Analysis of FWM Penalties in DWDM Systems Based on G.652, G.653, and G.655 Optical Fibers

This paper presents an investigation of the power penalties imposed by four-wave mixing (FWM) on G.652 (Single- Mode Fiber - SMF), G.653 (Dispersion-Shifted Fiber - DSF), and G.655 (Non-Zero Dispersion-Shifted Fiber - NZDSF) compliant fibers, considering the DWDM grids suggested by the ITU-T Recommendations G.692, and G.694.1, with uniform channel spacing of 100, 50, 25, and 12.5 GHz. The mathematical/numerical model assumes undepleted pumping, and shows very clearly the deleterious effect of FWM on the performance of DWDM systems, measured by the signal-to-noise ratio (SNR). The results make it evident that non-uniform channel spacing is practically mandatory for WDM systems based on DSF fibers.

Authors:

• Paula B. Harboe
• Edilson da Silva
• José R. Souza

Keywords:

• DWDM systems
• Four-Wave Mixing (FWM)
• G.652
• G.653
• G.655 compliant fibers
• Signal-to-noise ratio.

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