Title :
Large signal model of TDM-pumped Raman fiber amplifier
Author :
M. Karasek;J. Kanka;J. Radil;J. Vojtech
Author_Institution :
Inst. of Radio Eng. & Electron., Acad. of Sci. of the Czech Republic, Prague, Czech Republic
Abstract :
In this letter, we study spectral optical signal-to-noise ratio (OSNR) profile of a wide-band Raman fiber amplifier (RFA)with time-division-multiplexed (TDM) pumping. We derive a comprehensive large-signal numerical model which incorporates time variation effects and the downstream propagation of signals, upstream propagation of pumps, and downstream and upstream propagation of amplified spontaneous emission spectral components. We present results for a four-wavelength-pumped discrete RFA with TDM and continuous-wave pumping. Improvement in OSNR flatness of 0.9 dB due to TDM pumping is demonstrated.
Keywords :
"Stimulated emission","Signal to noise ratio","Time division multiplexing","Optical propagation","Optical fiber amplifiers","Broadband amplifiers","Optical noise","Optical pumping","Semiconductor optical amplifiers","Numerical models"
Journal_Title :
IEEE Photonics Technology Letters
DOI :
10.1109/LPT.2005.851888
