GB2042165A - Improvements in or relating to methods of and circuit arrangements for measuring the attenuation of optical fibers - Google Patents
Improvements in or relating to methods of and circuit arrangements for measuring the attenuation of optical fibers Download PDFInfo
- Publication number
- GB2042165A GB2042165A GB7941340A GB7941340A GB2042165A GB 2042165 A GB2042165 A GB 2042165A GB 7941340 A GB7941340 A GB 7941340A GB 7941340 A GB7941340 A GB 7941340A GB 2042165 A GB2042165 A GB 2042165A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gate
- fibre
- optical fibre
- gate circuit
- circuit
- 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.)
- Withdrawn
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 22
- 239000000835 fiber Substances 0.000 claims abstract description 27
- 239000006185 dispersion Substances 0.000 claims abstract description 4
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000013208 measuring procedure 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
- G01M11/3163—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR by measuring dispersion
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Optics & Photonics (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2904703A DE2904703C2 (de) | 1979-02-08 | 1979-02-08 | Verfahren zur Dämpfungsmessung an Lichtleitfasern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2042165A true GB2042165A (en) | 1980-09-17 |
Family
ID=6062415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7941340A Withdrawn GB2042165A (en) | 1979-02-08 | 1979-11-30 | Improvements in or relating to methods of and circuit arrangements for measuring the attenuation of optical fibers |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE2904703C2 (it) |
| FR (1) | FR2448715A1 (it) |
| GB (1) | GB2042165A (it) |
| IT (1) | IT1126360B (it) |
| NL (1) | NL8000323A (it) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2520113A1 (fr) * | 1982-01-15 | 1983-07-22 | Lignes Telegraph Telephon | Dispositif de mesure d'attenuation d'une ligne de transmission |
| US4606632A (en) * | 1981-04-15 | 1986-08-19 | Philips Kommunikations Industrie Ag | Method of measuring impulse durations, error locations and attenuation (or absorption) on cables and lightwave conductors |
| WO1987007014A2 (en) * | 1986-05-09 | 1987-11-19 | Jeremy Kenneth Arthur Everard | Greatly enhanced spatial detection of optical backscatter for sensor applications |
| US5331391A (en) * | 1992-06-16 | 1994-07-19 | Bukhshtab Mikhail A | Method of determining the optical loss in reflected radiation in a fibre-optic light guide |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2505045A1 (fr) * | 1981-04-30 | 1982-11-05 | Lignes Telegraph Telephon | Dispositif de localisation d'une cassure d'une fibre optique transmettant deux signaux lumineux de longueurs d'onde differentes |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3782824A (en) * | 1972-06-01 | 1974-01-01 | Sperry Rand Corp | Apparatus and method for measuring extinction coefficient of an atmospheric scattering medium |
| DE2620357A1 (de) * | 1976-05-06 | 1977-11-17 | Aeg Telefunken Kabelwerke | Daempfungsmessung in lichtleitern |
| GB1538316A (en) * | 1976-07-13 | 1979-01-17 | Standard Telephones Cables Ltd | Optical fibre test equipment and method |
| GB1560124A (en) * | 1977-11-03 | 1980-01-30 | Standard Telephones Cables Ltd | Optical fibre cable testing |
-
1979
- 1979-02-08 DE DE2904703A patent/DE2904703C2/de not_active Expired
- 1979-11-20 IT IT27456/79A patent/IT1126360B/it active
- 1979-11-30 GB GB7941340A patent/GB2042165A/en not_active Withdrawn
- 1979-12-26 FR FR7931694A patent/FR2448715A1/fr active Granted
-
1980
- 1980-01-18 NL NL8000323A patent/NL8000323A/nl not_active Application Discontinuation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4606632A (en) * | 1981-04-15 | 1986-08-19 | Philips Kommunikations Industrie Ag | Method of measuring impulse durations, error locations and attenuation (or absorption) on cables and lightwave conductors |
| FR2520113A1 (fr) * | 1982-01-15 | 1983-07-22 | Lignes Telegraph Telephon | Dispositif de mesure d'attenuation d'une ligne de transmission |
| WO1987007014A2 (en) * | 1986-05-09 | 1987-11-19 | Jeremy Kenneth Arthur Everard | Greatly enhanced spatial detection of optical backscatter for sensor applications |
| WO1987007014A3 (en) * | 1986-05-09 | 1987-12-03 | Jeremy Kenneth Arthur Everard | Greatly enhanced spatial detection of optical backscatter for sensor applications |
| US5331391A (en) * | 1992-06-16 | 1994-07-19 | Bukhshtab Mikhail A | Method of determining the optical loss in reflected radiation in a fibre-optic light guide |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2904703C2 (de) | 1985-03-28 |
| FR2448715B1 (it) | 1984-10-19 |
| IT7927456A0 (it) | 1979-11-20 |
| NL8000323A (nl) | 1980-08-12 |
| FR2448715A1 (fr) | 1980-09-05 |
| IT1126360B (it) | 1986-05-21 |
| DE2904703A1 (de) | 1980-08-28 |
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| Menaglia et al. | Backscattering observation of radiation damage in optical fibers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |