News and Awards

Recent News and Awards

[June 2017] Min Yee Teh Wins the Exacomm 2017 Best Paper Award

[December 2016] Professor Keren Bergman Named One of the 10 Women in Networking in Year 2016

[November 2016] Ke Wen Wins the SC 2016 Best Student Paper Award

[October 2016] Professor Keren Bergman Wins IEEE Photonics Engineering Achievement Award

[June 2016] Christine Chen received the "Best Talk Award"

[March 2016] Michael Wang Recently named in Forbes 30 Under 30

[January 2016] David Calhoun was featured in "The Next Platform" article on Silicon Photonics

[September 2015] Christine Chen receives "Best in Session" award at SRC Techcon 2015

[September 2015] Dessislava Nikolova Featured in the 2015 Columbia University and NYC ASCENT Postdoc Research and Career Symposium

[August 2015] Dessislava Nikolova invited to participate in the 2015 MIT Rising Stars

[July 2015] Columbia Engineers Part of New Integrated Photonics Manufacturing Innovation Hub

[May 2015] Cathy Chen received Student Life Award

[January 2015] Cathy Chen named to SPIE IT Committee

[October 2014] Atiyah Ahsan and Cathy Chen named Rising Stars in EECS

[September 2014] OSA Highlights Our Research on Broadband Lorentz Non-reciprocity Demonstration

[August 2014] Christine Chen Receives Intel/SRC Ph.D Fellowship

[June 2014] SPIE Student Leadership Conference

[April 2014] Laser Focus World Article

[February 2014] HPCWire Interview

[October 2013] Wei Family Private Foundation Scholarship

[September 2013] Best in Session Award at SRC TECHCON Conference

[May 2013] Kishore Padmaraju awarded SPIE's John Kiel Scholarship

[May 2013] Lee Zhu featured in promotional IGERT video

[March 2013] 2013 OIDA Student Poster Contest

[February 2013] 2013 Corning Outstanding Student Paper Competition

[June 2012]Kishore Padmaraju receives IBM/SRC Ph.D. Fellowship

[June 2012]Christine Chen receives SRC Master's Scholarship

[March 2012] Aleksandr Biberman's research featured on the cover of "Reports on Progress in Physics"

[February 2012] Keren Bergman featured in Womensphere Leadership Forum Keynote

[February 2012] Keren Bergman featured in video "Why Is Datacom Now part of OFC?"

[February 2012] Keren Bergman featured in video "Datacom Solutions You Need"

[February 2012] 2012 Corning Outstanding Student Paper Competition

[January 2012] Cathy Chen profiled by Columbia Engineering

[November 2011] HPC Wire interviews Professor Keren Bergman

[October 2011] Keren Bergman named Charles Batchelor Professor of Electrical Engineering

[September 2011] ECOC best paper nomination

[March 2011] 2011 Corning Outstanding Student Paper Competition

[February 2011] The Record features Keren Bergman

[November 2010] Caroline Lai receives IEEE Photonics Society Graduate Student Fellowship

[November 2010] IEEE Photonics Society 2010 Annual Meeting Best Student Paper Award

[September 2010] Aleksandr Biberman receives the Marconi Society Young Scholar Award

[May 2010] Professor Keren Bergman, Chair of the 2010 Conference on Lasers and Electro-Optics (CLEO) Subcommittee on Micro- and Nano-Photonics Devices

[May 2010] 2010 Maiman Outstanding Student Paper Competition

[March 2010] 2010 Corning Outstanding Student Paper Competition

[February 2010] Nature features the work of Keren Bergman

[August 2009] Columbia University & GENI: Embedding Real-time Substrate Measurements for Cross-layer Communications (ERM)

[August 2009] Professor Keren Bergman Chairs Major Conference

[May 2009] Professor Keren Bergman, Chair of the 2009 Conference on Lasers and Electro-Optics (CLEO) Subcommittee on Micro- and Nano-Photonics Devices

[March 2009] Optical Fiber Communication Conference Features Breakthroughs in Next-Generation Ethernet, Metamaterials, Optical Data Processing and More

[March 2009] 2009 Corning Outstanding Student Paper Competition

[December 2008] EE's Keren Bergman Receives Honors

[November 2008] Professor Keren Bergman and Professor Steven Nowick Named IEEE Fellow

[October 2008] Professor Keren Bergman Receives Intel Grant

[October 2008] Professor Keren Bergman Receives 2008 IBM Faculty Award

[September 2008] Professor Keren Bergman to Take Part in Developing Next-Gen Integrated Access Networks



[December 2016] Professor Keren Bergman Named One of the 10 Women in Networking in Year 2016

Many people from around the world submitted one or more nominations for this list, and it was difficult to choose only 10 amazing women. The focus is on women who have had a major impact in networking and/or communications. The list represents diversity, e.g., diversity in the area of networking/communications.

Read More: [Official Web Page].

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[November 2016] Ke Wen Wins the SC 2016 Best Student Paper Award

The Best Student Paper Award went to "Flexfly: Enabling a Reconfigurable Dragonfly Through Silicon Photonics," by Ke Wen, Payman Samadi, Sebastien Rumley, Christine P. Chen,, Yiwen Shen, Meisam Bahadori, and Keren Bergman, Columbia University and Jeremiah Wilke, Sandia National Laboratories. Congratulations!



Read More: [SC 2016 Official Page].

