7 February 2015 Roles of spectral and spatial aggregation in optical network scaling
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Abstract
As the bit rates of routed data streams exceed the throughput of single wavelength-division multiplexing channels, spectral and spatial traffic aggregation become essential for optical network scaling. These aggregation techniques reduce network routing complexity by increasing spectral efficiency to decrease the number of fibers, and by increasing switching granularity to decrease the number of switching components. Spectral aggregation yields a modest decrease in the number of fibers but a substantial decrease in the number of switching components. Spatial aggregation yields a substantial decrease in both the number of fibers and the number of switching components. To quantify routing complexity reduction, we analyze the number of multi-cast and wavelength-selective switches required in a colorless, directionless and contentionless reconfigurable optical add-drop multiplexer architecture. Traffic aggregation has two potential drawbacks: reduced routing power and increased switching component size.
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Sercan O. Arik, Sercan O. Arik, Keang Po Ho, Keang Po Ho, Joseph M. Kahn, Joseph M. Kahn, } "Roles of spectral and spatial aggregation in optical network scaling", Proc. SPIE 9389, Next-Generation Optical Communication: Components, Sub-Systems, and Systems IV, 93890B (7 February 2015); doi: 10.1117/12.2082656; https://doi.org/10.1117/12.2082656
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