Propagation Dynamics Of Optical Pulses Research Articles

Spatiotemporal dynamics of an optical pulse propagating in multimode hollow-core fibers filled with prealigned molecular gases

Spatiotemporal propagation dynamics of optical pulses in a multimode hollow-core fiber filled with prealigned molecular gases is numerically studied. Due to the use of accurate models, several interesting results are obtained, such as the periodic spatiotemporal evolution behavior, the formation of a stable donut-shaped beam profile, and the increasing of pulse energy during frequency upconversion. It is the use of hollow-core fibers that enables these behaviors to be observed. These observations enrich our understanding of optical pulse propagation dynamics and will benefit relevant technologies.

Dynamics of Optical Pulse Propagation in the Ribbon Formed by Graphene and Boron Nitride Layers of Finite Width

The propagation of an ultrashort optical pulse in the multilayered structure formed by alternating graphene and boron nitride layers is considered. Conduction electrons of this system at low temperatures are described by the effective long-wavelength Hamiltonian, and the electromagnetic field is considered based on the classical Maxwell equations. Dependence of the evolution on the ultrashort pulse amplitude and nanoribbon layer width is established.

Polariton gap solitary waves in semiconductor microcavities

We study nonlinear dynamics of optical pulse propagation in the spectral region inside the polariton gap. It is shown that the Kerr nonlinearity can lead to formation of solitary waves in this region of frequencies.

Polariton solitons in semiconductors

The nonlinear dynamics of optical pulse propagation is considered in the spectral region near an exciton resonance in a semiconductor crystal. The conditions under which polariton solitons form are examined. Applications to CuCl and CdS are discussed.

Average soliton dynamics and the operation of soliton systems with lumped amplifiers

It is shown that the dynamics of optical pulse propagation in lumped amplified systems is described by the lossless nonlinear Schrodinger equation under the condition that the amplifier spacing is short compared to the nonlinear evolution length scale. The errors involved in this description are quantified and are on the order of the square of the amplifier spacing. The authors also consider an alternative method of pulse preemphasis which has been proposed, and they show how it relates to the average soliton method presented. >