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Unformatted text preview: component losses and, in many cases, can be used to amplify signals at multiple wavelengths. Understanding lters and optical ampliers is essential to understand-ing the operation of lasers, which comes next. Semiconductor lasers are the main transmitters used in optical communication systems. Then we discuss photodetec-tors, which convert the optical signal back into the electrical domain. This is followed by optical switches, which play an important role as optical networks become more agile. Finally, we cover wavelength converters, which are used to convert signals from one wavelength to another, at the edges of the optical network, as well as inside the network. 113...
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- Spring '09