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AP483 & AMO Seminar presents "Photonics in Computing"

Photonics in Computing
Monday, October 14, 2019 - 4:00pm
Spilker 232
S. J. Ben Yoo (Univ. of California, Davis)
Abstract / Description: 

In the 1980s, optical computing emerged as an extremely active area of research promising immense parallelism and signal processing capabilities. Optical neural networks exploited Fourier transform, convolution, and nonlinear elements to demonstrate matrix multiplication, pattern recognition, and associative memory, capabilities. By the 1990s, however, the field of optical computing died. Psaltis wrote in his 1990 article that optical computing was dead because of (a) the lack of practical devices that can be integrated and because there was (2) insufficient knowledge of complex neural networks. Fast-forwarding to today, we find that (a) integrated circuits can contain heterogeneous nano-scale photonic and electronic components utilizing semiconductor industry ecosystems, and (b) new artificial neural network algorithms can imitate or even surpass the capabilities of humans. We discuss possible new directions in computing exploiting the nonlinearity of nanoelectronics and the parallelism of nanophotonics. We will cover two platforms: (1) brain-inspired spiking-photonic-neuromorphic computing utilizing embedded 3D photonic-electronic integrated circuits and (2) photonic-FPGA utilizing reconfigurable 3D photonics. Prospects of future computing systems including such photonic computing modules will also be discussed.


AP 483 Optics and Electronics Seminar

Prof. Olav Solgaard, Organizer Fall 2019


AMO Seminar Sub-Series first Monday of each month)

Monica Schleier-Smith, Organizer Fall 2019



S. J. Ben Yoo is a Distinguished Professor at the University of California at Davis (UC Davis). His research at UC Davis includes 2D/3D photonic integrated systems, neuromorphic computing, cognitive networks, photonic information processing, non-traditional imaging, optical arbitrary waveform generation, and elastic optical networking. Prior to joining UC Davis in 1999, he was a Senior Research Scientist at Bellcore, leading technical efforts in integrated photonics, optical networking, and systems integration. His research activities at Bellcore included the next-generation Internet, reconfigurable multi-wavelength optical networks (MONET), wavelength interchanging cross-connects, wavelength converters, vertical-cavity lasers, and high-speed modulators. He led the MONET testbed experimentation efforts, and participated in 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 (BS'84, MS'86, PhD'91, Stanford University). Prof. Yoo is Fellow of both IEEE (2007) and OSA (2007) and a recipient of the DARPA Award for Sustained Excellence (1997), the Bellcore CEO Award (1998), the Mid-Career Research Faculty Award (2004 UC Davis), the Senior Research Faculty Award (2011 UC Davis), NASA innovative advanced concepts fellowship (2014 NASA), and a number of best paper awards and best dissertation mentoring awards.