The nonlinear effect in one-dimensional chain of polarized molecule;

Effects of nonlinear effects in optical fibers on propagation of Gauss optical pulses;

Narrowband nonlinear effects of fifth-order in a four-level system in Markovian-fields;

Nonlinear effects on propagation of ultrashort intense laser pulses in the atmosphere;

Considered nonlinear effects,under the three different conditions with complete equal spacing,unequal spacing and partly unequal spacing in channel intervals,the transmission performances are simulated respectively.

In this paper,a numerical approach(split-step Fourier method) for solving the equation is discussed and we present that the nonlinear effects are calculated in the frequency domain.

The results show that the initial chirp of Gaussian pulse does not affect compensations for dispersion and nonlinearity effects in the system.

The mechanics of nonlinearity in fiber gratings is introduced, and the macroscopical phenomena and predicted their applications in optic fiber communications are summarized in this paper.

For the best hybrid-compensation scheme, compensation rate is cited to describe the optimized transmission performances, we have found its optimal value which should be carefully chosen due to the interaction among nonlinearity, fiber loss and the noise.