Experimental 5-Tb/s Packet-by-Packet Wavelength Switching System Using 2.5 -Gb/s 8-λ WDM Links

Kimihiro YAMAKOSHI  Nobuaki MATSUURA  Kohei NAKAI  Eiji OKI  Naoaki YAMANAKA  Takaharu OHYAMA  Yuji AKAHORI  

IEICE TRANSACTIONS on Communications   Vol.E85-B    No.7    pp.1293-1301
Publication Date: 2002/07/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Switching
packet,  switch,  WDM,  AWG,  

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We have developed an experimental 5-Tb/s packet-by-packet wavelength switching system, OPTIMA-2. This paper describes its hardware architecture. OPTIMA-2 is a non-blocking 3-stage switch using optical wavelength division multiplexing (WDM) links and dynamic bandwidth-sharing. A new scheduling algorithm for variable-length packets is used for the receiver ports of WDM links and simulation results show that it can suppress short-packet delay while keeping high throughput. An implementation of the WDM link using field programable gate arrays and a compact planar lightwave circuit platform is described. Experimental results for the basic operation of optical wavelength switching are also presented.