All optical wavelength conversion schemes for increased input power dynamic range

Schemes for increasing the input power dynamic range of interferometric wavelength converters are presented with experiments at 10 Gb/s showing large improvements, A simple conversion scheme that uses current control of the interferometer improves the dynamic range from similar to 3-similar to 8 dB, A simpler method of inserting an EDFA before the converter results in more than 40 dB of dynamic range while a method of using a SOA for power control gives similar to 28-dB dynamic range.