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High-coherence parallelization in integrated photonics
Nature Communications ( IF 14.7 ) Pub Date : 2024-09-10 , DOI: 10.1038/s41467-024-52269-7
Xuguang Zhang 1 , Zixuan Zhou 1 , Yijun Guo 1 , Minxue Zhuang 1 , Warren Jin 2 , Bitao Shen 1 , Yujun Chen 1 , Jiahui Huang 1 , Zihan Tao 1 , Ming Jin 1 , Ruixuan Chen 1 , Zhangfeng Ge 3 , Zhou Fang 4 , Ning Zhang 4 , Yadong Liu 4 , Pengfei Cai 4 , Weiwei Hu 1 , Haowen Shu 1 , Dong Pan 4 , John E Bowers 2 , Xingjun Wang 1, 3, 5 , Lin Chang 1, 5
Affiliation  

Coherent optics has profoundly impacted diverse applications ranging from communications, LiDAR to quantum computations. However, developing coherent systems in integrated photonics comes at great expense in hardware integration and energy efficiency. Here we demonstrate a high-coherence parallelization strategy for advanced integrated coherent systems at minimal cost. By using a self-injection locked microcomb to injection lock distributed feedback lasers, we achieve a record high on-chip gain of 60 dB with no degradation in coherence. This strategy enables highly coherent channels with linewidths down to 10 Hz and power over 20 dBm. The overall electrical-to-optical efficiency reaches 19%, comparable to that of advanced semiconductor lasers. This method supports a silicon photonic communication link with an unprecedented data rate beyond 60 Tbit/s and reduces phase-related DSP consumption by 99.99999% compared to traditional III-V laser pump schemes. This work paves the way for realizing scalable, high-performance coherent integrated photonic systems, potentially benefiting numerous applications.



中文翻译:


集成光子学中的高相干并行化



相干光学对从通信、激光雷达到量子计算等多种应用产生了深远的影响。然而,开发集成光子学相干系统需要在硬件集成和能源效率方面付出巨大代价。在这里,我们展示了以最低成本实现先进集成相干系统的高相干并行化策略。通过使用自注入锁定微梳来注入锁定分布式反馈激光器,我们实现了创纪录的 60 dB 片上增益,并且相干性没有下降。该策略可实现线宽低至 10 Hz 且功率超过 20 dBm 的高度相干通道。整体电光效率达到19%,与先进半导体激光器相当。与传统的III-V激光泵浦方案相比,该方法支持前所未有的数据速率超过60 Tbit/s的硅光子通信链路,并将相位相关的DSP消耗减少了99.99999%。这项工作为实现可扩展、高性能相干集成光子系统铺平了道路,可能使众多应用受益。

更新日期:2024-09-10
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