DE69423994T2 - Übertragungssystem und -verfahren mit optischen Verstärkern - Google Patents

Übertragungssystem und -verfahren mit optischen Verstärkern

Info

Publication number
DE69423994T2
DE69423994T2 DE69423994T DE69423994T DE69423994T2 DE 69423994 T2 DE69423994 T2 DE 69423994T2 DE 69423994 T DE69423994 T DE 69423994T DE 69423994 T DE69423994 T DE 69423994T DE 69423994 T2 DE69423994 T2 DE 69423994T2
Authority
DE
Germany
Prior art keywords
transmission system
optical amplifiers
amplifiers
optical
transmission
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 - Fee Related
Application number
DE69423994T
Other languages
English (en)
Other versions
DE69423994D1 (de
Inventor
Paul Anthony Kirkby
Richard Edward Epworth
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.)
Nortel Networks Corp
Original Assignee
Nortel Networks Corp
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 Nortel Networks Corp filed Critical Nortel Networks Corp
Publication of DE69423994D1 publication Critical patent/DE69423994D1/de
Application granted granted Critical
Publication of DE69423994T2 publication Critical patent/DE69423994T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0221—Power control, e.g. to keep the total optical power constant
    • 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
    • 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
    • H04B10/293—Signal power control
    • H04B10/2933—Signal power control considering the whole optical path
    • H04B10/2935—Signal power control considering the whole optical path with a cascade of amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
DE69423994T 1993-03-23 1994-03-14 Übertragungssystem und -verfahren mit optischen Verstärkern Expired - Fee Related DE69423994T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939305977A GB9305977D0 (en) 1993-03-23 1993-03-23 Transmission system incorporating optical amplifiers

Publications (2)

Publication Number Publication Date
DE69423994D1 DE69423994D1 (de) 2000-05-25
DE69423994T2 true DE69423994T2 (de) 2000-08-17

Family

ID=10732567

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69423994T Expired - Fee Related DE69423994T2 (de) 1993-03-23 1994-03-14 Übertragungssystem und -verfahren mit optischen Verstärkern

Country Status (5)

Country Link
US (1) US5452116A (de)
EP (1) EP0617527B1 (de)
JP (1) JPH08125634A (de)
DE (1) DE69423994T2 (de)
GB (2) GB9305977D0 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10102870A1 (de) * 2001-01-23 2002-08-29 Siemens Ag Vorrichtung und Verfahren zur Kühlung von temperaturkritischen Bauteilen

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US6292290B1 (en) * 1999-12-20 2001-09-18 Nortel Networks Limited Methods and apparatus for adjusting power in an optical signal, for providing a seamless optical ring and for providing a bidirectional equalized amplifier
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Publication number Priority date Publication date Assignee Title
DE10102870A1 (de) * 2001-01-23 2002-08-29 Siemens Ag Vorrichtung und Verfahren zur Kühlung von temperaturkritischen Bauteilen

Also Published As

Publication number Publication date
GB9305977D0 (en) 1993-05-12
GB9404867D0 (en) 1994-04-27
EP0617527B1 (de) 2000-04-19
DE69423994D1 (de) 2000-05-25
GB2276787A (en) 1994-10-05
US5452116A (en) 1995-09-19
EP0617527A1 (de) 1994-09-28
GB2276787B (en) 1996-10-23
JPH08125634A (ja) 1996-05-17

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee