26 October 2007 Scalability analysis in terms of crosstalk in NZ-DSF ring networks constructed with WSS based ROADM
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Proceedings Volume 6796, Photonics North 2007; 67962T (2007); doi: 10.1117/12.779078
Event: Photonics North 2007, 2007, Ottawa, Canada
Abstract
In optical ring networks, the impact of residual fiber dispersion on the cascadability limit of the optical add-drop systems due to in-band crosstalk is investigated. An experimentally verified re-circulating non-zero dispersion shifted fiber (NZ-DSF) loop model is used to emulate the cascade effect of multiple add-drop nodes. The nodes are implemented based on Wavelength Selective Switches (WSSs) at varying node degrees to support different network configurations. It is shown that 16 node metro rings can be constructed cost effectively using NZ-DSF, at link distances of 75 km, for fiber dispersions as high as 4.6 and 1.2 ps/nm-km at bit rates of 2.5 and 10 Gb/s, respectively, at a 1dB of crosstalk induced penalty. A modular architecture extending to large degree ROADM for mesh networks is also proposed and scalability in terms of crosstalk is reported.
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Rathy Shankar, Jonathan Couturier, Karin Hinzer, Trevor J. Hall, "Scalability analysis in terms of crosstalk in NZ-DSF ring networks constructed with WSS based ROADM", Proc. SPIE 6796, Photonics North 2007, 67962T (26 October 2007); doi: 10.1117/12.779078; http://dx.doi.org/10.1117/12.779078
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KEYWORDS
Dispersion

Network architectures

Optical networks

Switches

Systems modeling

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