Effects of pump pulse temporal structure on long-pulse multi-order stimulated Raman scattering in optical fiber

Extreme statistics in Raman fiber amplifiers: From analytical description to experiments

“…2(b). Let us stress that for the range of power / fiber length considered here, it is not necessary to take into account the cascading of the Raman process: such a spontaneous cascading will ultimately lead to a depletion of the central part of the signal wave [7,14,36,37].In these conditions, we can express the longitudinal evolution of the gain G(z) that we define as the ratio of the peak power of the amplified signal and the initial average power (note that with such a definition, our gain differs from the ratio of the initial and output average powers).…”

Implications of Raman scattering and phase noise on multiple four-wave mixing processes in an optical fiber

“…The former study ignores the growth of the Raman pulse from noise through spontaneous Raman generation, whereas the latter includes this physical feature. The evolution of the Stokes pulse energy statistics with pump power has been explored experimentally [13] and analytically [14], and this work has later been extended to investigate the strong dependence of the Stokes pulse growth and saturation levels with pump power on the detailed temporal irregularities in the structure of the pump pulse [15,16].…”