A silicon photonic broken racetrack resonator for large-scale tuning of FSR

We propose and demonstrate experimentally a novel racetrack resonator, in which the perimeter is broken into two sections that are coupled together by forming directional couplers. Simulation and experimental results confirm the performance of the broken racetrack geometry. We demonstrate that the free spectral range of the resonator shrinks from 5.7 to 0.3 nm by testing seven devices with discrete variations in the displacement of the inner segment.

Full abstract in IEEE Xplore DOI: 10.1109/LPT.2016.2515052


Robert Brunner, Stephane Lessard, Ericsson Research; Mehrdad Mirshafiei, David V. Plant; McGill University, Montreal, QC, Canada

Published March 2016, IEEE Photonics Technology Letters (Volume: 28, Issue: 5)

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