FI113719B - Modulator - Google Patents

Modulator Download PDF

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Publication number
FI113719B
FI113719B FI20020800A FI20020800A FI113719B FI 113719 B FI113719 B FI 113719B FI 20020800 A FI20020800 A FI 20020800A FI 20020800 A FI20020800 A FI 20020800A FI 113719 B FI113719 B FI 113719B
Authority
FI
Finland
Prior art keywords
optical
modulator
laser
region
signal
Prior art date
Application number
FI20020800A
Other languages
English (en)
Finnish (fi)
Other versions
FI20020800A (sv
FI20020800A0 (sv
Inventor
Oleg Okhotnikov
Mircea Guina
Original Assignee
Nokia Corp
Modulight Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Corp, Modulight Oy filed Critical Nokia Corp
Priority to FI20020800A priority Critical patent/FI113719B/sv
Publication of FI20020800A0 publication Critical patent/FI20020800A0/sv
Priority to AT03747132T priority patent/ATE556350T1/de
Priority to EP03747132A priority patent/EP1499921B1/en
Priority to AU2003226849A priority patent/AU2003226849A1/en
Priority to PCT/FI2003/000299 priority patent/WO2003091800A1/en
Publication of FI20020800A publication Critical patent/FI20020800A/sv
Application granted granted Critical
Publication of FI113719B publication Critical patent/FI113719B/sv
Priority to US10/974,533 priority patent/US7313291B2/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices 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
    • G02F1/35—Non-linear optics
    • G02F1/3523—Non-linear absorption changing by light, e.g. bleaching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/026—Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers
    • H01S5/0265—Intensity modulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
    • H01S3/1061—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using a variable absorption device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
    • H01S3/1106—Mode locking
    • H01S3/1112—Passive mode locking
    • H01S3/1115—Passive mode locking using intracavity saturable absorbers
    • H01S3/1118—Semiconductor saturable absorbers, e.g. semiconductor saturable absorber mirrors [SESAMs]; Solid-state saturable absorbers, e.g. carbon nanotube [CNT] based
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/0601—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium comprising an absorbing region
    • H01S5/0602—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium comprising an absorbing region which is an umpumped part of the active layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/0607—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying physical parameters other than the potential of the electrodes, e.g. by an electric or magnetic field, mechanical deformation, pressure, light, temperature
    • H01S5/0608—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying physical parameters other than the potential of the electrodes, e.g. by an electric or magnetic field, mechanical deformation, pressure, light, temperature controlled by light, e.g. optical switch
    • H01S5/0609—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying physical parameters other than the potential of the electrodes, e.g. by an electric or magnetic field, mechanical deformation, pressure, light, temperature controlled by light, e.g. optical switch acting on an absorbing region, e.g. wavelength convertors

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • Semiconductor Lasers (AREA)
  • Lasers (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Amplifiers (AREA)
  • Glass Compositions (AREA)
  • Holo Graphy (AREA)

Claims (10)

