Fig. 4: Brillouin maps and Brillouin gain spectra measured by dual combs with different bandwidths.
From: Brillouin expanded time-domain analysis based on dual optical frequency combs
Brillouin map measured by dual comb of a 2 GHz, b 5 GHz, and c 10 GHz, respectively. d Brillouin gain spectrum obtained by 2, 5, and 10 GHz bandwidth dual OFCs
