Generation of Millimeter-Wave Ultra-Wideband Pulses Free of Strong Local Oscillation and Background

被引：5
|
作者：
Yu, Yuan [1 ]
Jiang, Fan [2 ]
Tang, Haitao [2 ]
Xu, Lu [2 ]
Liu, Xiaolong [2 ]
Dong, Jianji [1 ]
Zhang, Xinliang [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2016年 / 28卷 / 21期
基金：
中国国家自然科学基金;
关键词：
Millimeter-wave ultra-wideband (MMW-UWB); background free; balanced photo-detection; FREQUENCY UP-CONVERSION; PHOTONIC GENERATION; UWB MONOCYCLE; SIGNAL GENERATION; FIBER; TRANSMISSION; MODULATION; SWITCH;
D O I：
10.1109/LPT.2016.2594045
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 scheme of generating millimeter-wave (MMW) ultra-wideband (UWB) pulses free of strong local oscillation (LO) and background is proposed and demonstrated. The frequency of the optical Gaussian pulses is first up-converted by a Mach-Zehnder modulator, which is biased at its minimum transmission point to achieve carrier suppression modulation. Then, the up-converted Gaussian pulses are equally split into two parts with a relative time delay. At last, the two parts are injected into the two arms of a balanced photodetector (BPD) respectively. After the BPD, the low-frequency components are effectively suppressed and MMW-UWB pulses free of background and strong LO are generated. The polarity of generated MMW-UWB can be converted by adjusting the relative time delay between the two parts. In the experiment, a pair of polarity-reversed background-free UWB pulses centered at 25 GHz is successfully generated. The 10-dB bandwidth of the MMW-UWB spectra is 4.14 and 4.05 GHz, respectively.
引用
收藏
页码：2363 / 2366
页数：4
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