Mach-Zehnder wavelength converter with integrated preamplifiers

Summary form only given. In summary, a Mach-Zehnder WDM fibre network wavelength converter with variable input and output wavelengths has been presented. The integrated signal and probe pre-amplifiers potentially reduce input power requirements. Around 25-dB extinction ratio has been demonstrated, as well as operation at 2.5 Gbit/s.