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High-Performance Hybrid Silicon and Lithium Niobate Mach–Zehnder Modulators for 100 Gbit/s and Beyond

Date: 2018-08-20
Time: 10:00
Venue: 中国科学院物理研究所 A楼2层会议室
Speaker: 蔡鑫伦


Optical modulators are crucial in optical communication links. Ideally, they should feature low insertion loss, low drive voltage, large modulation bandwidth, high linearity, compact footprint and low manufacturing cost. Unfortunately, these criteria have only been achieved separately. Based on a Silicon and Lithium Niobate hybrid integration platform, we demonstrate Mach–Zehnder modulators that simultaneously fulfill these criteria. The presented device exhibits an insertion-loss of 2.5 dB, voltage-length product of 1.35 V?cm, electro-optic bandwidth of at least 70 GHz, high linearity and modulation rates up to 112 Gbit/s. The realization of a high-performance modulator is due to seamlessly integration of high-contrast waveguide based on Lithium Niobate - the most mature modulator material - with compact, low-loss silicon circuits. The hybrid platform demonstrated here allows "best-in-breed" active and passive components to be combined and opens up new avenues for future high-speed, energy efficient and cost-effective communication networks.

蔡鑫伦 中山大学电子与信息工程学院 教授
2012年英国 University of Bristol电子工程系博士毕业,2014年入选“青年千人计划”,2016年获得基金委优秀青年基金项目支持,承担基金委重大项目课题一项。主要研究兴趣为用于高速光通信网络,光互联以及量子信息系统的关键元器件,重点开展光电混合集成器件与芯片技术的研究。以第一作者或通讯作者在SCI刊物上发表论文30篇,其中Science封面文章1篇,Nature communications 2篇 ,Light 1篇,Optica 1篇。2014年入选“青年千人计划”,2016年获得基金委优秀青年基金项目支持。承担基金委重大项目课题一项。