Figure 5. SNR in R7 (blue) and R8 (green) as a function of the fraction of the CRP occupied by R8, $\widehat{l_8}$, calculated for a CRP of fixed length l = 100µm at three light levels, N_i.

(A) Calculated without modelling the saturation of transduction units. (B) Calculated with saturation. Saturation reduces SNR at the highest intensity. Degree of polarization d = 0.1.