Ultra-Wideband Generation Based on Cascaded Mach-Zehnder Modulators

被引：19
作者：
Yu, Yuan [1 ]
Dong, Jianji
Li, Xiang
Zhang, Xinliang
机构：
[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2011年 / 23卷 / 23期
基金：
中国国家自然科学基金;
关键词：
Counter-phase modulation; in-phase modulation; Mach-Zehnder modulator (MZM); ultra-wideband (UWB); ELECTROOPTIC MODULATOR; PHASE INVERSION; UWB; TRANSMISSION; AMPLIFIER;
D O I：
10.1109/LPT.2011.2169241
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 simple approach to generating ultra-wideband (UWB) pulses with a single optical carrier is proposed and demonstrated. The approach is realized by using a single laser diode (LD) and two cascaded Mach-Zehnder modulators (MZMs). In the experiment, the two MZMs are biased at opposite slopes of their modulation curves respectively and the time delay between them is variable. Negative monocycle pulses with a center frequency of 4.3 GHz and a fractional bandwidth of 165%, and positive monocycle pulses with a center frequency of 4.3 GHz and a fractional bandwidth of 188% are generated, respectively. The feasibility of high order UWB pulses generation with a single optical carrier is also discussed.
引用
收藏
页码：1754 / 1756
页数：3
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