Study on fixed wavelength converters array in optical packet switch

Wavelength converter is widely used to resolve packet contention in optical packet switching (OPS). In this paper, fixed wavelength converters (FWCs) are adopted as contention resolution. In order to realize an acceptable packet loss probability, a structure called FWCA (Fixed Wavelength Converters Array) is proposed. The wavelength conversion capacity of an FWCA is the same as that of a tunable wavelength converter, however, its wavelength conversion capacity can be fully utilized. The performances of an optical packet switch with FWCAs and output optical buffers are evaluated by simulation experiments.