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. Author manuscript; available in PMC: 2018 Apr 3.
Published in final edited form as: Opt Lett. 2016 Jan 15;41(2):250–253. doi: 10.1364/OL.41.000250

Fig. 2.

Fig. 2

A, schematic of the ultrahigh-resolution endoscopic SD-OCT system and the measured point spread function (PSF, inset). C, multi-element achromatic collimator; G, grating; FC, fiber coupler; M, mirror; MESL, multi-element scan lens; P, linear K mapping prism; PC, polarization controller; PP, prism pair; RJ, fiber-optic rotary joint. B, spectrum of the SuperK input to the SD-OCT system (black line) and the back-reflected spectra by a mirror from the sample arm (red line) and reference arm (blue line) to the spectrometer.