JPS55155225A - Optical pulse tester for long optical fiber - Google Patents
Optical pulse tester for long optical fiberInfo
- Publication number
- JPS55155225A JPS55155225A JP6268979A JP6268979A JPS55155225A JP S55155225 A JPS55155225 A JP S55155225A JP 6268979 A JP6268979 A JP 6268979A JP 6268979 A JP6268979 A JP 6268979A JP S55155225 A JPS55155225 A JP S55155225A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- optical
- pulse
- long
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
- G01M11/3109—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR
- G01M11/3154—Details of the opto-mechanical connection, e.g. connector or repeater
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
PURPOSE:To make possible the detection of troubles in the long optical fiber easily and quickly employing an optical pulse of long wavelength range in which the loss of the fiber can be extremely low using a Q switch Er gas laser. CONSTITUTION:The detector 15 of the optical pulse generator 1 detects the moment at which the switch pulse is generated from the Q switch element 13. The detection output starts the time counter 4 while the laser pulse in the wavelength range of the long optical fiber in which the loss can be extremely low by the Er gas laser 12 is made incident the fiber 5 through the optical coupler 2. The optical detector 3 detects the reflected pulse emitted from the trouble point of the fiber 5 via the coupler 2. The detection signal is applied to the counter 4 to compute the position of trouble in the fiber on the basis of propagation speed of the optical pulse. With such an arrangement, the trouble in the long optical fiber can be detected accurately and easily in the short space of time without split detection or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6268979A JPS55155225A (en) | 1979-05-23 | 1979-05-23 | Optical pulse tester for long optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6268979A JPS55155225A (en) | 1979-05-23 | 1979-05-23 | Optical pulse tester for long optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55155225A true JPS55155225A (en) | 1980-12-03 |
Family
ID=13207496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6268979A Pending JPS55155225A (en) | 1979-05-23 | 1979-05-23 | Optical pulse tester for long optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55155225A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5167181A (en) * | 1974-10-30 | 1976-06-10 | Siemens Ag | Garasusenino tanbukaraketsukankashomadenokyoriosokuteisurutamenohoho oyobi sochi |
-
1979
- 1979-05-23 JP JP6268979A patent/JPS55155225A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5167181A (en) * | 1974-10-30 | 1976-06-10 | Siemens Ag | Garasusenino tanbukaraketsukankashomadenokyoriosokuteisurutamenohoho oyobi sochi |
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