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[October 2016] Professor Keren Bergman Wins IEEE Photonics Engineering Achievement Award

The IEEE Photonic Society presented the 2016 Engineering Achievement Award to Keren Bergman, Chalres Batchelor Professor and Chair of Electrical Engineering. The award was presented at the IEEE Photonics Conference and is given in recognition of an exceptional engineering contribution that has had a substantial impact on the development of laser or electro-optic technology or the commercial application of technology within the past 10 years. Professor Bergman was selected for her extraordinary work in "optical interconnect networks and photonic-abled architectures that advance communication and computing systems."

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[June 2016] Christine Chen received the "Best Talk Award"

Christine Chen was awarded a <93>Best Talk award<94> at the International OSA Network of Students (IONS) conference. Her presentation entitled <93>Spatially-Multiplexed Data in Silicon Photonics<94> was presented in the Telecommunications session. IONS was a three-day event held in Québec, Canada, where OSA students presented selected papers in research areas of optical communications.

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[March 2016] Michael Wang Recently named in Forbes 30 Under 30

Michael Wang has recently been named a Forbes 30 under 30 in Manufacturing & Industry. A recent doctoral graduate of Professor Keren Bergman’s Lightwave Research Lab, his work is at the intersection of engineering, design, technology, and health & well-being. As Co-Founder and Chief Engineer at FutureAir, Michael is re-imagining the world of indoor air. He is leading the development and integration of an IoT sensing platform and app that will improve indoor airflow, comfort, and energy efficiency.

Press Release: [Young Alumni Profile: Michael Wang]

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[January 2016] David Calhoun was featured in "The Next Platform" article on Silicon Photonics

Silicon photonics has emerged as one of those areas of such far-reaching potential that its challenges and benefits tend to be clouded in generalities. Light as the main medium does indeed promise to alter fields including biological and chemical sensing, navigation, radio frequency sensing, communications, but for our purposes here, the potential within large-scale computing is of greater interest...We shouldn’t be holding our breath for photonic devices to make it to market and hit large systems within the next year—or even for the next few years, says David Calhoun, a PhD fellow who focuses on the integration of photonic devices with larger systems at Columbia University's Lightwave Research Laboratory...

Press Release: [The Next Platform article]

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[September 2015] Christine Chen receives "Best in Session" award at SRC Techcon 2015

Christine Chen was awarded a "Best in Session" award at the Semiconductor Research Corporation’s (SRC) 2015 TECHCON conference. Her presentation and poster entitled "Spatial Multiplexing through Silicon Photonic Devices for High-Bandwidth Data Transmission" was presented in the session for Process & Design for Extreme Energy Efficient Computing. TECHCON is a two-day event held in Austin, Texas, each year where SRC members and students meet to present selected papers spanning multiple hot research areas in the semiconductor industry.

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[September 2015] Dessislava Nikolova Awarded the 2015 Columbia University and NYC ASCENT Postdoc Research and Career Symposium

Dessislava Nikolova is one of the five award winners of the 2015 Columbia University and NYC ASCENT Postdoc Research and Career Symposium. There were over 115 abstracts submitted from which the winning ones were selected. She will give one of the featured talks at the symposium to be held on September 17th 2015. The symposium is organized by Columbia University and the NYC ASCENT program and gives opportunity to postdocs to present their research to the wider research community.

Press Release: [Symposium Website]

Press Release: [Featured Talks]


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[August 2015] Dessislava Nikolova Invited to Participate in the 2015 MIT Rising Stars

Dessislava Nikolova has been selected among the top 60 female graduate students and postdoctoral scholars invited to participate in the 2015 MIT Rising Stars in Electrical Engineering Computer Science, the annual workshop unites the top women in EECS for two day of research presentations and informal panels and is aimed at those navigating the initial stages of their academic career.

Press Release: [Electrical Engineering]


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[July 2015] Columbia Engineers Part of New Integrated Photonics Manufacturing Innovation Hub

Columbia Engineering’s photonics experts, including Professors Keren Bergman, Michal Lipson, and Alex Gaeta, are an integral part of an exciting new Integrated Photonics Manufacturing Innovation Hub in Rochester, NY, announced by Vice President Joseph Biden at a press conference on July 27. In winning the bid, the NY-led consortium captured the largest federal investment—over $610 million, with $110 million in federal funds, and more than $500 million in non-federal contributions—to date under the Obama administration’s National Network for Manufacturing Innovation.



Press Release: [Columbia Engineering]



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[May 2015] Cathy Chen received Student Life Award

The Office of Graduate Student Affairs proudly announce the Lightwave Research Laboratory researcher Cathy Chen as our 2015 Graduate Student Life Award winner. The award is given for her dedication and commitment of improving the SEAS community and overall student life experience.


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[January 2015] Cathy Chen named to SPIE Information Technology Committee

Cathy Chen has been named a member of the SPIE Information Technology committee for 2015, as a student member. The SPIE Information Technology Committee provides oversight of the information technology capability and products of the Society and makes recommendations to staff and leadership.


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[October 2014] Atiyah Ahsan and Cathy Chen named Rising Stars in EECS

Lightwave Research Lab members Atiyah Ahsan and Cathy Chen have been selected to participate in UC Berkeley's Rising Stars in EECS Workshop in Berkeley, CA in November 2014.

This workshop brings together women who are interested in careers in academia, for two days of scientific interactions and career-oriented discussions. It will include research talks/posters as well as presentations on aspects of life in academia – from finding a faculty position to parameters of success as a junior faculty member. Participants will have the opportunity to present their ongoing research, to interact informally with our faculty members at UC Berkeley and from MIT, Stanford University, University of Washington, UC San Diego and Harvey Mudd College, and to receive advice for advancing their careers.

Their abstracts and biographies are now featured on the rising stars website.



