Optical solitons in gas-filled, hollow-core photonic crystal fibers with inter-modal dispersion and self-steepening

The optical solitons in a gas-filled, hollow-core photonic crystal fiber with higher-order dispersion, inter-modal dispersion, Raman effect, self-steepening, detuning, external potential, and dissipation have been studied theoretically by employing the Backlund transformation and Hirota's direct method. The bilinear forms and exact optical one-soliton solutions to the nonlinear optical transmission equation are obtained under the constraint conditions. The influence of correlation coefficients on the width, amplitude, and phase of optical solitons are analyzed. These results have important application features in optical soliton control in gas-filled, hollow-core photonic crystal fibers.