EP 4367538 A1 20240515 - COUPLING DEVICE FOR COUPLING HOLLOW-CORE OPTICAL FIBRES COMPRISING A COUPLING ELEMENT
Title (en)
COUPLING DEVICE FOR COUPLING HOLLOW-CORE OPTICAL FIBRES COMPRISING A COUPLING ELEMENT
Title (de)
KOPPLUNGSVORRICHTUNG ZUR KOPPLUNG VON HOHLKERN-LICHTLEITFASERN MIT EINEM KOPPLUNGSELEMENT
Title (fr)
DISPOSITIF DE COUPLAGE POUR FIBRES OPTIQUES A COEUR CREUX COMPRENANT UN ELEMENT DE COUPLAGE
Publication
Application
Priority
- FR 2107433 A 20210708
- EP 2022068978 W 20220707
Abstract (en)
[origin: WO2023281010A1] The invention relates to a coupling device (D) for coupling optical fibres, comprising: - a first hollow-core optical fibre (FO1) with inhibited coupling comprising a first micro-structured sheath (SCF1) comprising a plurality of confinement tubular first patterns (MCF1), distributed in an annulus and at least partially surrounding a first core (C1) so as to confine at least radiation at a first wavelength λ ορ <i />in the first core, - a second hollow-core optical fibre (FO2) with inhibited coupling comprising a second micro-structured sheath (SCF2) comprising a plurality of confinement tubular second patterns (MCF2), distributed in an annulus and at least partially surrounding a second core (C2) so as to confine the light radiation within the second core, - a coupling element (SCP) arranged between the first and the second core, said coupling element comprising at least a coupling tubular pattern (MCP, MCP1, MCP2, MTa) comprised at least partially within the first micro-structured sheath and/or the second micro-structured sheath and having a wall thickness tcp referred to as the coupling thickness and a material index n cp known as the coupling index, an arrangement of the coupling element, the coupling thickness t cp <i />and the coupling index ncp being contrived in such a way as to create a leakage path for the wavelength λ ορ so as to allow coupling of the radiation guided by the first optical fibre towards the second optical fibre and/or from the second optical fibre towards the first optical fibre.
IPC 8 full level
G02B 6/02 (2006.01); G02B 6/032 (2006.01); G02B 6/28 (2006.01)
CPC (source: EP)
G02B 6/02304 (2013.01); G02B 6/02328 (2013.01); G02B 6/02361 (2013.01); G02B 6/02366 (2013.01); G02B 6/2821 (2013.01); G02B 6/032 (2013.01)
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2023281010 A1 20230112; CN 117813533 A 20240402; EP 4367538 A1 20240515; FR 3125137 A1 20230113
DOCDB simple family (application)
EP 2022068978 W 20220707; CN 202280054673 A 20220707; EP 22737506 A 20220707; FR 2107433 A 20210708