The present invention relates generally to a system for optical frequency comb generator (OFCG) setup based on two-cascaded Mach-Zehnder Modulators (MZMs) configuration. Accordingly, the system includes: a) at least one CW laser diode, b) at least one time delayer, c) at least one sinusoidal wave oscillator of period T, and d) at least two Mach-Zehnder Modulators (MZMs); wherein first MZM is driven directly by the sinusoidal wave oscillator with frequency fr, while second MZM is driven by same sinusoidal wave after being delayed at time delay ?, by the time delayer at condition where the time delay ? is at 0 ? 0.5 T.