Deploying Fast and Bandwidth Efficient Protection at Logical Layer for Optical WDM Networks

In this proposal, we review the history of message communication and survey the present broadband deployment. We believe networks in 21st centry are optical networks due to fiber’s inherent data carrying capacity. To overcome the mismatching between the electrical processing speed and the optical transmission rate, an all-optical data path needs be maintained. We investigate the design issues of deploying fast and bandwidth efficient protection for logical networks such as wavelength routed networks and optical burst switching networks. For wavelength routed networks, we propose to couple the primary and backup paths tightly at the end nodes and pre-cross-connect the backup segment. For optical burst swtching networks, we utilize the statistical multiplexing performance of the networks and propose a shared path protection scheme. We adopt graph-based technique, integer linear programming, as well as queueing modeling to develop our protection schemes.