
“Light-Mediated Cascaded Locking of Multiple Nano-Optomechanical Oscillators,” [PRL, 118, 063605, 2017]
Coupling with lensed fibers to cascaded optomechanical resonators on a chip. Devices are raised above the rest of the chip on a mesa to allow fiber access. Waveguides end with inverted tapers for efficient mode size matching to the lensed fibers.