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[September 2014] OSA Highlights Our Research on Broadband Lorentz Non-reciprocity Demonstration

Spotlight on Optics has featured our recent Optics Express paper titled "Experimental demonstration of broadband Lorentz non-reciprocity in an integrable photonic architecture based on Mach-Zehnder modulators", coauthored by Ph.D. student Qi Li and Prof. Keren Bergman of Lightwave Research Lab. In this paper we present a practical solution to the problem of optical isolation, one of the most critical problems in modern photonics. An optical isolator allows light to pass through in one direction but blocks it in the other, thereby acting as the optical analogue of the electronic diode. Because such a device induces a preferred direction for light, it must necessarily break an important symmetry of Maxwell's equations known as Lorentz reciprocity. This is an extremely difficult task, and the effort to find a solution, especially in the realm of "on-chip" photonic integrated circuits, has generated intense research activity in the past decade.



Press Releases: [OSA]

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[August 2014] Christine Chen receives Intel/SRC Ph.D Fellowship

Christine Chen has been awarded a Ph.D fellowship from the Semiconductor Research Corporation (SRC) and Intel Corporation. GFP Fellowships provide full tuition and fees and a competitive stipend for doctoral study. Fellowships also include an unrestricted annual gift of $2,000 for use by the student's faculty advisor in support of the student.

The Graduate Fellowship Program (GFP) mainly focuses on improving educational opportunities at the doctoral level and ensuring an educated workforce for the semiconductor industry. The objectives of the program are: 1) to encourage academically gifted U.S./permanent resident students to pursue doctoral degrees in research areas consistent with SRC program goals, and 2) to develop qualified doctoral graduates for member companies and U.S. universities.


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[June 2014] Cathy Chen and Atiyah Ahsan selected to attend OP14

SPIE, the International Society for Optics and Photonics , has selected current SPIE Student Chapter President, Cathy Chen to be a Facilitator in their annual Student Leadership Conference at Optics and Photonics 2014. SPIE Student Chapter Vice President Atiyah Ahsan was awarded a travel grant to attend as a rising student leader.


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[April 2014] Keren Bergman featured in Laser Focus World article

Laser Focus World, has featured the work of the Lightwave Research lab collaboration with Prof. Lipson at Cornell in an article entitled "Multimode Fiber-Optic Components: Multimode silicon photonics gains WDM-compatible multiplexer"


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[February 2014] Sebastien Rumley featured in Interview

HPCWire, featured Sebastien Rumley in an interview titled: "Podcast: Through the Lens: An Optical Network Future."


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[October 2013] Cathy Chen, Christine Chen, and Lee Zhu win Wei Family Private Foundation Scholarship

The Wei Family Private Foundation, has awarded Cathy Chen, Christine Chen, and Lee Zhu the 2013 Special Scholarships. The Wei Family Private Foundation a non-profit organization was established to honor the memory of Dr. (Mrs.) Chung Kwai Lui Wei and Mr. Hsin Hsu Wei. Its purpose is to award scholarship grants to students of Chinese heritage with high academic credentials who are pursuing a degree in Science or Engineering or Mathematics at Oregon State University or an Electrical Engineering graduate degree at Columbia University


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[Sept 2013] Best in Session Award at SRC TECHCON Conference

Graduate student Kishore Padmaraju was awarded a "Best in Session" award at the Semiconductor Research Corporation's (SRC) 2013 TECHCON conference for his presentation and poster titled "Initialization and Stabilization of Microring Resonators for Next-Generation Silicon Photonic Interconnects." TECHCON is a two-day event held in Austin, Texas, where SRC members and students presented papers on various areas of research on semiconductor technology.


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[May 2013] Kishore Padmaraju awarded SPIE's John Kiel Scholarship

SPIE, the international society for optics and photonics, has awarded Kishore Padmaraju the 2013 John Kiel Scholarship. The John Kiel Scholarship is SPIE's 2nd largest scholarship, and was established to honor SPIE founding member John Kiel, in recognition of his long-standing and significant contributions to the society. The scholarship is awarded annually to an outstanding student that demonstrates exceptional promise in making substantial contributions to the field of optics and engineering.


From 2011-2013, Kishore was the founding member and president of Columbia University's OSA/SPIE student chapter. In 2012, he was the co-director of the IONS-FOCUS student conference, held jointly between Columbia University and the City College of New York.


Press releases: [SPIE][Columbia Electrical Engineering]


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[May 2013] Lee Zhu featured in promotional IGERT video

Ph.D. student Lee Zhu has been featured in a promotional video for NSF's IGERT center, highlighting his research in silicon nanophotonics for next generation optical interconnects.




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[March 2013] 2013 OIDA Student Poster Contest

Cathy Chen and Lee Zhu presented papers at the 2013 OIDA (Optoelectronics Industry Development Association) Workshop for Stakeholders "Future Needs of "Scale-Out" Data Centers Student Poster Contest on March 17, 2013 in Anaheim, CA.

Cathy Chen won second place in the contest for her poster entitled "A Photonic Interconnection Network for Hardware Accelerator Enabled Utility Computing."

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[February 2013] 2013 Corning Outstanding Student Paper Competition

Kishore Padmaraju and Lee Zhu have been selected as a semi-finalists in the 2013 Corning Outstanding Student Paper Competition for their submissions to the Optical Fiber Communication (OFC) conference entitled, respectively, "Integrated Thermal Stabilization of a Microring Modulator," and "Pattern-Dependent Performance of Microring Modulators."

