A Power Efficient and Compact Optical Interconnect for Network-on-Chip

Author

Zheng Chen ; Huaxi Gu ; Yintang Yang ; Luying Bai ; Hui Li

Author_Institution

State Key Lab. of Integrated Service Networks, Xidian Univ., Xi´an, China

Volume

13

Issue

1

fYear

2014

fDate

Jan.-June 6 2014

Firstpage

5

Lastpage

8

Abstract

Optical interconnect is a promising alternative to substitute the electrical interconnect for intra-chip communications. The topology of optical Network-on-Chip (ONoC) has a great impact on the network performance. However, the size of ONoC is limited by the power consumption and crosstalk noise, which are mainly resulted from the waveguide crossings in the topology. In this paper, a diagonal Mesh topology (DMesh) is proposed to relieve the limitation of scalability by reducing the number of waveguide crossing, which is only 20% that of Mesh. In addition, the number of optical routers in DMesh is less than half of that in Mesh-based ONoC. Due to its compact architecture and favorable scalability, DMesh topology is suitable for large-scale ONoC design.

Keywords

integrated optoelectronics; network-on-chip; optical interconnections; power consumption; DMesh topology; compact optical interconnect; crosstalk noise; diagonal mesh topology; intra-chip communications; large-scale ONoC design; mesh-based ONoC; network performance; optical network-on-chip; optical routers; power consumption; power efficient interconnect; waveguide crossings; Network topology; Optical interconnects; Optical routers; Wavelength division multiplexing; Topology; multiprocessors; optical router; topology; wavelength division multiplexing;

fLanguage

English

Journal_Title

Computer Architecture Letters

Publisher

ieee

ISSN

1556-6056

Type

jour

DOI

10.1109/L-CA.2013.5

Filename

6506842