JPS53130053A - Circuit supervisory system of optical fiber cable - Google Patents
Circuit supervisory system of optical fiber cableInfo
- Publication number
- JPS53130053A JPS53130053A JP4620377A JP4620377A JPS53130053A JP S53130053 A JPS53130053 A JP S53130053A JP 4620377 A JP4620377 A JP 4620377A JP 4620377 A JP4620377 A JP 4620377A JP S53130053 A JPS53130053 A JP S53130053A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- fiber cable
- supervisory system
- circuit supervisory
- light wave
- 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
Links
Landscapes
- Optical Communication System (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
PURPOSE: To supervise a cable circuit with an exclusive light wave common for signal transmission system by using a light wave of a wavelength different from that of light wave for signal transmission, and providing a light mixer and a photospectroscope having wavelength selection characteristics and directionality.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4620377A JPS53130053A (en) | 1977-04-20 | 1977-04-20 | Circuit supervisory system of optical fiber cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4620377A JPS53130053A (en) | 1977-04-20 | 1977-04-20 | Circuit supervisory system of optical fiber cable |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS53130053A true JPS53130053A (en) | 1978-11-13 |
Family
ID=12740516
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4620377A Pending JPS53130053A (en) | 1977-04-20 | 1977-04-20 | Circuit supervisory system of optical fiber cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS53130053A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2453403A1 (en) * | 1979-04-06 | 1980-10-31 | Bertin & Cie | Optical fibre link parasitic connection detector - uses second source whose amplitude and time shifts are memorised |
EP0054363A1 (en) * | 1980-12-17 | 1982-06-23 | Imperial Chemical Industries Plc | Apparatus for gathering data from a plurality of condition responsive optical sensors |
JPS589039A (en) * | 1981-07-10 | 1983-01-19 | Fujitsu Ltd | Monitoring system for optical transmission line |
JPS5860838A (en) * | 1981-10-07 | 1983-04-11 | Oi Denki Kk | Monitoring device for signal transmission line |
JPS58191948A (en) * | 1982-05-06 | 1983-11-09 | Nippon Telegr & Teleph Corp <Ntt> | Trouble searching system of optical transmission line |
JPS59110236A (en) * | 1982-12-15 | 1984-06-26 | Mitsubishi Electric Corp | Monitoring device for transmission loss of optical fiber wire |
JPS59166837A (en) * | 1983-03-14 | 1984-09-20 | Tohoku Electric Power Co Inc | Optical fiber cable monitoring system |
JPS59169238A (en) * | 1983-03-16 | 1984-09-25 | Mitsubishi Electric Corp | Optical transmitter |
JPS59196438A (en) * | 1983-04-22 | 1984-11-07 | Nippon Telegr & Teleph Corp <Ntt> | Method and device for separating interrupted position in light transmitting path |
JPS63193750A (en) * | 1987-02-06 | 1988-08-11 | Nippon Telegr & Teleph Corp <Ntt> | Method for maintaining and testing subscriber optical line network |
JPS63289511A (en) * | 1987-05-22 | 1988-11-28 | Furukawa Electric Co Ltd:The | Method for contrasting core of optical path |
JP2007251683A (en) * | 2006-03-16 | 2007-09-27 | Fujitsu Ltd | Optical characteristics measurement method and system |
US7280756B2 (en) | 2002-07-05 | 2007-10-09 | Nec Corporation | Optical signal transmission system, optical signal transmitter, optical signal receiver, method of transmitting optical signal and method of receiving optical signal |
JP2009103526A (en) * | 2007-10-22 | 2009-05-14 | Furukawa Electric Co Ltd:The | Optical line failure detection device, optical line failure detection method, and light source device and light receiving device used therefor |
JP2014017451A (en) * | 2012-07-11 | 2014-01-30 | Fuji Xerox Co Ltd | Optical transmission system and surface-emitting semiconductor laser |
-
1977
- 1977-04-20 JP JP4620377A patent/JPS53130053A/en active Pending
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2453403A1 (en) * | 1979-04-06 | 1980-10-31 | Bertin & Cie | Optical fibre link parasitic connection detector - uses second source whose amplitude and time shifts are memorised |
EP0054363A1 (en) * | 1980-12-17 | 1982-06-23 | Imperial Chemical Industries Plc | Apparatus for gathering data from a plurality of condition responsive optical sensors |
JPS589039A (en) * | 1981-07-10 | 1983-01-19 | Fujitsu Ltd | Monitoring system for optical transmission line |
JPS5860838A (en) * | 1981-10-07 | 1983-04-11 | Oi Denki Kk | Monitoring device for signal transmission line |
JPH0381094B2 (en) * | 1982-05-06 | 1991-12-27 | Nippon Telegraph & Telephone | |
JPS58191948A (en) * | 1982-05-06 | 1983-11-09 | Nippon Telegr & Teleph Corp <Ntt> | Trouble searching system of optical transmission line |
JPS59110236A (en) * | 1982-12-15 | 1984-06-26 | Mitsubishi Electric Corp | Monitoring device for transmission loss of optical fiber wire |
JPS59166837A (en) * | 1983-03-14 | 1984-09-20 | Tohoku Electric Power Co Inc | Optical fiber cable monitoring system |
JPS59169238A (en) * | 1983-03-16 | 1984-09-25 | Mitsubishi Electric Corp | Optical transmitter |
JPS59196438A (en) * | 1983-04-22 | 1984-11-07 | Nippon Telegr & Teleph Corp <Ntt> | Method and device for separating interrupted position in light transmitting path |
JPH04214B2 (en) * | 1983-04-22 | 1992-01-06 | Nippon Telegraph & Telephone | |
JPS63193750A (en) * | 1987-02-06 | 1988-08-11 | Nippon Telegr & Teleph Corp <Ntt> | Method for maintaining and testing subscriber optical line network |
JPS63289511A (en) * | 1987-05-22 | 1988-11-28 | Furukawa Electric Co Ltd:The | Method for contrasting core of optical path |
JP2803726B2 (en) * | 1987-05-22 | 1998-09-24 | 古河電気工業株式会社 | Optical fiber line contrast method |
US7280756B2 (en) | 2002-07-05 | 2007-10-09 | Nec Corporation | Optical signal transmission system, optical signal transmitter, optical signal receiver, method of transmitting optical signal and method of receiving optical signal |
JP2007251683A (en) * | 2006-03-16 | 2007-09-27 | Fujitsu Ltd | Optical characteristics measurement method and system |
JP4699924B2 (en) * | 2006-03-16 | 2011-06-15 | 富士通株式会社 | Method and system for measuring optical properties |
JP2009103526A (en) * | 2007-10-22 | 2009-05-14 | Furukawa Electric Co Ltd:The | Optical line failure detection device, optical line failure detection method, and light source device and light receiving device used therefor |
JP2014017451A (en) * | 2012-07-11 | 2014-01-30 | Fuji Xerox Co Ltd | Optical transmission system and surface-emitting semiconductor laser |
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