Abstract

The spectral responses of series-coupled racetrack resonators exhibiting the Vernier effect have many attractive features as compared to the spectral responses of identical series-coupled racetrack resonators, such as free spectral range (FSR) extension and enhanced wavelength tunability. Here we present experimental results of a thermally tunable quadruple series-coupled silicon racetrack resonator exhibiting the Vernier effect. We thermally tune two of the four racetrack resonators to enable discrete switching of the major peak by 15.54 nm. Also, our device has an interstitial peak suppression of 35.4 dB, a 3 dB bandwidth of 0.45 nm, and an extended FSR of 37.66 nm.

© 2013 Optical Society of America

Experimental performance of DWDM quadruple Vernier racetrack resonators

Robert Boeck, Jonas Flueckiger, Lukas Chrostowski, and Nicolas A. F. Jaeger
Opt. Express 21(7) 9103-9112 (2013)

High performance Vernier racetrack resonators

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