Series of optimizations for one, three and six fibers on the first ring of microlenses for a clear aperture. The design spectral bandwidth were 0%, 10% and 20% and the contrasts 1 × 10⁻⁴, 3 × 10⁻⁵ and 1 × 10⁻⁵. A 0.06λ/D peak-to-peak telescope tip-tilt jitter was also taken into account. Each microlens has a circum-diameter of 1.8λ/D. For each SCAR design we show the pupil-plane phase pattern, its corresponding point spread function and its raw contrast η_s/η_p as a function of wavelength averaged over the marked fibers. The chromatic response shows the raw contrast after the single-mode fiber. The second-order nulling on the fiber face is clearly visible in every design. In Table 1 we list the fixed and varied parameter in this figure. The throughput of all SCAR designs shown in this figure can be found in Fig. 9.