Title :
Coherent Comb Generation With Continuous Sweep of Repetition Rate Over One-Octave
Author :
Weilin Xie ; Qian Zhou ; Chao Zhang ; Zongyang Xia ; Hongxiao Shi ; Yi Dong ; Lilin Yi ; Weisheng Hu
Author_Institution :
State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
We proposed and demonstrated a coherent optical frequency comb generation with broadband continuous sweep of repetition rate based on cascaded phase and intensity modulators. Broadband phase matching between electrical drive signals applied on the cascaded phase and intensity modulators is achieved by compensating propagation delay skew between optical signal path and electrical signal path. Therefore, phase mismatch induced flatness deterioration is effectively suppressed. A flat-top 19-line optical frequency comb with repetition rate continuously sweeping over one-octave from 8.5 to 19 GHz is obtained, where the overall power deviation is .
Keywords :
optical modulation; optical phase matching; continuous sweep; electrical drive signals; electrical signal path; frequency 8.5 GHz to 19 GHz; intensity modulators; optical frequency comb generation; optical phase matching; optical signal path; phase modulators; Broadband communication; Delays; Frequency modulation; Optical filters; Optical modulation; Phase modulation; Propagation delay; Optical frequency comb; comb-spacing; continuous sweep; continuous-wave (CW) modulation; phase modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2287215
