Fast Optical Circuit Switch for Intra-Datacenter Networking

Koh UEDA  Yojiro MORI  Hiroshi HASEGAWA  Hiroyuki MATSUURA  Kiyo ISHII  Haruhiko KUWATSUKA  Shu NAMIKI  Toshio WATANABE  Ken-ichi SATO  

IEICE TRANSACTIONS on Communications   Vol.E100-B    No.10    pp.1740-1746
Publication Date: 2017/10/01
Publicized: 2017/04/20
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2017OBI0002
Type of Manuscript: Special Section INVITED PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
switching,  circuit,  array waveguide devices,  

Full Text: FreePDF(2.3MB)

This paper presents a fast and large-scale optical circuit-switch architecture for intra-datacenter applications that uses a combination of space switches and wavelength-routing switches are utilized. A 1,440 × 1,440 optical switch is designed with a fast-tunable laser, 8×8 delivery-and-coupling switch, and a 180×180 wavelength-routing switch. We test the bit-error-ratio characteristics of all ports of the wavelength-routing switch using 180-wavelength 10-Gbps signals in the full C-band. The worst switching time, 498 microseconds, is confirmed and all bit-error ratios are acceptable.