Optical space switch

Details Optical space switch Optical space switch

G - Physics

02

B

88/97.4

G02B 26/08 (2006.01) H04Q 3/52 (2006.01)

Patent

CA 1295499

ABSTRACT OF THE DISCLOSURE An optical space switch is used in a centralized switching system for an optical network and connects light from one of a number of inputs to a selected one of a number of outputs. The switch includes a number of multiplexed phase volume holograms, a spatial light modulator for imposing a selected phase change on light passing through it, distribution means for coupling light from the inputs via the spatial light modulator to the multiplexed phase volume holograms, and collection means for collecting light diffracted by the multiplexed phase volume holograms. Each multiplexed phase volume hologram diffracts light to a selected output in dependence upon the phase change imposed by the spatial light modulator on the light incident upon that hologram.

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