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[June 2012] Kishore Padmaraju receives IBM/SRC Ph.D. Fellowship

Kishore Padmaraju has been awarded a graduate fellowship from the Semiconductor Research Corporation (SRC) and IBM. Included in the award are expenses for tuition and fees, a cash stipend, and a $2000 annual award given to the department. This five-year commitment of support by GRC is made to help meet the continuing needs of GRC members for qualified personnel at the doctoral level and the increasing needs of North American colleges and universities for qualified professors.


Kishore received a B.S. in Electrical and Computer Engineering as well as a B.S. in Physics from the University of Rochester in 2009, where he was a co-recipient of the faculty award (awarded annually to the most promising ECE graduate). Throughout his academic career he has been a participant of numerous programs sponsored by the National Nanotechnology Infrastructure Network (NNIN), including an undergraduate research internship at the University of California, Santa Barbara, an international research internship at the Juelich Research Center, Germany, and an international workshop in nanophotonics held at the University of Campinas, Brazil.


Since 2009, he has been at Columbia University, where he earned an M.S. in Electrical Engineering in 2011. Under Professor Bergman, Kishore has been working at the Lightwave Research Laboratory, focusing his research on the harnessing of silicon nanophotonics for applications in telecommunications and microelectronics, authoring or co-authoring more than 15 journal publications and conference abstracts to date. He is also the founder and president of the Columbia University OSA chapter, an organization devoted to organized events, lectures, and conferences for the benefit of optics students at Columbia.


Press releases: [Columbia Electrical Engineering].


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[June 2012] Christine Chen receives SRC Master's Scholarship

Christine Chen, a 1st-year M.S./Ph.D. student in the Lightwave Research Laboratory, has been awarded a 2012 Master's Scholarship from the Semiconductor Research Corporation (SRC).


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 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.


The Master's Scholarship Program (MSP) from SRC provides the student with tuition and fees, stipend, and a $2,000 unrestricted gift to the student's faculty advisor in support of the award during the graduate study period. This program addresses issues of improving educational opportunities at the master's level for students in underrepresented minority categories. The objectives of the program are: (1) to encourage academically gifted U.S./permanent resident students in these populations to pursue graduate research in areas consistent with Global Research Collaboration (GRC) goals, and (2) to develop a cadre of highest quality minority candidates for doctoral study and hire by GRC companies.


Press releases: [Columbia Electrical Engineering].


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[March 2012] Aleksandr Biberman's research featured on the cover of "Reports on Progress in Physics"


Aleksandr Biberman's research was recently featured on the cover of "Reports on Progress in Physics." His invited review article, titled "Optical interconnection networks for high-performance computing systems" explore the potential of silicon photonic technology to be a key disruptive technology in computing and communication industries.









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[February 2012] Keren Bergman featured in Womensphere Leadership Forum Keynote

Professor Keren Bergman was recently featured at the Womensphere Leadership Forum in a keynote video.


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[February 2012] Keren Bergman featured in OFC/NFOEC video "Why is Datacom Now Part of OFC?"

Professor Keren Bergman was recently featured on the OFC/NFOEC website in a interview.



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[February 2012] Keren Bergman featured in video "Datacom Solutions You Need"

Professor Keren Bergman was recently featured on the OFC/NFOEC website in a interview.



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[February 2012] 2012 Corning Outstanding Student Paper Competition

Dan Brunina has been selected as a semi-finalist in the 2012 Corning Outstanding Student Paper Competition for his submission to the Optical Fiber Communication (OFC) conference entitled "Optically-Connected Memory with Error Correction for Increased Reliability in Large-Scale Computing Systems."

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[January 2012] Cathy Chen profiled by Columbia Engineering

Graduate student Cathy Chen was recently featured on the Columbia University Engineering website in a student profile video.




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[November 2011] HPC Wire interviews Professor Keren Bergman

In an article titled, "Integrated Photonics Coming of Age", HPC Wire interviews Professor Keren Bergman, and Nadya Bliss, of MIT Lincoln Laboratory, on the future role of integrated photonics in high-performance computing systems.


"At Columbia they have been developing an extensive suite of design tools for creating optically interconnected networks-on-chip that are physical layer accurate. This is the basis for their architectural design exploration and validation that the photonic technologies will function as intended."


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[October 2011] Keren Bergman named Charles Batchelor Professor of Electrical Engineering

"Keren Bergman, chair of Columbia Engineering's Department of Electrical Engineering, is a groundbreaking researcher whose work in dynamic optical data routing is tackling problems as diverse as relieving the information gridlock on the Internet and ensuring high-performance interconnects for communicating massive volumes of information at nearly the speed of light. As director of Columbia's Lightwave Research Laboratory, 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 efficiencies. These future platforms, driven by nanophotonic-enabled interconnectivity, and the enormous bandwidth advantage of dense wavelength division multiplexing, fundamentally transform the computation-communications architecture, creating systems poised to meet explosive information demands at all scales. Dr. Bergman received her Ph.D. from MIT in 1994 and worked in industry and academe before joinng Columbia. She is a fellow of both the OSA and the IEEE."


"The Charles and Rosanna Batchelor Memorial Chair of Electrical Engineering was established by an endowment given by the Charles and Rosanna Batchelor Memorial Inc. Charles Batchelor, one of Thomas Alva Edison's closest laboratory assistants, worked with Edison on projects in telegraphy, telephony, the phonograph, and electric lighting, and was an early mentor to legendary inventor and scientist Nikola Tesla."


Press Release: [Columbia Engineering]


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[September 2011] ECOC best student paper nomination

Kishore Padmaraju's abstract, "Error-Free Transmission of DPSK at 5 Gb/s Using a Silicon Microring Modulator", was a finalist for the best student paper at the 2011 European Conference on Optical Communications (ECOC), held in Geneva, Switzerland.


