JPS57152739A - Transmission system for optical cable - Google Patents

Transmission system for optical cable

Info

Publication number
JPS57152739A
JPS57152739A JP56037277A JP3727781A JPS57152739A JP S57152739 A JPS57152739 A JP S57152739A JP 56037277 A JP56037277 A JP 56037277A JP 3727781 A JP3727781 A JP 3727781A JP S57152739 A JPS57152739 A JP S57152739A
Authority
JP
Japan
Prior art keywords
modulated
optical
signals
intensity
television
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.)
Granted
Application number
JP56037277A
Other languages
Japanese (ja)
Other versions
JPS5928098B2 (en
Inventor
Koichi Asatani
Kenichi Sato
Tetsuya Miki
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP56037277A priority Critical patent/JPS5928098B2/en
Publication of JPS57152739A publication Critical patent/JPS57152739A/en
Publication of JPS5928098B2 publication Critical patent/JPS5928098B2/en
Expired 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
    • H04J14/0298—Wavelength-division multiplex systems with sub-carrier multiplexing [SCM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To improve the nonlinear distortion and the S/N ratio, by providing a semiconductor laser in accordance with each television input signal and synthesizing semiconductor lasers in an optical mixer to transmit them to the receiving side after modulating the intensity of semiconductor lasers. CONSTITUTION:N-number of inputted television signals are modulated by modulators 21-2n having carrier frequencies which are different from one another and are so set that waves to be modulated do not overlap one another, and the intensity of semiconductor lasers 31-3n is modulated by RF modulated television signals respectively. Intensity modulated optical signals 8 are connected to an optical mixer 7 and are mixed in the optical region and are multiplexed. Multiplexed optical signals are taken out to optical transmission lines 4 and are converted to electric signals by photodetectors 51-5n in the receiving side and are amplified to required levels by amplifiers 61-6n and are taken out as electric outputs and are connected to a television picture receiver or the like.
JP56037277A 1981-03-17 1981-03-17 Optical cable transmission method Expired JPS5928098B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56037277A JPS5928098B2 (en) 1981-03-17 1981-03-17 Optical cable transmission method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56037277A JPS5928098B2 (en) 1981-03-17 1981-03-17 Optical cable transmission method

Publications (2)

Publication Number Publication Date
JPS57152739A true JPS57152739A (en) 1982-09-21
JPS5928098B2 JPS5928098B2 (en) 1984-07-10

Family

ID=12493186

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56037277A Expired JPS5928098B2 (en) 1981-03-17 1981-03-17 Optical cable transmission method

Country Status (1)

Country Link
JP (1) JPS5928098B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63148724A (en) * 1986-12-12 1988-06-21 Kandenko Co Ltd Television image signal multiplex transmission method in catv system
US4832433A (en) * 1986-12-31 1989-05-23 Hughes Aircraft Company Fiber-optic feed network using series/parallel connected light emitting opto-electronic components
EP0790717A1 (en) * 1996-02-16 1997-08-20 Robert Bosch Gmbh Device for transmittimg several received broadband radio signals to a signal receiver and signal receiver therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63148724A (en) * 1986-12-12 1988-06-21 Kandenko Co Ltd Television image signal multiplex transmission method in catv system
US4832433A (en) * 1986-12-31 1989-05-23 Hughes Aircraft Company Fiber-optic feed network using series/parallel connected light emitting opto-electronic components
EP0790717A1 (en) * 1996-02-16 1997-08-20 Robert Bosch Gmbh Device for transmittimg several received broadband radio signals to a signal receiver and signal receiver therefor

Also Published As

Publication number Publication date
JPS5928098B2 (en) 1984-07-10

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