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Wavelength requirements of all-optical networks

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2 Author(s)
Pankaj, R.K. ; Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada ; Gallager, R.G.

All-optical networks are networks for which all data paths remain optical from input to output. With rapid development of optical technology, such networks are a viable choice for the high speed wide area networks of the future. Wavelength division multiple access (WDMA) currently provides the most mature technology for all-optical networks. The authors discuss a class of WDMA networks that are homogeneous in the sense that each node contains both an input/output port and a switch. They focus on the permutation routing problem and first, present a lower bound on the number of wavelengths required for permutation routing as a function of the size and degree of the network. They use particular topologies, including the multistage perfect shuffle, the Debruijn, and the hypercube, to find achievable upper bounds on the number of required wavelengths

Published in:

Networking, IEEE/ACM Transactions on  (Volume:3 ,  Issue: 3 )