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. Author manuscript; available in PMC: 2019 Sep 6.
Published in final edited form as: Opt Lett. 2015 Apr 1;40(7):1426–1429. doi: 10.1364/OL.40.001426

Fig. 2.

Fig. 2.

(a) Frequency domain signal from one pixel in the MB filled capillary tube with and without the pump on. The relevant aspects of the background subtraction algorithm are labeled where the background is assumed to vary linearly over a narrow frequency range. (b) comparison of PPOCT images with background subtraction demonstrating the complete removal of the of noise background.