在微环谐振器耦合马赫-曾德尔干涉仪中实现具有高斜率率的可调谐 Fano 共振。

Tunable Fano resonance with a high slope rate in a microring-resonator-coupled Mach-Zehnder interferometer.

出版信息

Opt Lett. 2019 Jan 15;44(2):251-254. doi: 10.1364/OL.44.000251.

DOI:10.1364/OL.44.000251

Abstract

Fano resonance has important applications in high-sensitivity sensing, optical switching, and modulating. A tunable Fano resonance with a high extinction ratio (ER) and slope rate (SR) is in great demand. Here we demonstrate Fano resonance in a microring-resonator-coupled Mach-Zehnder interferometer that is fabricated in silicon-on-insulator. The SR and resonant wavelength of the Fano resonance can be electrically and independently tuned. In the experiment, the Fano resonance shows a maximal ER of 56.8 dB and a maximal SR of 3388.1 dB/nm. The SR and resonant wavelength also can be tuned from 870.06 to 3388.1 dB/nm, and 1558.73 to 1559.96 nm, respectively.

摘要

法诺共振在高灵敏度传感、光开关和调制等方面有重要应用。具有高消光比（ER）和斜率率（SR）的可调谐法诺共振是非常需要的。在这里，我们在硅异质结构上制作的微环谐振器耦合马赫-曾德尔干涉仪中演示了法诺共振。法诺共振的 SR 和共振波长可以进行电独立调节。在实验中，法诺共振表现出最大 ER 为 56.8 dB 和最大 SR 为 3388.1 dB/nm。SR 和共振波长也可以分别从 870.06 到 3388.1 dB/nm 和 1558.73 到 1559.96 nm 进行调谐。