Study of Wavelength Converter Placement in p(pre-configured)-Cycle Protection

The wavelength division multiplexed (WDM) networks can be efficiently protected with high speed using preconfigured protection cycles (p-cycles). p-Cycles can be introduced in any network with or without wavelength converters. As wavelength converters are costlier devices, fully equipping the networks with wavelength converters make it highly expensive. Thus we have compared the spare capacity, in terms of route km of fiber length required, for providing p-cycle protection by placing wavelength converters at some node positions. We have also introduced optimum position for placement of converters at high traversing (HT) nodes. By placing converters at these nodes the required spare capacity is least among all the cases studied.