Silicon Photonics enabled on-chip Optical Readout of piezoMEMS Resonators

In this paper, we present the first demonstration of a promising technology that enables integration of a PiezoMEMS device and on-chip optical read-out. We demonstrate sensor integration by bonding a PZT-based microbeam on a silicon photonics-based resonance interrogator. We report on-chip measurement of three resonance modes of PiezoMEMS beam. We find excellent agreement between on-chip photonics and conventional LDV measurement. We also demonstrate measurement in a vacuum with one-order improvement in the quality factor of the fundamental resonance mode.