JPS5687949A - Monitor system for optical communication line - Google Patents

Monitor system for optical communication line

Info

Publication number
JPS5687949A
JPS5687949A JP16499479A JP16499479A JPS5687949A JP S5687949 A JPS5687949 A JP S5687949A JP 16499479 A JP16499479 A JP 16499479A JP 16499479 A JP16499479 A JP 16499479A JP S5687949 A JPS5687949 A JP S5687949A
Authority
JP
Japan
Prior art keywords
optical
failure
emitting element
light emitting
terminal station
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
JP16499479A
Other languages
Japanese (ja)
Inventor
Masaru Sasaki
Tetsuo Horimatsu
Noboru Tsuneyo
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 JP16499479A priority Critical patent/JPS5687949A/en
Publication of JPS5687949A publication Critical patent/JPS5687949A/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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To enable to monitor each line quickly as required, in an optical communication circuit using a plurality of light sources and fibers, by using a optical switch using electro-optical effect or audio-optical effect. CONSTITUTION:Optical conducting paths 11-1n of n-lines are formed to an electro-optical crystal 1 and on the way, optical switches SW1-SWn and bypasses BP1-BPn are formed. Optical elements 21-2n are opposed to one end of the lines 11-1n and optical fibers FA1-FAn are connected to another end, which are connected to optical fibers F1-Fn. For example, if a failure is taken place in the output of a photodetecting element D1, the light emitting element 21 is operated with the monitor signal to turn on the optical switch SW1. The light of the light emitting element 21 is transmitted to the fiber F2 with the operation of the optical switch SW1, it is received from the photodetector D2 at the terminal station B, and if there is a failure in the monitored wave picked up from the photodetector D2 at the terminal station B, the terminal station A including the light emitting element 21 has the failure, and if no failure, then the fiber F1 has the failure.
JP16499479A 1979-12-19 1979-12-19 Monitor system for optical communication line Pending JPS5687949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16499479A JPS5687949A (en) 1979-12-19 1979-12-19 Monitor system for optical communication line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16499479A JPS5687949A (en) 1979-12-19 1979-12-19 Monitor system for optical communication line

Publications (1)

Publication Number Publication Date
JPS5687949A true JPS5687949A (en) 1981-07-17

Family

ID=15803814

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16499479A Pending JPS5687949A (en) 1979-12-19 1979-12-19 Monitor system for optical communication line

Country Status (1)

Country Link
JP (1) JPS5687949A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7013059B2 (en) * 2002-04-30 2006-03-14 Siemens Aktiengesellschaft Methods for protecting data signals which are being transmitted via optical conductors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7013059B2 (en) * 2002-04-30 2006-03-14 Siemens Aktiengesellschaft Methods for protecting data signals which are being transmitted via optical conductors

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