Microwave-to-Optical Converter based on Integrated Lithium Niobite Coupled-Resonators

We experimentally demonstrate an efficient classical microwave-to-optical converter using coupled optical microresonators on lithium niobite with Q = 2.7×10
⁶
. We measure full-depth optical modulation with a 7 GHz microwave driving voltage V
_rms
= 70 mV.