公开(公告)号：US20250093574A1

公开(公告)日：2025-03-20

申请号：US18809457

申请日：2024-08-20

Applicant: CORNING INCORPORATED

Inventor： Rostislav Radiyevich Khrapko ,  Ming-Jun Li ,  Stephan Lvovich Logunov ,  Craig Daniel Nie

IPC: G02B6/02

Abstract: An optical fiber that includes a silica core and a cladding surrounding the core is disclosed, the optical fiber having a low attenuation. In embodiments, the optical fiber has an attenuation at 1550 nm of about 0.1420 dB/km. Furthermore, the diameter of the core may be larger than a fundamental mode field diameter of the optical fiber at a wavelength of 1550 nm. In embodiments, the core is doped with an alkali dopant.

公开(公告)号：US20210214266A1

公开(公告)日：2021-07-15

申请号：US17145471

申请日：2021-01-11

Applicant: CORNING INCORPORATED

Inventor： Curtis Robert Fekety ,  Richard Michael Fiacco ,  Ming-Jun Li ,  Craig Daniel Nie ,  Jeffery Scott Stone ,  Pushkar Tandon

IPC: C03B37/014 ,  G02F1/01

Abstract: Disclosed herein are methods for forming an optical fiber preform using organic silica and germania precursors. The method includes depositing soot composed of germanium dioxide and silica on a substrate, removing the substrate, conducting a dehydration step and one or more heating steps under an oxygen-containing atmosphere to form the preform. Also disclosed are optical fibers drawn from the preforms produced herein.

公开(公告)号：US20230167002A1

公开(公告)日：2023-06-01

申请号：US18070016

申请日：2022-11-28

Applicant: CORNING INCORPORATED

Inventor： Dane Alphanso Christie ,  Richard Michael Fiacco ,  Rostislav Radiyevich Khrapko ,  Ming-Jun Li ,  Craig Daniel Nie

IPC: C03B37/012 ,  G02B6/02

CPC classification number: C03B37/01211 ,  G02B6/02395 ,  C03B37/0126 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/50

Abstract: The present invention relates to a method of forming an optical fiber precursor including: forming an alkali metal doped tube; inserting an optical fiber core rod within the alkali metal doped tube; forming a cladding jacket around the alkali metal doped tube; and diffusing an alkali metal from the alkali metal doped tube through a surface of the optical fiber core rod. The present invention further relates to an optical fiber preform having: an optical fiber core rod; an alkali metal doped tube surrounding the optical fiber core rod; and a cladding jacket surrounding the alkali metal doped tube.

公开(公告)号：US20230131288A1

公开(公告)日：2023-04-27

申请号：US17969094

申请日：2022-10-19

Applicant: CORNING INCORPORATED

Inventor： Anthony Sebastian Bauco ,  Joel Patrick Carberry ,  Ming-Jun Li ,  Craig Daniel Nie ,  Vincent Matteo Tagliamonti ,  Chunfeng Zhou

IPC: C03B37/027 ,  C03B37/012 ,  C03B37/018

Abstract: A method of processing an optical fiber that includes drawing an optical fiber along a fiber pathway through a hollow light pipe, wherein the hollow light pipe comprises a first end having an opening with a radius Rp, a second end and a pipe body comprising a chamber extending from the first to the second end, the fiber pathway extending through the pipe body, and a reflective coating is disposed on the pipe body, and directing a light from a directed light source into the hollow light pipe through the opening such that the light is reflected by the reflective coating while propagating in the hollow light pipe, the optical fiber absorbing the light reflected by the reflective coating, wherein the light enters the opening of the hollow light pipe at an input angle in a range of from 10° to 70° with respect to the fiber pathway.

公开(公告)号：US20240043313A1

公开(公告)日：2024-02-08

申请号：US18226816

申请日：2023-07-27

Applicant: CORNING INCORPORATED

Inventor： Sushmit Sunil Kumar Goyal ,  Craig Daniel Nie ,  Pushkar Tandon

IPC: C03B37/012

CPC classification number: C03B37/01245 ,  C03B37/01262 ,  C03B2201/50

Abstract: A method of manufacturing an optical fiber, the method includes drawing a first optical fiber preform at a first draw tension to produce a first alkali doped optical fiber and drawing the first optical fiber preform at a second draw tension to produce a second alkali doped optical fiber, measuring the attenuation of the first alkali doped optical fiber and the second alkali doped optical fiber such that the second alkali doped optical fiber has a lower attenuation. Additionally, the method includes setting the draw tension to the second draw tension and drawing a second optical fiber preform at the second draw tension to produce a third alkali doped optical fiber. The third alkali-doped optical fiber has an attenuation at 850 nm of about 1.50 dB/km or less and an attenuation at 1550 nm of about 0.155 dB/km or less.

公开(公告)号：US20230417983A1

公开(公告)日：2023-12-28

申请号：US18211696

申请日：2023-06-20

Applicant: CORNING INCORPORATED

Inventor： Sushmit Sunil Kumar Goyal ,  Rostislav Radiyevich Khrapko ,  Craig Daniel Nie ,  Benjamin Pelham Schrock ,  Samuel David Stewart ,  Pushkar Tandon

IPC: G02B6/02

CPC classification number: G02B6/02395 ,  G02B6/02014 ,  G02B6/02019

Abstract: An optical fiber comprising a core region doped with a first alkali dopant and a second alkali dopant. The first alkali dopant has a first average core concentration of C1 and a first diffusivity D1. The second alkali dopant has a second average core concentration of C2 and a second diffusivity D2. An outer cladding region surrounds the core region. The diffusivities D1, D2 of the first and second alkali dopants satisfy the relation D1>D2. The average core concentrations C1, C2 of the first and second alkali dopants satisfy the relation 0.1≤C2/C1≤1.