Flexible Tunable Nyquist Pulse Generation Using Recirculating Frequency Shift Loop

被引：0
作者：
Ban, Xinrui [1 ]
Zhou, Jiaxin [1 ]
Jiang, Jinxin [1 ]
Li, Jiakang [1 ]
Song, Lipei [2 ]
Jia, Dongfang [1 ]
Wang, Zhaoying [1 ]
机构：
[1] Tianjin Univ, Sch Precis Instrument & Optoelect Engn, Key Lab Minist Educ Optoelect Informat Technol, Tianjin 300072, Peoples R China
[2] Nankai Univ, Coll Modern Opt, Tianjin 300350, Peoples R China
来源：
IEEE PHOTONICS JOURNAL | 2023年 / 15卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Optical filters; Optical fibers; Optical pulse generation; Optical modulation; Stimulated emission; Modulation; Optical polarization; Nyquist pulse; optical communication; optical frequency combs; Index Terms; recirculating frequency shift loop; MACH-ZEHNDER MODULATOR; CHANNELS;
D O I：
10.1109/JPHOT.2023.3270874
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：
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.
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页数：5
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