NFLU (Non-linear fiber optics)

Non-linear fiber optics (NFLU) refers to the study and use of optical fibers where the propagation of light is influenced by the intensity of the signal itself. Unlike linear fibers, where signals travel independently, NFLU involves effects like self-phase modulation, four-wave mixing, and soliton formation that occur at high power levels. These phenomena enable advanced functionalities such as supercontinuum generation, all-optical signal processing, and improved data transmission capacity. NFLU plays a crucial role in developing high-speed, high-capacity optical communication systems and novel photonic devices by harnessing the complex, nonlinear interactions of light within specialized fibers.