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Numerical calculation of fractional Fourier transforms with a single fast-Fourier-transform algorithm

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Abstract

A numerical algorithm based on a single fast Fourier transform is proposed. Its precision and calculation efficiency show better performance than those of previously published algorithms. It is also shown that if specific conditions are met, the numerical calculations of two successive fractional Fourier transforms produce results that are similar to the analytical solution.

© 1998 Optical Society of America

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