Abstract

Wavelength conversion using cross gain- compression in a semiconductor optical amplifier (SOA) has recently been demonstrated at high speeds (>10 Gbits).1"3 For this type of wavelength shifter, relatively large modulated input pump powers (several hundred microwatts) are required for significant amplifier gain compression. These intensities create large carrier density variations in the SOA, leading to chirp in the wavelength-shifted signal. The resulting chirp may limit transmission distances through standard-dispersion fiber.3

© 1994 Optical Society of America

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