Low propagation loss silicon-on-sapphire waveguides for the mid-infrared
Li, Fangxin; Jackson, Stuart D; Grillet, Christian; Magi, Eric; Hudson, Darren; Madden, Steven J.; Moghe, Yashodhan; O’Brien, Christopher; Read, Andrew; Duvall, Steven G.; Atanackovic, Peter; Eggleton, Benjamin J.; Moss, David J.
We 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.
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