Abstract
In a large optical network implementing wavelength-division multiplexing (WDM), wavelengths must be reused, requiring switching of a signal from one wavelength to another. Recent work has used the rapid carrier lifetime of a semiconductor optical amplifier (SOA) to shift a signal’s wavelength all-optically.1-3 The mechanism relies on an intense modulated pump signal on one wavelength causing significant inverse modulation of the SOA gain, thereby transferring the modulation to a concurrently input cw probe signal at another wavelength.
© 1994 Optical Society of America
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