Frequency quadrupling with improved OSSR and RFSSR for radio over fiber applications

A filterless and Tunable Optical Millimeter Wave Generation via frequency quadrupling with improved Unwanted Optical Sideband Suppression Radio (OSSR) and Radio Frequency Spurious Sideband Suppression Ratio (RFSSR) is demonstrated based on parallel Lithium Niobate Mach-Zehnder Modulator (LN-MZM). The biasing parameters of the MZMs are varied carefully to achieve quadrupling of the input local oscillator without involving optical filters. A simulation experiment has been conducted to generate 60 GHz MM-Wave by quadrupling 15 GHz RF Local Oscillator. The OSSR of 57.2 dB and the RFSSR of 52 dB are achieved.