| Popis: |
The repeaterless transmission distance of a 1.55 micrometers external modulation system using an erbium-doped fiber power amplifier is generally believed to be limited by stimulated- Brillouin-scattering (SBS). In this paper, by using both analytical and numerical methods, we find that even when the SBS threshold can be increased well beyond approximately 24 mW, the maximum repeaterless transmission distance will still be limited by self-phase-modulation-induced. Our analysis is based on the nonlinear amplitude envelope equation in a lossy, dispersive and nonlinear single-mode- fiber link at 1.5 micrometers , and our numerical approach uses split-step Fourier method. |
