Optical fiber strain sensor system and method
US9435701B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2014 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Apr 9, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/35329
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical fiber strain sensor system and method are provided that use pixels of a three-dimension (3-D) pixel sensor to sense the respective light beams passing out of the ends of a reference fiber and a measurement fiber and for converting the respective light beams into respective electrical signals. Because 3-D camera pixels have photodiodes that are directly connected by switches to integrators within the same die, the need to use separate TIAs and phase detection circuitry in each receive channel is eliminated, which reduces system complexity and overall cost. In addition, omitting the separate TIAs and phase detection circuitry for each channel eliminates the phase uncertainty that can occur when using those components, and thus improves measurement precision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.