FRACTIONAL FOURIER-TRANSFORM APPLIED TO SPATIAL-FILTERING IN THE FRESNEL DOMAIN

被引：32
|
作者：
GRANIERI, S
TRABOCCHI, O
SICRE, EE
机构：
[1] UNIV NACL LA PLATA,FAC CIENCIAS EXACTAS,LA PLATA,BUENOS AIRES,ARGENTINA
[2] CTR INVEST OPT,RA-1900 LA PLATA,BUENOS AIRES,ARGENTINA
来源：
OPTICS COMMUNICATIONS | 1995年 / 119卷 / 3-4期
关键词：
D O I：
10.1016/0030-4018(95)00348-C
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The fractional Fourier transform can be optically defined through a phase-space coordinate rotation of the Wigner distribution function associated with the input signal. This operation can be achieved by performing three successive shearing processes, which are reduced to a free-space Fresnel diffraction originated by a scaled version of the input object illuminated with a spherical wave. This result is applied to describe the behavior of spatial filtering devices based on the self-imaging phenomenon (Fresnel spatial filters).
引用
收藏
页码：275 / 278
页数：4
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