Figure 14

The streamlines of the transverse component of the Poynting vector of the fundamental air core mode for the hollow core fibre with 12 ellipsoidal cladding capillaries. The parameters of the fibre are described in the text. The densities of the streamlines are the same on both panels: left (a/b = 0.474) and right (a/b = 0.524) (Fig. 13). The distribution of the radial component of the Poynting vector is shown in color. (We used COMSOL Multiphysics v.4.4. www.comsol.com. software to create the image).