Richard M Fiacco

US Patent:

6477305, Nov 5, 2002

Filed:

Apr 11, 2000

Appl. No.:

09/547598

Inventors:

George E. Berkey - Pine City NY
Dana C. Bookbinder - Corning NY
Richard M. Fiacco - Corning NY
Cynthia B. Giroux - Corning NY
Daniel W. Hawtof - Painted Post NY
Dale R. Powers - Painted Post NY
V. Srikant - Ithaca NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 602

US Classification:

385123, 65414, 65422, 65426

Abstract:

A cylindrical glass body having a low water content centerline region and method of manufacturing such a cylindrical glass body for use in the manufacture of optical waveguide fiber is disclosed. The centerline region of the cylindrical glass body has a water content sufficiently low such that an optical waveguide fiber made from the cylindrical glass body of the present invention exhibits an optical attenuation of less than about 0. 35 dB/km, and preferably less than about 0. 31 dB/km at a measured wavelength of 1380 nm. A low water content plug used in the manufacture of such a cylindrical glass body, an optical waveguide fiber having a low water peak, and an optical fiber communication system incorporating such an optical waveguide fiber is also disclosed.

US Patent:

6574994, Jun 10, 2003

Filed:

Jun 18, 2001

Appl. No.:

09/883630

Inventors:

Michael B. Cain - Corning NY
Liam R. dePaor - Corning NY
Robert B. Desorcie - Painted Post NY
Richard M. Fiacco - Corning NY
Cynthia B. Giroux - Corning NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

C03B 37018

US Classification:

65391, 65413, 65414, 65415, 65416, 65417, 65419, 65421, 65428, 65435, 65412, 65397, 65398

Abstract:

A method for manufacturing optical fiber preform and fiber. According to the method, a core cane segment is formed with a refractive index delta preferably between 0. 2% and 3% that is most preferably formed by an OVD method. A sleeve is formed including at least one down-doped moat preferably having a refractive index delta between -0. 1% and -1. 2% and at least one up-doped ring preferably having a refractive index delta between 0. 1% and 1. 2%. The sleeve is formed by introducing glass precursor and dopant compounds into a cavity of a preferably silica glass tube (e. g. , one of an MCVD and PCVD method). The core cane segment is inserted into the sleeve and the sleeve is collapsed onto the core cane segment to form a core-sleeve assembly. The core-sleeve assembly is again drawn into a cane and additional cladding is preferably formed thereon. Optical fiber may be drawn from the preform in a conventional draw apparatus.

US Patent:

6885787, Apr 26, 2005

Filed:

Jan 11, 2002

Appl. No.:

10/044452

Inventors:

A. Joseph Antos - Elmira NY, US
Dana C. Bookbinder - Corning NY, US
Richard M. Fiacco - Corning NY, US
Kevin B. Sparks - Corning NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B006/255
G02B006/36
G02B006/16

US Classification:

385 15, 385 39, 385 96, 385127

Abstract:

An optical waveguide fiber or body having a doped outer region which can be utilized in an optical coupler, a preform which can serve as the precursor for the fiber, an optical coupler, and methods of making same. Water, for example in the form of HO and/or DO, may be added to the cladding of the optical waveguide fiber or body.

US Patent:

6904772, Jun 14, 2005

Filed:

Dec 14, 2001

Appl. No.:

10/023291

Inventors:

George E. Berkey - Pine City NY, US
Dana C. Bookbinder - Corning NY, US
Richard M. Fiacco - Corning NY, US
Dale R. Powers - Painted Post NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

C03B037/027

US Classification:

65412, 65422, 65424, 65426

Abstract:

Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical waveguide fiber and preforms made via OVD. The fibers may be hydrogen resistant, i. e. exhibit low hydrogen aged attenuation. A low water peak, hydrogen resistant optical waveguide fiber is disclosed which exhibits an optical attenuation at a wavelength of about 1383 nm which is less than or equal to an optical attenuation exhibited at a wavelength of about 1310 nm.

US Patent:

6935050, Aug 30, 2005

Filed:

Oct 31, 2003

Appl. No.:

10/698494

Inventors:

Dana C. Bookbinder - Corning NY, US
Richard M. Fiacco - Corning NY, US
Cynthia B. Giroux - Corning NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

F26B005/04

US Classification:

34416, 34 80, 34 82, 65422

Abstract:

A method and apparatus for producing an optical fiber preform including a metal remover, which operates by adsorption, that removes gaseous transition metal impurities present in a process gas to be provided to a furnace for drying, doping or consolidation. The apparatus and method may reduce attenuation of the resultant optical fiber drawn from the preform.

US Patent:

6944382, Sep 13, 2005

Filed:

Feb 6, 2004

Appl. No.:

10/773636

Inventors:

George E. Berkey - Pine City NY, US
Dana C. Bookbinder - Corning NY, US
Richard M. Fiacco - Corning NY, US
Dale R. Powers - Painted Post NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B006/02

US Classification:

385123, 385124

Abstract:

Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical waveguide fiber and preforms made via OVD. The fibers may be hydrogen resistant, i. e. exhibit low hydrogen aged attenuation. A low water peak, hydrogen resistant optical waveguide fiber is disclosed which exhibits an optical attenuation at a wavelength of about 1383 nm which is less than or equal to an optical attenuation exhibited at a wavelength of about 1310 nm.

US Patent:

7076141, Jul 11, 2006

Filed:

May 6, 2005

Appl. No.:

11/123920

Inventors:

George E. Berkey - Pine City NY, US
Dana C. Bookbinder - Corning NY, US
Richard M. Fiacco - Corning NY, US
Dale R. Powers - Painted Post NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 6/02
G02B 6/00

US Classification:

385123, 385140, 385141, 385142, 385144

Abstract:

Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical waveguide fiber and preforms made via OVD. The fibers may be hydrogen resistant, i. e. exhibit low hydrogen aged attenuation. A low water peak, hydrogen resistant optical waveguide fiber is disclosed which exhibits an optical attenuation at a wavelength of about 1383 nm which is less than or equal to an optical attenuation exhibited at a wavelength of about 1310 nm.

US Patent:

7155936, Jan 2, 2007

Filed:

Aug 8, 2003

Appl. No.:

10/638004

Inventors:

Steven B. Dawes - Corning NY, US
Richard M. Fiacco - Corning NY, US
Kenneth E. Hrdina - Horseheads NY, US
Michael H. Wasilewski - Corning NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

C03B 21/00
C03B 23/04

US Classification:

65 64, 65 63, 65102

Abstract:

The present invention provides doped titania-doped silica glass articles having low thermal expansions and low variations in thermal expansion. According to one embodiment of the invention, a titania-doped silica glass article has a titania content of between about 5 wt % and about 9 wt %; a coefficient of thermal expansion of between about −30 ppb/ C. and about +30 ppb/ C. at a temperature between 15 C. and 30 C. ; and a variation in coefficient of thermal expansion of less than about 5 ppb/ C. at a temperature between 15 C. and 30 C.