OPEN RING ARCHITECTURES FOR OPTICAL WDM NETWORKS

摘要

Methods and apparatuses of opening ring optical networks are disclosed, as optical nodes, for example open intercepts and closed intercepts, supporting open ring optical networks. Open ring optical networks can prevent optical wavelengths from traversing an optical node in an optically transparent network. Optical feedback can be prevented in open ring optical networks, for exymple optical networks containing optical amplifiers. Coherent crosstalk can be prevented in open ring optical networks. Some open ring networks further allow standard communication protection techniques that are typically associated with rings which are topologically closed. These network architectures can enable low cost-of-maintenace bandwidth upgrades to the entire network.