The Wigner distribution function (WDF) offers comprehensive
insight into a signal, for it employs both space (or time) and
frequency simultaneously. Whenever optical signals are involved,
the importance of the WDF is significantly higher because of the
diffraction (or dispersion) behavior of optical signals. Novel
optical implementations of the WDF and of the inverse Wigner transform
are proposed. Both implementations are based on bulk optics
elements incorporating joint transform correlator architecture. A
similar implementation is derived for the ambiguity function, which is
related to the WDF through Fourier transformation.
© 1998 Optical Society of America
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