Flexible Tunable Nyquist Pulse Generation Using Recirculating Frequency Shift Loop
Flexible Tunable Nyquist Pulse Generation Using Recirculating Frequency Shift Loop
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DOI：
10.1109/jphot.2023.3270874
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发表时间：
2023-06
影响因子：
2.4
通讯作者：
Xinrui Ban;Jiaxin Zhou;Jinxin Jiang;Jiakang Li;Lipei Song;Dongfang Jia;Zhaoying Wang
中科院分区：
文献类型：
--
作者：
Xinrui Ban;Jiaxin Zhou;Jinxin Jiang;Jiakang Li;Lipei Song;Dongfang Jia;Zhaoying Wang
提出了一种基于循环频移环（RFSL）的光学奈奎斯特脉冲生成新方法并进行了实验证明。本文采用RFSL输出的大量平坦锁相梳状线来合成奈奎斯特脉冲，具有超窄且灵活可调的脉宽。首次从理论上详细分析RFSL产生奈奎斯特脉冲的条件。实验中，平坦谱线的数量在10到40的范围内连续调谐，对应于8.9 ps到2.4 ps的脉冲宽度。同时，通过实验获得了重复频率从7.5 GHz到15 GHz可调的奈奎斯特脉冲。
A novel method of optical Nyquist pulse generation based on recirculating frequency shift loop (RFSL) is proposed and experimentally demonstrated. In this article, a large number of flat phase-locked comb lines output from RFSL are used to synthesize Nyquist pulse, which has ultra-narrow and flexible tunable pulse width. It is the first time to theoretically analyze the condition of Nyquist pulse generation by RFSL in detail. In the experiment, the number of flat spectral lines is continuously tuned in the range of 10 to 40 corresponding to the pulse width of 8.9 ps to 2.4 ps. Meanwhile, Nyquist pulses with tunable repetition rate from 7.5 GHz to 15 GHz are obtained experimentally.