ZERO DISPERSION SLOPE

In a single-mode optical fiber , the rate of change of dispersion , with respect to wavelength , at the fiber's zero-dispersion wavelength . Note 1: In silica -based optical fibers, the zero-dispersion wavelength occurs at approximately 1.3 m, but this wavelength may be shifted toward the minimum-loss window by the addition of dopants to the fiber material during manufacture. Note 2: Doubly and quadruply clad single-mode fibers have two zero-dispersion points, and thus two zero-dispersion slopes.