JPS6441116A - Optically combined overhead ground wire - Google Patents
Optically combined overhead ground wireInfo
- Publication number
- JPS6441116A JPS6441116A JP62195346A JP19534687A JPS6441116A JP S6441116 A JPS6441116 A JP S6441116A JP 62195346 A JP62195346 A JP 62195346A JP 19534687 A JP19534687 A JP 19534687A JP S6441116 A JPS6441116 A JP S6441116A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- thunderbolt
- optical fiber
- fiber core
- memory alloy
- 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
- Communication Cables (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
PURPOSE:To facilitate the detection of the location on an aerial transmission line where a thunderbolt hits by attaching a shape memory alloy wire which bends an optical fiber core wire when heated to the optical fiber core wire. CONSTITUTION:A shape memory alloy wire 4 having a memory of a straight line shape is spirally wound at normal temperatures on an optical fiber core wire 3 accommodated in a multiplicity of spiral grooves 2 formed on the circumference of a spacer 1. The transformation temperature of the shape memory alloy 4 is set higher than a maximum temperature when a thunderbolt current is not flowing through an overhead ground wire 9 and lower than a temperature when the wire 9 is heated by the thunderbolt current, at about 100 deg.C for example. When a thunderbolt hits a combined optical overhead ground wire and the thunderbolt current flows through and heats the wire 9, the shape memory alloy wire 4 returns to the straight line shape and bends the optical fiber core wire 3. As a result, transmission loss in that part on the wire 3 increases to facilitate the detection of the location where the thunderbolt hits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62195346A JPS6441116A (en) | 1987-08-06 | 1987-08-06 | Optically combined overhead ground wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62195346A JPS6441116A (en) | 1987-08-06 | 1987-08-06 | Optically combined overhead ground wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6441116A true JPS6441116A (en) | 1989-02-13 |
Family
ID=16339642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62195346A Pending JPS6441116A (en) | 1987-08-06 | 1987-08-06 | Optically combined overhead ground wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6441116A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0501323A2 (en) * | 1991-02-26 | 1992-09-02 | Felten & Guilleaume Energietechnik AG | Sensor fiber optic cable for locating heat sources |
-
1987
- 1987-08-06 JP JP62195346A patent/JPS6441116A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0501323A2 (en) * | 1991-02-26 | 1992-09-02 | Felten & Guilleaume Energietechnik AG | Sensor fiber optic cable for locating heat sources |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR860000580B1 (en) | Method of heating thermal shrinkage tube and apparatus therefor | |
| FI75049B (en) | MIKROBOEJKAENSLIG FIBEROPTISK KABEL. | |
| EP0219096A3 (en) | Optical fiber star coupler and method of manufacturing the same | |
| ATE175920T1 (en) | HEATED INJECTION NOZZLE WITH PROTECTIVE TUBES | |
| JPS6441116A (en) | Optically combined overhead ground wire | |
| AU4182496A (en) | Fused strain gauge and monitored pipe system | |
| JPS566202A (en) | Multicore fiber and its production | |
| JPS57115512A (en) | Manufacture for optical fiber connector | |
| ES8500789A1 (en) | Heating apparatus for brazing. | |
| JPS537340A (en) | Optical fiber cable | |
| JPS54157633A (en) | Optical fiber connector | |
| JPS5420440A (en) | Single ended sheath heater & its manufacturing method | |
| JPS5370835A (en) | Optical fiber connector | |
| JPS56130708A (en) | Structure of connection part of submarine optical fiber cable | |
| JPS5481541A (en) | Sheath heater | |
| JPS57115505A (en) | Manufacture for optical fiber cable | |
| JPS5636607A (en) | Production of metal clad optical transmission body | |
| JPS55100508A (en) | Optical fiber bundle | |
| JPS5381143A (en) | Fixing method of optical fiber end | |
| JPS52149133A (en) | Wide aperture fiber | |
| Tomic | Hysteresis on the Chord-Function Curve as the Indicator of Differentila Refraction | |
| JPH0353206Y2 (en) | ||
| JPS538152A (en) | Optical cable | |
| Hender et al. | E1JUILIBRIUH STUDIES OF HELICAL AXIS STELLARATORS | |
| JPS5636615A (en) | Connecting method of of-optical fiber composite cable and of-cable |