Eric J. Zhang, Chu C. Teng, et al.
SPIE DCS 2018
To date, integrated waveguides with the lowest losses have all relied at least in part on amorphous materials. In this work, we demonstrate fully crystalline, single-mode integrated microresonators comprising epitaxially grown Si0.86Ge0.14 waveguide cores with silicon claddings. This platform supports ultrahigh-quality-factor resonances, with Q reaching 1.71 ± 0.06 × 108, corresponding to a loss rate of 0.39 ± 0.02 dB/m. This Q is nearly an order-of-magnitude improvement over that seen in prior integrated Si waveguides. Together with silicon's strong Kerr nonlinearity, our results could unlock important new avenues for microwave photonics, optomechanics, and quantum transduction.
Eric J. Zhang, Chu C. Teng, et al.
SPIE DCS 2018
Yves Martin, Jae Woong Nah, et al.
ECTC 2016
Tymon Barwicz, Bo Peng, et al.
IEEE JSTQE
Yves Martin, Swetha Kamlapurkar, et al.
ECTC 2019