NO983896L - Kanalvalg i et optisk TDMA-nettverk - Google Patents

Kanalvalg i et optisk TDMA-nettverk

Info

Publication number
NO983896L
NO983896L NO983896A NO983896A NO983896L NO 983896 L NO983896 L NO 983896L NO 983896 A NO983896 A NO 983896A NO 983896 A NO983896 A NO 983896A NO 983896 L NO983896 L NO 983896L
Authority
NO
Norway
Prior art keywords
clock signal
delay
variable delay
electro
modulator
Prior art date
Application number
NO983896A
Other languages
English (en)
Other versions
NO983896D0 (no
Inventor
Kevin Smith
Julian Kazimierz Lucek
Danny Robert Pitcher
Terence Widdowson
David Graham Moodie
Original Assignee
British Telecomm
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 British Telecomm filed Critical British Telecomm
Publication of NO983896D0 publication Critical patent/NO983896D0/no
Publication of NO983896L publication Critical patent/NO983896L/no

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
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external 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
    • H04B10/508—Pulse generation, e.g. generation of solitons
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/08—Time-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
    • H04L7/0033—Correction by delay
    • H04L7/0037—Delay of clock signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0075—Arrangements for synchronising receiver with transmitter with photonic or optical means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/08—Time-division multiplex systems
    • H04J14/083—Add and drop multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • H04L7/0337—Selecting between two or more discretely delayed clocks or selecting between two or more discretely delayed received code signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

En mottaker i et knutepunkt i et optisk nettverk mottar et optisk klokkesignal og en OTDM-datastrøm. En detektor omformer klokkesignalet til det elektriske domene. Et trinn med variabel forsinkelse påfører en valgt forsinkelse på klokke- signalet i det elektriske domene. En ikke-lineær elektro-optisk modulator som kan være en elektro-absorbsjonsmodulator, mottar OTDM-datastrømmen på sin optis- ke inngang. En elektrisk styreinngang for modulatoren er koplet til utgangen fra trinnet med variabel.forsinkelse. Den elektro-optiske modulator frembringer på sin utgangsside en OTDM-kanal som velges ved å innstille forsinkelsen i trinnet med variabel forsinkelse. Dette trinn med variabel forsinkelse kan omfatte et antall logiske porter, særlig OG-porter, som er koplet mellom mikrostrimlene i et par av mikrostirmmel-forsinkelseslinjer. Portene styres for å danne forskjellige overfø- ringsbarier med forskjellige tilsvarende forsinkelsestider for klokkesignalet.
NO983896A 1996-02-26 1998-08-25 Kanalvalg i et optisk TDMA-nettverk NO983896L (no)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9604020.9A GB9604020D0 (en) 1996-02-26 1996-02-26 Optical network
EP96301277 1996-02-26
PCT/GB1997/000429 WO1997031443A1 (en) 1996-02-26 1997-02-14 Channel selection in an optical tdma network

Publications (2)

Publication Number Publication Date
NO983896D0 NO983896D0 (no) 1998-08-25
NO983896L true NO983896L (no) 1998-10-23

Family

ID=26143575

Family Applications (1)

Application Number Title Priority Date Filing Date
NO983896A NO983896L (no) 1996-02-26 1998-08-25 Kanalvalg i et optisk TDMA-nettverk

Country Status (11)

Country Link
US (1) US5784185A (no)
EP (1) EP0883942B1 (no)
JP (1) JP3989958B2 (no)
CN (1) CN1092882C (no)
AU (1) AU727247B2 (no)
CA (1) CA2247189C (no)
DE (1) DE69736170T2 (no)
ES (1) ES2267130T3 (no)
GB (1) GB9604020D0 (no)
NO (1) NO983896L (no)
WO (1) WO1997031443A1 (no)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0818091B1 (en) 1995-03-31 2006-05-03 BRITISH TELECOMMUNICATIONS public limited company Dark pulse generation and transmission
US6208672B1 (en) * 1996-02-16 2001-03-27 British Telecommunications Public Limited Company Optical pulse source
US6396604B1 (en) * 1996-02-26 2002-05-28 British Telecommunications Plc Dark pulse TDMA optical network
FR2774536B1 (fr) * 1998-02-02 2000-03-10 Alsthom Cge Alcatel Procede de detection d'un ou plusieurs canaux libres dans un multiplex temporel optique, un dispositif de mise en oeuvre et une application du dispositif
AU3279699A (en) * 1998-02-25 1999-09-15 Auckland Uniservices Limited System and method for demultiplexing in optical communication systems

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4427895A (en) * 1981-06-12 1984-01-24 Eng Sverre T Method and apparatus for optical fiber communication operating at gigabits per second
JPS59198033A (ja) * 1983-04-25 1984-11-09 Nippon Telegr & Teleph Corp <Ntt> 時間多重光信号分離装置
US4991975A (en) * 1988-11-22 1991-02-12 At&T Bell Laboratories Division multiplexing and demultiplexing means lightwave communication system comprising optical time
GB8923488D0 (en) * 1989-10-18 1989-12-06 British Telecomm Optical receiver
EP0555063B1 (en) * 1992-02-03 1999-04-14 Kokusai Denshin Denwa Kabushiki Kaisha Optical waveform shaping device
US5329393A (en) * 1992-10-15 1994-07-12 At&T Bell Laboratories Optical Nyquist rate multiplexer and demultiplexer

Also Published As

Publication number Publication date
EP0883942A1 (en) 1998-12-16
DE69736170T2 (de) 2007-05-03
DE69736170D1 (de) 2006-08-03
CN1092882C (zh) 2002-10-16
AU1802997A (en) 1997-09-10
CA2247189C (en) 2002-06-25
CA2247189A1 (en) 1997-08-28
NO983896D0 (no) 1998-08-25
US5784185A (en) 1998-07-21
JP2002515200A (ja) 2002-05-21
CN1213473A (zh) 1999-04-07
JP3989958B2 (ja) 2007-10-10
GB9604020D0 (en) 1996-04-24
AU727247B2 (en) 2000-12-07
ES2267130T3 (es) 2007-03-01
EP0883942B1 (en) 2006-06-21
WO1997031443A1 (en) 1997-08-28

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application