Brian S Harper

US Patent:

8230701, Jul 31, 2012

Filed:

May 28, 2008

Appl. No.:

12/154908

Inventors:

Raymond D Groh - Wilmington NC, US
Brian Lee Harper - Painted Post NY, US
John Edward Maxon - Canton NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

C03B 37/018

US Classification:

65421, 65413, 65414

Abstract:

A method for forming a silica glass blank includes generating soot using an array of soot producing burners, directing the soot along a first direction onto a bait, collecting the soot on the bait, imparting relative oscillatory motion having a repeat period between the array of soot producing burners and the bait along a second direction orthogonal to the first direction while collecting the soot, and offsetting the relative oscillatory motion by a selected distance along the second direction after each repeat period.

US Patent:

20190004245, Jan 3, 2019

Filed:

Sep 7, 2018

Appl. No.:

16/124775

Inventors:

- Corning NY, US
Paul Andrew Chludzinski - Hampstead NC, US
Brian Lee Harper - Painted Post NY, US
Ming-Jun Li - Horseheads NY, US
Snigdharaj Kumar Mishra - Wilmington NC, US
Sonya Marie Raney - Wrightsville Beach NC, US
Pushkar Tandon - Painted Post NY, US

International Classification:

G02B 6/028
C03B 37/014
C03B 37/018
G02B 6/02
G02B 6/036
C03B 37/025

Abstract:

An optical fiber with low attenuation and methods of making same are disclosed. The optical fiber has a core, an inner cladding surround the core, and an outer cladding surrounding the inner cladding. The outer cladding is chlorine-doped such that the relative refractive index varies as a function of radius. The radially varying relative refractive index profile of the outer cladding reduces excess stress in the core and inner cladding, which helps lower fiber attenuation while also reducing macrobend and microbend loss. A process of fabricating the optical fiber includes doping an overclad soot layer of a soot preform with chlorine and then removing a portion of the chlorine dopant from an outermost region of the overclad soot layer. The soot preform with the modified chlorine dopant profile is then sintered to form a glass preform, which can then be used for drawing the optical fiber.

US Patent:

20180079677, Mar 22, 2018

Filed:

Sep 13, 2017

Appl. No.:

15/702961

Inventors:

- Corning NY, US
Paul Andrew Chludzinski - Hampstead NC, US
Brian Lee Harper - Painted Post NY, US
Ming-Jun Li - Horseheads NY, US
Snigdharaj Kumar Mishra - Wilmington NC, US
Sonya Marie Raney - Wrightsville Beach NC, US
Pushkar Tandon - Painted Post NY, US

International Classification:

C03B 37/014
C03B 37/018
G02B 6/036
G02B 6/028
G02B 6/02

Abstract:

An optical fiber with low attenuation and methods of making same are disclosed. The optical fiber has a core, an inner cladding surround the core, and an outer cladding surrounding the inner cladding. The outer cladding is chlorine-doped such that the relative refractive index varies as a function of radius. The radially varying relative refractive index profile of the outer cladding reduces excess stress in the core and inner cladding, which helps lower fiber attenuation while also reducing macrobend and microbend loss. A process of fabricating the optical fiber includes doping an overclad soot layer of a soot preform with chlorine and then removing a portion of the chlorine dopant from an outermost region of the overclad soot layer. The soot preform with the modified chlorine dopant profile is then sintered to form a glass preform, which can then be used for drawing the optical fiber.

US Patent:

20150336839, Nov 26, 2015

Filed:

May 22, 2014

Appl. No.:

14/284772

Inventors:

- CORNING NY, US
Brian Lee Harper - Wilmington NC, US
Pushkar Tandon - Painted Post NY, US

Assignee:

CORNING INCORPORATED - CORNING NY

International Classification:

C03B 37/018
F23D 99/00

Abstract:

A soot deposition burner assembly, having at least one burner including a burner face on a first surface of a burner support. The burner produces a flame which extends generally perpendicularly to the first surface. A burner shield includes a first wall extending generally perpendicularly from the first surface surrounding the burner face. The burner shield has a base end with a first surface area facing toward the first surface and a shield face with a second surface area facing away from the first surface. To reduce the buildup of soot material, the second surface area is smaller than the first surface area, and the wall thickness is less at the shield face than the base end. Additionally, air can be directed along an exterior surface of the first wall from the base end toward the shield face to further reduce soot buildup.