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JPS5693443A - Optical communication system - Google Patents

Optical communication system

Info

Publication number
JPS5693443A
JPS5693443A JP16918079A JP16918079A JPS5693443A JP S5693443 A JPS5693443 A JP S5693443A JP 16918079 A JP16918079 A JP 16918079A JP 16918079 A JP16918079 A JP 16918079A JP S5693443 A JPS5693443 A JP S5693443A
Authority
JP
Japan
Prior art keywords
level
light receiving
station
light
emitting element
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.)
Pending
Application number
JP16918079A
Other languages
Japanese (ja)
Inventor
Masayuki Goto
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16918079A priority Critical patent/JPS5693443A/en
Publication of JPS5693443A publication Critical patent/JPS5693443A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To extend the life of the light emitting element without degradation of the code error rate, by monitoring the light receiving level of the optical signal from the other-party station and by controlling the light emission output level to the other-party station on a basis of the monitor result, in the two-way optical communication system. CONSTITUTION:Inout signal Ain in one station 10 is transmitted as a optical signal from light emitting element 13 through input interface circuit 11 and light emitting element driving circuit 12. The signal which passed through a pair of reciprocation light transmission lines 30A and 30B is received by light receiving element 24 in the other station 20 and is reproduced as the output signal by output interface circuit 26. The light receiving level in light receiving element 24 is monitored by light receiving level monitor circuit 41 in station 20 to detect level fluctuation. The light emission output level of light emitting element 23 is controlled on a basis of this monitor result to set the light receiving level in light receiving element 14 in station 10 to a level obtained by raising a minimum required level slightly.
JP16918079A 1979-12-27 1979-12-27 Optical communication system Pending JPS5693443A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16918079A JPS5693443A (en) 1979-12-27 1979-12-27 Optical communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16918079A JPS5693443A (en) 1979-12-27 1979-12-27 Optical communication system

Publications (1)

Publication Number Publication Date
JPS5693443A true JPS5693443A (en) 1981-07-29

Family

ID=15881723

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16918079A Pending JPS5693443A (en) 1979-12-27 1979-12-27 Optical communication system

Country Status (1)

Country Link
JP (1) JPS5693443A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143148U (en) * 1983-03-15 1984-09-25 株式会社山武 Optical multiplex transmission equipment
JPH06252853A (en) * 1992-12-03 1994-09-09 Yagi Antenna Co Ltd Spatial optical transmission communication equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143148U (en) * 1983-03-15 1984-09-25 株式会社山武 Optical multiplex transmission equipment
JPH06252853A (en) * 1992-12-03 1994-09-09 Yagi Antenna Co Ltd Spatial optical transmission communication equipment

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