Single laser dual optical frequency comb generation

Abstract

In this paper we present a simple scheme of dual frequency comb generation, based on a large-signal electrical modulation of a single high-speed semiconductor laser, applicable for symmetric spectroscopic system architectures. Our simulation results, based on a detailed numerical model including parasitic and noise effects, are confirmed through an experiment, reporting almost 40 GHz wide dual optical frequency comb, with 160 beat notes of 10 MHz spacing.