Figure 8: Phantom experiment in spectra B mode. For each thickness, the absorbance was measured. The absorbance of light was 14% ± 2% for the100μm layer thickness, 11% ± 2% for the 200 μm layer thickness and 4% ± 2% for the 300 μm layer thickness. The error bars in Figure 8 represents thestandard deviation of the normalized intensity profile within a region of interest at each depth location.