High-rate fiber-optical distributed acoustic sensing
US10935418B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 2019 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | Aug 2, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/3539
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of high rate fiber optical distributed acoustic sensing includes injecting a first coherent light pattern comprising first light into an optical cable, the optical cable having at least a first reflector pair and a second reflector pair arranged at different positions along the optical cable; injecting a second coherent light pattern comprising second light into the optical cable while first backscatter light of the first light pattern is propagating in the optical cable; detecting first reflected light originating from reflection of the first light pattern from the first reflector pair and/or the second reflector pair; and, at a different interval in time: detecting second reflected light originating from reflection of the second light pattern from the first reflector pair and/or the second reflector pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.