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GB2281669B - WDM optical transmission systems - Google Patents

WDM optical transmission systems

Info

Publication number
GB2281669B
GB2281669B GB9318106A GB9318106A GB2281669B GB 2281669 B GB2281669 B GB 2281669B GB 9318106 A GB9318106 A GB 9318106A GB 9318106 A GB9318106 A GB 9318106A GB 2281669 B GB2281669 B GB 2281669B
Authority
GB
United Kingdom
Prior art keywords
optical transmission
transmission systems
wdm optical
wdm
systems
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
GB9318106A
Other versions
GB2281669A (en
GB9318106D0 (en
Inventor
Paul Roos Morkel
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 Ltd
Original Assignee
Northern Telecom 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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to GB9318106A priority Critical patent/GB2281669B/en
Publication of GB9318106D0 publication Critical patent/GB9318106D0/en
Publication of GB2281669A publication Critical patent/GB2281669A/en
Application granted granted Critical
Publication of GB2281669B publication Critical patent/GB2281669B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04B10/29—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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Lasers (AREA)
  • Optical Communication System (AREA)
GB9318106A 1993-09-01 1993-09-01 WDM optical transmission systems Expired - Fee Related GB2281669B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9318106A GB2281669B (en) 1993-09-01 1993-09-01 WDM optical transmission systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9318106A GB2281669B (en) 1993-09-01 1993-09-01 WDM optical transmission systems

Publications (3)

Publication Number Publication Date
GB9318106D0 GB9318106D0 (en) 1993-10-20
GB2281669A GB2281669A (en) 1995-03-08
GB2281669B true GB2281669B (en) 1997-08-06

Family

ID=10741319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9318106A Expired - Fee Related GB2281669B (en) 1993-09-01 1993-09-01 WDM optical transmission systems

Country Status (1)

Country Link
GB (1) GB2281669B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09116492A (en) * 1995-10-18 1997-05-02 Nec Corp Wavelength multiplex light amplifying/repeating method/ device
KR970064034A (en) * 1996-02-10 1997-09-12 김광호 Optical transmission systems and lasers for multi-wavelength automatic power and gain control
JP3402069B2 (en) * 1996-06-12 2003-04-28 Ｋｄｄｉ株式会社 Optical amplification transmission system
US6175436B1 (en) 1996-07-30 2001-01-16 Tellium, Inc. Automatic feedback gain control for multiple channels in a doped optical fiber amplifier

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240228A (en) * 1990-01-23 1991-07-24 Stc Plc Optical transmission system
EP0543570A2 (en) * 1991-11-21 1993-05-26 AT&T Corp. Optical transmission system equalizer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240228A (en) * 1990-01-23 1991-07-24 Stc Plc Optical transmission system
EP0543570A2 (en) * 1991-11-21 1993-05-26 AT&T Corp. Optical transmission system equalizer

Also Published As

Publication number Publication date
GB2281669A (en) 1995-03-08
GB9318106D0 (en) 1993-10-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19971106