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Nonlinear optical phenomena in optical fibers: their limitation and utilities in high-capacity all-optical communications

This paper reports on theoretical and experimental study of linear and nonlinear optical effects of the silica fibers on high-speed and high-capacity lightwave communications. High-speed all-optical fiber switches, all-optical wavelength and signal conversions, optical clock recovery, mode-locked fiber lasers, supercontinuum pulse generation, and all-optical packet signal detection devices, have been experimentally demonstrated by effectively compensating and utilizing the linear and nonlinear optical effects in optical fibers for high-speed TDM and high-density WDM all-optical communication systems. In addition, theoretical analyses have been performed for the optical chromatic dispersion and nonlinear effects affecting such large capacity optical communication systems provides us a clue on determination of the critical channel power and of the maximum FDM channel numbers limited by the four-wave mixing effect for various lengths of dispersion-shifted fibers, and the maximum TDM bit rate and channel power limited by the chromatic dispersion, cross-phase modulation and stimulated Raman scattering effects for various lengths of normal single-mode fibers.