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1. WO2013160466 - HYBRID SINGLE AND MULTIMODE OPTICAL FIBER FOR A HOME NETWORK

Publication Number WO/2013/160466
Publication Date 31.10.2013
International Application No. PCT/EP2013/058796
International Filing Date 26.04.2013
IPC
G02B 6/028 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
02Optical fibre with cladding
028with core or cladding having graded refractive index
G02B 6/036 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
02Optical fibre with cladding
036core or cladding comprising multiple layers
CPC
G02B 6/02042
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
02Optical fibre with cladding ; with or without a coating
02042Multicore optical fibres
G02B 6/0281
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
0281Graded index region forming part of the central core segment, e.g. alpha profile, triangular, trapezoidal core
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
G02B 6/03633
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
02Optical fibre with cladding ; with or without a coating
036core or cladding comprising multiple layers
03616Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
03622having 2 layers only
03633arranged - -
Applicants
  • DRAKA COMTEQ BV [NL]/[NL]
Inventors
  • MOLIN, Denis
  • SANSONETTI, Pierre
  • SILLARD, Pierre
Agents
  • BOUAN, Louis-Paterne
Priority Data
PCT/IB2012/00117427.04.2012IB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HYBRID SINGLE AND MULTIMODE OPTICAL FIBER FOR A HOME NETWORK
(FR) FIBRE OPTIQUE HYBRIDE MONOMODE ET MULTIMODE POUR RÉSEAU DOMESTIQUE
Abstract
(EN)
The invention relates to a hybrid optical fiber that includes a multi-segmented optical core exhibiting a refractive graded-index profile typically used to support multimode transmission in which a step-index is added at the center of the optical core, the profile parameters (as) and (Δs) of this step-index being tuned so as to provide an optical fiber that transmits both error free multimode optical signals and error free single-mode optical signals. The implementation of such a refractive index profile n(r) of the optical core, as well as the choice of an adequate value of the parameters (as) and (Δs) lead to adapt the fundamental mode of the optical fiber such that the optical power coupled into the fundamental mode is maximized at the wavelength of the single-mode transmission, 1550 nm for example, while preserving a relatively reduced modal dispersion at the wavelength of the multimode transmission, 850 nm for example.
(FR)
L'invention concerne une fibre optique hybride comprenant un coeur optique multisegmenté présentant un profil de gradient d'indice de réfraction, qui est généralement utilisée pour permettre une transmission multimode, et dans laquelle un saut d'indice est ajouté au centre du coeur optique, les paramètres de profil (as) et (Δs) de ce saut d'indice étant réglés de manière à former une fibre optique transmettant à la fois des signaux optiques multimode dépourvus d'erreur et des signaux optiques monomode dépourvus d'erreur. La mise en oeuvre d'un tel profil d'indice de réfraction n(r) du coeur optique, ainsi que le choix d'une valeur adéquate des paramètres (as) et (Δs) conduisent à adapter le mode fondamental de la fibre optique de façon à maximiser la puissance optique injectée dans le mode fondamental à la longueur d'onde de la transmission monomode, 1550 nm par exemple, tout en conservant une dispersion modale relativement réduite à la longueur d'onde de la transmission multimode, 850 nm par exemple.
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