Experimental analysis of the interaction between modulation instability and stimulated raman scattering in short lengths of optical fibers

摘要

In this work the interaction between modulation instability (MI) and stimulated Raman Scattering (SRS) in conventional short fibers (8m) to supercontinuum generation is reported. Here we used short length optical fibers pumped with a microchip laser emitting a pulsed signal at 1064 nm wavelength and 700ps. Moreover was obtained a detailed analysis of spectral evolution of pulses propagated through the fiber. Hence MI is observed as first nonlinear effect unchaining more of those until reach a 293 nm wide spectrum. A comparative analysis was done between 1060XP and SM28 short section optic fibers showing important SRS gaining differences, achieving on SMF28 fiber a higher gain on anti-Stokes wavelength. On the other side was achieved a higher broadening spectral on 1060XP fiber than the one generated on communications optical.