ES2118748T3 - Metodo y aparato para transmitir señales de radiofrecuencia de banda ancha moduladas en amplitud a traves de enlaces opticos. - Google Patents

Metodo y aparato para transmitir señales de radiofrecuencia de banda ancha moduladas en amplitud a traves de enlaces opticos.

Info

Publication number
ES2118748T3
ES2118748T3 ES91901147T ES91901147T ES2118748T3 ES 2118748 T3 ES2118748 T3 ES 2118748T3 ES 91901147 T ES91901147 T ES 91901147T ES 91901147 T ES91901147 T ES 91901147T ES 2118748 T3 ES2118748 T3 ES 2118748T3
Authority
ES
Spain
Prior art keywords
octave
bandwidth
transmiting
width
optical
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES91901147T
Other languages
English (en)
Inventor
Rezin Pidgeon
Frank Little
Leo Thompson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scientific Atlanta LLC
Original Assignee
Scientific Atlanta LLC
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 Scientific Atlanta LLC filed Critical Scientific Atlanta LLC
Application granted granted Critical
Publication of ES2118748T3 publication Critical patent/ES2118748T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/22—Adaptations for optical transmission
    • 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
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/504—Laser transmitters using direct modulation
    • 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
    • H04B10/501—Structural aspects
    • H04B10/506—Multiwavelength transmitters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0298—Wavelength-division multiplex systems with sub-carrier multiplexing [SCM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Multimedia (AREA)
  • Optical Communication System (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

METODO Y APARATO PARA TRANSMITIR SEÑALES DE RADIOFRECUENCIA MODULADAS EN AMPLITUD DE BANDA ANCHA A TRAVES DE ENLACES OPTICOS HAY UNA PLURALIDAD DE CANALES DE RADIOFRECUENCIA SEPARADOS EN DOS O MAS GRUPOS CONTIGUOS DE CANALES, OCUPANDO CADA UNO DE ESTOS GRUPOS MENOS DE UN OCTAVO. UN PRIMER GRUPO DE CANALES OCUPA UNA BANDA DE 54 MHZ A 106 MHZ, UNA SEGUNDA BANDA DE CANALES OCUPA UNA BANDA DE 108 MHZ A 214 MHZ Y, OPCIONALMENTE, OTROS GRUPOS DE CANALES PUEDEN OCUPAR LAS BANDAS DE 214 MHZ A 426 MHZ Y DE 426 MHZ A 850 MHZ. CADA SUBBANDA SE UTILIZA PARA MODULAR LA INTENSIDAD DE LA SALIDA DE UN LASER (1, 2, 3). CADA UNA DE LAS SEÑALES LUMINOSAS MODULADAS EN AMPLITUD RESULTANTES ES TRANSMITIDA A TRAVES DE UN ENLACE OPTICO (F1, F2, F3, F4) A UN LUGAR DE RECEPCION. ALTERNATIVAMENTE, SE PUEDEN SELECCIONAR LOS LASERES (1, 2, 3) PARA GENERAR LUZ A DIFERENTES LONGITUDES DE ONDA CON TODAS LAS SALIDAS TRANSMITIDAS A TRAVES DE UN SOLO ENLACE OPTICO. EN EL LUGAR DE RECEPCION SE RECIBEN CADA UNA DE LAS SEÑALESOPTICAS QUE SON DESMODULADAS POR UN RECEPTOR INDIVIDUAL CORRESPONDIENTE (51, 52, 53). A LA SEÑAL DESMODULADORA SE LE HACE PASAR A TRAVES DE UN FILTRO PASABANDA QUE REDUCE LOS ARMONICOS, LAS DISTORSIONES DE INTERMODULACION Y EL RUIDO PRODUCIDO DURANTE LA TRANSMISION. SE IGUALA LA AMPLITUD DE LAS SEÑALES RESULTANTES ANTES DE APLICARLAS AL COMBINADOR (69, 70) QUE LAS VUELVE A CONVERTIR EN UNA SOLA SEÑAL DE BANDA ANCHA. A CONTINUACION SE PROCESA LA SEÑAL DE BANDA ANCHA PARA REDUCIR LAS DISCONTINUIDADES EN LAS TRANSICIONES ENTRE SUBBANDAS. TODAS LAS SEÑALES DE TELEVISION DE BANDA ANCHA SE PUEDEN MODULAR EN FRECUENCIAS PORTADORAS EN LA MAYOR SUBBANDA DE INTERES (EJ., EN LA BANDA DE 330 A 550 MHZ). DEBIDO A LA SEPARACION DE LAS SEÑALES PROPORCIONADA POR MULTIPLES ENLACES OPTICOS (F1, F2, F3, F4) SE PUEDE UTILIZAR LA MISMA FRECUENCIA PORTADORA EN CADA UNO DE LOS ENLACES PARA LLEVAR UN CANAL DE INFORMACION DE VIDEO DE BANDA ANCHA.
ES91901147T 1989-12-04 1990-11-21 Metodo y aparato para transmitir señales de radiofrecuencia de banda ancha moduladas en amplitud a traves de enlaces opticos. Expired - Lifetime ES2118748T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/446,461 US5191459A (en) 1989-12-04 1989-12-04 Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over optical links

Publications (1)

Publication Number Publication Date
ES2118748T3 true ES2118748T3 (es) 1998-10-01

Family

ID=23772670

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91901147T Expired - Lifetime ES2118748T3 (es) 1989-12-04 1990-11-21 Metodo y aparato para transmitir señales de radiofrecuencia de banda ancha moduladas en amplitud a traves de enlaces opticos.

Country Status (10)

Country Link
US (3) US5191459A (es)
EP (1) EP0507799B1 (es)
JP (1) JPH05502563A (es)
AT (1) ATE167968T1 (es)
AU (1) AU647065B2 (es)
CA (1) CA2069944C (es)
DE (1) DE69032454T2 (es)
DK (1) DK0507799T3 (es)
ES (1) ES2118748T3 (es)
WO (1) WO1991008631A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2369685A1 (es) * 2010-01-29 2011-12-05 Televes, S.A. Equipo de cabecera para distribución de señales de telecomunicación en redes de fibra óptica.

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Also Published As

Publication number Publication date
US5500758A (en) 1996-03-19
US5191459A (en) 1993-03-02
WO1991008631A1 (en) 1991-06-13
US5379141A (en) 1995-01-03
ATE167968T1 (de) 1998-07-15
AU647065B2 (en) 1994-03-17
DE69032454T2 (de) 1999-03-25
EP0507799A1 (en) 1992-10-14
EP0507799B1 (en) 1998-07-01
CA2069944C (en) 1996-08-13
JPH05502563A (ja) 1993-04-28
DK0507799T3 (da) 1998-10-26
DE69032454D1 (de) 1998-08-06
AU6914491A (en) 1991-06-26
EP0507799A4 (en) 1993-06-09
CA2069944A1 (en) 1991-06-05

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