OPTIMISED PERFORMANCE ANALYSIS OF A WAVELENGTH TUNEABLE 42.7 GB/S EAM BASED RZ TRANSMITTER OVER 1500 KM OF SMF

摘要

The transmission performance of a wavelength tuneable RZ transmitter, consisting of an Electro-Absorption Modulator (EAM) and a tuneable laser, is analysed in a simulated 42.7 Gb/s system, using the Virtual Photonics Incorporated software package. We demonstrate that, to ensure optimum and consistent transmission performance over the C-band wavelength range, the RF drive and bias conditions of the EAM must be varied at each wavelength. The sign and magnitude of the pulse chirp is therefore tailored to suit the dispersion map of the transmission link. Results achieved show that by optimising the drive and DC bias applied to the EAM, consistent transmission performance (1500 km) can be achieved over a wide wavelength range.