Li, FangxinJackson, Stuart DGrillet, ChristianMagi, EricHudson, DarrenMadden, Steven J.Moghe, YashodhanO’Brien, ChristopherRead, AndrewDuvall, Steven G.Atanackovic, PeterEggleton, Benjamin J.Moss, David J.2016-04-292016-04-291094-4087http://hdl.handle.net/1885/101149We report record low loss silicon-on-sapphire nanowires for applications to mid infrared optics. We achieve propagation losses as low as 0.8dB/cm at λ = 1550nm, ~1.1 to 1.4dB/cm at λ = 2080nm and < 2dB/cm at λ = 5.18 μm.This work was supported by the Australian Research Council (ARC) Centres of Excellence program and the ARC Federation Fellows program.© 2011 Optical Society of AmericaKeywords: Low loss; Low propagation loss; Mid-infrared optics; Midinfrared; Propagation loss; Silicon-on-sapphire; Nanowires; Sapphire; aluminum oxide; nanowire; silicon; article; chemistry; crystallization; equipment design; infrared spectrophotometry; methodology201110.1364/OE.19.0152122016-06-14