Mode Partition Noise of Semiconductor Laser Diodes

The mode partition noise of semiconductor laser diodes in high-speed PCM direct modulation systems is reviewed from the standpoint of communication applications. First, the progress in this field is summarized briefly, and an appropriate noise model to predict the transmission performance is explained. Second, the parameters to evaluate the mode partition noisein optical communication systems are explained. Third, methods to measure the noise parameters are de scribed.