title: Simple and seamless broadband optical frequency comb generation using an InAs/InP quantum dot laser.
abstract: A simple and seamless broadband optical frequency comb (OFC) generator is proposed and experimentally demonstrated using a Fabry-Perot quantum dot mode-locked laser combined with a dual-driven LiNbO3Mach-Zehnder modulator driven by a low-power radio frequency (RF) signal. It is experimentally demonstrated that the 10-dB seamless bandwidth of the OFC is 8.2 nm (1.02 THz), which has 62 and 40 comb lines for frequency intervals of 16.56 GHz and 24.84 GHz, respectively. The single-sideband phase noise is as low as -112 and -108  dBc/Hz at an offset of 10 kHz, respectively, for the photodetector-converted 16.56 and 24.84 GHz frequency carriers. Correspondingly, the RF linewidths of the 16.56 GHz and 24.84 GHz carriers are about 251 Hz-263 Hz, respectively. Using a QD laser, an ultra-low phase noise and quasi-tunable broadband OFC generator is obtained easily.
authors.forename: Li
authors.initials: L
authors.lastname: Liu
authors.forename: Xiupu
authors.initials: X
authors.lastname: Zhang
authors.forename: Tiefeng
authors.initials: T
authors.lastname: Xu
authors.forename: Zhenxiang
authors.initials: Z
authors.lastname: Dai
authors.forename: Shixun
authors.initials: S
authors.lastname: Dai
authors.forename: Taijun
authors.initials: T
authors.lastname: Liu