Microwave Generation With Photonic Frequency Sextupling Based on Cascaded Modulators

被引：44

作者：

Gao, Yongsheng ^{[1
]}

Wen, Aijun ^{[1
]}

Yu, Qingwei ^{[1
]}

Li, Ningning ^{[1
]}

Lin, Guibin ^{[1
]}

Xiang, Shuiying ^{[1
]}

Shang, Lei ^{[1
]}

机构：

[1] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2014年 / 26卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Frequency sextupling; Mach-Zehnder modulator (MZM); microwave generation; microwave photonics; OPTICAL-INJECTION LOCKING; SIGNAL GENERATION;

D O I：

10.1109/LPT.2014.2318772

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 to optically generate a microwave signal with frequency sextupling is proposed. The proposed scheme is based on cascading an intensity modulator (IM) and a dual-parallel Mach-Zehnder modulator (DPMZM), without any optical or electrical filter. The low frequency local oscillator signal is divided into two paths, with one path driving the IM at the minimum transmission point and the other path driving the upper arm of the DPMZM. By controlling the three dc biases of the DPMZM, the third-order sidebands are generated, with other sidebands well suppressed. A 20-dB electrical spurious suppression ratio is demonstrated in the experiment. The phase noise measurements show that the phase noise performance of the generated microwave signal is not deteriorated by the optical system. The proposed scheme has no strict requirements for the modulation indexes and the generated signal exhibits advantages of high frequency tunability and purity.

引用

页码：1199 / 1202

页数：4

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