Wavelength-division-multiplexing channel energy self-equalization in a soliton transmission line by guiding filters

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Abstract
Negative feedback provided by frequency-guiding filters locks the energies of individual soliton channels to values that do not change with distance, even in the face of considerable variation in amplifier gain among the different channels. The equilibrium values of the energies are further largely independent of input levels and tend to vary only in proportion to the fiber's dispersion. This regulation is important for long-distance transmission and for networking applications.