Nonna A Kopylov

US Patent:

6568219, May 27, 2003

Filed:

Jul 31, 2000

Appl. No.:

09/629757

Inventors:

Alastair Malcolm Glass - Rumson NJ
Benjamin Irvin Greene - Westfield NJ
Nonna Kopylov - Scotch Plains NJ
Ahmet Refik Kortan - Warren NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

C03B 37027

US Classification:

65386, 65391, 65 331, 385130, 385 2, 385141, 501 10, 501 41, 501135, 501137, 501 37

Abstract:

The specification describes ceram-glass compositions useful for electro-optic devices. The compositions have active ferroelectric ingredients in a tellurium oxide host. Proper processing of the ceram-glass produces highly transparent material with desirable ferroelectric properties. The ceram-glass materials can be used for electro-optic devices in both bulk and thin film applications.

US Patent:

56424540, Jun 24, 1997

Filed:

Dec 18, 1995

Appl. No.:

8/573672

Inventors:

Nonna Kopylov - Scotch Plains NJ
Ahmet Refik Kortan - Warren NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G02B 616

US Classification:

385123

Abstract:

A method and apparatus are provided for drawing a self-aligned core fiber free of surface contamination and inserting the core fiber into a cladding material to make an optical fiber preform. Single or multi-mode optical fibers having high quality core-clad interfaces can be directly drawn from the preforms described herein.

US Patent:

55735711, Nov 12, 1996

Filed:

Dec 1, 1994

Appl. No.:

8/347978

Inventors:

Nonna Kopylov - Scotch Plains NJ
Ahmet R. Kortan - Warren NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

C03B 3702

US Classification:

65388

Abstract:

A method and apparatus are provided for drawing a self-aligned core fiber free of surface contamination and inserting the core fiber into a cladding material to make an optical fiber preform. Single or multi-mode optical fibers having high quality core-clad interfaces can be directly drawn from the preforms described herein.

US Patent:

56791275, Oct 21, 1997

Filed:

Dec 18, 1995

Appl. No.:

8/573673

Inventors:

Nonna Kopylov - Scotch Plains NJ
Ahmet Refik Kortan - Warren NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

C03B 37022

US Classification:

65486

Abstract:

A method and apparatus are provided for drawing a self-aligned core fiber free of surface contamination and inserting the core fiber into a cladding material to make an optical fiber preform. Single or multi-mode optical fibers having high quality core-clad interfaces can be directly drawn from the preforms described herein.

US Patent:

62350722, May 22, 2001

Filed:

Aug 25, 1999

Appl. No.:

9/382611

Inventors:

Nonna Kopylov - Scotch Plains NJ
Ahmet Refik Kortan - Warren NJ

Assignee:

Agere Systems, Inc. - Miami Lakes FL

International Classification:

B01D 4600

US Classification:

55338

Abstract:

A glove box filter system for filtering out particles from a glove box environment defined in a glove box having an outlet and an inlet. The filter system includes a first filter stage for receiving removed gas from the glove box environment. The first filter stage contains a chamber having a first filter through which the removed gas passes for filtering out particles contained in the removed gas. The filtered gas is provided to a circulation conduit connected to a blower for providing movement of the gas through the glove box environment. A second filter stage connected to the glove box inlet is provided for fine-filtering the gas passed by the first filter stage prior to the return of the gas to the glove box environment. The first filter stage is connected to the glove box environment through one or more valves which isolate the first filter stage from the glove box environment when replacement of a first filter contained in the first filter stage occurs. A purging conduit is also provided for purging the first filter stage chamber of particles during replacement of the first filter.

US Patent:

57762228, Jul 7, 1998

Filed:

Jan 31, 1996

Appl. No.:

8/594194

Inventors:

Nonna Kopylov - Scotch Plains NJ
Ahmet R. Kortan - Warren NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

C03B 37025

US Classification:

65384

Abstract:

A method of fabricating optical preforms that yield optical fibers having minimal scattering centers by substantially eliminating bubbles and crystallites that form during preform fabrication. The method utilizes glasses having low viscosity in their liquid state to eliminate large bubbles that contain ambient gasses. Small bubbles that have sizes comparable to the wavelength of light are eliminated by simultaneously vacuum-pumping and slow-cooling the liquid glass used to fabricate the preform before pouring the glass into the preform cast mold. Finally, bubbles due to the formation of vacuums in the preform are eliminated by applying a temperature gradient across the cast mold to induce a steep vertical gradient in viscosity in the liquid glass when the liquid glass is poured in the mold.

US Patent:

58273468, Oct 27, 1998

Filed:

Jan 31, 1996

Appl. No.:

8/594193

Inventors:

Nonna Kopylov - Scotch Plains NJ
Ahmet R. Kortan - Warren NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

C03B 37017

US Classification:

65384

Abstract:

A method of making core holes in cast cladding glass for fabricating optical fiber preforms to make single and multimode optical fibers. Liquid cladding glass is pored into a casting mold having a metallic wire that is translated through the liquid glass as it cools so that the wire essentially carves out a smooth cylindrical core hole along the cylindrical axis of the cooled cladding glass. The method substantially reduces surface contamination at the interface of the core hole and the cladding glass because any liquid glass that comes in contacts with the metallic wire is removed during the process, leaving behind a pristine glass surface.