Fig. 8: Temperature measurement results at a centimeter-level spatial scale detected using a conventional demodulation method and slope-assisted demodulation method.
From: Physics and applications of Raman distributed optical fiber sensing
a Results measured using the conventional demodulation method, (b) distribution of superimposed Raman OTDR trace after attenuation compensation, (c) results measured using the slope-assisted coefficients. Reprinted with permission from ref. 57, © 2021 Chinese Laser Press
