Improvement in the resolution of SSOCT after calibration.
The schematic outline of phase-stabilized SSOCT system (ADC: analog to digital converter; BPD: balanced photodetector; C: collimators; FBG: fiber bragg grating; G: galvanometer scanner, L: lens, RM: reflective mirrors, SLS: swept-laser Source, and TTL: TTL signal generator).
(a) FBG analog output and the raw signal. (b) Oscilloscope trace showing the synchronization of FBG trigger, raw signal, and MZI-OC. (c) The temporal phase response of cuvette at depth before stabilization and (d) after stabilization (note the scale).
(a) Orientation of the cuvette with respect to the beam (b) corresponding 1D depth profile (A—glass thickness, B—optical path thickness, C—, 1, 2, 3, 4, are the surfaces of glass cuvette).
(a) Image of a cuvette of thick containing a bubble of [1, 2, 3, 4 are the surfaces corresponding to 1, 2, 3, 4, in Fig. 4(a) and S is the self-interference image). (b) Corresponding 1D profile showing the bubble induced shift in peak. (c) Temporal phase response at peak.
Image of a cuvette of thick with (a) very small bubbles and corresponding temporal phase response at peak (b) of (a).
Image of the cuvette with scattering media (a) without any bubble, (c) with a bubble, and their corresponding temporal phase response at the self-interference peak in (b) and (c).
(a) Cuvette with very small bubbles and (b) the corresponding temporal phase response.
Image of cuvette containing fast moving bubbles.
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