Figure 5. Propagation losses of the MCF cores.

(a) Insertion loss of the central MCF core as a function of MCF length. The red line is a linear fit to the experimental data points. The equation of the fit is also given. (b) Spatial map of the attenuations across the 11 × 11 array of MCF cores. The units of the colour map are dB m⁻¹.