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1. EP1130826 - Broad band optical amplifier using free space demultiplexing

Office European Patent Office
Application Number 01301910
Application Date 02.03.2001
Publication Number 1130826
Publication Date 05.09.2001
Publication Kind B1
IPC
G02B 6/293
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
H01S 5/40
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
5Semiconductor lasers
40Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02-H01S5/30128
H01S 5/50
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
5Semiconductor lasers
50Amplifier structures not provided for in groups H01S5/02-H01S5/30100
H04B 10/17
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
12Transmission through light guides, e.g. optical fibres
16Repeaters
17in which processing or amplification is carried out without conversion of the signal from optical form
H04B 10/29
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
H04J 14/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
CPC
H01S 5/4087
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
5Semiconductor lasers
40Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
4025Array arrangements, e.g. constituted by discrete laser diodes or laser bar
4087emitting more than one wavelength
H01S 5/50
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
5Semiconductor lasers
50Amplifier structures not provided for in groups H01S5/02 - H01S5/30
H04B 10/294
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
H04B 2210/258
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
2210Indexing scheme relating to optical transmission systems
25Distortion or dispersion compensation
258treating each wavelength or wavelength band separately
Applicants AGERE SYST OPTOELECTRONICS
Inventors KNOX WAYNE HARVEY
Designated States
Priority Data 09517342 02.03.2000 US
Title
(DE) Breitbandiger optischer Verstärker mit freiraum Demultiplexierung
(EN) Broad band optical amplifier using free space demultiplexing
(FR) Amplificateur optique à large bande avec démultiplexage en espace libre
Abstract
(EN)
A broad band optical amplifier (212) includes at least one free space wavelength demultiplexer/multiplexer (214) and optical gain means (222). The free space demultiplexer/multiplexer (214) receives a multiplexed signal (m- lambda ) and spatially separates it into a plurality of spectral components ( lambda -i) each having a unique peak wavelength. The optical gain means (222) has a plurality of wavelength-selective gain regions (224) that are capable of imparting gain to (i.e., amplifying) an optical signal over a particular narrow range of wavelengths. The operational range (i.e., the particular narrow range of wavelengths) of each gain region (224) is unique. The spatially-separated spectral components are individually delivered to specific gain regions by the demultiplexer/multiplexer as a function of the peak wavelength of the spectral component and the operative range of the gain region.