Techniques and apparatus for improved spatial resolution for locating anomalies in optical fiber
US11566921B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2021 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Jul 30, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/3109
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods of measuring an anomaly, any induced change in physical parameters such as strain, temperature, and so forth, in an optical fiber. One method may include launching a plurality of probe pulses from a probe source; recording a Brillouin scattering spectrum from a plurality of reflection signals generated in the optical fiber, responsive to the plurality of probe pulses; determining a relative motion between the optical fiber and the anomaly during the recording the Brillouin back-scattering spectrum; and dynamically adjusting the Brillouin back-scattering spectrum according to the relative motion, or performing an adjustment of the Brillouin back-scattering spectrum after acquisition of the Brillouin back-scattering spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.