Distributed backscattering
US7995197B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2005 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Sep 1, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/071
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a method for detecting or inferring a physical disturbances on a communications link, in particular by using distributed backscattering. The method includes the steps of: transmitting test signals onto a link; receiving test signals returned from a remote portion of the link; performing a function on the returned test signals; and in dependence on at least one characteristic of the combination signal, inferring the presence of a disturbance. The test signal are returned by a process Rayleigh backscattering along the fibre, so existing fibre installations can be used without requiring a mirror to be specifically introduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.