Figure 13. Same as in Figure 9 considered for sech-tanh type pulse

From

Properties of Optical Soliton in a Three Level Medium with Quintic Nonlinearity

Preeti Agarwal, A. Ray, A. Roy Chowdhury

International Journal of Physics. 2015, 3(2), 45-51 doi:10.12691/ijp-3-2-1