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1. WO2020088746 - OPTICAL ADD/DROP DEVICE AND ASSEMBLY, AND COMMUNICATIONS NETWORK NODE

Publication Number WO/2020/088746
Publication Date 07.05.2020
International Application No. PCT/EP2018/079730
International Filing Date 30.10.2018
IPC
H04J 14/02 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
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
CPC
G02B 6/29362
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
G02B 6/29383
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
29382including at least adding or dropping a signal, i.e. passing the majority of signals
29383Adding and dropping
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 14/021
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]
H04J 14/0216
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
0201Add-and-drop multiplexing
0215Architecture aspects
0216Bidirectional architectures
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
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
Inventors
  • MOSTI, Sergio
  • LANZONE, Sergio
  • DEHO, Alberto
  • ASSALE, Marco
  • DINCA, Claudio
Agents
  • ERICSSON
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL ADD/DROP DEVICE AND ASSEMBLY, AND COMMUNICATIONS NETWORK NODE
(FR) DISPOSITIF ET ENSEMBLE D'INSERTION/EXTRACTION OPTIQUE, ET NŒUD DE RÉSEAU DE COMMUNICATION
Abstract
(EN)
An optical add/drop device (100) comprising: a common port (102); an add port (106); a first wavelength selective optical filter (110) configured to: receive an optical signal at an add wavelength from the add port and transmit said optical signal at the add wavelength towards the common port; and receive optical signals from the common port and reflect optical signals not at the add wavelength; a second wavelength selective optical filter (114) configured to receive said optical signals from the common port reflected by the first wavelength selective optical filter and transmit an optical signal at a drop wavelength, different to the add wavelength; a drop port (116); and an optical waveguide (118) configured receive said optical signal at the drop wavelength transmitted by the second wavelength selective optical filter and route said optical signal to the drop port.
(FR)
La présente invention concerne un dispositif d'insertion-extraction optique (100) comprenant : un port commun (102); un port d'ajout (106); un premier filtre optique sélectif en longueur d'onde (110) configuré pour : recevoir un signal optique à une longueur d'onde d'addition à partir de l'orifice d'addition et transmettre ledit signal optique à la longueur d'onde d'addition vers l'orifice commun; et recevoir des signaux optiques provenant de l'orifice commun et réfléchir des signaux optiques qui ne sont pas à la longueur d'onde d'addition; un second filtre optique sélectif en longueur d'onde (114) configuré pour recevoir lesdits signaux optiques à partir du port commun réfléchi par le premier filtre optique sélectif en longueur d'onde et transmettre un signal optique à une longueur d'onde d'extraction, différente de la longueur d'onde d'addition; un port d'extraction (116); et un guide d'ondes optique (118) configuré pour recevoir ledit signal optique à la longueur d'onde d'extraction transmise par le second filtre optique sélectif en longueur d'onde et acheminer ledit signal optique vers l'orifice d'extraction.
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