Optical Single-Sideband Modulation Based on a Dual-Drive MZM and a 120° Hybrid Coupler

被引：73

作者：

Xue, Min ^{[1
]}

Pan, Shilong ^{[1
]}

Zhao, Yongjiu ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Minist Educ, Key Lab Radar Imaging & Microwave Photon, Nanjing 210016, Jiangsu, Peoples R China

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2014年 / 32卷 / 19期

基金：

中国国家自然科学基金;

关键词：

Microwave photonics; optical single-sideband (OSSB) modulation; optical vector network analysis; radio-over-fiber (RoF); WIDE-BAND;

D O I：

10.1109/JLT.2014.2344853

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 for implementing high-performance optical single-sideband (OSSB) modulation based on a dual-drive Mach-Zehnder modulator (MZM) and a 120 degrees hybrid coupler is proposed and demonstrated. A RF signal is divided by the 120 degrees hybrid coupler into two parts with equal powers and a phase difference of 120 degrees, and then, led to the two RF ports of the dual-drive MZM. With a proper dc bias, an OSSB signal with the -1st and +2nd-order sidebands (or the +1st and -2nd-order sidebands) suppressed is generated. A numerical simulation and a proof-of-concept experiment are carried out. As compared with the conventional OSSB modulation based on a 90 degrees hybrid coupler, the suppression of the +2nd (or -2nd)-order sideband improves evidently the performance when the OSSB modulation is applied in a radio-over-fiber system or an optical vector network analyzer.

引用

页码：3317 / 3323

页数：7

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