We show that the fractional-order Fourier transformation (FRT) is a suitable method to describe chirped pulses submitted to group-velocity dispersion in a linear dispersive medium. Amplitudes exhibiting different chirp coefficients are easily separated with the FRT, although they are temporally superposed.
© 2001 Optical Society of America
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(070.2590) Fourier optics and signal processing : ABCD transforms
(320.1590) Ultrafast optics : Chirping
(320.5550) Ultrafast optics : Pulses
Sébastien Coëtmellec, Marc Brunel, Denis Lebrun, and Cafer Özkul, "Characterization of chirped pulses with the fractional-order Fourier transformation," J. Opt. Soc. Am. A 18, 2754-2759 (2001)