Comparison of wavelength-interchanging and wavelength-selective cross-connects in multiwavelength all-optical networks

Authors:
Gibong Jeong;Ender Ayanoglu
Affiliations:
Information Systems Laboratory, Stanford University, Stanford, CA;AT&T Bell Laboratories, Holmdel, NJ
Venue:
INFOCOM'96 Proceedings of the Fifteenth annual joint conference of the IEEE computer and communications societies conference on The conference on computer communications - Volume 1
Year:
1996

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Abstract

We quantify the benefits of wavelength interchanging in terms of the required capacity and the blocking probability. Most of the previous work on this subject assumed single-fiber links; we study networks with multiple fibers, extend Barry's probability analysis to the multifiber case, and compare those results with fiber gain calculations in exemplary networks. We quantify the gain in blocking probability when wavelength interchanging cross-connects are used compared to the case when wavelength-selective crosss-connects are used, andshow that this gain decreases rapidly with an increasing number of fibers on a link. The formulation captures the effects of the topology and the traffic on this gain. Calculations and simulations are performed which verify analytical results.