Fig. 9: TMI threshold comparison between simulation and experimental results.
From: Transverse mode coupling in monolithic few-mode fiber laser oscillators

The simulated TMI threshold varies with different bending radii (dark red dashed line with error bars), accompanied by the experimental results with minimal bending diameters of 19.5 cm (black dot/cube), 17.5 cm (red dot/cube), and 14.5 cm (purple dot/cube)