UDWDM PON is a leading technology oriented to provide ultra-high bandwidth to final users while profiting the physical channels' capability. One of the main drawbacks of UDWDM technique is the fact that the nonlinear effects, like FWM, become stronger due to the close spectral proximity among channels. This work proposes a model for the optimal deployment of this type of networks taking into account the fiber length limitations imposed by physical restrictions related with the fiber's data transmission as well as the users' asymmetric distribution in a provided region. The proposed model employs the data transmission related effects in UDWDM PON as restrictions in the optimization problem and also considers the user's asymmetric clustering and the subdivision of the users region though a Voronoi geometric partition technique. Here it is considered de Voronoi dual graph, it is the Delaunay Triangulation, as the planar graph for resolving the problem related with the minimum weight of the fiber links.
One of the main issues in the WDM PON networks design is the optimal dimensioning of the network. The
network size usually depends on the traffic demand and the user density, taking in to account the active and
passive equipment capacity and some physical layer constraints like the attenuation in the optical path. However,
some physical layer limitations related with signal transmission in an optical fiber become more relevant in a
WDM transmission and when operating at very high data rates, like 10 Gbps or beyond. In this paper we propose
a novel physical layer restrictions based integer linear programming (ILP) model for greenfield next generation 10
Gbps WDM PON network design. The results of the model are validated by means of computational techniques.
The proposed ILP model takes into account not only the attenuation of the signal in the optical path but also,
through the use of the data obtained by simulation software. We take in to account the restrictions imposed
by other phenomena like dispersion, cross talk and some non linear effects typically present in a dense WDM