Figure 10

The distribution of projection of the transverse component of the Poynting vector on the radius – vector drawn from the origin for the double capillary fibre at a wavelength of λ = 0.9 µm (Fig. 8). The streamlines of the transverse component of the Poynting vector of the fundamental air core mode are shown in black. (We used COMSOL Multiphysics v.4.4. www.comsol.com. software to create the image).