Pump Laser Module for Co-propagating Raman Amplifier

The inner-grating multimode (iGM) laser, which has a new structure, has been proposed and developed as the pump laser for co-propagating Raman amplification. Among the important characteristics of co-propagating Raman amplification, we have focused on relative intensity noise (RIN) and stimulated Brillouin scattering (SBS). We have effected structural optimization and evaluation, and have devised a driving system.