Fig. 11
From: Optical vortices in waveguides with discrete and continuous rotational symmetry
Evolution of the input Gaussian pulses [Eq. (28)] with the parameters P=0.5, τ=2.0 and M=0.3 injected in all cores of ring 7-core MCF (best combining) (a). Corresponding input intensity distribution in core 7 (dashed red line) and the distribution at compression point (solid blue line) are shown in logarithmic (b) and normal (c) scales. 83.5% of total input energy E is combined in the core 7. The pulse width (FWHM) is reduced by 5.74x. The peak power increases in 19.5x