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1. WO2020112370 - METHOD OF SELECTING WIDEBAND MULITMODE FIBER

Publication Number WO/2020/112370
Publication Date 04.06.2020
International Application No. PCT/US2019/061425
International Filing Date 14.11.2019
IPC
H04B 10/079 2013.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
07Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
075using an in-service signal
079using measurements of the data signal
G01M 11/00 2006.01
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
11Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
CPC
G01M 11/332
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
11Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
30Testing of optical devices, constituted by fibre optics or optical waveguides
33with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
332using discrete input signals
G01M 11/335
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
11Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
30Testing of optical devices, constituted by fibre optics or optical waveguides
33with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
335using two or more input wavelengths
G01M 11/338
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
11Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
30Testing of optical devices, constituted by fibre optics or optical waveguides
33with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
338by measuring dispersion other than PMD, e.g. chromatic dispersion
G02B 6/0288
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
02Optical fibre with cladding ; with or without a coating
028with core or cladding having graded refractive index
0288Multimode fibre, e.g. graded index core for compensating modal dispersion
H04B 10/0775
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
07Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
075using an in-service signal
077using a supervisory or additional signal
0775Performance monitoring and measurement of transmission parameters
H04B 10/079
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
07Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
075using an in-service signal
079using measurements of the data signal
Applicants
  • CORNING INCORPORATED [US]/[US]
Inventors
  • ABBOTT III, John Steele
  • BICKHAM, Scott Robertson
Agents
  • LANG, Amy T.
Priority Data
62/773,55230.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD OF SELECTING WIDEBAND MULITMODE FIBER
(FR) PROCÉDÉ DE SÉLECTION DE FIBRE À MODES MULTIPLES À LARGE BANDE
Abstract
(EN)
A method is described for selecting fibers meeting requirements of a second minimum bandwidth at a second wavelength based on differential mode delay data measured at a first wavelength different from the second wavelength. The method comprises measuring the differential mode delay (DMD) data for the multimode fiber at the first wavelength, wherein the DMD data comprises output laser pulse data as a function of the radial position of an input laser pulse having the first wavelength; selecting the multimode fiber based on meeting requirements of the second minimum bandwidth at the second wavelength based on a second set of criteria, comprising a second criterion comprising: the radial dependence of the differential mode delay data measured at the first wavelength being within a pre-determined tolerance of a pre-determined reference function constructed by concatenating two or more even-order polynomials having the form: Formula (I).
(FR)
La présente invention concerne un procédé de sélection d'exigences de réunion de fibres d'une seconde largeur de bande minimale au niveau d'une seconde longueur d'onde sur la base de données de retard de mode différentiel mesurées au niveau d'une première longueur d'onde différente de la seconde longueur d'onde. Le procédé consiste : à mesurer les données de retard de mode différentiel (DMD) pour la fibre à modes multiples à la première longueur d'onde, les données DMD comprenant des données d'impulsion laser de sortie en tant qu'une fonction de la position radiale d'une impulsion laser d'entrée ayant la première longueur d'onde ; à sélectionner la fibre à modes multiples sur la base des exigences de réunion de la seconde largeur de bande minimale à la seconde longueur d'onde sur la base d'un second ensemble de critères, comprenant un second critère comprenant : la dépendance radiale des données de retard de mode différentiel mesurées à la première longueur d'onde se situant dans une tolérance prédéterminée d'une fonction de référence prédéterminée construite par concaténation d'au moins deux polynômes d'ordre pair ayant la forme : Formule (I).
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