In-line fiber evanescent field electrooptic modulators

Electrooptic modulators that consist of an optical fiber waveguide coupled to an electrooptic waveguide are reviewed. Desirable attributes of these de vices are that the optical fiber is uninterrupted and the interaction with the electrooptic region occurs only where the optical properties are modula ted. In this paper we review in-line fiber evanescent field modulators that we have implemented with electrooptic polymers and compound semiconductor quantum wells. We show that the beam propagation method can accurately simu late the behavior measured in these devices.