Fig. 1. Block diagram of SM polarization measurement system

Fig. 2. Simulation of spectral modulation process. (a) Normalization parameters of incident linear polarized light; (b) simulation curve of modulation spectrum

Fig. 3. Influence of spectral broadening on modulation spectrum. (a) Comparison of original modulation spectrum and convolved spectrum; (b) curve of polarimetric efficiency

Fig. 4. Schematic diagram of experimental set-up

Fig. 5. Calibration site of relative response coefficient

Fig. 6. Spectra of dual-channel unpolarized light

Fig. 7. Original spectrum of 0° reference linear polarized light

Fig. 8. Modulation function of 0° reference linear polarized light. (a) Modulation function; (b) fitting residual error

Fig. 9. Retardation of multiple-order wave plate

Fig. 10. Polarimetric efficiency of 0° reference linear polarized light

Fig. 11. Polarimetric efficiency of system

Fig. 12. Experiment site for polarization measurement accuracy verification of system

Fig. 13. Theoretical outputs and measurement results of VPOLS. (a) Original spectra; (b) modulation function; (c) measurement error of AoLP; (d) measurement value of DoLP and its error

Fig. 14. Measurement results when VPOLS rotation angle is 38.3°. (a) DoLP varying with wavelength; (b) AoLP error varying with wavelength

Fig. 15. Measurement results when VPOLS rotation angle is 59.0°. (a) DoLP varying with wavelength; (b) AoLP error varying with wavelength