“…They offer a much higher number of wavelengths than typically is available through EO combs, together with a wide range of comb spacings (free spectral range (FSR)) including ultra-large FSRs, as well as greatly reduced footprint and complexity. Micro-combs have enabled many fundamental breakthroughs [50] including ultrahigh capacity communications [77][78][79], neural networks [80][81][82], complex quantum state generation [83][84][85][86][87][88][89][90][91][92][93][94][95][96][97] and much more. In particular, microcombs have proven to be very powerful tools for a wide range of RF applications such as optical true time delays [31], transversal lters [34,38], signal processors [29,32], channelizers [37] and others [15, 18, 26-28, 36, 39-41].…”