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(a) Schematic diagram of the portable SS-OCT system used for monitoring wound healing. (b) Layout of the handheld probe for skin scanning. (c) Picture of the handheld probe. PC: polarization controller, CIR: optical circulator, FBG: fiber Bragg grating, FC: fiber coupler, DAQ: data acquisition board, C: collimator, L1, L2, L3: lenses, M: mirror, and G: galvanometer.
