ES2080786T3 - Red de transmision optica con medios de bloqueamiento de frecuencia. - Google Patents

Red de transmision optica con medios de bloqueamiento de frecuencia.

Info

Publication number
ES2080786T3
ES2080786T3 ES90202410T ES90202410T ES2080786T3 ES 2080786 T3 ES2080786 T3 ES 2080786T3 ES 90202410 T ES90202410 T ES 90202410T ES 90202410 T ES90202410 T ES 90202410T ES 2080786 T3 ES2080786 T3 ES 2080786T3
Authority
ES
Spain
Prior art keywords
frequency
subscriber
transmitter
network
local oscillator
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
ES90202410T
Other languages
English (en)
Inventor
Deventer Mattijs Oskar Van
Johan Pieter Bekooij
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.)
Koninklijke PTT Nederland NV
Original Assignee
Koninklijke PTT Nederland NV
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 Koninklijke PTT Nederland NV filed Critical Koninklijke PTT Nederland NV
Application granted granted Critical
Publication of ES2080786T3 publication Critical patent/ES2080786T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04B10/572—Wavelength control
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Small-Scale Networks (AREA)

Abstract

LA ESTABILIZACION DE FRECUENCIA EN UNA RED, POR EJEMPLO EN FORMA DE ESTRELLA O ARBOL RAMIFICADO, PUEDE EJECUTARSE ADECUADAMENTE BLOQUEANDO LAS FRECUENCIAS (F1) DE LOS TRANSMISORES (T1) EN EL CENTRO DE RED HACIA UNA FUENTE DE FRECUENCIA DE REFERENCIA COMUN (CFC) Y, ADEMAS, POR CONEXION DOBLE, BLOQUEANDO (A UNA DISTANCIA DE FRECUENCIA FIJA) LA FRECUENCIA (F2) DEL TRANSMISOR DEL ABONADO (T2) HACIA LA SEÑAL DE TRANSMISION (T1) SEGUN SE RECIBE DEL TRANSMISOR DE LA RED CENTRAL (T1). POR CONEXION DUPLEX SOLAMENTE EL OSCILADOR LOCAL DEL ABONADO (L2) TIENE QUE SINTONIZARSE DE TAL FORMA QUE LA SEÑAL DE TRANSMISION DE LA RED CENTRAL SE RECIBE OPTIMAMENTE . SI EL OSCILADOR LOCAL DEL ABONADO SE SINTONIZA ASI Y LA FRENCUENCIA DEL TRANSMISOR DEL ABONADO TIENE LA FRECUENCIA CORRECTA DESVIADA HACIA LA FRECUENCIA DEL OSCILADOR LOCAL SINTONIZADO (F4), EN EL LATERAL DE LA RED CENTRAL, LAS SEÑALES DEL TRANSMISOR DEL ABONADO SE RECIBIRAN OPTIMAMENTE TAMBIEN SI EL OSCILADOR LOCAL (L1) DEL RECEPTOR DE LA RED CENTRAL (R1) ESTA FIJADO A UNA CIERTA FRECUENCIA (PREDETERMINADA) DESVIADA HACIA LA SEÑAL TRANSMITIDA HACIA EL RECEPTOR DEL ABONADO. LA DETERMINACION DE LA FRECUENCIA, EN EL LADO DE LA RED CENTRAL Y EL LADO DEL ABONADO, PUEDE EJECUTARSE POR MEDIO DE RECEPTORES AUXILIARES (R1A, R2A) Y UNIDADES AFC, GENERANDO LAS DISTINTAS SEÑALES DE CONTROL DE FRENCUENCIA, O POR MEDIO DE LOS RECEPTORES (R1, R2) YA EN USO, QUE CUENTAN CON FILTROS DE PASO MULTIPLE Y UNIDADES AFC. PARA CONSEGUIR FRECUENCIAS IF RELATIVAS BAJAS, SE PREFIEREN CIERTAS ORDENES DE FRECUENCIA
ES90202410T 1990-09-11 1990-09-11 Red de transmision optica con medios de bloqueamiento de frecuencia. Expired - Lifetime ES2080786T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90202410A EP0474921B1 (en) 1990-09-11 1990-09-11 Optical transmission network with frequency locking means

Publications (1)

Publication Number Publication Date
ES2080786T3 true ES2080786T3 (es) 1996-02-16

Family

ID=8205114

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90202410T Expired - Lifetime ES2080786T3 (es) 1990-09-11 1990-09-11 Red de transmision optica con medios de bloqueamiento de frecuencia.

