Figure 6
Mesurement results. (a) The loss spectrum of 40 crossings (cyan line), fitting curve (blue dash line), the loss spectrum of 60 crossings (magenta line), and fitting curve (pink dash line). (b) The loss spectrum of coiled waveguides with 15 crossings, and the fitting curve (red dash line). (c) Output power spectra of the sensing part (shown as P out1 in red and P out2 in blue).
