GB8918862D0 - Line monitoring system - Google Patents
Line monitoring systemInfo
- Publication number
- GB8918862D0 GB8918862D0 GB898918862A GB8918862A GB8918862D0 GB 8918862 D0 GB8918862 D0 GB 8918862D0 GB 898918862 A GB898918862 A GB 898918862A GB 8918862 A GB8918862 A GB 8918862A GB 8918862 D0 GB8918862 D0 GB 8918862D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- monitoring system
- line monitoring
- line
- monitoring
- 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
- G01M11/3118—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR using coded light-pulse sequences
-
- 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
- G01M11/39—Testing of optical devices, constituted by fibre optics or optical waveguides in which light is projected from both sides of the fiber or waveguide end-face
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optical Communication System (AREA)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB898918862A GB8918862D0 (en) | 1989-08-18 | 1989-08-18 | Line monitoring system |
JP51180590A JPH05500107A (en) | 1989-08-18 | 1990-08-09 | optical communication system |
PCT/GB1990/001250 WO1991002959A1 (en) | 1989-08-18 | 1990-08-09 | Optical communications system |
AU61826/90A AU637629B2 (en) | 1989-08-18 | 1990-08-09 | Optical communications system |
EP19900912495 EP0486583A1 (en) | 1989-08-18 | 1990-08-09 | Optical communications system |
CA 2064789 CA2064789A1 (en) | 1989-08-18 | 1990-08-09 | Optical communications system |
NZ23486090A NZ234860A (en) | 1989-08-18 | 1990-08-10 | Monitoring optical communications system; detecting backscatter from test pulse sequence |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB898918862A GB8918862D0 (en) | 1989-08-18 | 1989-08-18 | Line monitoring system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB8918862D0 true GB8918862D0 (en) | 1989-09-27 |
Family
ID=10661821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB898918862A Pending GB8918862D0 (en) | 1989-08-18 | 1989-08-18 | Line monitoring system |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0486583A1 (en) |
JP (1) | JPH05500107A (en) |
AU (1) | AU637629B2 (en) |
CA (1) | CA2064789A1 (en) |
GB (1) | GB8918862D0 (en) |
NZ (1) | NZ234860A (en) |
WO (1) | WO1991002959A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991012509A1 (en) * | 1990-02-15 | 1991-08-22 | British Telecommunications Public Limited Company | Optical test apparatus |
DE69333369T2 (en) * | 1992-05-01 | 2004-10-07 | Sumitomo Electric Industries | Optical line identification method |
GB9524485D0 (en) * | 1995-11-30 | 1996-01-31 | Bicc Plc | Device for interrogating an optical fibre network |
GB2401738A (en) * | 2003-05-16 | 2004-11-17 | Radiodetection Ltd | Optical fibre sensor |
US9118412B2 (en) * | 2011-09-27 | 2015-08-25 | Broadcom Corporation | System and method for performing in-band reflection analysis in a passive optical network |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3340428A1 (en) * | 1983-11-09 | 1985-05-23 | Wandel & Goltermann Gmbh & Co, 7412 Eningen | Method and device for monitoring an optical data transmission system |
GB8906937D0 (en) * | 1989-03-28 | 1989-05-10 | Plessey Telecomm | Testing optical fibre links |
GB9027716D0 (en) * | 1990-12-20 | 1991-02-13 | British Telecomm | Optical communications system |
-
1989
- 1989-08-18 GB GB898918862A patent/GB8918862D0/en active Pending
-
1990
- 1990-08-09 EP EP19900912495 patent/EP0486583A1/en not_active Withdrawn
- 1990-08-09 WO PCT/GB1990/001250 patent/WO1991002959A1/en not_active Application Discontinuation
- 1990-08-09 JP JP51180590A patent/JPH05500107A/en active Pending
- 1990-08-09 CA CA 2064789 patent/CA2064789A1/en not_active Abandoned
- 1990-08-09 AU AU61826/90A patent/AU637629B2/en not_active Ceased
- 1990-08-10 NZ NZ23486090A patent/NZ234860A/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0486583A1 (en) | 1992-05-27 |
JPH05500107A (en) | 1993-01-14 |
CA2064789A1 (en) | 1991-02-19 |
NZ234860A (en) | 1992-10-28 |
AU6182690A (en) | 1991-04-03 |
AU637629B2 (en) | 1993-06-03 |
WO1991002959A1 (en) | 1991-03-07 |
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