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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 13 — Jun. 22, 2009
  • pp: 10990–10997

High-speed optical switch fabrics with large port count

Yong-Kee Yeo, Zhaowen Xu, Dawei Wang, Jianguo Liu, Yixin Wang, and Tee-Hiang Cheng  »View Author Affiliations

Optics Express, Vol. 17, Issue 13, pp. 10990-10997 (2009)

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We report a novel architecture that can be used to construct optical switch fabrics with very high port count and nanoseconds switching speed. It is well known that optical switch fabrics with very fast switching time and high port count are challenging to realize. Currently, one of the most promising solutions is based on a combination of wavelength-tunable lasers and the arrayed waveguide grating router (AWGR). To scale up the number of ports in such switches, a direct method is to use AWGRs with a high channel count. However, such AWGRs introduce very large crosstalk noise due to the close wavelength channel spacing. In this paper, we propose an architecture for realizing a high-port count optical switch fabric using a combination of low-port count AWGRs, optical ON-OFF gates and WDM couplers. Using this new methodology, we constructed a proof-of-concept experiment to demonstrate the feasibility of a 256×256 optical switch fabric. To our knowledge, this port count is the highest ever reported for switch fabrics of this type.

© 2009 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2340) Fiber optics and optical communications : Fiber optics components
(200.6715) Optics in computing : Switching
(060.6719) Fiber optics and optical communications : Switching, packet

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: April 13, 2009
Revised Manuscript: June 7, 2009
Manuscript Accepted: June 8, 2009
Published: June 17, 2009

Yong-Kee Yeo, Zhaowen Xu, Dawei Wang, Jianguo Liu, Yixin Wang, and Tee-Hiang Cheng, "High-speed optical switch fabrics with large port count," Opt. Express 17, 10990-10997 (2009)

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