Comment on “Guided electromagnetic waves propagating in a plane dielectric waveguide with nonlinear permittivity”

Some remarks and numerics on TE waves guided in nonlinear media are presented. Connections with resent publications are discussed.

Figure 1

DCs according to (1): blue dashed, parameters as in [1]; red dashed, parameters $A=1,a_1={10}^{-3},a_2={10}^{-4},a_3={10}^{-4},{\epsilon }_1=1,{\epsilon }_2=9,{\epsilon }_3=4$.

Figure 2

DCs according to (1), parameters as in [1]: red DCs: $A^2=10$; blue, dashed DCs: $A^2=1$.

Figure 3

Dependence of $\gamma$ on $A^2$. Parameters as in [1] $\left(h=5,08\right)$.

Figure 4

DCs with parameters as in [1]. Green according to (1), red dashed according to the first equation (2), blue dashed according to the second equation (2). The dashed branches coincide with the green branches (approximately).