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.
© 2003 Optical Society of AmericaFull Article | PDF Article
P. C. Sun, Y. T. Mazurenko, and Y. Fainman
J. Opt. Soc. Am. A 14(5) 1159-1170 (1997)
Yoh Imai, Hiroyuki Ono, and Yoshihiro Ohtsuka
Appl. Opt. 26(24) 5229-5233 (1987)
A. VanderLugt, C. S. Anderson, and P. J. W. Melsa
Appl. Opt. 32(20) 3761-3771 (1993)