JPS5772438A - Optical communication system - Google Patents

Optical communication system

Info

Publication number
JPS5772438A
JPS5772438A JP55147813A JP14781380A JPS5772438A JP S5772438 A JPS5772438 A JP S5772438A JP 55147813 A JP55147813 A JP 55147813A JP 14781380 A JP14781380 A JP 14781380A JP S5772438 A JPS5772438 A JP S5772438A
Authority
JP
Japan
Prior art keywords
error rate
signal
output light
superposition
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
JP55147813A
Other languages
Japanese (ja)
Inventor
Masayuki Goto
Takashi Kihara
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 JP55147813A priority Critical patent/JPS5772438A/en
Publication of JPS5772438A publication Critical patent/JPS5772438A/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)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To improve the reliability of the whole of the system, by controlling the output light of a light emitting element so as to make the code error rate in a optical receiver to a constant value, and making the margin for various fluctuating factors unnecessary. CONSTITUTION:A frame signal F transmitted in accordance with a fixed rule is always monitored by error rate discriminating circuits 19 and 20 and is compared with a desired error rate, and a discrimination signal as the comparison result is transmitted to the other-party transmission station; and if it is better than the desired error rate, the output light of a light emitting element is so controlled that this output light is reduced to the desired error rate. Known systems such as FM superposition, AM superposition, and PWM are adoptable as means which superpose the discrimination signal (auxiliary signal) in the receiving side onto a main signal and transmit them.
JP55147813A 1980-10-22 1980-10-22 Optical communication system Pending JPS5772438A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55147813A JPS5772438A (en) 1980-10-22 1980-10-22 Optical communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55147813A JPS5772438A (en) 1980-10-22 1980-10-22 Optical communication system

Publications (1)

Publication Number Publication Date
JPS5772438A true JPS5772438A (en) 1982-05-06

Family

ID=15438793

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55147813A Pending JPS5772438A (en) 1980-10-22 1980-10-22 Optical communication system

Country Status (1)

Country Link
JP (1) JPS5772438A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06204986A (en) * 1992-07-22 1994-07-22 Alcatel Cit Digital information transmission system especially through optical link

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06204986A (en) * 1992-07-22 1994-07-22 Alcatel Cit Digital information transmission system especially through optical link

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