A novel technique to improve the performance in optical amplifier WDM transmission systems

Summary form only given. We proposed a novel technique of nonlinear suppression using nonlinear suppression lights (NSL), and confirmed the improvement of the system performance in a long-haul optical amplifier system. It is important to load the NSL with proper wavelength and level in order to obtain the best system performance. For example, this technique is applicable to improve system performance for the constructed system. In addition, NSL is useful to adjust the optical power per channel in WDM systems.