Abstract

Polarization-independent optical switches are attractive in fiber optic instrumentation and telecommunication systems because of their compatibility with conventional optical fiber. Several different types of polarization-independent switches have been proposed and demonstrated [1-3]. In general, these switches have had high switching voltages, complex electrode structures, or demanding fabrication tolerances. We report on a new type of polarization-independent switch, using the balanced-bridge switch concept. This switch employs a simple electrode structure, has a low switching voltage, and is inherently polarization insensitive. Using this concept, we have demonstrated polarization-independent switching at optical wavelengths of 830 and 1150 nm.

© 1989 Optical Society of America