Abstract
Semiconductor optical amplifiers (SOAs) have recently attracted considerable interest as gates in high capacity optical switching blocks.1-3 An attractive feature is the possibility to attain both transparent and compact switching blocks with monolithic integration of waveguides and SOAs.1 Parameters of interest for optical gates are the on/off ratio, the switching speed, the insertion loss, and the power consumption. In general there is a trade-off so a large on/off ratio gives longer switching times (>1 ns) and fast switching causes an increase in the power consumption. Here we demonstrate a method that makes it possible to obtain fast switching (2.5 Gb/s), large on/off-ratio (15 dB), and low power consumption (<10 dBmel) at the same time.
© 1993 Optical Society of America
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