Ultra-flat and broad optical frequency combs generation based on novel dispersion-flattened double-slot microring resonator

An ultra-flat and broad optical frequency comb with 7 dB bandwidth of 1155 nm wavelength is obtained, based on a novel double-slot microring resonator in simulation, which produces flattened dispersion of 0 ~ 3.8 ps/(nm-km) over a 1150 nm wavelength range.