Fig. 1. Light field profiles of two modes of light beams. (a) LP₂₁ mode beam; (b) LP₀₁ mode beam

Fig. 2. Size diagrams of optical fiber and pipe used. (a) Fin dolphin-shaped fiber probe pattern; (b) common tapered fiber probe;(c) dimension of target pipeline

Fig. 3. Simulated light field and diameter comparison. (a) Light field distribution of fin dolphin-shaped fiber; (b) optical field distribution of common tapered fiber; (c) fiber diameter varying with distance

Fig. 4. Experimental figures without and with filter. (a) Experimental figure without filter; (b) experiment figure with filter

Fig. 5. Diagram of experimental setup

Fig. 6. Process diagrams of particle transport experiment. (a)-(e) Diagrams of particle transport process; (f)-(j) directional transport of particles to pipe

Fig. 7. Comparison of transport of two types of fiber at low power. (a)-(e) Diagrams of transport process of fin dolphin-shaped fiber; (f)-(j) diagrams of transport process of normal tapered fiber

Fig. 8. Comparison of transport of two types of fiber at high power. (a)-(e) Diagrams of transport process of fin dolphin-shaped fiber; (f)-(j) diagrams of transport process of normal tapered fiber

Fig. 9. Plot of average transport speed varying with output power

Fig. 10. Force diagrams of fin dolphin-shaped fiber particles. (a) Lateral force curve; (b) axial force curve

Fig. 11. Force diagrams of ordinary tapered fiber particle. (a) Lateral force curve; (b) axial force curve

Fig. 12. Transport of Chlorella cells by fiber optic conveyor belt