In order to generate flat Optical Frequency Comb（OFC）with equal frequency spaces

a novel scheme for the generation of super-flat dual optical frequency combs is demonstrated on the basis of the intensity modulation property of single MQW-based electro-Absorption Modulator（EAM）.In this scheme

the reversed bias voltage and the radio frequency-driven signal amplitude of the MQW EAM are precisely controlled by placing a rectangular optical filter before the EAM and a dual optical frequency comb with a flatness of 0.01 dB is obtained after filtering out the center line of the spectrum.The scheme is simulated with the software Optisystem7.0.In this simulation

dual optical frequency combs symmetrically at the sides of the centerline of the spectrum both with bandwidth of 300 GHz

15spectral lines

interline spacing of 20 GHz and flatness of 0.01 dB can be generated by all laser light sources with different linewidths（100kHz

10 MHz and 20 MHz）.