Modulator bias regimes for analog optical links

Abstract

In this paper, three distinct operating regimes for an analog fiber optic link with Mach-Zehnder modulators (MZM) are described. A third operating regime for an analog fiber optic link has been described that maximizes a linearity figure of merit. This balanced operating point should be considered for sub-octave applications since it can eliminate the need for electronic amplifiers on both sides of the fiber optic link.