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Dual-wavelength demultiplexing InGaAsP/InP photodiode

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Abstract

Most of the work on lightwave systems has concentrated on coupling a single source to a fiber and, hence, transmission of a singlewavelength band. The information capacity of these systems could be increased, however, by combining signals from sources emitting at different wavelengths, i.e., wavelength-division multiplexing.1 This approach, however, will require demultiplexing the different wavelength channels at the receiver. In this talk we describe a new photodiode structure capable of both detecting and demultiplexing two wavelength bands simultaneously.

© 1979 Optical Society of America

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