Fig. 1. Linear fitting of different ranges in half cycle for bare fiber

Fig. 2. For coated fiber, relationship between Stokes vector and force in the experiment

Fig. 3. Stokes parameter simulation of theoretical design. (a) Stokes parameter curve of theoretical design; (b) for the designed Stokes curve, its position and rotation axis in the Poincare sphere

Fig. 4. Experimental setup

Fig. 5. Comparison between theoretical curve and experimental data of Stokes parameter. (a) Comparison of theoretical curve and experimental data; (b) rotation axis corresponding to theoretical curve and experimental data

Fig. 6. Comparison between theoretical line fitting and experimental line fitting. (a)Theoretical fitting curve; (b) experimental fitting curve