GB2237469B - Optical transmission process and system - Google Patents

Optical transmission process and system

Info

Publication number
GB2237469B
GB2237469B GB8923879A GB8923879A GB2237469B GB 2237469 B GB2237469 B GB 2237469B GB 8923879 A GB8923879 A GB 8923879A GB 8923879 A GB8923879 A GB 8923879A GB 2237469 B GB2237469 B GB 2237469B
Authority
GB
United Kingdom
Prior art keywords
optical transmission
transmission process
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
GB8923879A
Other versions
GB8923879D0 (en
GB2237469A (en
Inventor
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.)
STC PLC
Alcatel Submarine Networks UK Ltd
Nortel Networks Optical Components Ltd
Original Assignee
STC PLC
Northern Telecom Europe Ltd
STC 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 STC PLC, Northern Telecom Europe Ltd, STC Ltd filed Critical STC PLC
Priority to GB8923879A priority Critical patent/GB2237469B/en
Publication of GB8923879D0 publication Critical patent/GB8923879D0/en
Publication of GB2237469A publication Critical patent/GB2237469A/en
Application granted granted Critical
Publication of GB2237469B publication Critical patent/GB2237469B/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
    • H04B10/50—Transmitters
    • H04B10/516—Details of coding or modulation
    • H04B10/54—Intensity 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
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/504—Laser transmitters using direct 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
    • H04B10/516—Details of coding or modulation
    • H04B10/548—Phase or frequency modulation
GB8923879A 1989-10-24 1989-10-24 Optical transmission process and system Expired - Fee Related GB2237469B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8923879A GB2237469B (en) 1989-10-24 1989-10-24 Optical transmission process and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8923879A GB2237469B (en) 1989-10-24 1989-10-24 Optical transmission process and system

Publications (3)

Publication Number Publication Date
GB8923879D0 GB8923879D0 (en) 1989-12-13
GB2237469A GB2237469A (en) 1991-05-01
GB2237469B true GB2237469B (en) 1993-10-20

Family

ID=10665043

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8923879A Expired - Fee Related GB2237469B (en) 1989-10-24 1989-10-24 Optical transmission process and system

Country Status (1)

Country Link
GB (1) GB2237469B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101395827B (en) * 2006-03-03 2013-01-16 诺基亚西门子通信有限责任两合公司 Modulator device for generating an optical transfer signal modulated by means of a binary signal

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2254746B (en) * 1991-04-12 1995-03-29 Northern Telecom Europ Ltd Optical transmitter
GB2257861A (en) * 1991-07-18 1993-01-20 Northern Telecom Ltd Polarisation state insensitive optical discriminator
FR2689345B1 (en) * 1992-03-26 1995-05-12 Cit Alcatel Optical filter including a Fabry-Perot interferometer tunable by rotation.
US5373383A (en) * 1993-03-02 1994-12-13 The Boeing Company Optical carrier filtering for signal/noise and dynamic range improvement
JPH0946318A (en) * 1995-08-01 1997-02-14 Fujitsu Ltd Wavelength multiplexed optical transmission system and optical transmitter to be used for same
CN101073210B (en) * 2004-02-27 2013-04-17 菲尼萨公司 Optical system including FM source and optical spectrum reshaper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101395827B (en) * 2006-03-03 2013-01-16 诺基亚西门子通信有限责任两合公司 Modulator device for generating an optical transfer signal modulated by means of a binary signal

Also Published As

Publication number Publication date
GB8923879D0 (en) 1989-12-13
GB2237469A (en) 1991-05-01

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20041024