EP 1057057 A1 20001206 - OPTICAL DEVICE
Title (en)
OPTICAL DEVICE
Title (de)
OPTISCHE VORRICHTUNG
Title (fr)
DISPOSITIF OPTIQUE
Publication
Application
Priority
- GB 9900529 W 19990219
- GB 9803709 A 19980220
Abstract (en)
[origin: WO9942871A1] An optical device comprises a multicore optical fibre having m circularly symmetric cores where m>1, the multicore optical fibre having a region of steadily narrowing cross-sectional area. This invention also provides an optical coupler comprising a multicore optical fibre having m circularly symmetric cores optically coupled at a narrowed coupling region to another optical fibre having n cores, where m and n are positive integers and m is greater than 1, the multicore optical fibre having regions of steadily varying cross-sectional area linking the narrowed coupling region to non-narrowed regions of the multicore optical fibre.
IPC 1-7
IPC 8 full level
G02B 6/02 (2006.01); G02B 6/255 (2006.01); G02B 6/28 (2006.01); G02B 6/287 (2006.01); G02B 6/293 (2006.01); G02B 6/34 (2006.01)
CPC (source: EP)
G02B 6/02042 (2013.01); G02B 6/03605 (2013.01); G02B 6/03688 (2013.01); G02B 6/2552 (2013.01); G02B 6/2835 (2013.01); G02B 6/29317 (2013.01); G02B 6/29383 (2013.01)
Citation (search report)
See references of WO 9942871A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9942871 A1 19990826; AU 2540099 A 19990906; CA 2320769 A1 19990826; EP 1057057 A1 20001206; GB 9803709 D0 19980415; JP 2002504703 A 20020212
DOCDB simple family (application)
GB 9900529 W 19990219; AU 2540099 A 19990219; CA 2320769 A 19990219; EP 99905105 A 19990219; GB 9803709 A 19980220; JP 2000532751 A 19990219