1. Optisk modulator, vilken optisk modulator omfattar en ingang för mottagning av en optisk signal som skall moduleras, 5 en utgäng, kännetecknad avatt modulatorn dessutom omfattar en flerskiktad struktur som omfattar en absorberarsektion och som kopplar den optiska signalen fran ingangen till utgängen via absorberarsek-tionen, 10 styrmedel för matning av en styrsignal till den flerskiktade struktu- ren; styrsignalen är anordnad styra absorberarsektionens transmissions-egenskaper, varvid styrsignalen är anordnad att generera en laserstrale inom den flerskiktade strukturen, vilken nämnda laserstrale är anordnad gä genom 15 absorberarsektionen för modulering av absorberarsektionens transmissions- egenskaper.
2. Optisk modulator enligt patentkrav 1, kännetecknad avatt absorberarsektionen omfattar atminstone ett skikt där det finns ett aktivt halv-ledaromrade för bildande av en vagledare för lasersträlen.
3. Optisk modulator enligt patentkrav 2, kännetecknad avatt • ··. absorberarsektionen dessutom omfattar flera kvantbrunnsskikt med transmissionsegenskaper som styrs genom att modulera lasersträlens intensitet eller amplitud, och reflekterande skikt för att reflektera de genom absorberarsektionen » · *;·’ 25 överförda optiska signalerna till utgängen. *. · i
4. Optisk modulator enligt patentkrav 1, kännetecknad avatt styrsignalen är en elektrisk signal.
5. Optisk modulator enligt patentkrav 1, kännetecknad avatt ingangen är en öppning atminstone i det yttersta skiktet av den flerskiktade 30 strukturen. * I <
6. Optisk modulator enligt patentkrav 1, kännetecknad avatt ;,, ’ utgängen är en öppning ätminstone i det yttersta skiktet av den flerskiktade ·;·* strukturen.
7. Optisk modulator enligt patentkrav 1, kännetecknad avatt : 35 en öppning i det yttersta skiktet av den flerskiktade strukturen utgör bäde in- gängen och utgängen. 113719
8. Optisk modulatorenligt patentkrav 1,kännetecknad avatt absorberarsektionen en saturerbar absorberarsektion.
9. Moduleringsförfarande för optiska signaler, kännetecknat avatt förfarandet omfattar följande steg: 5 det mottas en optisk signal som skall moduleras, den mottagna signalen kopplas fran en ingang till en utgang via en flerskiktad absorberarsektion, till den flerskiktade strukturen mätäs en styrsignal för att styra ab-sorberarsektionens transmissionsegenskaper, 10 inom den flerskiktade strukturen genereras en lasersträle med styrsignalen, vilken nämnda lasersträle är anordnad gä genom absorberarsektionen för modulering av absorberarsektionens transmissionsegenskaper. * t I * · * » • · · • · • · · • · · • I · • · • · · 1 » • > t i t * l
FI20020800A 2002-04-26 2002-04-26 Modulator FI113719B (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FI20020800A FI113719B (sv) 2002-04-26 2002-04-26 Modulator
AT03747132T ATE556350T1 (de) 2002-04-26 2003-04-16 Optischer modulator
EP03747132A EP1499921B1 (en) 2002-04-26 2003-04-16 Optical modulator
AU2003226849A AU2003226849A1 (en) 2002-04-26 2003-04-16 Optical modulator
PCT/FI2003/000299 WO2003091800A1 (en) 2002-04-26 2003-04-16 Optical modulator
US10/974,533 US7313291B2 (en) 2002-04-26 2004-10-26 Optical modulator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20020800A FI113719B (sv) 2002-04-26 2002-04-26 Modulator
FI20020800 2002-04-26

Publications (3)

Publication Number Publication Date
FI20020800A0 FI20020800A0 (sv) 2002-04-26
FI20020800A FI20020800A (sv) 2003-10-27
FI113719B true FI113719B (sv) 2004-05-31

Family

ID=8563839

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20020800A FI113719B (sv) 2002-04-26 2002-04-26 Modulator

Country Status (6)

Country Link
US (1) US7313291B2 (sv)
EP (1) EP1499921B1 (sv)
AT (1) ATE556350T1 (sv)
AU (1) AU2003226849A1 (sv)
FI (1) FI113719B (sv)
WO (1) WO2003091800A1 (sv)

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Also Published As

Publication number Publication date
ATE556350T1 (de) 2012-05-15
US20050146779A1 (en) 2005-07-07
FI20020800A (sv) 2003-10-27
EP1499921A1 (en) 2005-01-26
WO2003091800A1 (en) 2003-11-06
US7313291B2 (en) 2007-12-25
AU2003226849A8 (en) 2003-11-10
EP1499921B1 (en) 2012-05-02
AU2003226849A1 (en) 2003-11-10
FI20020800A0 (sv) 2002-04-26

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