Title
Towards High-Performance and Power-Efficient Optical NoCs Using Silicon-in-Silica Photonic Components
Abstract
Networks-on-Chips (NoCs) are meeting the growing inter-tile communication needs of multicore chips. However, achieving system scalability by utilizing hundreds of cores on-chip requires high performance, yet energy-efficient on-chip interconnects. As electrical interconnects are marred by high energy-to-bandwidth costs, threatening multicore scalability, on-chip nanophotonics, which offer high throughput, yet energy-efficient communication, are an alternative attractive solution. In this paper we consider silicon nanophotonic components that are embedded completely within the silica (SiO2) substrate as opposed to prior-art that utilizes die on-surface silicon nanophotonics. As nanophotonic components now reside in the silica substrate's subsurface, a greater portion of a chip's real estate can be utilized by cores and routers, while non-obstructive interconnect geometries offering higher network throughput can be implemented. First, we show using detailed simulations based on commercial tools that such silicon-in-silica (SiS) structures are feasible, and then demonstrate our proof of concept by utilizing a hybrid SiS-based photonic mesh-diagonal links topology that provides both higher effective throughput and throughput-to-power ratio versus prior-art.
Year
DOI
Venue
2015
10.1109/INA-OCMC.2015.12
Interconnection Network Architectures: On-Chip, Multi-Chip
Keywords
Field
DocType
elemental semiconductors,integrated optoelectronics,nanophotonics,network-on-chip,optical interconnections,silicon,silicon compounds,Si-SiO2,high-performance optical NoC,hybrid SiS-based photonic mesh-diagonal links topology,nonobstructive interconnect geometries,power-efficient optical NoC,silica substrate,silicon nanophotonic components,silicon-in-silica photonic components,silicon-in-silica structures,Nanophotonics,Networks-on-Chips,Photonic Interconnects,Silicon-in-Silica
Hybrid silicon laser,Computer science,Nanophotonics,Chip,Electronic engineering,Throughput,Interconnection,Multi-core processor,Photonics,Scalability
Conference
Citations 
PageRank 
References 
0
0.34
9
Authors
4
Name
Order
Citations
PageRank
elena kakoulli1365.37
Vassos Soteriou242127.62
Charalambos Koutsides321.38
Kyriacos Kalli442.87