Low propagation loss silicon-on-sapphire nanowires for the mid-IR

摘要

We report low loss silicon-on-sapphire nanowires for applications to mid infrared optics. We achieve propagation losses of < 1dB/cm at λ=1550nm and < 2dB/cm at λ = 2.08 μm and λ = 5.18 μm, the latter representing a factor of 2 reduction in loss over the best previous results.