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[March 2011] 2011 Corning Outstanding Student Paper Competition

Johnnie Chan and Aleksandr Biberman have both been selected as semi-finalists in the 2011 Corning Outstanding Student Paper Competition for their submissions to the Optical Fiber Communication (OFC) conference entitled "Data Transmission Using Wavelength-Selective Spatial Routing for Photonic Interconnection Networks" and "CMOS-Compatible Scalable Photonic Switch Architecture Using 3D-Integrated Deposited Silicon Materials for High-Performance Data Center Networks", respectively


Caroline Lai was also selected as a semi-finalist in the 2011 Corning Outstanding Student Paper Competition for her submission entitled "20-Gb/s Power-Efficient CMOS-Driven Multimode Links", based on her work at IBM Research, T. J. Watson Research Center.


The Corning Outstanding Student Paper Competition recognizes innovation, research excellence and presentation abilities skills in optical communications. The award is endowed by a grant from Corning and administered by the OSA Foundation.


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[February 2011] The Record features Keren Bergman


The front page of the Columbia Record featured Keren Bergman's work on speeding up the internet, highlighting her research within CIAN and GENI.


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[November 2010] Caroline Lai receives IEEE Photonics Society Graduate Student Fellowship

Caroline Lai received a IEEE Photonics Society Graduate Student Fellowship at the IEEE Photonics Society 2010 Annual Meeting, held in Denver, CO, for her work on optical cross-layer communications.


The IEEE Photonics Society established the Graduate Student Fellowship Program to provide Graduate Fellowships to outstanding Society student members pursuing graduate education within the Society field of interest (electro-optics, lasers, photonics, optics, or closely related fields).


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[November 2010] IEEE Photonics Society 2010 Annual Meeting Best Student Paper Award

Caroline Lai and Daniel Brunina's paper, "Demonstration of 8x40-Gb/s Wavelength-Striped Packet Switching in a Multi-Terabit Capacity Optical Network Test-Bed," was a finalist for the best student paper at the IEEE Photonics Society 2010 Annual Meeting, held in Denver, CO.


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[September 2010] Aleksandr Biberman receives the Marconi Society Young Scholar Award

Aleksandr Biberman will receive the Marconi Society Young Scholar Award for his work in silicon photonics. The award will be presented at the Marconi Awards Dinner in Menlo Parkon October 15th. Now in its third year, the Marconi Young Scholar Awards Program recognizes outstanding young researchers in the fields of communications and the Internet.


Biberman is one of three students chosen this year from an international slate of candidates. Born in up-state New York, he received his B.S. degree in electrical, computer and systems engineering from Rensselaer Polytechnic Institute, Troy, NY, in 2006, and his M.S. degree in electrical engineering from Columbia University in 2008. Currently a Ph.D. candidate in the Department of Electrical Engineering at Columbia University, his work in the Lightwave Research Laboratory is on silicon photonic interconnects for chip-scale high-performance computing systems and memory access networks.


"Marconi Society Young Scholars have demonstrated extraordinary promise and already have made an impact in their fields of research," said Robert Lucky, chairman of the Marconi Society. "We look for candidates who show the potential to win the Marconi Prize-the equivalent of the Nobel Prize in communications science-at some point in the future. As a point of reference, Marconi Fellows have been at the forefront of every modern advance in telecommunications and the Internet."


Press releases: [Marconi Society][Bloomberg][Columbia Electrical Engineering].


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[May 2010] Professor Keren Bergman, Chair of the 2010 Conference on Lasers and Electro-Optics (CLEO) Subcommittee on Micro- and Nano-Photonics Devices

Conference on Lasers and Electro-Optics (CLEO) and the Quantum Electronics and Laser Science Conference (QELS)


The Conference on Lasers and Electro-Optics (CLEO) is held in conjunction with the Quantum Electronics and Laser Science Conference (QELS). CLEO/QELS attracts leaders in the fields of lasers, optical devices, optical fibers, photonics and innovative approaches in such fields as: laser spectroscopy, ultrafast optics, nonlinear optics, optical detectors, optical modulators, optical pulses, and quantum mechanics.


CLEO/QELS has always been known as the leading event for early stage lasers and electro-optics. The peer-reviewed program is second to none. Attendees gather from around the world to hear from the foremost authorities. This year CLEO expands to include emerging applications of lasers and electro-optical technology.


CLEO/QELS features plenary sessions, invited speakers, contributed papers, and short courses on the most important technical developments—basic research in electro-optics, innovative developments in laser science, and commercial applications in photonics.




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[May 2010] 2010 Maiman Outstanding Student Paper Competition

Noam Ophir has been selected as a semi-finalist in the 2010 Maiman Outstanding Student Paper Competition for his submission to the Conference on Lasers and Electro-Optics (CLEO) entitled "Broadband Continuous Wavelength Conversion of 10-Gb/s Data in Silicon Waveguides Spanning S-, C-, and L-Bands".


The Maiman Student Paper Competition honors Theodore Maiman for his amazing invention, the first working laser, and his other outstanding contributions to optics and photonics, and recognizes the innovation, research excellence and presentation skills in the areas of laser technology and electro-optics of a student. The award is endowed by a grant from by HRL Laboratories, LLC, IEEE Photonics Society (formerly LEOS) and APS Division of Laser Science and is administered by the OSA Foundation.


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[March 2010] 2010 Corning Outstanding Student Paper Competition

Johnnie Chan has been selected as a semi-finalist in the 2010 Corning Outstanding Student Paper Competition for his submission to the Optical Fiber Communication (OFC) conference entitled "Architectural Design Exploration of Chip-Scale Photonic Interconnection Networks through Physical-Layer Analysis".


