The Gain of Performance of Optical WDM Networks

Figure 1

WDM network. (a) The model of a single-fiber WDM network $(F=1)$. (b) The physical network path between nodes A, B consists of 3 hops and 4 nodes $(N=4,\text{?}H=3)$. The network is modeled as a directed graph. (c) The optical domain consists of 3 wavelengths $({?}_1,\text{?}{?}_2,\text{?}\text{?}\text{and}\text{?}\text{?}{?}_3)$ on each link $(W=3)$.

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(b)

(c)

(d)