Scaling up silicon photonic-based accelerators: Challenges and opportunities
Open Access
- 1 February 2022
- journal article
- research article
- Published by AIP Publishing in APL Photonics
- Vol. 7 (2), 020902
- https://doi.org/10.1063/5.0070992
Abstract
Digital accelerators in the latest generation of complementary metal–oxide–semiconductor 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 SOI-based silicon photonic integrated circuit platforms can be realized at a speed of tens of GHz, leading to much lower latency and higher throughput. In this Perspective, we study the energy efficiency of integrated silicon photonic MAC circuits based on Mach–Zehnder modulators and microring resonators. We describe the bounds on energy efficiency and scaling limits for N × N optical networks with today’s technology based on the optical and electrical link budget. We also describe research directions that can overcome the current limitations.Keywords
Funding Information
- Natural Sciences and Engineering Research Council of Canada
This publication has 87 references indexed in Scilit:
- Connecting Silicon Photonic Circuits to Multicore Fibers by Photonic Wire BondingJournal of Lightwave Technology, 2014
- Broadcast and Weight: An Integrated Network For Scalable Photonic Spike ProcessingJournal of Lightwave Technology, 2014
- High-sensitivity 10 Gbps Ge-on-Si photoreceiver operating at λ ~155 μmOptics Express, 2010
- Silicon microring resonators with 1.5-μm radiusOptics Express, 2008
- A Dispersion Management Scheme for Reducing SOA-Induced Crosstalk in WDM LinksJournal of Lightwave Technology, 2004
- OC-192 transmitter and receiver in standard 0.18-μm CMOSIEEE Journal of Solid-State Circuits, 2002
- Theory and Measurement Techniques for the Noise Figure of Optical AmplifiersOptical Fiber Technology, 2000
- Experimental realization of any discrete unitary operatorPhysical Review Letters, 1994
- 1.0 dB low-loss coupling of laser diode to single-mode fibre using a planoconvex graded-index rod lensElectronics Letters, 1986
- Singular value decomposition and least squares solutionsNumerische Mathematik, 1970