of Technology in 1994. She is a fellow of the Institute of Electrical and Electronics Engineers (IEEE) and of the Optical Society of America (OSA). 


  • AIM Photonics Institute, Leadership Council 2016 - Present
  • Founder and Scientific Director, Columbia Nano Initiative, 2014 - Present                         -
  • Charles Batchelor Professor of Electrical Engineering, Columbia University 2011 - Present
  • Chair of electrical engineering, Columbia University, 2011–2017
  • Professor of electrical engineering, Columbia University, 2006–2011
  • Sabbatical at IBM T. J. Watson Research Center, 2007–2008
  • Director, Lightwave Research Laboratory, Columbia University, 2002–
  • Associate professor of electrical engineering, Columbia University, 2001–2006
  • Senior Technical Adviser, National Security Agency, 1998–2007
  • Assistant professor of electrical engineering, Princeton University, 1994–2000


  • Fellow, Institute for Electrical and Electronics Engineers
  • Fellow, Optical Society of America 


  • IEEE Photonics Engineering Award 2016
  • 2016 Herman Haus Distinguished Lecture, MIT
  • Institute of Electrical and Electronics Engineers Fellow, 2009
  • IBM Faculty Award, 2008
  • Optical Society of America Fellow, 2003 
  • CalTech President's Award, 1997
  • Office of Naval Research Young Investigator, 1996–1999
  • National Science Foundation CAREER Program Investigator, 1995–1998
  • AT&T Bell Laboratories Fellowship, 1991–1994


  • Photonic Network-on-Chip Design; Keren Bergman, Luca Carloni, Aleksandr Biberman, Johnnie Chan, and Gilbert Hendry, Series: Integrated Circuits and Systems, Vol. 68, Springer Science + Business Media New York 2014.
  • Optical Interconnects for Future Data Center Networks; Christoforos Kachris, Keren Bergman, and Ioannis Tomkos, Springer Science + Business Media New York 2013.
  • K. Wen, P. Samadi, S. Rumley, C. P. Chen, Y. Shen, M. Bahadori, J. Wilke, K. Bergman, “Flexfly: Enabling a Reconfigurable Dragonfly Through Silicon Photonics,” [Best Student Paper Award] The International Conference for High Performance Computing, Networking, Storage and Analysis (SC|16) (Nov 2016).
  • D. Nikolova, D. M. Calhoun, Y. Liu, S. Rumley, A. Novack, T. Baehr-Jones, M. Hochberg, K. Bergman, “Modular architecture for fully non-blocking silicon photonic switch fabric,” Nature Microsystems & Nanoengineering 3 (1607) (Jan 2017).
  • P. Samadi, M. Fiorani, Y. Shen, L. Wosinska, K. Bergman, “Flexible Architecture and Autonomous Control Plane for Metro-scale Geographically Distributed Data Centers [Invited],” IEEE Journal of Lightwave Technology (JLT) (Jan 2017).
  • S. Rumley, D. Nikolova, R. Hendry, Q. Li, D. M. Calhoun, K. Bergman, “Silicon Photonics for Exascale Systems [Invited],” IEEE/OSA Journal of Lightwave Technology 33 (4) (Feb 2015).
  • M. Bahadori, S. Rumley, D. Nikolova, K. Bergman, "Comprehensive Design Space Exploration of Silicon Photonic Interconnects," IEEE Journal of Lightwave Technology, 33 (Nov 2015).