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

Volume

25

Issue

24

fYear

2013

fDate

Dec.15, 2013

Firstpage

2405

Lastpage

2407

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2013.2287215

Filename

6646210