SE444731B - Anordning for bestemning av dempningen hos ljusledarfibrer - Google Patents
Anordning for bestemning av dempningen hos ljusledarfibrerInfo
- Publication number
- SE444731B SE444731B SE7907153A SE7907153A SE444731B SE 444731 B SE444731 B SE 444731B SE 7907153 A SE7907153 A SE 7907153A SE 7907153 A SE7907153 A SE 7907153A SE 444731 B SE444731 B SE 444731B
- Authority
- SE
- Sweden
- Prior art keywords
- pulse
- signal
- ramp
- trigger
- length
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title claims description 9
- 230000001960 triggered effect Effects 0.000 claims description 11
- 238000005070 sampling Methods 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000002123 temporal effect Effects 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims 2
- 238000005259 measurement Methods 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000012935 Averaging Methods 0.000 description 4
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- G01M11/3145—Details of the optoelectronics or data analysis
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Length Measuring Devices By Optical Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2837981A DE2837981C2 (de) | 1978-08-31 | 1978-08-31 | Optisches Zeitbereichs-Reflektometer zur Bestimmung der Dämpfung von Lichtleitfasern |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7907153L SE7907153L (sv) | 1980-03-01 |
| SE444731B true SE444731B (sv) | 1986-04-28 |
Family
ID=6048345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7907153A SE444731B (sv) | 1978-08-31 | 1979-08-28 | Anordning for bestemning av dempningen hos ljusledarfibrer |
Country Status (6)
| Country | Link |
|---|---|
| CH (1) | CH636960A5 (xx) |
| DE (1) | DE2837981C2 (xx) |
| FR (1) | FR2435026A1 (xx) |
| GB (1) | GB2033078B (xx) |
| IT (1) | IT1112188B (xx) |
| SE (1) | SE444731B (xx) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2945055C2 (de) * | 1979-11-08 | 1982-09-02 | Philips Kommunikations Industrie Ag, 8500 Nuernberg | Verfahren und Vorrichtung zum Konstanthalten der in einer Lichtleitfaser geführten Lichtleistung |
| DE3115200A1 (de) * | 1981-04-15 | 1983-02-03 | Philips Kommunikations Industrie AG, 8500 Nürnberg | Verfahren zur messung von impulslaufzeiten, fehlerorten und daempfung auf kabeln und lichtwellenleitern |
| GB2122337B (en) * | 1982-05-18 | 1985-11-13 | Nat Res Dev | Fibre optic sensing device |
| GB2138234B (en) * | 1983-04-14 | 1986-10-08 | Standard Telephones Cables Ltd | Coherent reflectometer |
| SE456190B (sv) * | 1983-10-14 | 1988-09-12 | Ericsson Telefon Ab L M | Forfarande att i ett fiberoptiskt transmissionssystem meta dispersionen hos den transmitterande optiska fibern |
| GB2198524B (en) * | 1986-12-11 | 1990-08-29 | Plessey Co Plc | Improvements relating to optical sensing systems |
| DE4328486A1 (de) * | 1993-08-24 | 1995-03-02 | Siemens Ag | Überwachung optischer Einfaser-Anschlußleitungen bis zu einer passiven Schnittstelle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2620357A1 (de) * | 1976-05-06 | 1977-11-17 | Aeg Telefunken Kabelwerke | Daempfungsmessung in lichtleitern |
-
1978
- 1978-08-31 DE DE2837981A patent/DE2837981C2/de not_active Expired
-
1979
- 1979-02-16 IT IT20298/79A patent/IT1112188B/it active
- 1979-03-14 FR FR7906535A patent/FR2435026A1/fr active Granted
- 1979-04-27 CH CH400179A patent/CH636960A5/de not_active IP Right Cessation
- 1979-06-21 GB GB7921610A patent/GB2033078B/en not_active Expired
- 1979-08-28 SE SE7907153A patent/SE444731B/sv not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2033078B (en) | 1983-05-11 |
| GB2033078A (en) | 1980-05-14 |
| IT1112188B (it) | 1986-01-13 |
| IT7920298A0 (it) | 1979-02-16 |
| FR2435026B1 (xx) | 1984-06-15 |
| DE2837981A1 (de) | 1980-03-06 |
| DE2837981C2 (de) | 1986-01-30 |
| SE7907153L (sv) | 1980-03-01 |
| FR2435026A1 (fr) | 1980-03-28 |
| CH636960A5 (de) | 1983-06-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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