(
A) Schematic of fiDWS. The interferometer detection path is shown in both horizontal (H) and vertical (V) views. Transverse intensity distributions of sample and reference light, at positions indicated by red and blue dotted lines, are shown (insets) with correspondingly colored dotted frames. SMF, single-mode fiber; MMF, multimode fiber; L1 to L4, lenses; VOA, variable fiber-optic attenuator; PL, Powell lens; BS, beamsplitter; CL, cylindrical lens. (
B) Intensity patterns of reference light used in this work (black) and previous work (
45) (red). DN, digital number. (
C) Comparisons of estimated
N
Speckle (squares and circles) and SANR (triangles) versus width of rectangular window used for pixel binning. Corresponding SANR (for this work), based on optimized pixel binning (fig. S5), is indicated by the spherical symbol. Blue dashed ovals with arrows point to corresponding