具有高效移相器的低损耗边缘耦合薄膜铌酸锂调制器。

Low-loss edge-coupling thin-film lithium niobate modulator with an efficient phase shifter.

作者信息

Ying Pan, Tan Heyun, Zhang Junwei, He Mingbo, Xu Mengyue, Liu Xiaoyue, Ge Renyou, Zhu Yuntao, Liu Chuan, Cai Xinlun

出版信息

Opt Lett. 2021 Mar 15;46(6):1478-1481. doi: 10.1364/OL.418996.

PMID:33720216

Abstract

Thin-film lithium-niobate-on-insulator (LNOI) is a very attractive platform for optical interconnect and nonlinear optics. It is essential to enable lithium niobate photonic integrated circuits with low power consumption. Here we present an edge-coupling Mach-Zehnder modulator on the platform with low fiber-chip coupling loss of 0.5 dB/facet, half-wave voltage of 2.36 V, electro-optic (EO) bandwidth of 60 GHz and an efficient thermal-optic phase shifter with half-wave power of 6.24 mW. In addition, we experimentally demonstrate single-lane 200 Gbit/s data transmission utilizing a discrete multi-tone signal. The LNOI modulator demonstrated here shows great potential in energy-efficient large-capacity optical interconnects.

摘要

绝缘体上的薄膜铌酸锂（LNOI）是用于光互连和非线性光学的极具吸引力的平台。实现低功耗的铌酸锂光子集成电路至关重要。在此，我们展示了该平台上的一种边缘耦合马赫曾德尔调制器，其具有0.5 dB/面的低光纤 - 芯片耦合损耗、2.36 V的半波电压、60 GHz的电光（EO）带宽以及半波功率为6.24 mW的高效热光移相器。此外，我们通过实验演示了利用离散多音信号进行单通道200 Gbit/s数据传输。此处展示的LNOI调制器在节能大容量光互连方面显示出巨大潜力。