Photonic generation of microwave waveforms based on a dual-polarization quadrature phase-shift-keying modulator

被引：8
|
作者：
Li, Xiangrui [1 ,2 ]
Wen, Aijun [1 ,2 ]
Tu, Zhaoyang [1 ,2 ]
Xiu, Zhongguo [1 ,2 ]
机构：
[1] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Shaanxi, Peoples R China
[2] Xidian Univ, Collaborat Innovat Ctr Informat Sensing & Underst, Xian 710071, Shaanxi, Peoples R China
来源：
APPLIED OPTICS | 2018年 / 57卷 / 25期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
MACH-ZEHNDER MODULATOR; SAGNAC LOOP; FREQUENCY; DISPERSION; CONVERSION;
D O I：
10.1364/AO.57.007398
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel microwave waveform generator based on a dual-polarization quadrature phase-shift-keying (DP-QPSK) modulator is proposed and experimentally demonstrated in this paper. The X-QPSK modulator is modulated by a local oscillator signal. For XI Mach-Zehnder modulator (MZM), odd sidebands are eliminated; for XQ-MZM, even sidebands are eliminated, while the Y-QPSK modulator is not modulated. Triangular or square waveforms can be generated by biasing the X-QPSK and adjusting the polarization controller properly. 3 GHz and 6 GHz triangular and square waveforms are successfully generated by experiment. The scheme does not need a high modulation index (m = 1.25 in this paper). In addition, it features low cost and a simple structure without a filter or phase shifter. (C) 2018 Optical Society of America
引用
收藏
页码：7398 / 7401
页数：4
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