Optical space switch employing 2 parallel diffraction gratings a

Details Optical space switch employing 2 parallel diffraction gratings a Optical space switch employing 2 parallel diffraction gratings a

1992-07-08

1995-07-04

Sikes, William L.

Optical: systems and elements

Holographic system or element

Having optical element between object and recording medium

359 30, 359302, 359298, 359315, 359494, 359498, 359566, 359618, 385 11, 385 37, G02F 113, G02F 1137

Patent

active

054305616

ABSTRACT:
The invention provides an optical space switch device which provides variable interconnection of one- or two-dimensionally spatially multiplexed optical signals. The optical space switch device comprises a plurality of optical space switch stages stacked to form a multi-input multi-output optical space switch. Each of the optical space switch stages comprises a plurality of 2-input 2-output optical switches, each of which comprises a polarization control layer and an optical path shifting layer. The optical path shifting layer has a bypass mode in which it outputs beams of light along optical axes and an exchange mode in which it shifts beams of light by diffraction.

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