JPS5765930A - Searching method for fault of optical fiber transmission system - Google Patents

Searching method for fault of optical fiber transmission system

Info

Publication number
JPS5765930A
JPS5765930A JP14282980A JP14282980A JPS5765930A JP S5765930 A JPS5765930 A JP S5765930A JP 14282980 A JP14282980 A JP 14282980A JP 14282980 A JP14282980 A JP 14282980A JP S5765930 A JPS5765930 A JP S5765930A
Authority
JP
Japan
Prior art keywords
terminal station
fault
optical fiber
measuring equipment
connection box
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
JP14282980A
Other languages
Japanese (ja)
Other versions
JPS6130782B2 (en
Inventor
Hidetoshi Oota
Yoshio Nomura
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 JP14282980A priority Critical patent/JPS5765930A/en
Publication of JPS5765930A publication Critical patent/JPS5765930A/en
Publication of JPS6130782B2 publication Critical patent/JPS6130782B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay 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)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

PURPOSE:To orientate the break point of an optical fiber with high precision, by incorporating current oscillators for fault search having natural frequencies corresponding to a cable connection box for submarine optical cables and respective submarine optical repeating installations and by utilizing the technique of wavelength multiplexing. CONSTITUTION:Current oscillators 26-29 for fault seach have frequencies f0, f1, fj and f0, respectively and are arranged in a transmission terminal station 1, an optical fiber connection box 2, an optical fiber repeater 3, and a receiving terminal station 4. A current level measuring equipment 36 which monitors the signal of a wavelength lambda3 sent from the fiber connection box 2 is provided in the terminal station 1, and a level measuring equipment 37 which monitors the signal of a wavelength lambda2 sent from the fiber repeater 3 is provided in the receiving terminal station 4. Consequently, if a fault point is in the side of the terminal station 1 from the connecton box 2, the fault is detected by the terminal station 1; and if a fault point is between the repeater 3 and the terminal station 4, the fault is detected by the measuring equipment 7 in the side of the terminal station 4.
JP14282980A 1980-10-13 1980-10-13 Searching method for fault of optical fiber transmission system Granted JPS5765930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14282980A JPS5765930A (en) 1980-10-13 1980-10-13 Searching method for fault of optical fiber transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14282980A JPS5765930A (en) 1980-10-13 1980-10-13 Searching method for fault of optical fiber transmission system

Publications (2)

Publication Number Publication Date
JPS5765930A true JPS5765930A (en) 1982-04-21
JPS6130782B2 JPS6130782B2 (en) 1986-07-16

Family

ID=15324578

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14282980A Granted JPS5765930A (en) 1980-10-13 1980-10-13 Searching method for fault of optical fiber transmission system

Country Status (1)

Country Link
JP (1) JPS5765930A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5783899A (en) * 1980-11-13 1982-05-25 Nippon Telegraph & Telephone Optical fiber transmission line defect searching system
WO1983004150A1 (en) * 1982-05-06 1983-11-24 Nippon Telegraph And Telephone Public Corporation Method and device for separating position of fault in light transmission line
JPS60112636A (en) * 1983-11-24 1985-06-19 Nippon Telegr & Teleph Corp <Ntt> Burner for synthesizing fine glass particle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5783899A (en) * 1980-11-13 1982-05-25 Nippon Telegraph & Telephone Optical fiber transmission line defect searching system
JPS6352826B2 (en) * 1980-11-13 1988-10-20 Nippon Denshin Denwa Kk
WO1983004150A1 (en) * 1982-05-06 1983-11-24 Nippon Telegraph And Telephone Public Corporation Method and device for separating position of fault in light transmission line
JPS60112636A (en) * 1983-11-24 1985-06-19 Nippon Telegr & Teleph Corp <Ntt> Burner for synthesizing fine glass particle
JPS6250418B2 (en) * 1983-11-24 1987-10-24 Nippon Telegraph & Telephone

Also Published As

Publication number Publication date
JPS6130782B2 (en) 1986-07-16

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