Wideband Photonic Microwave SSB Up-Converter and IQ Modulator

A wideband photonic microwave single sideband (SSB) up-converter and an in-phasequadrature (IQ) modulator are proposed and experimentally demonstrated. The intermediate frequency (IF) and local oscillator (LO) signals are applied to the submodulators of a dual-parallel MachZehnder modulator (DPMZM) for frequency up-conversion, and the phase of the generated radio frequency signal can be arbitrarily tuned through the working point of the DPMZM. Using a polarization division multiplexing DPMZM, a wideband photonic microwave IQ frequency up-converter can be constructed for SSB up-conversion or IQ modulation. In the experiment, SSB signals with well-suppressed carrier and undesired sideband are generated over a wide frequency coverage of the LO (1640GHz) and IF (28GHz) signals. In the experimental demonstration of IQ modulation, 16- and 64-quadrature amplitude modulation signals with a symbol rate of 100MSyms and a carrier frequency from 10 to 40GHz are successfully generated with low error vector magnitudes.