The problem of solitonlike pulse propagation in optical fiber devices with two-component fields is studied. Two examples, viz., propagation of pulses in birefringent optical fibers and in nonlinear couplers, are considered. It is shown that radiation processes play an essential role in the soliton dynamics in two-component field fiber devices. Radiation influences the transformation of the main...

We present a detailed study of soliton compression of ultra-short pulses based on phase-mismatched second-harmonic generation (i.e., the cascaded quadratic nonlinearity) in bulk quadratic nonlinear media. The single-cycle propagation equations in the temporal domain including higher-order nonlinear terms are presented. The balance between the quadratic (SHG) and the cubic (Kerr) nonlinearity pl...

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Optical beams are generally unbound in bulk media, and propagate with a velocity approximately amounting to the speed of light in free-space. Guidance and full spatial confinement of light are usually achieved by means of waveguides, mirrors, resonators, and photonic crystals. Here we theoretically demonstrate that nonlinear self-organization can be exploited to freeze optical beams in bulk nea...

We use the physics-informed neural network to solve a variety of femtosecond optical soliton solutions high-order nonlinear Schrödinger equation, including one-soliton solution, two-soliton rogue wave W-soliton solution and M-soliton solution. The prediction error for one-soliton, is smaller. As distance increases, will gradually increase. unknown physical parameters equation are studied by usi...

In this paper, the First Integral Method and Sine-Cosine are being used in constructing optical 1-soliton solutions of Triki-Biswas Equation that plays a vital role study soliton dynamics sub-pico-second pulses mono-mode fibers with non-Kerr law nonlinearity subsequently some non-soliton formally obtained. Â

Exciton effects on conjugated polymers are investigated in the soliton lattice system. We use the Su-Schrieffer-Heeger model with long-range Coulomb interactions treated by the single-excitation configuration-interaction method. The soliton band is present in the Peierls gap of the doped system. There appears a new kind of the exciton where an electron-hole pair is excited between the soliton b...

We analyze optical soliton propagation in the presence of weak absorption lines with much narrower linewidths as compared to the soliton spectrum width using the novel perturbation analysis technique based on an integral representation in the spectral domain. The stable soliton acquires spectral modulation that follows the associated index of refraction of the absorber. The model can be applied...