A scheme for generating high-frequency millimeter wave based on external modulation and four-wave mixing

In this work, a novel scheme to generate 108-tupling frequency millimeter-wave (mm-wave) based on the external modulation of dual-drive Mach-Zehnder Modulator (MZM) and highly nonlinear fiber (HNLF) is proposed, which is verified by simulation. In this system, the ±18 th order sidebands generated by six MZMs in parallel are used as the optical carriers and then injected to the HNLF. Due to the four-wave mixing (FWM) of HNLF, a new optical frequency component, which is up to 54-order can be obtained. The variation of Optical Side-band Suppression Ratio (OSSR) and the Radio Frequency Spurious Suppression Ratio (RFSSR) are analyzed by simulation. The simulation results show that our system achieves optimal performance at HNLF of 2km. At this time, a high-quality mm-wave can be acquired, with OSSR of 26.12dB and RFSSR of 44. 74dB. The analysis shows that this scheme has a high FMF, which can effectively reduce the frequency of local oscillator signal.