Abstract:
Through their small modal volumes and ultra-high finesse, optical microresonators are capable of exhibiting rich nonlinear behaviour, driven by pump powers in the milliwatt range. Microresonators with Kerr type non-linearities have been the focus of much research, resulting in the demonstration of chip-scale coherent optical frequency combs, underpinned by four-wave-mixing. Here, we consider a four-wave-mixing process in microresonators which generates widely-separated parametric sidebands, symmetrically spaced around the pump.
