The analysis of light propagation in a tapered gradient-index (GRIN) medium when the input signal is a binary function is considered with the Walsh–Hadamard analysis. The study of the evolution of the sequency spectrum through the GRIN medium by the Walsh–Hadamard transform confirms the self-imaging effect.
© 2004 Optical Society of America
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1950) Diffraction and gratings : Diffraction gratings
(110.2350) Imaging systems : Fiber optics imaging
(110.6760) Imaging systems : Talbot and self-imaging effects
Osvaldo Trabocchi and Carlos Gómez-Reino, "Walsh–Hadamard analysis applied to the study of light propagation in a tapered gradient-index medium," J. Opt. Soc. Am. A 21, 388-392 (2004)