Louay A Eldada

US Patent:

6335149, Jan 1, 2002

Filed:

Apr 8, 1997

Appl. No.:

08/838344

Inventors:

Chengzeng Xu - Succasunna NJ
Chengjiu Wu - Morristown NJ
Kelly M. T. Stengel - Maplewood NJ
Lawrence W. Shacklette - Maplewood NJ
Louay Eldada - Rockaway NJ
James T. Yardley - Morristown NJ

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 612

US Classification:

430321, 430394, 385129, 385132

Abstract:

The invention provides organic optical waveguide devices which are lithographically formed and employ polymeric materials having low optical loss, good long term and short term stability, good flexibility and reduced stress or crack induced scattering loss. An optical element has a substrate; a patterned, light transmissive core composition on the surface of the substrate; and a light reflecting cladding composition on the pattern of the core. The core composition has a glass transition temperature of about 80Â C. or less and the cladding composition has a glass transition temperature of about 60Â C. or less.

US Patent:

6389199, May 14, 2002

Filed:

Feb 19, 1999

Appl. No.:

09/251892

Inventors:

Louay Eldada - Randolph NJ
Robert A. Norwood - Cranford NJ

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 634

US Classification:

385 37, 385 24

Abstract:

Optical signal devices, wavelength division multiplexer/demultiplexer optical devices, and methods of employing the same in which the core layer includes a grating and is comprised of a material whose refractive index is tuned so that the grating reflects a preselected wavelength of light. A single optical signal device can therefore be used to select a variety of wavelengths for segregation.

US Patent:

6438293, Aug 20, 2002

Filed:

Oct 25, 2000

Appl. No.:

09/695886

Inventors:

Louay Eldada - Randolph NJ
Robert A. Norwood - Cranford NJ

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 626

US Classification:

385 37

Abstract:

Optical signal devices, wavelength division multiplexer/demultiplexer optical devices, and methods of employing the same in which the core layer includes a grating and is comprised of a material whose refractive index is tuned so that the grating reflects a preselected wavelength of light. A single optical signal device can therefore be used to select a variety of wavelengths for segregation.

US Patent:

6542684, Apr 1, 2003

Filed:

May 1, 2001

Appl. No.:

09/846691

Inventors:

Louay Eldada - Acton MA
Deepti Pant - Framingham MA
Karl Beeson - Princeton NJ
George Boudoughian - Towaco NJ

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 610

US Classification:

385129, 385131, 385 2, 385 37

Abstract:

A single mode optical waveguide which is lithographically formed and employs polymeric materials having low propagation loss. The optical waveguide has a substrate, a polymeric, buffer layer having an index of refraction n disposed on a surface of the substrate, a patterned, light-transmissive core layer having an index of refraction n disposed directly on a surface of the cladding layer, and an overcladding layer having an index of refraction n on a top surface of the core, side walls of the core, and exposed portions of the buffer layer, with n n n and n=n -n.

US Patent:

6560386, May 6, 2003

Filed:

Aug 16, 2002

Appl. No.:

10/222078

Inventors:

Louay Eldada - Randolph NJ 07869
Robert A. Norwood - Cranford NJ 07016

International Classification:

G02B 626

US Classification:

385 37, 359107, 359169

Abstract:

Optical signal devices, wavelength division multiplexer/demultiplexer optical devices, and methods of employing the same in which the core layer includes a grating and is comprised of a material whose refractive index is tuned so that the grating reflects a preselected wavelength of light. A single optical signal device can therefore be used to select a variety of wavelengths for segregation.

US Patent:

6684019, Jan 27, 2004

Filed:

Feb 22, 2000

Appl. No.:

09/510331

Inventors:

Robert A. Norwood - West Chester PA
Louay Eldada - Lexington MA
Shing Yin - Basking Ridge NJ
Cathy Glass - Sewickley PA
Robert M. Blomquist - Whippany NJ

Assignee:

E.I. du Pont de Nemours and Company - Wilmington DE

International Classification:

G02B 610

US Classification:

385129, 385130, 385131

Abstract:

An optical signal device which is temperature sensitive and has at least one waveguide layer and at least one material incorporated into the device having a coefficient of thermal expansion of from about 20 to 200 ppm/ÂK sufficient to impart tensile stress to the waveguide layers as the temperature of the optical signal device changes.

US Patent:

6728445, Apr 27, 2004

Filed:

May 30, 2002

Appl. No.:

10/160924

Inventors:

Robert Blomquist - Whippany NJ
George Boudoughian - Towaco NJ
Louay Eldada - Lexington MA
Michael J. McFarland - Washington NJ
Lawrence W. Shacklette - Maplewood NJ

Assignee:

E. I. du Ponte de Nemours and Company - Wilmington DE

International Classification:

G02B 626

US Classification:

385 37, 385 24, 372 20

Abstract:

A wavelength selective optical device for locking to a selected wavelength in an ITU grid includes a first waveguide, a second waveguide, a heating element and a control unit. The first waveguide includes a tunable filter formed in the first waveguide and the second waveguide includes a reference filter formed in the second waveguide. The heating element is in thermal contact with the tunable filter and the reference filter and the control unit is coupled to the heating element and the reference filter. The control unit varies a temperature of the heating element responsive to an indication signal provided by the reference filter to adjust the selected channel of the tunable filter.

US Patent:

6800424, Oct 5, 2004

Filed:

Jan 8, 2003

Appl. No.:

10/338811

Inventors:

Baopei Xu - Lake Hiawatha NJ
Louay Eldada - Randolph NJ
Robert A. Norwood - West Chester PA
Robert Blomquist - Whippany NJ

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

G02B 616

US Classification:

430321, 430290, 385122, 385131, 385 5, 385 50, 385130, 359109

Abstract:

The invention provides organic optical waveguide devices which employ perfluoropolymeric materials having low optical loss and low birefringence. An optical element has a substrate; a patterned, light transmissive perfluoropolymer core composition; and a light reflecting cladding composition on the pattern of the core. Writing of high-efficiency waveguide gratings is also disclosed.