芯片上的电光调制器具有超高的灭绝比率,用于光纤分布式声学传感
Zhuo Cheng1, Xiaoqian Shu1, Lingmei Ma1
1Research Center for Optical Fiber Sensing, Zhejiang Laboratory, Hangzhou, 311100, China.
Nature communications
|November 17, 2023
概括
一个新的电光学调制器 (EOM) 为光纤分布式声学传感 (DAS) 提供了超高的灭绝比率. 与传统的声光调制器 (AOM) 相比,这种紧的EOM显著降低了尺寸和功耗.
科学领域:
- 光子学和光学工程 光子学和光学工程
- 集成光学 集成光学 集成光学
- 传感技术 传感技术
背景情况:
- 超高灭绝比 (ER) 的光学调制对于高性能光纤分布式声学传感 (DAS) 是必不可少的.
- 传统的声光调制器 (AOM) 是体积庞大且耗电密集的,限制了紧且节能的DAS系统的发展.
- 对小型化和低功耗光学调制器有实际需求,用于先进的DAS应用.
研究的目的:
- 为了展示一个芯片上的电光学调制器 (EOM),具有超高的灭绝比.
- 显著减少DAS系统中使用的关键调制器的尺寸和功耗.
- 在集成到 DAS 系统时评估芯片上的 EOM 的性能.
主要方法:
- 在芯片上制造一个使用多个合微环的EOM.
- 描述EOM的灭绝率,设备大小和功耗.
- 在光纤分布式声学传感 (DAS) 系统中集成和测试EOM.
主要成果:
- 实现了高达68dB的超高灭绝比 (ER).
- EOM的尺寸为260 × 185μm2,功耗仅为3.6mW.
- 经过证明的DAS性能具有超高灵敏度 (-71.2dB rad2/Hz) 和低空间交叉声噪声 (-68.1dB rad2/Hz),与基于AOM的系统相美.
结论:
- 开发的芯片上的EOM为DAS提供了一个紧而节能的替代传统AOM.
- 这项技术使得超紧的DAS系统具有与现有的庞大解决方案相当的性能.
- 为下一代集成光电子DAS系统铺平了道路,具有大规模生产能力.
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