IT1258124B - Metodo per l'eliminazione della modulazione di frequenza da segnali ottici modulati in ampiezza. - Google Patents

Metodo per l'eliminazione della modulazione di frequenza da segnali ottici modulati in ampiezza.

Info

Publication number
IT1258124B
IT1258124B ITTO921016A ITTO921016A IT1258124B IT 1258124 B IT1258124 B IT 1258124B IT TO921016 A ITTO921016 A IT TO921016A IT TO921016 A ITTO921016 A IT TO921016A IT 1258124 B IT1258124 B IT 1258124B
Authority
IT
Italy
Prior art keywords
frequency modulation
modulated
signal
amplitude
conversion
Prior art date
Application number
ITTO921016A
Other languages
English (en)
Original Assignee
Cselt Centro Studi Lab Telecom
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 Cselt Centro Studi Lab Telecom filed Critical Cselt Centro Studi Lab Telecom
Priority to ITTO921016A priority Critical patent/IT1258124B/it
Publication of ITTO921016A0 publication Critical patent/ITTO921016A0/it
Priority to CA002111642A priority patent/CA2111642A1/en
Priority to EP93120381A priority patent/EP0602659A1/en
Publication of ITTO921016A1 publication Critical patent/ITTO921016A1/it
Application granted granted Critical
Publication of IT1258124B publication Critical patent/IT1258124B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • 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
    • H01S5/50—Amplifier structures not provided for in groups H01S5/02 - H01S5/30
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
    • H04B10/2914—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing using lumped semiconductor optical amplifiers [SOA]
    • 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
    • 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
    • H01S5/50—Amplifier structures not provided for in groups H01S5/02 - H01S5/30
    • H01S5/509—Wavelength converting amplifier, e.g. signal gating with a second beam using gain saturation

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)
  • Semiconductor Lasers (AREA)

Abstract

UN DISPOSITIVO LASER, MODULATO DIRETTAMENTE IN AMPIEZZA, PRESENTA UNA INDESIDERATA MODULAZIONE DI FREQUENZA CHE NE ALLARGA LO SPETTRO DI EMISSIONE. IL METODO ELIMINA LA MODULAZIONE DI FREQUENZA INDESIDERATA EFFETTUANDO UNA CONVERSIONE DELLA LUNGHEZZA D'ONDA OTTICA DEL SEGNALE MODULATO, UTILIZZANDO UN AMPLIFICATORE OTTICO A SEMICONDUTTORE COME CONVERTITORE E UN ALTRO LASER NON MODULATO COME GENERATORE DEL SEGNALE DI CONVERSIONE. LA CONVERSIONE DI LUNGHEZZA D'ONDA HA LUOGO NELL'AMPLIFICATORE PER EFFETTO DELLA MODULAZIONE DEL SUO GUADAGNO INDOTTA DA SATURAZIONE. IL SEGNALE ALLA FREQUENZA DEL SEGNALE DI CONVERSIONE, PRELEVATO DA UN FILTRO IN USCITA DAL CONVERTITORE, PRESENTA UNA MODULAZIONE DI AMPIEZZA UGUALE ED OPPOSTA RISPETTO A QUELLA DEL SEGNALE MODULATO IN INGRESSO, MA NON PRESENTA MODULAZIONE DI FREQUENZA.
ITTO921016A 1992-12-17 1992-12-17 Metodo per l'eliminazione della modulazione di frequenza da segnali ottici modulati in ampiezza. IT1258124B (it)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ITTO921016A IT1258124B (it) 1992-12-17 1992-12-17 Metodo per l'eliminazione della modulazione di frequenza da segnali ottici modulati in ampiezza.
CA002111642A CA2111642A1 (en) 1992-12-17 1993-12-16 Method of removing frequency modulation from amplitude modulated optical signals
EP93120381A EP0602659A1 (en) 1992-12-17 1993-12-17 Method of removing frequency modulation from amplitude modulated optical signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO921016A IT1258124B (it) 1992-12-17 1992-12-17 Metodo per l'eliminazione della modulazione di frequenza da segnali ottici modulati in ampiezza.

Publications (3)

Publication Number Publication Date
ITTO921016A0 ITTO921016A0 (it) 1992-12-17
ITTO921016A1 ITTO921016A1 (it) 1994-06-17
IT1258124B true IT1258124B (it) 1996-02-20

Family

ID=11410926

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO921016A IT1258124B (it) 1992-12-17 1992-12-17 Metodo per l'eliminazione della modulazione di frequenza da segnali ottici modulati in ampiezza.

Country Status (3)

Country Link
EP (1) EP0602659A1 (it)
CA (1) CA2111642A1 (it)
IT (1) IT1258124B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2794873B1 (fr) 1999-06-08 2003-12-12 Cit Alcatel Dispositif de restitution d'une onde porteuse d'un signal optique
US7609977B2 (en) * 2002-12-03 2009-10-27 Finisar Corporation Optical transmission using semiconductor optical amplifier (SOA)
US8160455B2 (en) * 2008-01-22 2012-04-17 Finisar Corporation Method and apparatus for generating signals with increased dispersion tolerance using a directly modulated laser transmitter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07109467B2 (ja) * 1989-08-31 1995-11-22 日本電気株式会社 光機能回路

Also Published As

Publication number Publication date
ITTO921016A1 (it) 1994-06-17
CA2111642A1 (en) 1994-06-18
ITTO921016A0 (it) 1992-12-17
EP0602659A1 (en) 1994-06-22

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