title: Space-variant optical correlator based on the fractional Fourier transform: implementation by the use of a photorefractive Bi(12)GeO(2(a)) (BGO) holographic filter.
abstract: A space-variant optical correlator is proposed on the basis of the fractional Fourier transform. The optical device uses as a recording medium for the holographic filter a photorefractive Bi(12)GeO(2) (BGO) crystal. The experimental results confirm the shift-variance properties. Some limitations that arise from the volume diffraction are also considered.
authors.forename: S
authors.initials: S
authors.lastname: Granieri
authors.forename: M
authors.initials: M
authors.lastname: Del Carmen Lasprilla
authors.forename: N
authors.initials: N
authors.lastname: Bolognini
authors.forename: E E
authors.initials: EE
authors.lastname: Sicre