Calculation of redundant bend in multi-core fiber for safety
US10962351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2017 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Dec 11, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02042
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fiber includes M primary cores and N redundant cores, where M an integer is greater than two and N is an integer greater than one. Interferometric circuitry detects interferometric pattern data associated with the M primary cores and the N redundant cores when the optical fiber is placed into a sensing position. Data processing circuitry calculates a primary core fiber bend value for the M primary cores and a redundant core fiber bend value for the N redundant cores based on a predetermined geometry of the M primary cores and the N redundant cores in the fiber and detected interferometric pattern data associated with the M primary cores and the N redundant cores. The primary core fiber bend value and the redundant core fiber bend value are compared in a comparison. The detected data for the M primary cores is determined reliable or unreliable based on the comparison. A signal is generated in response to an unreliable determination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.