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Modules that perform photorefractive two-beam coupling operations have been built,
characterized, and tested. These portable modules, interconnected by fiber optics, dispense …

Among the most widely used properties of photorefractive materials is their ability to couple
energy between two beams overlapping within the medium. This property allows for a weak …

We describe a real-time image-processing scheme that uses selective erasure of spatial
frequencies at the Fourier transform plane in an arrangement employing photorefractive two …

Photorefractive two-beam coupling with reduced spatiotemporal coherence is investigated
both theoretically and experimentally. Limited spatiotemporal coherence results in spatially …

A scheme is presented that uses cascaded two-beam coupling interactions to optically
generate a log transform. By optimizing the two free parameters of gain coefficient and beam …

We demonstrate a self-organizing photorefractive circuit that demultiplexes a beam that has
two signals imposed on separate optical carrier frequencies into two beams, each …

A design is presented which combines concepts of 2-D spatial light modulation with
photorefractive coupling for a subsystem applicable to optical communications. Laser diodes …

We solve the problem of the transmission of time modulated signals in a two-beam coupling
photorefractive set-up using an absorbing material. We obtain an analytical expression that …

Two-beam coupling devices with two input ports for a signal beam were fabricated using
photorefractive polymeric materials. By switching the input port, two-mode operation of a …