Temporal Filtering Technique Using Time Lenses for Optical Transmission Systems

An optical signal processing scheme using time lenses in a 4-f configuration for optical communication systems is discussed. The first time lens combined with a dispersive element such as an optical fiber produces the Fourier transform of the input signal, and the second time lens combined with a dispersive element placed after the temporal filter produces the inverse Fourier transformation. Typically, in an optical signal processing scheme …