The Corning Outstanding Student Paper Competition recognizes innovation, research excellence and presentation abilities skills in optical communications. The award is endowed by a grant from Corning and administered by the OSA Foundation.


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[February 2010] Nature features the work of Keren Bergman

Nature Publishing Group: Nature News Feature; Networking: Four ways to reinvent the Internet

Global Environment for Network Innovations (GENI)

Center for Integrated Access Networks (CIAN)


Professor Keren Bergman's work was highlighted in the February 4, 2010 issue of Nature, in the News Feature entitled "Networking: Four ways to reinvent the Internet." The article focuses ways to fix the Internet as it struggles to keep up with the ever-increasing demands placed on it. With applications such as cloud computing, streaming audio and video, and ubiquitous mobile devices, the Internet's rapidly rising flood of information has been dealt with by updating the software and expanding the size of the data pipes. The result has been a rising sense of urgency within the networking research community - a conviction that the decades-old Internet architecture is reaching the limits of its admittedly remarkable ability to adapt and needs a fundamental overhaul. Funding initiatives such as the Global Environment for Network Innovations (GENI) have encouraged researchers to test out a plethora of ideas for reinventing the Internet.


Professor Bergman’s work centers on making the pipes adaptable. The problem with the bigger-and-bigger-data-pipe approach to dealing with the Internet's growth is that it perpetuates a certain dumbness in the system, says electrical engineer Keren Bergman of Columbia University in New York. Right now, there is no way for a user to say: “This ultrahigh-resolution video conference I’m in is really important, so I need to send the data with the least delay and highest bandwidth possible”, or “I’m just doing routine e-mail and web surfing at the moment, so feel free to prioritize other data”. The network treats every bit of data the same. There is also no way for the Internet to minimize redundancy. If 1,000 people are logged into a massively multiplayer role-playing game such as World of Warcraft, the network has to provide 1,000 individual data streams, even though most are close to identical.


The result is a lot of wasted capacity, says Bergman, not to mention a lot of wasted money for users who have to pay extra for high-capacity data connections that they will need only occasionally. If the Internet could just adapt intelligently to what its users are trying to do, she says, it could run much more data though the pipes than it does now, thereby giving users much more capacity at a lower cost.


This is easier said than done, however, because the dumbness is deliberate. In an effort to simplify the engineering, Bergman explains, the architecture of the Internet is carefully segregated into 'layers' that take one another for granted. This means that application programmers, for example, don't have to worry about physical data connections when they are developing new software for streaming video or online data processing; they can just assume that the bits will flow. Likewise, engineers working on the physical connections can ignore what the applications are doing. And neither has to worry about in-between layers such as TCP/IP (Transfer Control Protocol/Internet Protocol): the fundamental Internet software that governs how digital messages are broken up into 'packets', routed to their destination, then reassembled.


But this clean separation also stops the layers from communicating with one another, says Bergman, which is exactly what they need to do if the data flow is to be managed intelligently. Working out how to create such a 'cross-layer' networking architecture is therefore one of the central goals of Bergman's Lightwave Research Laboratory at Columbia. The idea is to provide feedbacks between the physical data connection and the higher-level routing and applications layers, then to use those feedbacks to help the layers adjust to one another and optimize the network's performance.


This kind of adaptability is not new in networking, says Bergman, but it has been difficult to implement for the fibre-optic cables that are carrying more and more of the Internet's traffic. Unlike standard silicon electronics, optical data circuits are not easily programmable. As a result, many of the dozen projects now under way in her lab aim to integrate optics with programmable electronic systems.


Bergman's lab is also a key member of the NSF-funded Center for Integrated Access Networks (CIAN), a nine-university consortium headquartered at the University of Arizona in Tucson. Her group's efforts have helped to drive many of the technology development projects at the centre, which hopes to ultimately deliver data to users at rates that approach 10 gigabits a second, roughly 1,000 times faster than the average household broadband connection today. "The challenges are to deliver that information at a reasonable cost in terms of money and power," says Bergman.


This article is in reference to the optical cross-layer communications research being performed at the Lightwave Research Laboratory, within the scope of CIAN and GENI.


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[August 2009] Columbia University & GENI: Embedding Real-time Substrate Measurements for Cross-layer Communications (ERM)

Global Environment for Network Innovations (GENI) News

Global Environment for Network Innovations (GENI) Front Page

Columbia University Department of Electrical Engineering News & Events

Global Environment for Network Innovations (GENI): Embedded Real-Time Measurements (ERM) Research at the Lightwave Research Laboratory


The GENI ERM team at Columbia University, led by Prof. Keren Bergman, Director of the Lightwave Research Laboratory, is creating innovative cross-layer measurement capabilities that will help free GENI researchers from the constraints of today’s strictly layered Internet architecture.


By providing deeper exposure to physical layer measurement and protocol information, the ERM team will help enable GENI researchers to realize well instrumented experiments supporting new network architectures that cut across today’s protocol layers. The ERM team has developed initial specifications for cross-layer communications that will allow bi-directional information exchange between protocol layers and enable holistic optimization of the network stack from optical network substrates all the way up to the application, and are now working with other GENI prototyping projects to integrate their design into the overall GENI control and measurement framework.


To enable this top-to-bottom communication, the ERM team is developing GENI-compatible, real-time embedded measurement capabilities; enabling deeper exposure and transparency to network substrates for cross-layer information exchange and user access; and integrating their prototypes with GENI’s ORCA control plane to dynamically monitor optical substrate performance and allow for cross-layer control and management decisions based on the optical layer configuration and performance.


