Optical Walsh-Hadamard transform for orders 32 and 64.
A coherent optical system composed of a holographic mask and two Fourier lenses is described for performing an arbitrary linear transform. A set of equations for determining the amplitude-phase distribution of the mask is given. As a specific transform, the Walsh-Hadamard transform for orders 32 and 64 is optically made in 1-D space.
Chen
Y S
YS
Zheng
S H
SH
Dong
B Z
BZ
Li
D H
DH
Yang
G Z
GZ