Self-steepening, Raman scattering and self-phase modulation-interactions via the perturbed Chen–Lee–Liu equation with an extra dispersion. Modulation insability and spectral analysis

Abstract It is worth mentioning that the perturbed Chen–Lee–Liu equation (PCLLE) exhibits effects of self-steepening (SS), Raman scattering (RS) and self-phase modulation (SPM). Our attention focused, here, to inspect challenge between these phenomena may lead a dominant one among them. On other hand, we investigate produced due interactions. Furthermore, structure configuration pulses propagation in optical fibers are depicted. These illustrated, via studying PCLLE with an extra dispersion. This formulated exact solutions this new found by using unified method (UM). The importance UM stems from fact that, applications, have low time cost symbolic computation. So, think it prevails known methods literature. for complex envelope field equations, literature, always considered real wave amplitude. Here, transformation based on amplitude introduced. Indeed, case, describe waves result soliton- periodic collision, which reveal novel phenomena. obtained evaluated numerically represented graphs. shown compression occurs be modulation. Also, dispersive shock can argued presence dispersion self-sdteepening. worthy mention arises small value related coefficient. results obtained, novel. instability analyzed triggers at critical values SS RS coefficients. At stage, occur. observed spectrum shows soliton background.