This book covers the technology of switching or modulating light in
semiconductor optical waveguides. Currently a key function for
optical communications systems is the conversion of data from an
electrical signal to an optical signal for transmission in very low
loss optical fibres and the converse process of optical to
electrical conversion the O/E/O data conversion. This conversion
between electronic and photonic signals imposes an energy
consumption overhead on optical communication systems. So many
research workers have been attracted to ultrafast all-optical
switching of data in different formats. As a way of introduction to
all-optical switching in semiconductor waveguides the book covers
the electro-optic effect, electroabsorption and electrorefraction;
effects that can be used in semiconductor optical modulation
devices. But the book focuses on all-optical switching using second
and third order optical nonlinearities in AlGaAs optical
waveguides. It covers a variety of device configurations including
integrated nonlinear couplers and Mach-Zehnder interferometers.
Further, it provides design software in suit of Mathematica
notebooks that can be used to explore the device design.
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