Mid-infrared racetrack resonators are demonstrated working at 8μm wavelength. The devices are based on a graded SiGe platform providing low propagation loss on a large wavelength range in the mid-IR. Different resonators designs have been fabricated, with varying gap distances in the directional coupler. Q factors of more than 3000 have been experimentally demonstrated. These results pave the way towards compact mid-IR sensors or efficient active devices.
Ge-rich graded-index Si1-xGex racetrack resonators for long-wave infrared photonics
Frigerio J.;Ballabio A.;Isella G.;
2019-01-01
Abstract
Mid-infrared racetrack resonators are demonstrated working at 8μm wavelength. The devices are based on a graded SiGe platform providing low propagation loss on a large wavelength range in the mid-IR. Different resonators designs have been fabricated, with varying gap distances in the directional coupler. Q factors of more than 3000 have been experimentally demonstrated. These results pave the way towards compact mid-IR sensors or efficient active devices.File in questo prodotto:
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