Prof. Bergman’s team has already achieved several important milestones. The team first evaluated the GENI system design’s capabilities to embed real-time measurements and assessed requirements for real-time user access to data measurements across a diverse set of heterogeneous technologies. Then they developed two sets of specifications; one for supporting real-time measurements within the network substrate and another for network protocols that access cross-layer measurements. They have also developed models using the ns-2 simulator to quantify the performance improvements that their techniques enable. Finally, the team has proposed a Unified Measurement Framework (UMF) that includes well-defined interfaces between the GENI control plane and measurement devices.


Now the ERM team is collaborating with the GENI prototype projects at the Renaissance Computing Institute (RENCI), Duke University, and the University of Houston for potential integration of their real-time measurement system into the ORCA-BEN control framework. Before the end of the year, the ERM team expects to contribute an experimental use case to GENI working groups to further validate the proposed cross-layer communications schemes.


GENI Mission & Vision


Global Environment for Network Innovations (GENI)


The Global Environment for Network Innovations (GENI) is a unique virtual laboratory for at-scale networking experimentation where the brightest minds unite to envision and create new possibilities of future internets. The GENI mission is to:



About the Global Environment for Network Innovations (GENI)


Global Environment for Network Innovations (GENI)


GENI, a virtual laboratory for exploring future internets at scale, creates major opportunities to understand, innovate and transform global networks and their interactions with society. Dynamic and adaptive, GENI opens up new areas of research at the frontiers of network science and engineering, and increases the opportunity for significant socio-economic impact. GENI will:



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[August 2009] Professor Keren Bergman Chairs Major Conference

The Fu Foundation School of Engineering & Applied Science of Columbia University News


Electrical Engineering Professor Keren Bergman will chair a national conference that for the first time will be hosted outside California’s Silicon Valley.


The Hot Interconnects conference will be held in Lower Manhattan Aug. 25-27. Bergman said there is a good rationale for the move to Wall Street after spending its first 16 years on the Stanford University campus.


"The main reason is that the technology we cover at this conference related to high-performance networking is becoming extremely relevant to Wall Street," she says. "In fact, our conference is going to be hosted by Credit Suisse – attracting many of the top Wall Street technologists and traders. The key topic is related to high-frequency trading."


A preview of the conference was recently published on the EE Times Web site. The New York Times explored high-frequency trading in the July 23 story "Stock Traders Find Speed Pays, in Milliseconds."


"This is becoming a big topic," Bergman says, "from technology, finance, and political aspects."


She describes Hot Interconnects as "the premier international forum for researchers and developers of state-of-the-art hardware and software architectures and implementations for interconnection networks of all scales, ranging from on-chip interconnects to wide-area networks." Leaders from industry, academia, and government laboratories will be attending the conference to interact with individuals at the forefront of these fields.


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[May 2009] Professor Keren Bergman, Chair of the 2009 Conference on Lasers and Electro-Optics (CLEO) Subcommittee on Micro- and Nano-Photonics Devices

Conference on Lasers and Electro-Optics (CLEO) and the International Quantum Electronics Conference (IQEC)


About CLEO/IQEC: Global Premier Event


The Conference on Lasers and Electro-Optics (CLEO) and The International Quantum Electronics Conference (IQEC) is the premier forum for scientific and technical optics in the world today. The 5-day event features high-quality, cutting-edge optics and photonics programming, tutorials, special symposia, Short Courses and a full program of networking and social events. PhotonXpo—The Exhibit at CLEO, also debuting this year, will feature 350 participating companies showcasing every facet of the optics and photonics industry.






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[March 2009] Optical Fiber Communication Conference Features Breakthroughs in Next-Generation Ethernet, Metamaterials, Optical Data Processing and More

New Routers Marry Light and Silicon to Cut Down on Power and Ramp Up Speed


American Association for the Advancement of Science (AAAS) EurekAlert! Press Release

Optical Fiber Communication Conference and Exposition (OFC) and the National Fiber Optic Engineers Conference (NFOEC) Press Release


Tomorrow's ultra-fast broadband may be limited not by the speed at which data can be sent, but by the electrical power needed to route data to millions of users. A new technology that weds light and silicon hopes to keep up the massive connectivity of a faster Internet by cutting down on its power consumption.


To send a single stream of data to many computers, networks have to "multicast," sending out multiple copies of a single input signal carried by an optical fiber. With electronic switching, this requires converting optical data into digital electronic data, making copies in the electronic domain, and converting electronic copies back into optical data. The amount of power that electronic multicasters require to do this is large and will increase exponentially as the speed of data transmission goes up, an energy bottleneck for the industry.


To solve this problem, a team of researchers at Columbia University and Cornell University has built a purely optical device that cuts out the energy-hungry electronic middleman. They use a pulsing laser to clone the light coming in from an optical fiber into eight identical waves going out, a process called "four-wave mixing." This all happens in silicon – one of the most efficient materials for this process – directly embedded on a computer chip. So though the multicasting itself doesn't require electronics, other electronic components, like switches, could be installed on the chip to modify the signal as it passes through.


The device can handle speeds of more than 160G and draws several orders of magnitude less power than current electronic devices. "We're looking ahead to next-generation networks that will run at terabits per second," says Keren Bergman of Columbia University. "You just can't do that kind of multicasting in electronics."


This press release is in reference to Aleksandr Biberman's OFC conference talk "First Demonstration of On-Chip Wavelength Multicasting".


