JPS6457139A - Apparatus for monitoring state of optical fiber - Google Patents
Apparatus for monitoring state of optical fiberInfo
- Publication number
- JPS6457139A JPS6457139A JP62213465A JP21346587A JPS6457139A JP S6457139 A JPS6457139 A JP S6457139A JP 62213465 A JP62213465 A JP 62213465A JP 21346587 A JP21346587 A JP 21346587A JP S6457139 A JPS6457139 A JP S6457139A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- thermocouple
- optical fiber
- temperature
- metal tube
- 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)
- Light Guides In General And Applications Therefor (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Laser Surgery Devices (AREA)
Abstract
PURPOSE:To make it possible to monitor the state highly reliably by a simple method, by inserting optical fiber into, e.g., a thin metal tube along the approximately entire length, and measuring the temperature of an arbitrary point of the metal tube. CONSTITUTION:Laser light 2, which is emitted from a laser oscillator 1, is inputted into an optical fiber 5, which is housed in an optical cable 4. The fiber 5 is enclosed in a thin metal tube 9 along the approximately entire length. A thermocouple 14 is attached to a part of the outer surface part of the tube 9. The outputs is sent to a control part 16, which is accommodated in the oscillator 1 through an amplifier 15. When deterioration is yielded at a part of the fiber 5, scattered light from the fiber 5 is rapidly increased, and the temperature at this part is also increased rapidly. The scattered light and the temperature are also rapidly increased at the part, where the thermocouple is attached. Namely, even if the deterioration is local, the entire fiber 5 is affected. Therefore, the output of the thermocouple 14 is rapidly changed. The control part 16, which has received the rapid output change, stops the laser oscillation immediately and issues an alarm as required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62213465A JPS6457139A (en) | 1987-08-27 | 1987-08-27 | Apparatus for monitoring state of optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62213465A JPS6457139A (en) | 1987-08-27 | 1987-08-27 | Apparatus for monitoring state of optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6457139A true JPS6457139A (en) | 1989-03-03 |
Family
ID=16639655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62213465A Pending JPS6457139A (en) | 1987-08-27 | 1987-08-27 | Apparatus for monitoring state of optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6457139A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0416803A (en) * | 1990-05-10 | 1992-01-21 | Agency Of Ind Science & Technol | Device for leading and converging light energy into high-pressure gas atmosphere |
| JP2003517616A (en) * | 1999-12-15 | 2003-05-27 | ペルマノヴァ・レーザーシステム・エービー | Method and apparatus for measuring optical power loss in fiber optic contact means |
-
1987
- 1987-08-27 JP JP62213465A patent/JPS6457139A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0416803A (en) * | 1990-05-10 | 1992-01-21 | Agency Of Ind Science & Technol | Device for leading and converging light energy into high-pressure gas atmosphere |
| JP2003517616A (en) * | 1999-12-15 | 2003-05-27 | ペルマノヴァ・レーザーシステム・エービー | Method and apparatus for measuring optical power loss in fiber optic contact means |
| JP4975927B2 (en) * | 1999-12-15 | 2012-07-11 | オプトスカンド エービー | Method and apparatus for measuring optical power loss in fiber optic contact means |
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