Low-coherence interferometry optical sensor using a single wedge polarization readout interferometer
US7259862B2 · kind B2 · utility
55Cited by
3References
39Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2004 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Sep 29, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2009/0292
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides a method and a system for measuring a physical quantity by means of a tandem interferometer optical sensor system based on low-coherence interferometry. The system comprises a light system, a sensing interferometer and a polarization readout interferometer. The invention provides a polarization interferometer comprising a single birefringent wedge. The invention also provides for a dispersion-compensated optical sensor system. The invention also provides an interferometer sensitive to temperature that comprises a trajectory in a LiB3O5 crystal with an x-cut orientation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.