Figure 3

Measured and simulated power splitting ratios of the AAC for (a) V-polarized and (b) H-polarized fundamental modes over a wavelength range from 1495 nm to 1600 nm, where the results from exits L and R are shown as green and purple dots for experimental measurements and gold and green dash curves for simulation results, respectively. (c,d) Simulated splitting ratios of the AAC for V- and H-polarized fundamental modes, respectively, for a wavelength range from 750 nm to 2000 nm, where the red stars mark 50%/50% splitting ratios on two special wavelengths at V-polarized 1631 nm and H-polarized 1477 nm, exactly a photon pair generated via a type-II SPDC when pumped by an H-polarized 775 nm laser, upon which the AAC can act as a non-polarizing beam splitter for quantum-polarization state generation.