abnormal dispersion
2.From abnormal dispersion region to normal dispersion region,the bandwidth reduced and became flattened.
5.Because of fourth-order dispersion,cross-phase modulational instability occurs at two spectrum regions in both the normal and the abnormal dispersion regime of fiber.
6.Specially,an abnormal dispersion phenomena of surface eciton polaritons near the Exciton resonance frequeney is found.
7.Taken into account both second order dispersion and SPM in the abnormal-dispersion region of single-mode fibers, we obtained the expression of chirp induced by GVD and SPM.
8.Result QT dispersion of renal failure patients was abnormal signifi-cantly(P<0. 01). The changes of QTcd was significantly correlated with the degree of left ventricular hypertrophy, systolic BP and E/A ratio( r = 0. 41; 0. 43; - 0. 33, p < 0. 01) .
