Title :
Coupling to high-index waveguides via tapered microstructured optical fibre
Author :
Moss, D.J. ; Miao, Y. ; Ta´eed, V. ; Mägi, E.C. ; Eggleton, B.J.
Author_Institution :
Centre for Ultrahigh-bandwidth Devices for Opt. Syst., Univ. of Sydney, Sch. of Phys., NSW, Australia
Abstract :
A novel method of coupling to high-index, small mode-field diameter, waveguides using free-standing tapered ´grapefruit´ microstructured optical fibre pigtails with mode fields down to 1 μm is presented. 0.15 dB mode mismatch loss with chalcogenide rib waveguides is demonstrated, a reduction of more than 5 from high NA fibre, and it is shown that they can be used to butt-couple to silicon nanowires.
Keywords :
optical fibre couplers; optical waveguides; rib waveguides; 0.15 dB; 1 micron; butt-coupling; chalcogenide rib waveguides; high-index waveguides; microstructured optical fibre pigtails; mode mismatch loss; silicon nanowires; small mode field diameter waveguides; tapered microstructured optical fibre; waveguide coupling;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20051819
