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Design and Applications of AWG and PLC

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Design aspects of AWGs and their fundamental properties will be described in detail. Channel numbers of AWGs have been dramatically increased up to 400ch in single wafer. In the multi-chip configuration (tandem AWGs), 1080 ch has been achieved with 25 GHz channel spacing. For telecom applications, not only crosstalk characteristics but also dispersion of AWG is equally important. Origin of dispersion and its relation to the waveguide geometry will be explained. Although throughput of the transport can be increased to tera-bit level by the WDM technology, signal processing in the electrical layer becomes a serious problem due to its speed limit. Optical functional devices, therefore, are important for solving these issues. Various kinds of optical signal processing devices have been developed; they are, dispersion slope equalizers, PMD equalizers, temporal pulse shapers and optical label recognition circuits.

© 2002 Optical Society of America

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