A Photo-Electric Fourier Transformer

An Optical Analogue Fourier Transformer

The design and construction of a simple optical analogue Fourier transform computer is described. The instrument which uses MoirB fringes to form a variable spatial frequency filter is intended to produce approximate spectra from interferograms in about five minutes. Results obtained with the instrument are shown. ime to time a number of analogue Fourier transform computers have been described,...

Quantum Relations in Photo-Electric Phenomena.

Achromatic optical fourier transformer with planar-integrated free-space optics.

We address the problem of achromatization of an optical system for the realization of planar-integrated, free-space optics. In particular we demonstrate an integrated optical Fourier transformation module that was achromatized for the visible spectrum by means of a diffractive lens doublet. The optical system design is studied by using the parabolic approximation of the scalar diffraction theor...

Design of dynamically adjustable anamorphic fractional transformer Fourier

We form optical systems by using only free space portions and cylindrical lenses, and consider these systems as anamorphic fractional Fourier transformers. We dynamically adjust the transform order, scale factor and field curvature of both orthogonal dimensions of anamorphic fractional Fourier transformation by just changing the focal lengths of cylindrical lenses used in the proposed setups. H...

Modeling of Electric Power Transformer Using Complex- Valued Neural Networks

Accurate simulation of a power grid requires use of detailed power equipment models in order to reflect maximum of complex dynamics occurs in the grid. Conventional approaches are not always sufficient to fulfill necessity of meticulous description of processes in power devices. Existence of physical difference even between devices of exactly the same type pulls the accuracy of the whole grid s...