Photonic Generation of Ultrawideband Signals With Large Carrier Frequency Tunability Based on an Optical Carrier Phase-Shifting Method

被引：11
|
作者：
Li, Wei [1 ]
Wang, Li Xian [1 ]
Zheng, Jian Yu [1 ]
Li, Ming [1 ]
Zhu, Ning Hua [1 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China
来源：
IEEE PHOTONICS JOURNAL | 2013年 / 5卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Ultrawideband (UWB); microwave photonics; ULTRA-WIDE-BAND; MODULATION;
D O I：
10.1109/JPHOT.2013.2284260
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：
We theoretically and experimentally demonstrated a novel photonic approach to generating ultrawideband (UWB) pulses with large carrier frequency tunability based on an optical carrier phase-shifting technique by cascading polarization modulators (PolMs) and a polarizer. The UWB pulses are generated by truncating a continuous wave (CW) RF signal into a pulsed signal in a photodetector (PD). The experimental results show that the base-band frequency components and the strong residual local oscillator (LO) signal are well suppressed. In addition, the generated UWB signals satisfy the Federal Communications Commission (FCC) spectral mask very well.
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页数：7
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