We demonstrate that an off-axis illuminated hemispherical-rod microlens acts as a fractional Fourier transformer with a continuously varying degree of fractionality. A complete theoretical treatment of the device as well as experimental results are presented.
© 1999 Optical Society of America
Daniela Dragoman, Mircea Dragoman, and Karl-Heinz Brenner, "Experimental Demonstration of a Continuously Variant Fractional Fourier Transformer," Appl. Opt. 38, 4985-4989 (1999)