Title :
Signal Pulse Distortion Induced by Stimulated Raman Scattering in High Power Double-Clad Fiber Amplifiers
Author :
Melo, Miguel ; Berendt, Martin O. ; Sousa, Joao M.
Author_Institution :
Multiwave Photonics, S.A., Maia, Portugal
Abstract :
In this letter, the evolution of the stimulated Raman scattering effect on pulse amplification for an Yb-doped double-clad fiber amplifier is investigated. It is experimentally demonstrated that the generated Raman-Stokes pulses occur together with the signal pulse, which causes severe distortion of the output signal pulse. The signal and Raman spectral components are discriminated and their temporal evolution dependence on peak power is analyzed.
Keywords :
amplification; optical distortion; optical fibre amplifiers; optical fibre cladding; optical pulse generation; stimulated Raman scattering; ytterbium; Raman spectra; Raman-Stokes pulse generation; high power double-clad fiber amplifiers; output signal pulse; pulse amplification; signal pulse distortion; stimulated Raman scattering; Optical distortion; Optical fiber amplifiers; Optical fiber couplers; Optical pulses; Optical pumping; Stimulated emission; Double-clad optical fiber; Raman scattering; high peak power laser; optical pulse amplifiers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2175213
