Self Phase Modulation: Fiber Loop Mirror

This lecture covers the concept of self-focusing in Self Phase Modulation (SPM) and the use of fiber loop mirrors in nonlinear fiber optics. It explains how a nonlinear medium can act as a lens, the construction of a fiber loop mirror using directional couplers, and the operation of a nonlinear fiber loop mirror. The lecture also discusses the advantages of waveguides for nonlinear optics due to their strong beam confinement and long interaction length, leading to more significant nonlinear phase-shifts.