Fig. 1. Spectral distribution of the fiber array-based spectrometer.

Fig. 2. Schematic of the experimental setup. A, B, C, H, and P are the fiber couplers. D, E, F, G, I, L, M, N, O, R, T, and U are achromatic doublet lenses. FS are the fused silica materials. X and Y are the mirrors. J is a mirror for collecting two-channel signals. S is the grating. V is the line-array camera. Q is the fiber array. K is a 2-dimensional galvanometer raster scanner.

Fig. 3. Noise floor of the SD-OCT system. Curve A is the single channel, and Curve B is the two channels.

Fig. 4. Noise floor of the SD-OCT system with the short-pulsed SC light source. Curve A is the single channel, and Curve B is the two channels.

Fig. 5. Images of the Teflon material acquired with (a) the single channel and (b) the two channels. (c) The average depth intensity of all A-lines.