An Optical Phase locked loop for low phase noise sub-terahertz signal generation on a silicon nitride photonic platform Ghent University
A traditional Phase Locked Loop (PLL) is an electronic circuit of which the main application is to generate precise frequencies. It is an essential building block in every radio system. E.g. in a conventional FM radio receiver, the channel selection occurs by tuning to the broadcast frequency. In practice this is done by locally generating this frequency, which is done by a PLL. Researchers have demonstrated that such a PLL can also be ...