WAVELENGTH CONVERSION BASED ON XPM IN A SINGLE MODE FIBER AND A MACH-ZEHNDER INTERFEROMETER

A wavelength converter based on cross-phase modulation in a single mode fiber followed by a Mach-Zehnder interferometer is analyzed using conventional fiber as well as dispersion shifted fiber (DSF). The results show that all-optical wavelength conversion is possible without significant reduction in conversion efficiency over a wavelength separation of approximately 10 nm between the input pump signal and the probe signal. For 10 Gb/s intensity modulated signal, output converted power is found to be –6.5 dBm for 10 dBm input for pump and probe and conversion is possible over 10 nm of wavelength separation. 1