We present a theory for a new type of optical spatial soliton that is based on the angle hole burning mechanism of photoisomerization in some polymers. We predict that the photoisomerization nonlinearity can support steady-state dark and bright spatial solitons in the polymer. We also discuss the dependence of the FWHM of the spatial soliton on wavelengths of the background beams and on the rat...

Propagation of a dark optical soliton is investigated in the neighborhood of the zero-group-dispersion wavelength. Analytical results are obtained in the small-amplitude limit when the soliton is described by the Korteweg-de Vries equation. It is predicted that dark solitons may exist near the zero-group-dispersion point, and the region is found where they are unstable and may be transformed in...

We put forward properties of solitons supported by optical lattices featuring topological dislocations and show that solitons experience attractive and repulsive forces around the dislocations. Suitable arrangements of dislocations are even found to form soliton traps, and the properties of such solitons are shown to crucially depend on the trap topology. The uncovered phenomenon opens a new co...

We study the properties of 2D cavity solitons in a coherently driven optical resonator subjected to a delayed feedback. The delay is found to induce a spontaneous motion of a single cavity soliton that is stationary and stable otherwise. This behavior occurs when the product of the delay time and the feedback strength exceeds some critical value. We derive an analytical formula for the speed of...

We present an explicit sech-squared-soliton solution associated with the optical Pockels effect, achieved through generation of frequency combs via parametric down-conversion in microresonators quadratic nonlinearity. This soliton contrasts sech-soliton describing half-harmonic field limit large index mismatch, and cascaded-Kerr effect. predict differences spectral profiles powers solitons, rep...

The propagation of the soliton pattern through optical fiber with weakly disordered dispersion coefficient is considered. Solitons perturbed by this disorder radiate and, as a consequence, decay. The average radiation profile is found. Emergence of a long-range intrachannel interaction between the solitons (mediated by this radiation) is reported. We show that soliton in a multisoliton pattern ...

We analyze the achievable communication rates of a generalized soliton-based transmission system for the optical fiber channel. This method is based on modulation of parameters of the scattering domain, via the inverse scattering transform, by the information bits. The decoder uses the direct spectral transform to estimate these parameters and decode the information message. Unlike ordinary On-...

We consider the collision of a dark soliton with an obstacle in a quasi-onedimensional Bose condensate. We show that in many respects the soliton behaves as an effective classical particle of mass twice the mass of a bare particle, evolving in an effective potential which is a convolution of the actual potential describing the obstacle. Radiative effects beyond this approximation are also taken...

We examine the conditions for soliton stability in actively mode-locked inhomogeneously broadened lasers. Numerical simulation shows that in the small negative group-velocity dispersion (GVD) region, excessive gain filtering prevents the generation of a single stable soliton pulse and that in the large negative GVD region, the free-running spectral components destabilize the soliton pulse as a ...

We consider the collision of a dark soliton with an obstacle in a quasi-onedimensional Bose condensate. We show that in many respects the soliton behaves as an effective classical particle of mass twice the mass of a bare particle, evolving in an effective potential which is a convolution of the actual potential describing the obstacle. Radiative effects beyond this approximation are also taken...