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1. EP1364432 - OPTICAL TRANSMITTER COMPRISING A STEPWISE TUNABLE LASER

Office
European Patent Office
Application Number 01973387
Application Date 21.09.2001
Publication Number 1364432
Publication Date 26.11.2003
Publication Kind A2
IPC
H01S 5/02
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
02Structural details or components not essential to laser action
H01S 5/022
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
02Structural details or components not essential to laser action
022Mountings; Housings
H01S 5/04
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
04Processes or apparatus for excitation, e.g. pumping
H01S 5/0687
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
06Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
068Stabilisation of laser output parameters
0683by monitoring the optical output parameters
0687Stabilising the frequency of the laser
H01S 5/14
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
10Construction or shape of the optical resonator
14External cavity lasers
H01S 5/183
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
10Construction or shape of the optical resonator
18Surface-emitting lasers
183having a vertical cavity
CPC
H01S 3/1062
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
106by controlling a device placed within the cavity
1062using a controlled passive interferometer, e.g. a Fabry-Perot etalon
H01S 5/0215
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
02Structural details or components not essential to laser action
0206Substrates, e.g. growth, shape, material, removal or bonding;
0215Bonding to the substrate
H01S 5/02415
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
02Structural details or components not essential to laser action
024Arrangements for thermal management
02407Active cooling, e.g. the laser temperature is controlled by a thermo-electric cooler or water cooling
02415by using a thermo-electric cooler [TEC], e.g. Peltier element
H01S 5/041
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
04Processes or apparatus for excitation, e.g. pumping, ; e.g. by electron beams
041Optical pumping
H01S 5/0612
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
06Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
0607by varying physical parameters other than the potential of the electrodes, e.g. by an electric or magnetic field, mechanical deformation, pressure, light, temperature
0612controlled by temperature
H01S 5/0617
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
06Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
0617using memorised or pre-programmed laser characteristics
Applicants BLUE LEAF INC
Inventors GARNACHE ARNAUD
ROMANINI DANIELE
STOECKEL FREDERIC
KATCHANOV ALEXANDRE
KNIPPELS GUIDO
PALDUS BARBARA
RELLA CHRIS
RICHMAN BRUCE
LEVENSON MARC
Designated States
Priority Data 0129706 21.09.2001 US
09668905 22.09.2000 US
09930841 15.08.2001 US
Title
(DE) SCHRITTWEISER ABSTIMMBARER OPTISCHER SENDER
(EN) OPTICAL TRANSMITTER COMPRISING A STEPWISE TUNABLE LASER
(FR) EMETTEUR OPTIQUE COMPRENANT UN LASER A REGLAGE PROGRESSIF
Abstract
(EN)
A laser, useful as part of a multiple wavelength optical fiber transmitter, includes a single mode, multiple quantum well semiconductor amplifying mirror as a gain element an includes a second mirror to form an optical cavity, the length of which defines a sequence of optical modes. The gain element has an arrangement for tuning the laser from one mode to another by altering a temperature of the amplifying mirror.

(FR)
Un laser utile en tant que partie d'un émetteur à fibre optique sur des longueurs d'onde multiples, ne possède qu'un seul mode, un miroir d'amplification à semi-conducteur de puits quantiques multiples en tant qu'élément d'amplification et comprend un deuxième miroir constituant une cavité optique dont la longueur définit une séquence de modes optiques. L'élément d'amplification possède un dispositif servant à régler le laser d'un mode à l'autre par modification d'une température du miroir d'amplification.