Fig. 1. Schematic of spectrally modulated polarization spectrometer system

Fig. 2. Modulated images of target light with different polarization states

Fig. 3. Stray light distributions. (a) Ray tracing results from LightTools; (b) measured results

Fig. 4. Spatial dimension stray light coefficient test. (a) With black band; (b) without black band

Fig. 5. Spatial dimension stray light coefficients at different fields of view. (a) S beam; (b) P beam

Fig. 6. Spectral dimension stray light coefficient test. (a) With notch filter; (b) without notch filter

Fig. 7. Spectral dimension stray light coefficients at different fields of view. (a) S beam; (b) P beam

Fig. 8. Impact of stray light on radiation measurement. (a)‒(d) Different stray light coefficients

Fig. 9. Impact of stray light on DoLP measurement. (a)‒(d) Different stray light coefficients

Fig. 10. Modulated spectral distributions on detector when DoLP of target light is 1 and AoLP is different

Fig. 11. Stray light distribution matrix measurement setup

Fig. 12. Experimental flow chart

Fig. 13. Stray light coefficient experimental correction results. (a) S beam; (b) P beam

Fig. 14. Radiation measurement correction results. (a)‒(c) Measured results; (d)‒(f) relative errors in radiation measurement

Fig. 15. DoLP measurement correction results. (a)‒(c) Measured results; (d)‒(f) absolute errors in DoLP measurement