Modeling ofSOA-based highspeedall-optical wavelength conversion withoptical filter assistance

We investigate thepolarity variation ofhigh-speed wavelength conversion (WC)basedonasemiconductor optical amplifier (SOA)followed byanoptical bandpass filter (OBF). An analytical expression ofthefiltered signal isdeduced toreveal the polarity variation ofWC.Theevolution ofbothinverted WC and non-inverted WC withrespect tothecentral wavelength and bandwidth offilter istheoretically demonstrated withnumerical simulations. z Bo~~~~~~~~~ -Aw2(t) X~