David J Rabb

US Patent:

7630598, Dec 8, 2009

Filed:

May 8, 2007

Appl. No.:

11/801105

Inventors:

Betty Lise Anderson - Gahanna OH, US
David J. Rabb - Columbus OH, US

Assignee:

The Ohio State University - Columbus OH

International Classification:

G02B 6/26

US Classification:

385 18, 385 15, 385 16, 359838

Abstract:

An optical cross-connect for shifting the location of one or more light beams in and array of light beams is provided. An exemplary embodiment of an optical cross connect includes an input array for inputting an array of light beams; at least a portion of a spherical lens; a plurality of microelectrical mechanical devices; and a plurality of mirrors. The microelectrical mechanical devices are located at a distance away from the spherical lens that is approximately equal to the focal point of the spherical lens. The microelectrical mechanical devices include a plurality of individually controllable pixels for directing one or more light beams in the array of light beams through the at least a portion of a spherical lens and onto two or more mirrors. The two or more mirrors may be located at a distance away from the spherical lens that is approximately equal to the focal point of the spherical lens and are located generally opposite of one or more microelectrical mechanical devices. Each of the two or more mirrors may be positioned at different angles with respect to one another so that light beams incident each mirror are shifted differently with respect to one another and land on a subsequent microelectrical mechanical devices.

US Patent:

7911671, Mar 22, 2011

Filed:

May 8, 2007

Appl. No.:

11/801015

Inventors:

David J. Rabb - Columbus OH, US

Assignee:

The Ohio State University - Columbus OH

International Classification:

G02B 26/08

US Classification:

3592231, 3592012, 359900

Abstract:

An true time delay in optical signals using a Fourier cell is provided. One embodiment includes: an input array for inputting an array of light beams; at least a portion of a lens; a plurality of micromirrors located at a distance away from the lens that is approximately equal to the focal length of the lens; one or more mirrors located at a distance away from the lens that is approximately equal to the focal length of the lens; and one or more delay blocks, at least a portion of which are located at a distance away from the lens that is approximately equal to the focal length of the lens. The micromirrors may include a plurality of individually controllable pixels for directing one or more light beams in the array of light beams through the lens and onto either a mirror or a delay block.