Fourier transforms of fractional order and their optical interpretation

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Abstract

Fourier transforms of fractional order a are defined in a manner such that the common Fourier transform is a special case with order a=1. An optical interpretation is provided in terms of quadratic graded index media and discussed from both wave and ray viewpoints. Fractional Fourier transforms can extend the range of spatial filtering operations.

Original languageEnglish
Pages (from-to)163-169
Number of pages7
JournalOptics Communications
Volume101
Issue number3-4
DOIs
StatePublished - 15 Aug 1993

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