Table 1.

Optimization interval and optimal values of the optical readout parameters.

Subwavelength Grating Parameters	Lower Limit	Upper Limit	Optimal Value
p	0.2 μm	2 μm	0.756 μm
dc	0.1	1	0.354
λ	500 nm	1550 nm	641 nm
t1	0.5 μm	2 μm	0.664 μm
tm	50 nm	200 nm	0.194 μm
ag	0.2 μm	2 μm	1.170 μm