Abstract

All-optical switching devices, which potentially can operate at speeds much higher than those attainable with electronic or optoelectronic devices, may play an important role in future high speed communications systems. Recently we demonstrated switching of 100-fs pulses by a dual core fiber all-optical switch.1 One problem associated with short pulse operation of any all-optical switch triggered by instantaneous intensity is pulse breakup; switching can occur within a pulse, so that low and high intensity portions of the same pulses are directed to different output ports.1,2 Here we report the application of femtosecond square pulses to avoid pulse breakup. As a result we obtain enhanced power transfer and a sharper switching transition.

© 1989 Optical Society of America

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