Low loss Ge-on-Si waveguides operating in the 8–14 µm atmospheric transmission window

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Gallacher, K.; Millar, R.W.; Griškevičiūte, U.; Baldassarre, L.; Sorel, M.; Ortolani, M.; Paul, D.J.;
(2018)
  • Publisher: Optical Society of America
  • Related identifiers: doi: 10.1364/OE.26.025667
  • Subject: infrared spectroscopy, silicon photonics, epitaxy

Germanium-on-silicon waveguides were modeled, fabricated and characterized at wavelengths ranging from 7.5 to 11 µm. Measured waveguide losses are below 5 dB/cm for both TE and TM polarization and reach values of ∼ 1 dB/cm for ≥ 10 µm wavelengths for the TE polarization... View more
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