Madden, SteveJin, ZheDebbarma, SukhantaBulla, DouglasLuther-Davies, Barry2015-12-08August 289780977565771http://hdl.handle.net/1885/31596Many 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: Coupling efficiency; Nanowire waveguides; Sub-micron thin films; Taper shape; Taper waveguide; Tapered waveguide; Nanowires; Optics; Quantum electronics; Single mode fibers; Waveguides201110.1109/IQEC-CLEO.2011.61939102016-02-24