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Opt Lett. 2006 Jun 15;31(12):1860-2.

Single-mode low-loss chalcogenide glass waveguides for the mid-infrared.

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  • 1Pacific Northwest National Laboratory, 902 Batelle Boulevard, P.O. Box 999, Richland, Washington 99352, USA.


We demonstrate the design, fabrication, and characterization of single-mode low-loss waveguides for mid-infrared (MIR) wavelengths. Planar waveguide structures were fabricated from multilayer thin films of arsenic-based chalcogenide glasses followed by the creation of channel waveguides by using the photodarkening effect. Propagation losses as low as 0.5 dB/cm were measured for a quantum cascade laser end-fire coupled into the waveguides. This is a first step toward the design and fabrication of integrated optical components for MIR applications.

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