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1. WO2000041346 - OPTICAL AMPLIFIER WITH POWER DEPENDENT FEEDBACK

Publication Number WO/2000/041346
Publication Date 13.07.2000
International Application No. PCT/US1999/029620
International Filing Date 14.12.1999
Chapter 2 Demand Filed 16.06.2000
IPC
H01S 3/10 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
10Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
H01S 3/06 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
06Construction or shape of active medium
H01S 3/13 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
10Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
13Stabilisation of laser output parameters, e.g. frequency, amplitude
H04B 10/296 2013.01
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
29Repeaters
291in which processing or amplification is carried out without conversion of the main signal from optical form
293Signal power control
294in a multiwavelength system, e.g. gain equalisation
296Transient power control, e.g. due to channel add/drop or rapid fluctuations in the input power
H04J 14/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
H04J 14/02 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
CPC
H01S 3/1302
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
10Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
13Stabilisation of laser output parameters, e.g. frequency, amplitude
1301in optical amplifiers
1302by all-optical means, e.g. gain-clamping
H04B 10/296
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
29Repeaters
291in which processing or amplification is carried out without conversion of the main signal from optical form
293Signal power control
294in a multiwavelength system, e.g. gain equalisation
296Transient power control, e.g. due to channel add/drop or rapid fluctuations in the input power
H04J 14/0201
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
02Wavelength-division multiplex systems
0201Add-and-drop multiplexing
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
H04Q 2011/0049
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
QSELECTING
11Selecting arrangements for multiplex systems
0001using optical switching
0005Switch and router aspects
0037Operation
0049Crosstalk reduction; Noise; Power budget
Applicants
  • CORNING INCORPORATED [US/US]; 1 Riverfront Plaza Corning, NY 14831, US
Inventors
  • COWLE, Gregory, J.; US
  • HALL, Douglas, W.; US
  • McNAMARA, Thomas, W.; US
  • WANG, Chia, C.; US
Agents
  • SHORT, Svetlana, Z.; Corning Incorporation Patent Department SP TI 3-1 Corning, NY 14831, US
Priority Data
60/114,99606.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL AMPLIFIER WITH POWER DEPENDENT FEEDBACK
(FR) AMPLIFICATEUR OPTIQUE AVEC RETOUR DEPENDANT DE LA PUISSANCE
Abstract
(EN)
An optical amplifier includes an optical feedback resonant laser cavity (OFRC) including a power dependent loss element (PDLE) having the characteristic that as the incident laser power on the PDLE increases the cavity loss decreases. The OFRC with the PDLE provides optical gain control or optical power control for a WDM amplifier or a single channel power equalization amplifier (PEA), respectively. A 1xNxN WADM node incorporating more than one of these amplifiers, at least some of which commonly share a pump source, and a method for controlling a transient power change in a single channel optical amplifier or reducing a DC gain error in a WDM optical amplifier that are subject to dynamically variable operating conditions at an input of the amplifier, are also disclosed.
(FR)
L'invention concerne un amplificateur optique qui comprend une cavité laser résonante à retour optique (OFRC) comportant un élément à pertes dépendant de la puissance (PDLE). Ledit élément à pertes possède une caractéristique selon laquelle, quand la puissance laser incidente qui lui est appliquée augmente, les pertes de la cavité diminuent. L'amplificateur pourvu du PDLE assure la commande du gain optique ou de la puissance optique pour un amplificateur à multiplexage par répartition en longueur d'onde (WDM) ou un amplificateur égaliseur de puissance monocanal (PEA). L'invention concerne également un noeud 1xNxN WADM comportant plus d'un desdits amplificateurs, dont au moins certains partagent une source de pompage de la manière habituelle; et un procédé qui permet de commander un changement de puissance transitoire dans un amplificateur de puissance monocanal ou de réduire l'erreur de gain courant continu dans un amplificateur WDM soumis à des conditions de fonctionnement variant de manière dynamique à l'entrée dudit amplificateur.
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