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1. WO1998059269 - FILTRE A BANDES PASSANTES MULTIPLES

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Numéro de publication WO/1998/059269
Date de publication 30.12.1998
N° de la demande internationale PCT/GB1998/001761
Date du dépôt international 17.06.1998
Demande présentée en vertu du Chapitre 2 16.10.1998
CIB
G02B 6/34 2006.01
GPHYSIQUE
02OPTIQUE
BÉLÉMENTS, SYSTÈMES OU APPAREILS OPTIQUES
6Guides de lumière; Détails de structure de dispositions comprenant des guides de lumière et d'autres éléments optiques, p.ex. des moyens de couplage
24Couplage de guides de lumière
26Moyens de couplage optique
34utilisant des prismes ou des réseaux
CPC
G02B 6/29317
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
24Coupling light guides
26Optical coupling means
28having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
293with wavelength selective means
29304operating by diffraction, e.g. grating
29316Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
29317Light guides of the optical fibre type
G02B 6/29338
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
24Coupling light guides
26Optical coupling means
28having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
293with wavelength selective means
29331operating by evanescent wave coupling
29335Evanescent coupling to a resonator cavity, i.e. between a waveguide mode and a resonant mode of the cavity
29338Loop resonators
G02B 6/29353
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
24Coupling light guides
26Optical coupling means
28having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
293with wavelength selective means
29346operating by wave or beam interference
2935Mach-Zehnder configuration, i.e. comprising separate splitting and combining means
29352in a light guide
29353with a wavelength selective element in at least one light guide interferometer arm, e.g. grating, interference filter, resonator
G02B 6/2938
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
24Coupling light guides
26Optical coupling means
28having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
293with wavelength selective means
29379characterised by the function or use of the complete device
2938for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
G02B 6/29395
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
24Coupling light guides
26Optical coupling means
28having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
293with wavelength selective means
29379characterised by the function or use of the complete device
29395configurable, e.g. tunable or reconfigurable
Déposants
  • BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY [GB]/[GB] (AllExceptUS)
  • KASHYAP, Raman [GB]/[GB] (UsOnly)
Inventeurs
  • KASHYAP, Raman
Mandataires
  • WOODWARD, John, Calvin
Données relatives à la priorité
97304350.820.06.1997EP
Langue de publication anglais (EN)
Langue de dépôt anglais (EN)
États désignés
Titre
(EN) MULTI-BAND-PASS FILTER
(FR) FILTRE A BANDES PASSANTES MULTIPLES
front page image
Abrégé
(EN)
A multiple band pass optical filter comprises an interferometer, such as a Michelson interferometer, with de-tuned reflective Bragg gratings 8, 9 that produce multiple, separate, substantially equal reflectivity pass bands for light passing from the interferometer's input port P1 to output port P2.
(FR)
L'invention concerne un filtre optique à bandes passantes multiples comprenant un interféromètre, tel qu'un interféromètre de Michelson, des réseaux de Bragg (8, 9) réfléchissants désaccordés produisant des bandes passantes multiples et séparées à réflexivité sensiblement égale destinées au passage de lumière de l'orifice d'entrée P1 à l'orifice de sortie P2 de l'interféromètre.
Également publié en tant que
EP0990185
CA2293259
AU1998081161
US6141469
Dernières données bibliographiques dont dispose le Bureau international
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