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[March 2009] 2009 Corning Outstanding Student Paper Competition

Aleksandr Biberman and Benjamin Lee have both been selected as semi-finalists in the 2009 Corning Outstanding Student Paper Competition for their submissions to the Optical Fiber Communication (OFC) conference entitled "First Demonstration of On-Chip Wavelength Multicasting" and "Multi-Wavelength Message Routing in a Non-Blocking Four-Port Bidirectional Switch Fabric for Silicon Photonic Networks-on-Chip", respectively.


The Corning Outstanding Student Paper Competition recognizes innovation, research excellence and presentation abilities skills in optical communications. The award is endowed by a grant from Corning and administered by the OSA Foundation.


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[February 2009] Professor Keren Bergman, Editor of the Journal of Optical Communications and Networking (JOCN)

Journal of Optical Communications and Networking (JOCN)


OSA and IEEE are pleased to announce a copublishing partnership that merges JON with ComSoc's Supplement on Optical Networking and Communications, which is published with the Journal on Selected Areas in Communications. The new journal is called the Journal of Optical Communications and Networking (JOCN) ISSN: 1943-0620 and is accessible through OSA's Optics InfoBase as well as IEEE Xplore and ComSoc's Digital Library, thus providing expanded exposure for JOCN authors.


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[December 2008] EE's Keren Bergman Receives Honors

The Fu Foundation School of Engineering and Applied Science of Columbia University


Professor Keren Bergman of the Department of Electrical Engineering has been elected a Fellow of the Institute of Electrical and Electronics Engineers (IEEE), the world's leading professional association for the advancement of technology. She received this honor, one of the Institute's most prestigious, for her contributions to development of optical interconnection and transport networks.


In addition, Bergman was named a recipient of the 2008 IBM Faculty Award for her research on nanophotonic networks-on-chip. The IBM Faculty Awards program is a competitive, worldwide program intended to foster collaboration between researchers at leading universities around the world and those in IBM research, development and services organizations.


Bergman is director of the Lightwave Research Laboratory. She and her research group have recently welcomed Dr. Franz Fidler, the recipient of the prestigious Max Kade Postdoctoral Fellowship, to the group. His efforts will be focused on Cross-Layer Communications in Optical Networks, which is in collaboration with Dr. Peter Winzer of Bell Research Laboratories, Lucent-Alcatel.


The Bergman group has received two recent research grants. The first is a three-year award from Intel Corporation to sponsor research on Multi-wavelength Striped Optical Interconnect for High Performance Cluster Computing. This research will be carried out in collaboration with Dr. Madeleine Glick of Intel Research. The second grant is to participate in developing the Global Environment for Network Innovations (GENI) suite of experimental network research infrastructure sponsored by the National Science Foundation.


The Columbia team led by Bergman was selected as one of the 29 academic/industrial research teams to build, integrate, and begin to operate the first prototypes of the GENI suite of network research infrastructure. Their project at Columbia will focus on embedding real-time substrate measurements for cross-layer communications. As envisioned by the community, this suite will support a wide range of network science and engineering experiments such as new protocols and data dissemination techniques running over a substantial fiber optic infrastructure with next-generation optical switches, novel high-speed routers, city-wide experimental urban radio networks, high-end computational clusters, and sensor grids. All infrastructures are envisioned to be shared among a large number of individual, simultaneous experiments with extensive instrumentation that makes it easy to collect, analyze, and share real measurements.


In other Bergman research group news, first year graduate student Nava Chitrik was awarded both the AT&T Research Fellowship and the NSF Graduate Research Fellowship.


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[November 2008] Professor Keren Bergman and Professor Steven Nowick Named IEEE Fellow

Columbia University Department of Electrical Engineering News & Events


Congratulations to Prof. Keren Bergman and Prof. Steven Nowick for their elevation to IEEE Fellow! Prof. Bergman was lauded for her contributions to development of optical interconnection and transport networks, and Prof. Nowick for his contributions to asynchronous and mixed-timing integrated circuits and systems. Each year, following a rigorous evaluation procedure, the IEEE Fellow Committee recommends a select group of recipients for Fellow elevation, one of the Institute’s most prestigious honors.


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[October 2008] Professor Keren Bergman Receives Intel Grant

Columbia University Department of Electrical Engineering News & Events


Prof. Bergman received a 3-year award grant from Intel Corporation in sponsorship of her research on "Multi-wavelength Striped Optical Interconnect for High Performance Cluster Computing." This research will be carried out in collaboration with Dr. Madeleine Glick of Intel Research.


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[October 2008] Professor Keren Bergman Receives 2008 IBM Faculty Award

Columbia University Department of Electrical Engineering News & Events


Prof. Bergman is a recipient of the 2008 IBM Faculty Award for her research on nanophotonic networks-on-chip. This award was sponsored by Dr. Jeff Kash at the IBM Research Division, T.J. Watson Research Center. The IBM Faculty Awards is a competitive worldwide program intended to foster collaboration between researchers at leading universities worldwide and those in IBM research, development and services organizations.


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[September 2008] Professor Keren Bergman to Take Part in Developing Next-Gen Integrated Access Networks

Columbia University Department of Electrical Engineering News & Events

University of Arizona Office of University Communications, UANews


The National Science Foundation has awarded a five-year, $18.5 million grant to establish an engineering research center based at The University of Arizona. The center, or ERC, will focus on removing one of the last bottlenecks in the Internet by developing optoelectronic technologies for high-bandwidth, low-cost, widespread access networks. Together with USC Professor Alan Willner, Professor Keren Bergman will lead the system and networking research thrust of the center.


The UA and nine partner universities will collaborate as the Center for Integrated Access Networks, or CIAN, to create an advanced optical access network capable of delivering data more than a thousand times faster to users at lower cost than they now pay to connect to information data bases and communication networks.


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