公开(公告)号：US20240255694A1

公开(公告)日：2024-08-01

申请号：US18411175

申请日：2024-01-12

Applicant: CORNING INCORPORATED

Inventor： Scott Robertson Bickham ,  Martin Hempstead ,  Snigdharaj Kumar Mishra ,  Stephen Quenton Smith ,  Pushkar Tandon

IPC: G02B6/028 ,  G02B6/02

CPC classification number: G02B6/0281 ,  G02B6/02009

Abstract: An optical fiber having a silica-based core region with an outer radius r1 from about 4.0 microns to about 4.6 microns and a core volume from about 4.5% Δ-micron2 to about 5.5% Δ-micron2. The optical fiber further includes a depressed-index cladding region and an outer cladding region. The depressed-index cladding region having an inner radius r2 such that r1/r2 is greater than about 0.4 and less than about 0.6 and a trench volume between about −50% Δ-micron2s and about −20% Δ-micron2. The optical fiber has a mode field diameter at 1310 nm from about 8.8 microns to about 9.4 microns, a 2 m cable cutoff from about 1120 nm to about 1260 nm, a bending loss at 1310 nm, as determined by the mandrel wrap test using a 15 mm diameter mandrel, of less than 1.0 dB/turn, and a zero dispersion wavelength between 1300 nm and 1324 nm.

公开(公告)号：US11773016B2

公开(公告)日：2023-10-03

申请号：US16687899

申请日：2019-11-19

Applicant: CORNING INCORPORATED

Inventor： Martin Hempstead ,  Stephan Lvovich Logunov

IPC: C03C25/6226 ,  C03C25/106 ,  G02B5/02

CPC classification number: C03C25/6226 ,  C03C25/106 ,  G02B5/0226

Abstract: An apparatus for curing a coating composition disposed on a glass fiber includes a diffuse reflector surrounding a coating composition disposed on a glass fiber. The diffuse reflector defines a cavity having a sidewall extending from a first end to a second end. The first end has a first opening and the second end has a second opening. The glass fiber passes through the cavity from the first opening to the second opening. The sidewall has an interior surface facing the coating composition disposed on the glass fiber. The interior surface includes a scattering material. A light source integrated with the diffuse reflector. The light source directs light to the scattering material. The scattering material diffusely reflects at least 90% of the light. The diffusely reflected light has sufficient intensity to cure the coating composition.

公开(公告)号：US20210102898A1

公开(公告)日：2021-04-08

申请号：US17036429

申请日：2020-09-29

Applicant: CORNING INCORPORATED

Inventor： Scott Robertson Bickham ,  Martin Hempstead ,  Richard Lynton Wiggins

IPC: G01N21/65

Abstract: A Raman spectroscopy system is provided. The spectroscopy system includes an optical switch including a pump inlet, a return outlet, a plurality of pump outlets, and a plurality of return inlets. The spectroscopy system includes a plurality of radiation sources optically coupled to the pump inlet of the optical switch, and a detector optically coupled to the return outlet of the optical switch. The spectroscopy system further includes a plurality of probes, each probe optically connected to at least one of the plurality of pump outlets of the optical switch by at least one excitation fiber and optically coupled to one of the return inlets of the optical switch by at least one emission fiber.

公开(公告)号：US10893577B2

公开(公告)日：2021-01-12

申请号：US15700294

申请日：2017-09-11

Applicant: Corning Incorporated

Inventor： Martin Hempstead

IPC: H05B3/00 ,  C03B37/014

Abstract: An improved process for preheating and doping a preform having a consolidated glass core and a silica soot cladding surrounding core involves waveguiding millimeter wavelength electromagnetic radiation into the preform to cause heating of the preform within the interior via absorption of the electromagnetic radiation by silica in the preform while the preform is exposed to a gas phase dopant.

公开(公告)号：US20180084609A1

公开(公告)日：2018-03-22

申请号：US15700294

申请日：2017-09-11

Applicant: Corning Incorporated

Inventor： Martin Hempstead

IPC: H05B3/00

CPC classification number: H05B3/0033 ,  C03B37/01446 ,  C03B37/01453 ,  C03B2201/10 ,  C03B2201/12

Abstract: An improved process for preheating and doping a preform having a consolidated glass core and a silica soot cladding surrounding core involves waveguiding millimeter wavelength electromagnetic radiation into the preform to cause heating of the preform within the interior via absorption of the electromagnetic radiation by silica in the preform while the preform is exposed to a gas phase dopant.

公开(公告)号：US11428637B2

公开(公告)日：2022-08-30

申请号：US17036429

申请日：2020-09-29

Applicant: CORNING INCORPORATED

Inventor： Scott Robertson Bickham ,  Martin Hempstead ,  Richard Lynton Wiggins

IPC: G01N21/65

Abstract: A Raman spectroscopy system is provided. The spectroscopy system includes an optical switch including a pump inlet, a return outlet, a plurality of pump outlets, and a plurality of return inlets. The spectroscopy system includes a plurality of radiation sources optically coupled to the pump inlet of the optical switch, and a detector optically coupled to the return outlet of the optical switch. The spectroscopy system further includes a plurality of probes, each probe optically connected to at least one of the plurality of pump outlets of the optical switch by at least one excitation fiber and optically coupled to one of the return inlets of the optical switch by at least one emission fiber.