What is it about?
Photonic chips are the equivalent to electronic microchips, but working with light instead of electrons. They enable us to miniaturize systems that used to take up whole room to tiny fingernail-sized structures. Here we present a ring resonator that traps light with long wavelengths very efficiently, so called mid-infrared light. We achieve this using silicon-germanium as the chip material.
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Why is it important?
Ring resonators are critical components of sensor systems. If we can make mid-infrared sensors more efficient, yet smaller and cheaper, they can be used in a variety of applications, for example breath analysis in health care, monitoring air quality, or defense.
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This page is a summary of: Mid-infrared integrated silicon–germanium ring resonator with high Q-factor, APL Photonics, July 2023, American Institute of Physics,
DOI: 10.1063/5.0149324.
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