Figure 7

Experimental measured reflectivity curves of the comb filter, the spectral evolved from 0.236 nm to 1.524 nm. (a) 1.524 nm. (b) 0.521 nm. (c) 0.397 nm. (d) 0.283 nm. (e) 0.254 nm. (f) 0.236 nm. The different insertion losses of each sample may lead to different y-axis scale.