Country Status (7)

Country Link
US (1) US5315425A (es)
EP (1) EP0474921B1 (es)
JP (1) JP2724779B2 (es)
AT (1) ATE130711T1 (es)
CA (1) CA2051020C (es)
DE (1) DE69023768T2 (es)
ES (1) ES2080786T3 (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9201077A (nl) * 1992-06-18 1994-01-17 Nederland Ptt Optisch transmissiesysteem met frequentieregeling.
GB9306136D0 (en) * 1993-03-24 1993-05-12 Plessey Telecomm Opto-electronic circuits
US5443227A (en) * 1993-10-15 1995-08-22 Hughes Aircraft Company Switching control for multiple fiber-guided missile systems
US5532856A (en) * 1994-06-30 1996-07-02 Nec Research Institute, Inc. Planar optical mesh-connected tree interconnect network
JPH09162849A (ja) * 1995-10-05 1997-06-20 Canon Inc 光フィルタの選択波長の制御方法及び波長制御方法及び波長多重方法及び波長補正方法
US5937341A (en) 1996-09-13 1999-08-10 University Of Washington Simplified high frequency tuner and tuning method
US7209664B1 (en) * 2003-06-10 2007-04-24 Nortel Networks Limited Frequency agile transmitter and receiver architecture for DWDM systems
US7272375B2 (en) * 2004-06-30 2007-09-18 Silicon Laboratories Inc. Integrated low-IF terrestrial audio broadcast receiver and associated method
US8651174B2 (en) 2007-05-16 2014-02-18 Gulfstream Services, Inc. Method and apparatus for dropping a pump down plug or ball

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4685099A (en) * 1982-05-19 1987-08-04 Maxon Electronics Co. Ltd. Method and apparatus for duplex communications
US4489413A (en) * 1982-07-19 1984-12-18 M/A-Com Dcc, Inc. Apparatus for controlling the receive and transmit frequency of a transceiver
JPS60242739A (ja) * 1984-05-17 1985-12-02 Nec Corp 周波数多重光送信装置
GB8522821D0 (en) * 1985-09-16 1985-10-23 British Telecomm Frequency referencing system
JPS62122344A (ja) * 1985-11-22 1987-06-03 Hitachi Ltd 光伝送方式
FR2593654B1 (fr) * 1986-01-28 1988-03-11 Comp Generale Electricite Dispositif de telecommunications photoniques coherentes.
EP0298598B1 (en) * 1987-06-09 1995-11-29 AT&T Corp. Optical communication system with a stabilized group of frequencies
JP2625758B2 (ja) * 1987-09-21 1997-07-02 ソニー株式会社 標本化周波数変換回路
JPH01192238A (ja) * 1988-01-28 1989-08-02 Fujitsu Ltd 双方向コヒーレント光通信方式
JPH0642638B2 (ja) * 1989-02-09 1994-06-01 株式会社東芝 無線通信装置

Also Published As

Publication number Publication date
CA2051020A1 (en) 1992-03-12
DE69023768T2 (de) 1996-05-23
DE69023768D1 (de) 1996-01-04
US5315425A (en) 1994-05-24
ATE130711T1 (de) 1995-12-15
JPH04339426A (ja) 1992-11-26
EP0474921A1 (en) 1992-03-18
EP0474921B1 (en) 1995-11-22
CA2051020C (en) 1994-10-18
JP2724779B2 (ja) 1998-03-09

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