Parallel Wavelength Fault Tolerant Clos-network for Space Optical Network
2018
In order to satisfy high mobility and reliability of space optical networks, a Parallel Wavelength Fault Tolerant Closnetwork, PW-FTC, is proposed to resist faults induced by space effects. At the network level, the minimal number of wavelengths required to resist link failures, W min , is obtained by solving the linear programming model. At the node level, the PW-FTC network consists of W min Fault Tolerant Clos-network (FTC) planes, in each of which a wavelength switching is accomplished. Both theoretical analysis and numerical results demonstrate that, the PW- TC outperforms Parallel Wavelength Fault Tolerant Clos-network, PW-Clos, and Parallel Spare Wavelength Closnetwork, PSW-Clos, at reliability at the cost of adding spare switching elements.
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