A new high-power and low-RIN Raman pump laser for improved performance in long-span unrepeated WDM transmission systems

We propose a high-power and low-noise laser for effective first- and higher-order co-pumping in distributed Raman amplifiers. Experiments at 10 Gb/s, also confirmed by simulations, point out RIN-penalty free transmission up to 25 dB of co-propagating ON-OFF Raman gain. © 2005 Optical Society of America.