OCT images of the six phantoms, with the average A-scans in blue next to the images. All images are 500 μm wide. Images for phantoms A-D are 150 μm optical depth, while those for phantoms E and F are 300 μm optical depth (wS: wideband SDOCT, nS: narrowband SDOCT, wT: wideband TDOCT, nT: narrowband TDOCT).