Dissimilar cores in multicore optical fiber for strain and temperature separation
US10132614B2 · kind B2 · utility
8Cited by
14References
7Claims
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Key dates
| Filing date | Dec 7, 2015 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Dec 7, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B21/042
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical fiber includes multiple optical waveguides configured in the fiber. An interferometric measurement system mitigates or compensates for the errors imposed by differences in a shape sensing optical fiber's response to temperature and strain. A 3-D shape and/or position are calculated from a set of distributed strain measurements acquired for a multi-core optical shape sensing fiber that compensates for these non-linear errors using one or more additional cores in the multicore fiber that react differently to temperature changes than the existing cores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.