Fig. 1. Schematic diagram of structure of adjustable precision configurable variable optical attenuator. (a) Overall; (b) detail of core part

Fig. 2. Fluid-solid coupling simulation area. (a) Model diagram; (b) film stress nephogram; (c) nephogram of fluid velocity [results are obtained from COMSOL Multiphysics simulation software (pressure is 488 Pa)]

Fig. 3. Dual fiber docking coupling efficiency varying with control pressure [results are from FDTD simulation software ( λ=1550 nm)]

Fig. 4. Experimental principle and physical test device of light intensity coupling efficiency. (a) Experimental principle; (b) physical test device

Fig. 5. Relationship among fiber bearing platform movement, optical attenuation, and pressure (film thickness is 0.4 mm). (a) Fiber bearing platform movement varying with pressure; (b) optical attenuation varying with pressure

Fig. 6. Experimental measurement. (a) Schematic; (b) wavelength dependent loss (1530-1565 nm)

Fig. 7. Light attenuation varying with control pressure for VOA configured with different film thicknesses