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1. WO2006044165 - OPTICAL ADD/DROP MULTIPLEXER WITH RECONFIGURABLE ADD WAVELENGTH SELECTIVE SWITCH

Publication Number WO/2006/044165
Publication Date 27.04.2006
International Application No. PCT/US2005/035208
International Filing Date 30.09.2005
IPC
H04J 14/02 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
G02B 6/26 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
24Coupling light guides
26Optical coupling means
G02B 6/293 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
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
G02B 6/35 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
24Coupling light guides
26Optical coupling means
35having switching means
H04B 10/08 2006.01
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
02Details
08Equipment for monitoring, testing or fault measuring
CPC
H04J 14/0204
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
0201Add-and-drop multiplexing
0202Arrangements therefor
0204Broadcast and select arrangements, e.g. with an optical splitter at the input before adding or dropping
H04J 14/0205
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
0201Add-and-drop multiplexing
0202Arrangements therefor
0205Select and combine arrangements, e.g. with an optical combiner at the output after adding or dropping
H04J 14/0212
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
0201Add-and-drop multiplexing
0202Arrangements therefor
021Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
0212using optical switches or wavelength selective switches [WSS]
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
H04J 14/0219
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
0201Add-and-drop multiplexing
0215Architecture aspects
0219Modular or upgradable architectures
H04J 14/0221
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
0221Power control, e.g. to keep the total optical power constant
Applicants
  • CISCO TECHNOLOGY INC. [US]/[US] (AllExceptUS)
  • GERSTAL, Ornan [IL]/[US] (UsOnly)
  • PICIACCIA, Stefano [IT]/[IT] (UsOnly)
  • MACCHI, Mauro [IT]/[IT] (UsOnly)
  • CASANOVA, Mauro, Rudi [IT]/[IT] (UsOnly)
  • JOHNSON, Ronald [US]/[US] (UsOnly)
Inventors
  • GERSTAL, Ornan
  • PICIACCIA, Stefano
  • MACCHI, Mauro
  • CASANOVA, Mauro, Rudi
  • JOHNSON, Ronald
Agents
  • AKA, Gary
Priority Data
10/959,36606.10.2004US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL ADD/DROP MULTIPLEXER WITH RECONFIGURABLE ADD WAVELENGTH SELECTIVE SWITCH
(FR) MULTIPLEXEUR OPTIQUE A INSERTION/EXTRACTION COMPRENANT UN COMMUTATEUR SELECTIF EN LONGUEUR D'ONDE D'INSERTION RECONFIGURABLE
Abstract
(EN)
Reconfigurable WDM add/drop multiplexer and its method of operation at an add/drop node on an optical fiber carrying a plurality of WDM signals is described. The WDM add/drop multiplexer has a coupler and a demultiplexer element dropping WDM signals from the optical fiber to a plurality of drop terminals, and a wavelength-selective switch adding WDM signals from a plurality of add terminals onto the optical fiber. Coupler splits the WDM signals received from the optical fiber and passes the split WDM signals to the first and second output terminals. Demultiplexer element separates the split WDM signals at the plurality of drop terminals. The wavelength-selective switch, which has an input terminal for connection to the second coupler output terminal and an output terminal for connection to the optical fiber, selectively adds WDM signals on plurality of add terminals to the optical fiber responsive to control signals.
(FR)
La présente invention concerne un multiplexeur à insertion/extraction à multiplexage par répartition en longueur d'onde (wavelength division multiplexing / WDM) reconfigurable, et un procédé pour le faire fonctionner au niveau d'un noeud d'insertion/extraction sur une fibre optique acheminant une pluralité de signaux WDM. Le multiplexeur à insertion/extraction WDM présente un coupleur et un élément démultiplexeur qui extrait des signaux WDM de la fibre optique vers une pluralité de terminaux d'extraction, et un commutateur sélectif en longueur d'onde qui insère des signaux WDM provenant d'une pluralité de terminaux d'insertion, dans la fibre optique. Le coupleur divise les signaux WDM reçus de la fibre optique et fait passer les signaux WDM divisés vers le premier et le second terminal de sortie. L'élément démultiplexeur sépare les signaux WDM divisés au niveau de la pluralité de terminaux d'extraction. Le commutateur sélectif en longueur d'onde qui présente un terminal d'entrée à connecter au second terminal de sortie de coupleur, et un terminal de sortie à connecter à la fibre optique, insère de manière sélective des signaux WDM au niveau de la pluralité de terminaux d'insertion, dans la fibre optique, en réponse à des signaux de commande.
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