Methods and apparatus to determine strain on an optical core based on tracked change in phase
US9784569B2 · kind B2 · utility
20Cited by
44References
21Claims
0Family size
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Key dates
| Filing date | Jul 8, 2014 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Dec 21, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02042
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An accurate measurement method and apparatus using an optical fiber are disclosed. A total change in optical length in an optical core in the optical fiber is determined that reflects an accumulation of all of the changes in optical length for multiple segment lengths of the optical core up to a point on the optical fiber. The total change in optical length in the optical core is provided for calculation of an average strain over a length of the optical core based on the detected total change in optical length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.