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Based on the reasonable modeling of the spectrum consecutiveness around the node, the concept of node handling capacity is proposed which can effectively indicate the degree of spectrum fragmentation in flexible grid optical networks.
We propose two novel adaptive spectrum defragmentation algorithms in elastic optical networks by properly rerouting existing connections based on the evaluation of current network status, and numerical evaluation shown to be resource efficient.
We propose a novel spectrum defragmentation algorithm in semi-dynamic elastic optical networks by introducing best fit decreasing strategy, numerical evaluation shows that the improvement of the blocking performance and small amount number of interrupted connections are achieved simultaneously.
In this paper, we propose a colorless, directionless and contentionless (C/D/C) ROADM architecture using bandwidth variable carriers select switches (BV-WSS) for elastic optical network and illustrate various advantages offered by it. We also discuss some extensions for current control plane of ASON framework.
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