Brett J Hoover

Author:

Brett Hoover

ISBN #:

0809137208

Author:

Brett Hoover

ISBN #:

0809140799

US Patent:

8133593, Mar 13, 2012

Filed:

Jun 26, 2008

Appl. No.:

12/146928

Inventors:

Joel Patrick Carberry - Elmira Heights NY, US
Michael Thomas Gallagher - Corning NY, US
Brett Jason Hoover - Middlebury Center PA, US
Joseph Edward McCarthy - Addison NY, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

B29B 7/00
D02G 3/00
B32B 17/06
G02B 6/02

US Classification:

4285428, 428373, 428375, 428426, 428428, 385123

Abstract:

A preform for forming a hollow-core, slotted photonic band-gap (PBG) optical fiber for use in an environmental sensor, and methods of forming such a fiber using the preform are disclosed. The preform comprises a slotted cladding tube that surrounds a slotted, hollow-core PBG cane. The slots in the cladding tube and PBG cane are longitudinally formed and substantially aligned with each other. When the preform is drawn, the slots merge to form an elongated side opening or slot in the resulting hollow-core PBG fiber.

US Patent:

20110265520, Nov 3, 2011

Filed:

Apr 28, 2010

Appl. No.:

12/769288

Inventors:

Xin Chen - Corning NY, US
Brett Jason Hoover - Middlebury Center PA, US
Ming-Jun Li - Horseheads NY, US
Anping Liu - Big Flats NY, US
Jody Paul Markley - Watkins Glen NY, US

International Classification:

G01N 23/20

US Classification:

65378

Abstract:

A method for determining a rotational characteristic of an optical fiber is disclosed. The method includes forming an orientation registration feature in an optical fiber preform and drawing an optical fiber from the preform such that the orientation registration feature formed in the optical fiber preform is imparted to the optical fiber. The optical fiber is then rotated about a longitudinal axis and the direction of rotation is periodically reversed. An orientation signal of the optical fiber is determined based on a position of the orientation registration feature as the optical fiber is rotated. A rotational characteristic of the optical fiber is then determined based on the orientation signal.

US Patent:

20120114292, May 10, 2012

Filed:

Oct 14, 2011

Appl. No.:

13/273495

Inventors:

Brett Jason Hoover - Middlebury Center PA, US
Ming-Jun Li - Horseheads NY, US

International Classification:

G02B 6/02
C03B 37/027
C03B 37/018
G02B 6/028

US Classification:

385124, 385126, 65386

Abstract:

Multi-core optical fiber ribbons and methods for making multi-core optical fiber ribbons are described herein. In one embodiment, a multi-core optical fiber ribbon includes at least two core members formed from silica-based glass and oriented in parallel with one another in a single plane. Adjacent core members have a center-to-center spacing ≧15 microns and a cross-talk between adjacent core members is ≦−25 dB. In this embodiment each core member is single-moded with an index of refraction n, and a core diameter d. In an alternative embodiment, each core member is multi-moded and the center-to-center spacing between adjacent core members is ≧25 microns. A single cladding layer is formed from silica-based glass and surrounds and is in direct contact with the core members. The single cladding layer is substantially rectangular in cross section with a thickness ≦400 microns and an index of refraction n≦n.

US Patent:

20140042306, Feb 13, 2014

Filed:

Oct 24, 2012

Appl. No.:

13/658991

Inventors:

Brett Jason Hoover - Middlebury Center PA, US
Ming-Jun Li - Horseheads NY, US
Shenping Li - Painted Post NY, US

International Classification:

G02B 6/02
G01J 1/04

US Classification:

25022714, 385 12

Abstract:

A two-core optical fiber is provided for use in Brillouin distributed fiber sensor applications and systems. The two-core fiber includes a first and second core. Each core is configured to exhibit a Brillouin frequency shift greater than 30 Mhz relative to the other core. Further, each core possesses temperature and strain coefficients that differ from the other core. The cores can be configured to produce Brillouin frequency shift levels of at least 30 Mhz relative to one another. These differences in shift levels may be effected by adjustment of the material compositions, doping concentrations and/or refractive index profiles of each of the cores. These optical fibers may also be used in BOTDR- and BOTDA-based sensor systems and arrangements.

US Patent:

7346250, Mar 18, 2008

Filed:

Mar 30, 2007

Appl. No.:

11/731633

Inventors:

Michael Thomas Gallagher - Corning NY, US
Daniel Warren Hawtof - Corning NY, US
Brett Jason Hoover - Middlebury Center PA, US

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 6/04
G02B 6/02

US Classification:

385125, 385115

Abstract:

A method of fabricating a microstructure for an optical waveguide such as a photonic bandgap fiber is provided. The method includes the steps of assembling a stack of capillary tubes having substantially identical dimensions, fusing and redrawing the stack into a preform having a plurality of parallel holes of equal diameter, selecting a pattern of the holes for etching in order to increase their diameter, and plugging the unselected holes at one end of the preform against the flow of a pressurized etching fluid. Such plugging of the unselected holes is accomplished applying a layer of a gel-like sealant over the end of the preform, and then pushing the sealant into the holes to form sealant plugs in all of the holes. The sealant plugs are then removed from the selected holes by punching the sealant plugs out of the selected holes. The selected holes are then etched by conducting a pressurized flow of etching fluid to the end of the preform such that etching fluid flows only through the pattern of selected holes.