Sun Chunlei, Wei Maoliang, Tang Bo, Ma Hui, Zhang Peng, Luo Ye, Jian Jialing, Li Lan, Lin Hongtao
Opt Lett. 2022 Jun 1;47(11):2758-2761. doi: 10.1364/OL.453786.
The 2-µm wave band has attracted significant research interest due to its potential applications for next-generation high-capacity optical communication and sensing. As the key component, fast optical switches are essential for an advanced and reconfigurable optical network. Motivated by this prospect, we propose and demonstrate two typical silicon PIN diode switches at 2 µm. One is based on a coupled microring resonator (CMRR), and the other is based on a Mach-Zehnder interferometer (MZI) with a push-pull-like configuration. The measured insertion loss of the CMRR switch is <2.5 dB, and the cross talk is <-10.8 dB. The insertion loss of the MZI switch is <2 dB, and the cross talk is <-15.6 dB. The switch times of these two structures are both lower than 12.5 ns.
由于2微米波段在下一代高容量光通信和传感方面的潜在应用，它已经引起了广泛的研究兴趣。作为关键组件，快速光开关对于先进的可重构光网络至关重要。受此前景的激励，我们提出并展示了两款工作在2微米波段的典型硅PIN二极管开关。一款基于耦合微环谐振器（CMRR），另一款基于具有推挽式结构的马赫曾德尔干涉仪（MZI）。测量得到CMRR开关的插入损耗小于2.5分贝，串扰小于-10.8分贝。MZI开关的插入损耗小于2分贝，串扰小于-15.6分贝。这两种结构的开关时间均低于12.5纳秒。
