Title :
Low loss coupling to sub-micron thin film deposited rib and nanowire waveguides by vertical tapering
Author :
Madden, S. ; Jin, Z. ; Debbarma, S. ; Bulla, D. ; Luther-Davies, B.
Author_Institution :
Centre for Ultrahigh Bandwidth Devices for Opt. Syst., Australian Nat. Univ., Canberra, ACT, Australia
fDate :
Aug. 28 2011-Sept. 1 2011
Abstract :
Many structures containing lateral taper waveguide in previous papers showed quite high experimental loss. A vertical tapered waveguide of both rib and nanowire waveguides together with SU8 lateral tapered waveguide for mode size conversion to single mode fibre has been designed. Taper shape profile, offset tolerance have been investigated and get overlapping loss of less than 0.1 dB and 97% coupling efficiency.
Keywords :
nanowires; optical couplers; optical design techniques; optical fabrication; optical losses; optical waveguides; rib waveguides; SU8 lateral tapered waveguide; coupling efficiency; efficiency 97 percent; low loss coupling; mode size conversion; nanowire waveguides; offset tolerance; overlapping loss; rib waveguide; submicron thin film; submicron thin film deposition; taper shape profile; vertical tapering; Couplings; Indexes; Optical fibers; Planar waveguides; Semiconductor waveguides;
Conference_Titel :
Quantum Electronics Conference & Lasers and Electro-Optics (CLEO/IQEC/PACIFIC RIM), 2011
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4577-1939-4
DOI :
10.1109/IQEC-CLEO.2011.6193910
