title: Propagation of ultrashort pulses in multimode fiber in space and time.
abstract: We perform 3D cross-correlation measurements of the optical field distribution resulting from an ultrashort pulse propagating in 6 meters of multimode fiber. Spatial amplitude and phase distributions of the optical field at the output of the fiber are measured using a time-gated spatial heterodyne interferometer as a function of time delay between the signal and the reference optical fields. We show that the measured signal represents an approximation to the optical impulse response of the multimode fiber.
authors.forename: Rostislav
authors.initials: R
authors.lastname: Rokitski
authors.forename: Shaya
authors.initials: S
authors.lastname: Fainman