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1. WO2002001772 - OPTICAL WAVELENGTH-DIVISION MULTIPLEXING AND DEMULTIPLEXING BY USING A COMMON OPTICAL BANDPASS FILTER

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Publication Number WO/2002/001772
Publication Date 03.01.2002
International Application No. PCT/US2001/019256
International Filing Date 15.06.2001
Chapter 2 Demand Filed 14.01.2002
IPC
G02B 6/34 2006.1
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24Coupling light guides
26Optical coupling means
34utilising prism or grating
H04J 14/02 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
CPC
G02B 6/29358
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
29358Multiple beam interferometer external to a light guide, e.g. Fabry-Pérot, etalon, VIPA plate, OTDL plate, continuous interferometer, parallel plate resonator
G02B 6/29364
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
29361Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
29362Serial cascade of filters or filtering operations, e.g. for a large number of channels
29364Cascading by a light guide path between filters or filtering operations, e.g. fibre interconnected single filter modules
G02B 6/2937
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
29361Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
2937In line lens-filtering-lens devices, i.e. elements arranged along a line and mountable in a cylindrical package for compactness, e.g. 3- port device with GRIN lenses sandwiching a single filter operating at normal incidence in a tubular package
H04J 14/0206
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
0201Add-and-drop multiplexing
0202Arrangements therefor
0206Express channels arrangements
H04J 14/0209
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
0201Add-and-drop multiplexing
0202Arrangements therefor
0209Multi-stage arrangements, e.g. by cascading multiplexers or demultiplexers
H04J 14/0213
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
0201Add-and-drop multiplexing
0202Arrangements therefor
0213Groups of channels or wave bands arrangements
Applicants
  • VERSATILE OPTICAL NETWORKS, INC. [US]/[US] (AllExceptUS)
  • WHITEHEAD, Frank [US]/[US] (UsOnly)
  • HAJJAR, Roger, A. [US]/[US] (UsOnly)
Inventors
  • WHITEHEAD, Frank
  • HAJJAR, Roger, A.
Agents
  • HARRIS, Scott, C.
Priority Data
09/799,88305.03.2001US
60/211,89315.06.2000US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL WAVELENGTH-DIVISION MULTIPLEXING AND DEMULTIPLEXING BY USING A COMMON OPTICAL BANDPASS FILTER
(FR) MULTIPLEXAGE ET DEMULTIPLEXAGE EN LONGUEUR D'ONDE OPTIQUE AU MOYEN D'UN FILTRE PASSE-BANDE OPTIQUE EN VUE D'AJOUTER, DE DEPLACER, OU D'ECHANGER UNE OU PLUSIEURS VOIES
front page image
Abstract
(EN) Techniques for using the same optical bandpass filter to add, drop or exchange a WDM channel in a WDM device. The device includes a first lens (150), a second lens (160) and an optical bandpass filter (170). The first lens (150) and the second lens (160) are spaced from each other and define a common optical axis. The optical bandpass filter (170) is located between the first and the second lenses (150, 160). There are first and second fiber ports (110, 140) located at a first focal plane (152) and symmetrically displaced from the common optical axis in a plane. The device further includes third and fourth fiber ports (130, 120) at a second focal plane (162) and symmetrically displaced from the common optical axis in the same plane.
(FR) L'invention concerne des techniques d'utilisation d'un même filtre de passe-bande optique en vue d'ajouter, de déplacer ou d'échanger une voie de multiplexage en longueur d'onde (MRL) dans un dispositif MRL.
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