Registering measured optical fiber interferometric data with reference optical fiber interferometric data
US10908047B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2020 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Jun 12, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/246
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method are used for an optical fiber having a core multiple, closely-spaced optical gratings written along the core that create a repeated pattern in the core. A memory stores predetermined reference reflection data and measurement reflection data determined for a length of the core detected from interferometric patterns corresponding to scatter reflections received from the core. Data processing circuitry reduces or removes from the measurement reflection data information that corresponds to reflections due to the repeated pattern in the core to produce filtered measurement data. One or more portions of the filtered measurement data is/are correlated with one or more portions of the reference reflection data to produce multiple correlation values. The greatest of the multiple correlation values is determined, and a location along the fiber corresponding to the greatest correlation value is identified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.