Loss prevention structures for optical modulation applications

摘要

An optical device includes a grounded base and an optical modulator chip having a top surface, a back surface and side surfaces. The optical modulator chip includes a first ground electrode, a signal electrode and a second ground electrode located over the top surface of the optical modulator chip. A resistive paint is on the back surface of the optical modulator chip to reduce losses due to extraneous modes or bias instabilities.