IEEE SSCS DL Talk: Scaling up silicon photonic-based accelerators: Challenges and opportunities

#Silicon #Photonics

Dr. Sudip Shekhar from the University of British Columbia will give an in-person talk, the abstract of which is below:


Digital accelerators in the latest generation of CMOS processes support multiply, and accumulate (MAC) operations at energy efficiencies spanning 10–100 fJ/Op. However, the operating speed for such MAC operations is often limited to a few hundreds of MHz. Optical or optoelectronic MAC operations on today’s silicon photonic IC platforms can be realized at a speed of tens of GHz, leading to much lower latency and higher throughput. In this talk, I will describe the integrated silicon photonic MAC circuits based on Mach–Zehnder and microring structures. I will present the bounds on energy efficiency and scaling limits for N × N MAC networks based on the optical and electrical link budget, as well as some packaging concerns related to the CMOS/photonic co-integration. I will also describe research directions that can overcome the current limitations.


  Date and Time




  • Date: 28 Jun 2022
  • Time: 10:00 AM to 11:30 AM
  • All times are (UTC-05:00) Eastern Time (US & Canada)
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  • 1515 Ste-Catherine West
  • Montreal, Quebec
  • Canada H3G 1M8
  • Building: EV
  • Room Number: 1.162

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  • Starts 10 June 2022 10:26 AM
  • Ends 28 June 2022 10:00 AM
  • All times are (UTC-05:00) Eastern Time (US & Canada)
  • No Admission Charge


Dr. Sudip Shekhar Dr. Sudip Shekhar of The University of British Columbia


Scaling up silicon photonic-based accelerators: Challenges and opportunities


Sudip Shekhar received his B.Tech. degree from the Indian Institute of Technology, Kharagpur, and the Ph.D. degree from the University of Washington, Seattle.

From 2008 to 2013, he was with the Circuits Research Laboratory, Intel Corporation, Hillsboro, OR, USA, where he worked on high-speed I/O architectures. He is now an Associate Professor of Electrical and Computer Engineering with The University of British Columbia, Vancouver. His current research interests include circuits for electrical and optical interfaces, frequency synthesizers, and wireless transceivers.

Dr. Shekhar was a recipient of the Young Alumni Achiever Award by IIT Kharagpur in 2019, the IEEE Transactions on Circuit and Systems Darlington Best Paper Award in 2010 and a co-recipient of IEEE Radio-Frequency IC Symposium Student Paper Award in 2015. He serves on the technical program committee of IEEE International Solid-State Circuits Conference (ISSCC), Custom Integrated Circuits Conference (CICC) and Optical Interconnects (OI) Conference.