Phase recovery by using optical fiber dispersion

We propose a simple and fast procedure to retrieve the phase profile of arbitrary light pulses. It combines a first experimental stage, followed by a one-step numerical stage. To this end, it is necessary to perform a Fresnel transform, which is obtained just by propagating the light pulses through an optical fiber. We experimentally test this proposal recovering the phase profile in the light pulses provided by a passively mode-locked laser. The proposal is then compared with a temporal variation of the Gerchberg–Saxton recursive algorithm, which is specially modified for this purpose.Fil: Cuadrado Laborde, Christian Ariel. Universidad de Valencia; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina. Universidad Catolica de La Plata; ArgentinaFil: Carrascosa, A.. Universidad de Valencia; EspañaFil: Pérez Millán, P.. Universidad de Valencia; EspañaFil: Diez, A.. Universidad de Valencia; EspañaFil: Cruz, J. L.. Universidad de Valencia; EspañaFil: Andrés, M. V.. Universidad de Valencia; Españ