Patent ID: 9518826
Filing Date: 2016-12-13
CPC Classification: G01C

Claim Text:
1. A fiber-optic interferometric measurement system including: a broad-spectrum light source adapted to emit a source light beam; a beam splitter adapted to receive the source light beam and to form a first split source beam and a second split source beam; first optical transmission means of optical length l a first Sagnac ring interferometer including a first fiber-optic coil and a first individual integrated optical circuit connected on the one hand to the first optical transmission means and on the other hand to the two ends of the first fiber-optic coil, the first fiber-optic coil having a length L a first detector adapted to detect a first interferometric signal formed by the propagation of the first split source beam in the first Sagnac ring interferometer; a second Sagnac ring interferometer comprising a second fiber-optic coil and a second individual integrated optical circuit connected to the second optical transmission means and to the two ends of the second fiber-optic coil, the second fiber-optic coil having a length L a second detector adapted to detect a second interferometric signal formed by the propagation of the second split source beam in the second Sagnac ring interferometer; and a multiple integrated optical circuit integrating on a same substrate the first individual integrated optical circuit and the second individual integrated optical circuit, wherein the difference Δl between the optical length l