NDLI: Holistic comparison of optical routers for chip multiprocessors

Content Provider	IEEE Xplore Digital Library
Author	Yaoyao Ye Xiaowen Wu Jiang Xu Wei Zhang Nikdast, M. Xuan Wang
Copyright Year	2012
Description	Author affiliation: Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology (Yaoyao Ye; Xiaowen Wu; Jiang Xu; Wei Zhang; Nikdast, M.; Xuan Wang)
Abstract	Network-on-chip (NoC) can improve the performance, power efficiency, and scalability of chip multiprocessors (CMPs). However, traditional NoCs using metallic interconnects consume a significant amount of power to deliver high communication bandwidth required in the near future. Optical NoCs are based on CMOS-compatible optical waveguides and optical routers, and promise significant bandwidth and power advantages. In this work, we review different designs of 5×5 and 4×4 optical routers for mesh or torus-based optical NoCs, and compare them for cost of optical resources and optical power loss. Besides, we use a 8×8 mesh-based optical NoC as a case study and analyze the thermal-induced power overhead while using different optical routers. Results show that the number of switching stages in an optical link directly affects the total optical power loss under thermal variations. By using passive-routing optical routers, the maximum number of switching stages in a XY-routing path is minimized to three, and the thermal-induced power overhead in the optical NoC is less than the matched networks using other routers.
Starting Page	1
Ending Page	5
File Size	439720
Page Count	5
File Format	PDF
ISBN	9781467321440
ISSN	21635048
e-ISBN	9781467321457
e-ISBN	9781467321433
DOI	10.1109/ICASID.2012.6325348
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-08-24
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical losses optical router Optical switches Optical device fabrication Chip multiprocessor Optical fiber networks Optical sensors Optical waveguides optical network-on-chip
Content Type	Text
Resource Type	Article

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