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Tunable Microwave Phase Shifter with Low RF-Power Variation Based on High-Q Epitaxial AlN Ring Resonator

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Abstract

A novel optically tunable microwave phase shifter is demonstrated based on high-Q (intrinsic quality factor ~ 3.3×106) epitaxial AlN microring, exhibiting a tuning range of 0–332° and RF-power variation less than 3 dB for a 19 GHz signal.

© 2016 Optical Society of America

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