The four-wave mixing (FWM) suppression effect of dispersion distributed fibers (DDF's), which have a nonuniform chromatic dispersion along their length, has been investigated experimentally and theoretically. We fabricated two different kinds of DDF by the vapor-phase axial deposition (VAD) method to clarify the FWM suppression effect. Moreover, we investigated experimentally the effect of our fabricated DDF's on the transmission characteristics of 4 10 Gb/s wavelength division multiplexing (WDM) systems. We confirmed that the proposed DDF's can not only suppress FWM but also improve the input power limitation for WDM systems.
Kazuhide Nakajima, Masaharu Ohashi, Kazuyuki Shiraki, Tsuneo Horiguchi, and Yoshiaki Miyajima, "Four-Wave Mixing Suppression Effect of Dispersion Distributed Fibers," J. Lightwave Technol. 17, 1814- (1999)