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Intra-Node Contention in Dynamic Photonic Networks

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6 Author(s)
Feuer, M.D. ; AT&T Labs.-Res., Middletown, NJ, USA ; Woodward, S.L. ; Palacharla, P. ; Xi Wang
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Dynamic photonic networks rely on colorless, non-directional Reconfigurable Optical Add/Drop Multiplexer (ROADM) nodes to enable rapid re-routing of wavelength channels without optoelectronic conversion. We report numerical simulations of the wavelength contention that can occur in such multi-degree ROADM nodes. Intra-node blocking rates and transponder utilization are computed for node designs with and without a client-side fiber cross-connect, and both are compared to results predicted for an ideally contention-free ROADM.

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Lightwave Technology, Journal of  (Volume:29 ,  Issue: 4 )