JPS5510524A - Monitor optical fiber and faulty position detecting method using said fiber - Google Patents
Monitor optical fiber and faulty position detecting method using said fiberInfo
- Publication number
- JPS5510524A JPS5510524A JP8310478A JP8310478A JPS5510524A JP S5510524 A JPS5510524 A JP S5510524A JP 8310478 A JP8310478 A JP 8310478A JP 8310478 A JP8310478 A JP 8310478A JP S5510524 A JPS5510524 A JP S5510524A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- reflected
- optical pulse
- optical
- optical fiber
- 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
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
PURPOSE: To secure monitoring at all times for the optical fiber by the presence or absence of the optical pulse reflected by providing previously the uneven points or the light reflecting parts due to the half-mirror and the like to the optical fiber with proper distances.
CONSTITUTION: Light reflecting parts 2 are provided to optical fiber 1 with proper distances by the method in which the reflecting material is evaporated to the cross section of the fiber or other methods. As a result, when the optical pulse is transmitted from the terminal of fiber 1, part of the optical pulse propagating within fiber 1 is reflected at part 2. This reflected pulse is measured along the time axis (lateral axis), and thus waveform 5 is observed. In case the fiber is cut off between the No. n and No. (n+1) reflecting parts counted from the measurement end of fiber 1, only n-units of reflected optical pulse is observed. Thus, the cut-off area of the fiber can be detected by counting the number of the reflected optical pulse.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8310478A JPS5510524A (en) | 1978-07-10 | 1978-07-10 | Monitor optical fiber and faulty position detecting method using said fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8310478A JPS5510524A (en) | 1978-07-10 | 1978-07-10 | Monitor optical fiber and faulty position detecting method using said fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5510524A true JPS5510524A (en) | 1980-01-25 |
Family
ID=13792878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8310478A Pending JPS5510524A (en) | 1978-07-10 | 1978-07-10 | Monitor optical fiber and faulty position detecting method using said fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5510524A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5777936A (en) * | 1980-11-01 | 1982-05-15 | Asahi Optical Co Ltd | Safety device for detecting transmission fiber trouble |
JPS59119236A (en) * | 1982-12-24 | 1984-07-10 | Sumitomo Electric Ind Ltd | Detecting method of breaking of fiber for power transmission |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5233371A (en) * | 1975-09-09 | 1977-03-14 | Hitachi Plant Eng & Constr Co Ltd | Test method of compression dehydration of mixed waste and the test dev ice to perform the method |
JPS5510855A (en) * | 1978-07-10 | 1980-01-25 | Hitachi Ltd | Method of manufacturing composite rotor |
-
1978
- 1978-07-10 JP JP8310478A patent/JPS5510524A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5233371A (en) * | 1975-09-09 | 1977-03-14 | Hitachi Plant Eng & Constr Co Ltd | Test method of compression dehydration of mixed waste and the test dev ice to perform the method |
JPS5510855A (en) * | 1978-07-10 | 1980-01-25 | Hitachi Ltd | Method of manufacturing composite rotor |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5777936A (en) * | 1980-11-01 | 1982-05-15 | Asahi Optical Co Ltd | Safety device for detecting transmission fiber trouble |
JPH033174B2 (en) * | 1980-11-01 | 1991-01-17 | Asahi Optical Co Ltd | |
JPS59119236A (en) * | 1982-12-24 | 1984-07-10 | Sumitomo Electric Ind Ltd | Detecting method of breaking of fiber for power transmission |
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