In this work, we present a photonic integrated platform based on buried InGaAs waveguides with InP cladding that operates over a large mid-infrared (mid-IR) spectral range. Thanks to wet-etch fabrication patterning and Fe doping, low propagation losses below 1.2 dB/cm (0.3 cm(-1) loss coefficient) have been obtained between 4.6 and 11.2 mu m wavelengths (890-1960 cm(-1) wavenumber), in both transverse electric (TE) and transverse magnetic (TM) polarization modes. The possibility of monolithically integrating such waveguides with mid-IR sources offers promising perspectives for developing broadband, homogeneously integrated systems.
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Univ So Calif, Mork Family Dept Chem Engn & Mat Sci, Los Angeles, CA 90089 USAUniv So Calif, Mork Family Dept Chem Engn & Mat Sci, Los Angeles, CA 90089 USA
Maker, Ashley J.
Armani, Andrea M.
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Univ So Calif, Mork Family Dept Chem Engn & Mat Sci, Los Angeles, CA 90089 USAUniv So Calif, Mork Family Dept Chem Engn & Mat Sci, Los Angeles, CA 90089 USA