NO20001255L - Signaltransmisjonssystem - Google Patents

Signaltransmisjonssystem

Info

Publication number
NO20001255L
NO20001255L NO20001255A NO20001255A NO20001255L NO 20001255 L NO20001255 L NO 20001255L NO 20001255 A NO20001255 A NO 20001255A NO 20001255 A NO20001255 A NO 20001255A NO 20001255 L NO20001255 L NO 20001255L
Authority
NO
Norway
Prior art keywords
optical
traffic
signal transmission
transmission system
monitored
Prior art date
Application number
NO20001255A
Other languages
English (en)
Other versions
NO20001255D0 (no
Inventor
Michael Regan
Original Assignee
Marconi Comm Ltd
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 Marconi Comm Ltd filed Critical Marconi Comm Ltd
Publication of NO20001255D0 publication Critical patent/NO20001255D0/no
Publication of NO20001255L publication Critical patent/NO20001255L/no

Links

Classifications

    • 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]
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

Et Signaltransmisjonssystem bruker et optisk signal for å bære trafikkinformasjon og blir også styrkemodulert av et forholdsvis lavfrekvent signal. Det er upraktisk å overvåke trafikkinformasjonen direkte på den optiske bærebølge med hensyn til nærvær av feil, og derfor overvåkes feilraten i den lavfrekvente modulasjon, ettersom dens feilrate er funnet å være en indikasjon på trafikkfell. Systemet bruker en rekke trafikkbærende optiske bærebølger og også en optisk oppsyns- eller administrasjonsbærebølge, som alle forsynes med lavfrekvente modulasjoner hvis feilrater kan overvåkes for å gi en indikasjon på systemets ytelse.
NO20001255A 1999-03-12 2000-03-10 Signaltransmisjonssystem NO20001255L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9905718A GB2347807B (en) 1999-03-12 1999-03-12 Signal transmission system

Publications (2)

Publication Number Publication Date
NO20001255D0 NO20001255D0 (no) 2000-03-10
NO20001255L true NO20001255L (no) 2000-09-13

Family

ID=10849513

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20001255A NO20001255L (no) 1999-03-12 2000-03-10 Signaltransmisjonssystem

Country Status (8)

Country Link
EP (1) EP1035668A3 (no)
JP (1) JP2000278213A (no)
CN (1) CN1267149A (no)
AU (1) AU2073300A (no)
GB (1) GB2347807B (no)
HK (1) HK1027688A1 (no)
NO (1) NO20001255L (no)
RU (1) RU2000106112A (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7509047B2 (en) 2004-03-12 2009-03-24 Futurewei Technologies, Inc. System and method for subcarrier modulation in ISM band as supervisory channel
US7274872B2 (en) 2004-03-12 2007-09-25 Futurewei Technologies, Inc. System and method for subcarrier modulation as supervisory channel
CN101133575B (zh) * 2004-05-03 2012-06-20 华为技术有限公司 将ism频带副载波调制为监控信道的系统和方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278850A (en) * 1978-04-11 1981-07-14 Kokusai Denshin Denwa Co., Ltd. Monitoring system for optical transmission line repeaters
JPH04362836A (ja) * 1991-06-11 1992-12-15 Hamamatsu Photonics Kk ディジタル通信伝送監視方式
US5825515A (en) * 1991-09-03 1998-10-20 Lucent Technologies Inc. Supervisory apparatus for optical transmission system
US5436750A (en) * 1993-05-07 1995-07-25 Nec Corporation Optical repeatered transmission with fault locating capability
GB2314224A (en) * 1996-06-11 1997-12-17 Stc Submarine Systems Ltd Fibre optic transmission

Also Published As

Publication number Publication date
EP1035668A2 (en) 2000-09-13
GB9905718D0 (en) 1999-05-05
GB2347807B (en) 2001-02-28
JP2000278213A (ja) 2000-10-06
HK1027688A1 (en) 2001-01-19
AU2073300A (en) 2000-09-14
RU2000106112A (ru) 2002-01-20
NO20001255D0 (no) 2000-03-10
CN1267149A (zh) 2000-09-20
EP1035668A3 (en) 2004-01-14
GB2347807A (en) 2000-09-13

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