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The performance of a pre-amplified cross-phase modulation (XPM) wavelength converter has been theoretically investigated. We showed that the pre-amplifier enhances the input optical power dynamic range by 3 dB. The additional 4-dB improvement of the power penalty in wavelength conversion obtained through BER simulation shows that integrating a pre-amplifier enables the accommodation of a relatively small input optical power. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 36: 131–134, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10697

An analysis of a cross-phase modulation (XPM) wavelength converter integrated with preamplifers for increased input power dynamic range is reported. The performance of the preamplified wavelength converter can be deteriorated by the residual reflectivity of semiconductor optical amplifiers (SOAs) inside the converter. We investigate the trade-off relationship between the internal reflectivity of SOAs and the performance of the XPM wavelength converter with an integrated preamplifier through bit error rate (BER) calculation. The optimal physical and operating parameters of the preamplified XPM wavelength converter are proposed.