Abstract:When a DFRA is implemented over a fiber with low chromatic dispersion around the pumping wavelengths, new waves (pumps) appear due to four-wave mixing (FWM) processes. This phenomenon is highly efficient when the phase mismatch of amplifier pump wavelengths is satisfied, so these new pumps can cause both a loss of flatness on the spectral gain and a reduction of DFRA gain, degrading WDM system performance. This work presents a new design method for a DFRA considering these new pumps in order to obtain a flat-g… Show more
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