(19)
(11) EP 4 798 994 A1

(12)

(43) Date of publication:
02.09.2026 Bulletin 2026/36

(21) Application number: 24805764.8

(22) Date of filing: 25.10.2024
(51) International Patent Classification (IPC): 
G02B 6/122(2006.01)
 G02B 6/30(2006.01)
(52) Cooperative Patent Classification (CPC):
G02B 6/30; G02B 6/305; G02B 6/1228
(86) International application number:
PCT/EP2024/080336
(87) International publication number:
WO 2025/088190 (01.05.2025 Gazette 2025/18)
(84) Designated Contracting States:
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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 26.10.2023 GB 202316378

(71) Applicant: University College Cork-National University of Ireland Cork
Cork (IE)

(72) Inventor:
  • O'BRIEN, Peter
    Cork (IE)

(74) Representative: Purdylucey Intellectual Property 
23 Ely Place
Dublin 2 D02 N285
Dublin 2 D02 N285 (IE)

   


(54) PHOTONIC INTEGRATED CIRCUIT MICRO-OPTICAL COUPLER FOR CRYOGENIC ENVIRONMENTS