Fully distributed amplification based on random distributed feedback fiber laser

A novel distributed Raman amplification based on Random Distributed feedback fiber laser (RDFB-FL) is proposed for the first time. The experimental results confirmed its unique ultra-low intensity noise performance for the proposed distributed amplification. We also provided a new fully distributed measurement method for optical signal-to-noise (OSNR) based on stimulated Brillouin scattering for the first time.