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. Author manuscript; available in PMC: 2019 Aug 22.
Published in final edited form as: Opt Lett. 2019 May 15;44(10):2386–2389. doi: 10.1364/OL.44.002386

Fig. 2.

Fig. 2

Characterization of the illumination focal volume through a MMF in a 22% glucose solution. (a,b) Focal volume at the center of the MMF characterized by (a) the IEF and (b) FWHM as a function of the calibration medium (n = 6 fiber segments, open circles represent individual measurements). (c,d) Radial variation in (c) the peak intensity and (d) FWHM of the focal volume for a calibration done in air and in a 22% glucose solution (n = 3 fiber segments). Full circles are average values and error bars represent the standard deviation.