GB2274751B - Optically amplified transmission systems - Google Patents

Optically amplified transmission systems

Info

Publication number
GB2274751B
GB2274751B GB9400876A GB9400876A GB2274751B GB 2274751 B GB2274751 B GB 2274751B GB 9400876 A GB9400876 A GB 9400876A GB 9400876 A GB9400876 A GB 9400876A GB 2274751 B GB2274751 B GB 2274751B
Authority
GB
United Kingdom
Prior art keywords
transmission systems
amplified transmission
optically amplified
optically
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 - Lifetime
Application number
GB9400876A
Other versions
GB9400876D0 (en
GB2274751A (en
Inventor
Michael George Taylor
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
Priority claimed from GB939302022A external-priority patent/GB9302022D0/en
Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to GB9400876A priority Critical patent/GB2274751B/en
Publication of GB9400876D0 publication Critical patent/GB9400876D0/en
Publication of GB2274751A publication Critical patent/GB2274751A/en
Application granted granted Critical
Publication of GB2274751B publication Critical patent/GB2274751B/en
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
    • H04B10/516—Details of coding or modulation
    • H04B10/532—Polarisation modulation

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
GB9400876A 1993-02-02 1994-01-18 Optically amplified transmission systems Expired - Lifetime GB2274751B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9400876A GB2274751B (en) 1993-02-02 1994-01-18 Optically amplified transmission systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB939302022A GB9302022D0 (en) 1993-02-02 1993-02-02 Optically amplified transmission systems
GB9400876A GB2274751B (en) 1993-02-02 1994-01-18 Optically amplified transmission systems

Publications (3)

Publication Number Publication Date
GB9400876D0 GB9400876D0 (en) 1994-03-16
GB2274751A GB2274751A (en) 1994-08-03
GB2274751B true GB2274751B (en) 1996-11-06

Family

ID=26302377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9400876A Expired - Lifetime GB2274751B (en) 1993-02-02 1994-01-18 Optically amplified transmission systems

Country Status (1)

Country Link
GB (1) GB2274751B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4965857A (en) * 1988-09-30 1990-10-23 Siemens Aktiegesellschaft Method for synchronized polarization switching of an optical transmission signal of an optical transmission system having superheterodyne reception and an apparatus for the implementation of said method
US5023949A (en) * 1988-09-30 1991-06-11 Siemens Aktiengesellschaft Apparatus for generating an FSK-modulated optical signal having two different polarization conditions for an optical transmission system having an optical two-filter FSK super-heterodyne receiver
WO1991018455A1 (en) * 1990-05-11 1991-11-28 Fondazione Ugo Bordoni A multilevel coherent optical system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4965857A (en) * 1988-09-30 1990-10-23 Siemens Aktiegesellschaft Method for synchronized polarization switching of an optical transmission signal of an optical transmission system having superheterodyne reception and an apparatus for the implementation of said method
US5023949A (en) * 1988-09-30 1991-06-11 Siemens Aktiengesellschaft Apparatus for generating an FSK-modulated optical signal having two different polarization conditions for an optical transmission system having an optical two-filter FSK super-heterodyne receiver
WO1991018455A1 (en) * 1990-05-11 1991-11-28 Fondazione Ugo Bordoni A multilevel coherent optical system

Also Published As

Publication number Publication date
GB9400876D0 (en) 1994-03-16
GB2274751A (en) 1994-08-03

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20140117