Figure 3
From: Towards REPO4 nanocrystal-doped optical fibers for distributed sensing applications

FIB-SEM micrographs of transverse sections from the optical fiber core for fibers drawn from preform #3 at: (a) 1900 °C, (b) 1950 °C and (c) 2000 °C. Insets show in more detail the influence of drawing temperatures on the nanoparticle features in the fiber drawing direction. (d) Histograms depict the mean particle size along drawing direction (< l >), standard deviation (σ) and particle distribution sizes for the nanocrystals at the corresponding drawing temperature.