“…Experimentally, we have generated quasi-tunable OFC with frequency intervals of 23.3 GHz, 35 GHz and 70 GHz, which spreads across simultaneous and seamless 86, 56 and 30 comb lines in a 10-dB spectrum bandwidth, respectively. Compared with the reported OFC generators [4][5][6][7][8][9][10][11][12][13], this scheme is not using polarization controllers, optical filters and optical phase lock loops, so it is considered very simple. Using this technique, it is easy to generate quasi-tunable and low phase noise OFCs with seamless broadband and high stability.…”