Ying Pan, Tan Heyun, Zhang Junwei, He Mingbo, Xu Mengyue, Liu Xiaoyue, Ge Renyou, Zhu Yuntao, Liu Chuan, Cai Xinlun
Opt Lett. 2021 Mar 15;46(6):1478-1481. doi: 10.1364/OL.418996.
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.
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。
