Nonlinear Propagation of Cylindrical Vector Beams in Photonic Crystal Fibers

Photonic Crystal Fibers (PCFs) have witnessed remarkable progress, and recent advancements in nonlinear optics allow us to manipulate the optical response of materials beyond linear regimes. Merging structured fibers with structured light enables precise control over the spatial, spectral, and temporal characteristics of light. This paper comprehensively investigates nonlinear propagation of femtosecond vector beam pulses through a PCF. We explore the impact of nonlinear effects on the modal properties of the donut-shaped beam within the PCF.