EP 3864374 A2 20210818 - COMPACT OPTICAL-FIBRE SAGNAC INTERFEROMETER
Title (en)
COMPACT OPTICAL-FIBRE SAGNAC INTERFEROMETER
Title (de)
KOMPAKTES FASEROPTISCHES SAGNAC-INTERFEROMETER
Title (fr)
INTERFÉROMÈTRE DE SAGNAC À FIBRE OPTIQUE COMPACT
Publication
Application
Priority
- FR 1859447 A 20181011
- FR 2019052408 W 20191010
Abstract (en)
[origin: WO2020074834A2] The invention relates to a Sagnac interferometer with a looped or straight optical fibre. According to the invention, the interferometer comprises an integrated hybrid optical path (200) having at least a first, electro-optical, substrate (1) and a second, transparent, substrate (2) with a common interface (20), the first substrate (1) comprising a first optical waveguide (11), a second optical waveguide (12), the first optical waveguide (11) and the second optical waveguide (12) being connected to at least one end (61) of the optical fibre coil (6), and an input-output optical waveguide (10) connected to a light source (4) and to a sensing system (5), the second substrate (2) comprising at least one U-shaped optical waveguide (21) and the integrated hybrid optical path (200) comprising a planar waveguide Y-junction (26) with a common branch (160) and two secondary branches (161, 162).
IPC 8 full level
G01C 19/72 (2006.01)
CPC (source: EP US)
G01C 19/721 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020074834 A2 20200416; WO 2020074834 A3 20200604; CN 113167583 A 20210723; CN 113167583 B 20240816; EP 3864374 A2 20210818; FR 3087255 A1 20200417; FR 3087255 B1 20201009; JP 2022504196 A 20220113; JP 7479359 B2 20240508; US 11549812 B2 20230110; US 2022018659 A1 20220120
DOCDB simple family (application)
FR 2019052408 W 20191010; CN 201980081495 A 20191010; EP 19816823 A 20191010; FR 1859447 A 20181011; JP 2021518497 A 20191010; US 201917284316 A 20191010