摘要: In analog frequency-division multiplexed fiber optic systems, laser nonlinearities transfer energy between the different carriers, resulting in intermodulation distortion and interference. A third-order polynomial without memory is used to model nonlinearity. The FM (FM/FDM) signal consists of a set carriers at frequencies. N_{\omega 0} , where N = L, L + 1, +2, ... M . video introduced by nonlinearity determined for various types second- terms. frequency spectrum signals with assumed Gaussian spectra.