Ultrabroadband Integrated Triply Resonant Electro-Optic Frequency Comb in Lithium Tantalate

We demonstrated an integrated electro-optic frequency comb generator with 450nm span and 29.6GHz spacing, entirely covering optical telecom E-, S-, C-, L-, and U-bands, via monolithic co-integration of microwave and photonics resonators on thin-film lithium tantalate.