Brillouin optical distributed sensing device and method with improved tolerance to sensor failure
US9804001B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2013 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Mar 18, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/242
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Brillouin optical distributed sensing device and method is provided and includes a structure for generating an optical pulsed signal and an optical probe signal. The structure includes a circulation component for directing the optical pulsed signal to a sensing optical fiber, and directing an optical measurement signal with Brillouin scattering information arising from the sensing optical fiber toward a detection apparatus. Also included is an optical routing component for configuring the device to allow generating: (i) according to a first configuration, an optical measurement signal with stimulated Brillouin scattering information resulting from the interaction of the optical pulsed signal, and an optical probe signal propagating in the sensing optical fiber in a direction opposite to the optical pulsed signal, or (ii) according to a second configuration, an optical measurement signal with spontaneous Brillouin scattering information resulting from the propagation of the optical pulsed signal in the sensing optical fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.