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1. EP3425823 - DEVICE AND METHOD FOR GENERATING OPTICAL SIGNAL, AND CHIP

Office European Patent Office
Application Number 16898191
Application Date 12.04.2016
Publication Number 3425823
Publication Date 09.01.2019
Publication Kind A4
IPC
H04B 10/50
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
50Transmitters
G02F 1/01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour
CPC
H01S 5/0085
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
005Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
0085for modulating the output, i.e. the laser beam is modulated outside the laser cavity
H04B 10/5051
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
50Transmitters
501Structural aspects
503Laser transmitters
505using external modulation
5051using a series, i.e. cascade, combination of modulators
H04B 10/541
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
50Transmitters
516Details of coding or modulation
54Intensity modulation
541Digital intensity or amplitude modulation
H04J 14/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
14Optical multiplex systems
06Polarisation multiplex systems
G02B 27/283
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
28for polarising
283used for beam splitting or combining
G02F 1/01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
Applicants HUAWEI TECH CO LTD
Inventors WANG YIN
Designated States
Title
(DE) VORRICHTUNG UND VERFAHREN ZUR ERZEUGUNG EINES OPTISCHEN SIGNALS UND CHIP
(EN) DEVICE AND METHOD FOR GENERATING OPTICAL SIGNAL, AND CHIP
(FR) DISPOSITIF ET PROCÉDÉ DE GÉNÉRATION DE SIGNAL OPTIQUE, ET PUCE
Abstract
(EN)
Embodiments of the present invention provide an optical signal generation device. The device includes a laser, a first modulator, a second modulator, a first adjustment module, and a beam combiner. Two ends of the laser are respectively connected to the two modulators, the first modulator is connected to the first adjustment module, and two ends of the beam combiner are respectively connected to the first adjustment module and the second modulator. The laser is configured to: output a first channel of optical signal to the first modulator, and output a second channel of optical signal to the second modulator. The two modulators are separately configured to: receive an optical signal and a loaded electrical modulation signal, and modulate the optical signal based on the electrical modulation signal, to obtain a first channel of modulated optical signal and a second channel of modulated optical signal. The first adjustment module is further configured to adjust a phase of the first channel of modulated optical signal or an optical path to the beam combiner. The beam combiner is configured to: combine the first channel of modulated optical signal obtained after the adjustment and the second channel of modulated optical signal, and output a combined signal. The embodiments of the present invention can reduce costs of the device.

(FR)
Des modes de réalisation de la présente invention portent sur un dispositif de génération d'un signal optique. Le dispositif comprend un laser, un premier modulateur, un second modulateur, un premier module de réglage et un combineur de faisceaux; deux extrémités du laser sont raccordées aux deux modulateurs, respectivement; le premier modulateur est raccordé au premier module de réglage; deux extrémités du combineur de faisceaux sont raccordées au premier module de réglage et au second modulateur, respectivement; le laser est utilisé pour envoyer un premier signal optique au premier modulateur, et envoyer un second signal optique au second modulateur; les deux modulateurs sont utilisés séparément pour recevoir le signal optique et un signal modulé chargé électriquement, et moduler le signal optique selon le signal modulé électriquement pour obtenir un premier signal optique modulé et un second signal optique modulé; le premier module de réglage est également utilisé pour régler la distance optique de la phase du premier signal optique modulé au combineur de faisceaux; le combineur de faisceaux est utilisé pour combiner le premier signal optique modulé réglé et le second signal optique modulé et émettre un signal combiné. Des modes de réalisation de la présente invention peuvent réduire le coût du dispositif.

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