Fig. 1. Single wedge

Fig. 2. Double combo wedge

Fig. 3. Schematic diagram of spatial amplitude modulation spectral polarization measurement system

Fig. 4. Variation of normalized Wronskian determinant. (a) λ=546.07 nm; (b) y=1.5 mm

Fig. 5. Variation of uncertainty of Stokes parameter with analyzer angle

Fig. 6. Variation of total modulation efficiency with N

Fig. 7. Variation of modulation efficiency with analyzer angle. (a) Total modulation efficiency; (b) modulation efficiency of Stokes parameters

Fig. 8. Variation of modulation efficiency with wavelength. (a) Total modulation efficiency; (b) modulation efficiency of Stokes parameters

Fig. 9. Schematic diagram of experimental setup

Fig. 10. Spectral image of mercury argon lamp acquired by detector

Fig. 11. Spectral response curve of instrument

Fig. 12. Spectral calibration regression line

Fig. 13. Schematic diagram of spatial calibration

Fig. 14. Diagram of experimental data