Michael S Mcfarland

US Patent:

53596870, Oct 25, 1994

Filed:

Aug 23, 1993

Appl. No.:

8/111254

Inventors:

Michael J. McFarland - Washington NJ
Karl W. Beeson - Princeton NJ

Assignee:

AlliedSignal Inc. - Morristown NJ

International Classification:

G02B 630

US Classification:

385 49

Abstract:

The present invention is directed to an optical coupling device for facilitating the coupling of an optical fiber to an optical waveguide and to a method for fabricating such coupling device. Another aspect of this invention relates to optical fiber to optical waveguide interconnect comprising the coupling device of this invention, and arrays comprising a plurality of such arrays.

US Patent:

55410391, Jul 30, 1996

Filed:

Nov 18, 1994

Appl. No.:

8/342399

Inventors:

Michael J. McFarland - Washington NJ
Karl W. Beeson - Princeton NJ
Keith Horn - Long Valley NJ
Chengjiu Wu - Morristown NJ

Assignee:

AlliedSignal Inc. - Morris Township NJ

International Classification:

G03C 500
G02B 610

US Classification:

430290

Abstract:

Optically active (optically non-linear or electro-optically active) waveguides are formed by depositing a layer of organic material, typically polymeric material, comprising one or more opticaly active components, and subjecting predetermined regions of the layer to actinic radiation to alter the refractive index of these regions.

US Patent:

50194887, May 28, 1991

Filed:

Apr 24, 1990

Appl. No.:

7/517530

Inventors:

Donald C. Mammato - Lebanon NJ
Sangya Jain - Bridgewater NJ
Dana Durham - East Greenwich RI
Mark A. Spak - Edison NJ
Douglas A. Usifer - Belle Mead NJ
Michael McFarland - Washington NJ

Assignee:

Hoechst Celanese Corporation - Somerville NJ

International Classification:

G03C 516
G03F 740
G03F 7022
G03F 7039

US Classification:

430325

Abstract:

A method for producing a negative image by coating a substrate with a photosensitive layer containing a blocked hydrophobic polymer capable of deblocking in the presence of an acid, and an oxime sulfonate ester or o-quinone-4-sulfonyl-containing diazide, then imagewise exposing, treating with a gaseous base, removing excess base, overall flood exposing, baking and developing with an aqueous alkaline solution.

US Patent:

54813859, Jan 2, 1996

Filed:

Jul 1, 1993

Appl. No.:

8/086414

Inventors:

Scott M. Zimmerman - Olathe KS
Karl W. Beeson - Princeton NJ
Michael J. McFarland - Washington NJ
James T. Yardley - Morristown NJ
Paul M. Ferm - Morristown NJ

Assignee:

AlliedSignal Inc. - Morris Township NJ

International Classification:

G02F 11335

US Classification:

359 40

Abstract:

A direct view display including a light generating means for generating light, a modulating means for modulating light from said light generating means to form an image, and an image display means for displaying said image from said modulating means positioned adjacent to the light output surface of said modulating means, said display means comprising an array of tapered optical waveguides on a planar substrate the tapered end of each of said waveguides extending outward from said substrate and having a light input surface adjacent said substrate and a light output surface distal from said light input surface. The area of the light input surface of each waveguide is greater than the area of its light output surface, and the center-to-center distance between the light input surfaces of adjacent waveguides in said array is equal to the center-to-center distance between the light output surfaces thereof, so that the angular distribution of light emerging from the output surfaces of the waveguides is larger than the angular distribution of light entering the waveguides. Also, the waveguides in said array are separated by interstitial regions with a lower refractive index than the refractive index of said waveguides.