A serrodyne frequency translator with wide-band and high precision based on paralleled PM and DP-MZM

Abstract

A wide-band microwave frequency shifter with high precision has been proposed and constructed based on paralleled PM and DP-MZM. PM is used to control the optical carrier phase that is driven by a sawtooth wave with a center frequency, while DP-MZM is used to generate a single-sideband suppressed carrier modulation. Results show that the frequency shift of kHz~GHz can be realized with the microwave carrier suppression of better than 50dB.