Analytical model for the performance evaluation of DWDM transmission systems

A Simple and Effective Closed-Form GN Model Correction Formula Accounting for Signal Non-Gaussian Distribution

“…This in turn derives from the assumption made in [17] that XPM is the dominant component to NLI, so that the other components are discarded. At least in these examples, the discarded contributions (part of XCI and all of MCI) are relevant and cannot be neglected 3 . , vs. number of spans in the link.…”

“…The approximate EGN model Eq. 6, relying on the simple 3 More in depth, XPM as defined in Eq. (25) of [17] is equivalent to evaluating the EGN model limited to only the 'X1' integration regions shown in reference [19], Fig.…”

“…4-Fig. 6, when taking into account that an error of x dB in the estimation of NLI power leads to an error of about 3 x dB in maximum reach estimation [14]. With all fibers, the approximate EGN model Eq.…”

Optimal packing for cascaded regenerative transmission based on phase sensitive amplifiers

“…AWGN can be considered as a representation not only of the amplified spontaneous emission noise [33][34] (linear channel between regenerators), but also of the inter-channel distortions due to Kerr nonlinearity in the fiber (nonlinear channel between regenerators) [8], as well as, of the signal-nonlinear noise interactions that might also arise [9]. The validity of the approach has been verified both theoretically [8][9][10][11][12][13] and experimentally [14], and it has been widely used for estimating capacity limits in nonlinear fiber channels [13], [15], [16]. Figure 1(b) illustrates the details of the proposed simplified simulation model.…”

“…Such features are most likely to be the result of all-optical approaches, making the use of advanced forward error correction (FEC) at regeneration site difficult. Considering a fiber channel as the link between two nodes implementing FEC, all-optical regenerators would result in future high capacity fiber channels being highly nonlinear [7] even in the absence of nonlinear transmission impairments such as those considered in [1][2][3][4] and [8][9][10][11][12][13][14][15][16].…”