JPS5441001A - Fault locating system - Google Patents

Fault locating system

Info

Publication number
JPS5441001A
JPS5441001A JP10764477A JP10764477A JPS5441001A JP S5441001 A JPS5441001 A JP S5441001A JP 10764477 A JP10764477 A JP 10764477A JP 10764477 A JP10764477 A JP 10764477A JP S5441001 A JPS5441001 A JP S5441001A
Authority
JP
Japan
Prior art keywords
locating system
fault locating
light
mismatching
combining
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
JP10764477A
Other languages
Japanese (ja)
Inventor
Yasuo Nagai
Masanori Kunida
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 JP10764477A priority Critical patent/JPS5441001A/en
Publication of JPS5441001A publication Critical patent/JPS5441001A/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)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To make it possible to detect the mismatching of the light transmission path system by combining a reflection light level detector to a light directional coupler in the light communication.
JP10764477A 1977-09-07 1977-09-07 Fault locating system Pending JPS5441001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10764477A JPS5441001A (en) 1977-09-07 1977-09-07 Fault locating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10764477A JPS5441001A (en) 1977-09-07 1977-09-07 Fault locating system

Publications (1)

Publication Number Publication Date
JPS5441001A true JPS5441001A (en) 1979-03-31

Family

ID=14464406

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10764477A Pending JPS5441001A (en) 1977-09-07 1977-09-07 Fault locating system

Country Status (1)

Country Link
JP (1) JPS5441001A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5679938A (en) * 1979-12-05 1981-06-30 Fujitsu Ltd Detection system for more than one fault point of optical fiber
JPS5794790U (en) * 1980-12-02 1982-06-10
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
EP0099418A1 (en) * 1982-07-21 1984-02-01 ANT Nachrichtentechnik GmbH Method of controlling the output signals of an optical transmitter coupled to an optical fibre transmitting signals forward and backward
JPS6017049U (en) * 1984-05-31 1985-02-05 富士通株式会社 Optical data highway equipment
JPS63119602A (en) * 1986-11-07 1988-05-24 望月　▲たく▼夫 Jet pump type deep plowing machine
JPH02128090A (en) * 1988-11-08 1990-05-16 Osaka Gas Co Ltd Underground excavating tool

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5679938A (en) * 1979-12-05 1981-06-30 Fujitsu Ltd Detection system for more than one fault point of optical fiber
JPS5794790U (en) * 1980-12-02 1982-06-10
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
EP0099418A1 (en) * 1982-07-21 1984-02-01 ANT Nachrichtentechnik GmbH Method of controlling the output signals of an optical transmitter coupled to an optical fibre transmitting signals forward and backward
JPS6017049U (en) * 1984-05-31 1985-02-05 富士通株式会社 Optical data highway equipment
JPS63119602A (en) * 1986-11-07 1988-05-24 望月　▲たく▼夫 Jet pump type deep plowing machine
JPH02128090A (en) * 1988-11-08 1990-05-16 Osaka Gas Co Ltd Underground excavating tool
JP2755969B2 (en) * 1988-11-08 1998-05-25 大阪瓦斯株式会社 Underground drilling rig

Similar Documents

Publication Publication Date Title
AU518639B2 (en) Device for coupling atleast three light guides
NO157036C (en) PROCEDURE TO ACHIEVE AN AUTOMATIC EVALUATION IN A DIGTALLY CONSTRUCTED TELECOMMUNICATIONS LINE CIRCUIT, AS WELL AS A CIRCUIT TO COMPLETE THE PROCEDURE.
DE3022114A1 (en) OPTICAL EXTINCTION TRANSMISSION MEASURING DEVICE
NL182503C (en) AUTOMATIC BREAKER COUPLING.
JPS5441001A (en) Fault locating system
JPS5336116A (en) Loop transmission system
AU2493277A (en) Optoelectronic detection apparatus
JPS5345249A (en) Light transmitting device
JPS5387243A (en) Light signal propagator
JPS5314503A (en) Photo-communication system
JPS5427445A (en) Variable photo branching and coupling circuit
JPS5374804A (en) Optical transmission system
JPS53136848A (en) Optical branching device
MY8100311A (en) Optoelectronic coupler
JPS5310444A (en) Light branching device
JPS52108702A (en) Code transmission device
JPS53100701A (en) Transmission relay monitor system for optical pcm group
JPS53144204A (en) Transmitting system for optical communication circuit monitor/order signal
JPS5389307A (en) Test system for communicating line system
JPS51120741A (en) Light branching device
JPS5298546A (en) Detector for measuring transmission characteristics of optical fiber
JPS53116701A (en) Light communication supervisory system
JPS51144513A (en) Bidirection relay
JPS53116702A (en) Light transmission supervisory system
JPS5296813A (en) Transbonder for loading satelite