Issue 15, 2019, Issue in Progress

Mid-infrared GaAs/AlGaAs micro-ring resonators characterized via thermal tuning

Abstract

Micro-ring resonators with a decoupling waveguide have been manufactured from GaAs/Al0.2Ga0.8As, accommodating mid-infrared wavelengths, and were characterized via thermal tuning. A Q-factor of 1900, a thermal full width at half maximum of 8 °C, and a thermal free spectral range of 18 °C have been achieved. The low Q-factor indicates comparatively high coupling efficiency from the input waveguide into the decoupling waveguide. The micro-ring resonators shown herein are suitable structures for advanced mid-infrared chem/bio sensing strategies via resonant-cavity enhancement. In addition, they offer high spectral resolution for evanescent field sensing strategies via effective wavelength de-multiplexing waveguide structures.

Graphical abstract: Mid-infrared GaAs/AlGaAs micro-ring resonators characterized via thermal tuning

Article information

Article type
Paper
Submitted
19 Dec 2018
Accepted
05 Mar 2019
First published
14 Mar 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 8594-8599

Mid-infrared GaAs/AlGaAs micro-ring resonators characterized via thermal tuning

J. Haas, P. Artmann and B. Mizaikoff, RSC Adv., 2019, 9, 8594 DOI: 10.1039/C8RA10395J

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