DYNAMIC HOLOGRAPHIC INTERCONNECTS THAT USE FERROELECTRIC LIQUID-CRYSTAL SPATIAL LIGHT MODULATORS

Dynamic interconnect holograms are designed by the use of a simulated annealing algorithm and written to a 128 x 128 pixel ferroelectric spa tial light modulator that is used in a binary-phase mode. Dynamic holo grams are used to implement a 2 x 2 crossbar with single-mode fiber in puts and outputs, which function with as high as 27 dB of isolation be tween output ports. The principle is extended to two-dimensional inter connection holograms, and arbitrary fan-out to as high as 64 points is demonstrated with good performance. Images of interconnection hologra ms are transferred from the spatial light modulator to an optically ad dressed spatial light modulator that is used in a binary-phase mode. T he addition of a fixed array generator computer-generated hologram per mits replication of the hologram image, thus creating a larger hologra m with a high space-bandwidth product on the optically addressed spati al light modulator.Results of a preliminary experiment are