Our group focuses on the design and development of novel photonic devices of extraordinary functionality by controlling optical, mechanical and electrical property of the device based on nanophotonics, nano-fabrication technology, and material science. Especially with ultra-high-Q micro/ nano-cavities, the key element to manipulate photons and their interaction with matter, our aim is to develop essential photonic devices on a monolithic chip having proper interfaces as a core part of next generation photonic systems such as time & frequency precision, high capacity optical telecommunications, and quantum & photon computations.