Abstract
Subcarrier multiplexing is a popular, low-cost method for transmitting digital signals. The QPSK modulation format is commonly used because it is very robust, yet uses bandwidth efficiently.1-2 In some proposed networks wavelength conversion in the distribution system would prove useful, for example in architectures where wavelength-selective routing is desired. In this experiment we demonstrate wavelength conversion of 60 QPSK channels via cross-gain modulation in a semiconductor optical amplifier (SOA).3-4
© 1996 Optical Society of America
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