IEEE Student Chapter Seminar: "Switching
technologies for spatially and spectrally flexible optical networks" by
Dr. Dan Marom
Tuesday, March 17, 2015 11:00 AM to 12:00 PM
CREOL Room 103
CREOL Room 103
Celebrating the International Year of Light 2015
Prof. Dan M. Marom
Abstract:
Today’s fiber-optic communication networks span the globe,
delivering broadband information across all market segments and connecting
massive datacenters, businesses, and individual user’s homes. As such,
optical networks must operate reliably and efficiently when transporting the
massive information capacity of the Internet, allowing networks to adapt to
growing and changing demand flows and occasional interruptions. Wavelength-selective
switches (WSS) have been instrumental in fulfilling this role, enabling
all-optical spectral routing of individual wavelength-division multiplexed
(WDM) communication channels at network nodes.
The recent introduction of space-division multiplexing (SDM)
to the optical communication domain with new fiber types, in order to
economically support the exponentially growing capacity, necessitates
complementary components for implementing SDM-WDM optical networks. SDM is
typically realized with either multi-core or few-mode fibers and great capacity
achievements have been demonstrated to-date in each fiber solution.
Wavelength-selective switching functionality for these two fiber types has
recently been introduced. A joint-switching WSS concept has been realized for
multi-core fibers, enabling information to be encoded and routed on the SDM-WDM
optical network as a spatial super-channel (single wavelength channel spanning
multiple cores). This spatial super-channel routing concept with
joint-switching WSS also extends to few-mode fibers. Hence a single WSS can
then be used in analogous fashion to the single-mode fiber networks, thereby
heralding the cost-savings benefits of SDM. A WSS with direct few-mode fiber
interfaces has been demonstrated with the few-mode beams routed in free-space
just as the single mode beam does in a conventional WSS. A study on the pass
band filtering effect and mode mixing due to the spectral switching of
dispersed components revealed the spatial-spectral interplay in the
mode-dependent loss attributes of the few-mode fiber WSS. Such advanced WSS
prototypes will serve the next generation transport networks when SDM is fully
adopted by carriers.
Biography:
Dan M. Marom is an Associate Professor in the Applied
Physics Department at Hebrew University, Israel, heading the Photonic Devices
Group. He received the B.Sc. Degree in Mechanical Engineering and the M.Sc.
Degree in Electrical Engineering, both from Tel-Aviv University, Israel, in
1989 and 1995, respectively, and was awarded a Ph.D. in Electrical Engineering
from the University of California, San Diego (UCSD), in 2000.
His 20 year research career in optical communications
started during his Master’s degree, where he investigated free-space,
polarization rotation based bypass-exchange (2×2) space switches, which later
on led to the founding of a start-up company. In his doctoral dissertation he
demonstrated real-time optical signal processing using parametric
nonlinearities applied to spectrally dispersed light, for possible modulation
and detection schemes in serial ultrafast communications (tera-baud rate and
beyond). From 2000 until 2005, he was a Member of the Technical Staff at the
Advanced Photonics Research Department of Bell Laboratories, Lucent
Technologies, where he invented and headed the research and development effort
of MEMS based wavelength-selective switching solutions for optical networks.
Since 2005, he has been with the Applied Physics Department, Hebrew University,
Israel, where he is now an Associate Professor leading a research group
pursuing his research interests in creating photonic devices and sub-systems
for switching and manipulating optical signals, in guided-wave and free-space
optics solutions using light modulating devices, nonlinear optics, and compound
materials.
Prof. Marom is a Senior Member of the IEEE Photonics
Society, and a Member of the Optical Society of America. From 1996 through
2000, he was a Fannie and John Hertz Foundation Graduate Fellow at UCSD, and
was a Peter Brojde Scholar in 2006-2007. He currently serves as Senior Editor
for Photonics Technology Letters, handling photonic devices related
submissions.
For additional information:
Ruidong Zhu
407-823-4923
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