Fig. 1. Schematic diagram of polarization-DOFP array and its crosstalk. (a) Array structure^[11]; (b) pixel B receives crosstalk from micro-polarizer A

Fig. 2. Schematic diagram of crosstalk patterns^[1]. (a) Optical crosstalk; (b) electrical crosstalk

Fig. 3. Diffraction intensity distribution^[2]. (a) Simulated structure of 10 μm superpixel; FDTD simulation results when the MPA-DoFP spacing is (b) 0.5 μm and (c) 1 μm; (d) measured results of 30 μm pixels

Fig. 4. Relationship between extinction ratio and collimated light incident angle^[4]

Fig. 5. Relationship between the measured DoP and AoP measurement error with respect to the incident angle of collimated light^[5]

Fig. 6. Measured extinction ratio values for three lenses with different focal lengths at various F-numbers^[8]

Fig. 7. Effect of crosstalk on measured stokes result^[8]

Fig. 8. Interfaces between pixels^[10]

Fig. 9. MPA-CMOS coupled-structure^[11]。(a) Conventional bonding on-glass；(b) Sony deposition on-chip

Fig. 10. (a) Optimized structure of deep trench for photodiode isolation^[11]; (b) higher extinction ratio compared with traditional structure

Fig. 11. Single pixel crosstalk FDTD simulation^[15]. (a) MPA grating structure and it's (b) grating diffraction result

Fig. 12. Schematic diagram of direct crosstalk optical path^[17] for (a) on-glass and (b) on-chip

Fig. 13. Crosstalk model^[18]. (a) Crosstalk paths ①~⑤; (b) crosstalk coefficients distribution

Fig. 14. Numerical relation^[18] of (a) crosstalk coefficient and condition number and (b) F/# - extinction ratio-condition number

Fig. 15. Simulation results of polarization infrared detector^[20]. (a) Relationship between extinction ratio and thickness of substrate. The light field distribution of (b) TM and (c) TE incident light A with wavelength of 5 μm, and TE incident light with wavelengths of (d) 4.5 μm B and (e) 5 μm C. Light A, B, and C are marked in (a)

Fig. 16. Schematic diagram of experimental measurement system^[21] for determining the influencing factors of crosstalk

Fig. 17. F/#-quantization error estimation results of different lenses^[21]. (a) Wave length 413 nm−573 nm; (b)wave length 620 nm−690 nm

Fig. 18. Effect of F/# on crosstalk^[22]. (a) Focal length factor; (b) aperture factor

Fig. 19. Error in the analyzer matrix^[22] of (a) on-glass and (b) on-chip MPA-COMS. The black horizontal line indicates the data range and the central red horizontal line represents the median

Fig. 20. Typical crosstalk suppression structure of DoFP polarization camera. (a) Full-depth deep-trench isolation^[23]; (b) grid substrate^[24]; (c) compound eyes diaphragm^[25]

Fig. 21. Simulation results of crosstalk when MPA sensor spacing is 1, 5, 10, 15, 30 and 50 μm, respectively^[29]