Figure 4
From: Towards REPO4 nanocrystal-doped optical fibers for distributed sensing applications
Backscattering intensity vs optical fiber length for YPO4 nanocrystal-doped optical fibers drawn at temperatures of 1900 °C, 1950 °C and 2000 °C, respectively, from: (a–c) preform #1; (d–f) preform #2 and (g–i) preform #3. The relative enhanced Rayleigh backscattered intensity, with respect to a SMF-28, is indicated with a red arrow in each plot.
