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. Author manuscript; available in PMC: 2013 Jun 24.
Published in final edited form as: Opt Lett. 2008 Nov 15;33(22):2632–2634. doi: 10.1364/ol.33.002632

Fig.1.

Fig.1

Measurement setup with a spectral-domain optical coherence tomography. Two reference arms with mirrors (M1 and M2) were separated by a distance of δ× and alternately accessed by a high speed fiber switch (SW). FC: fiber coupler; Cir: fiber circulator; Ga: galvanometer; PDA: InGaAs photodetector linear array; SLED: superluminescent diode;