Abstract

A piezoelectrically actuated four-port Mach–Zehnder switch with 30-μs switching time and 0.25-dB insertion loss is demonstrated at a wavelength of 1.3 μm. The worst-case cross talk is below −21 dB for an arbitrary input polarization. The process of fabricating the switch from commercial fiber couplers with length matching of the interferometer arms is described.

© 1994 Optical Society of America

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