Signal Frequency Chirp of Photonic Time-Stretch System Due to Nonlinear Dispersion

被引：1
作者：
Liu, Changqiao [1 ]
Jin, Xiaofeng [1 ]
Jin, Xiangdong [1 ]
Yu, Xianbin [1 ]
Tan, Qinggui [2 ]
Wang, Guoyong [2 ]
机构：
[1] Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China
[2] China Acad Space Technol Xian, Xian 710000, Shaanxi, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2019年 / 31卷 / 06期
关键词：
Microwave photonics; chromatic dispersion; photonic time-stretch; fiber optics links and subsystems; GENERATION;
D O I：
10.1109/LPT.2019.2897723
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this letter, signal frequency chirp due to nonlinear dispersion in a photonic time-stretch system is analyzed, and a correction method is proposed and experimentally demonstrated. A time-dependent frequency transfer function is derived for the first time, which can be taken as an instruction for the correction of signal frequency chirp in a digital domain. The numerical simulation shows the proposed correction method applicable to both the single-tone signal and broadband signal transmissions. The experimental result proves that the demodulated signal quality of a transmitted QPSK signal is significantly improved after the correction of signal frequency chirp in the digital domain.
引用
收藏
页码：443 / 446
页数：4
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