Mendoza-Castro Jesus Hernan, Vorobev Artem S, Iadanza Simone, Lendl Bernhard, O'Faolain Liam, Grande Marco
Opt Express. 2024 Apr 8;32(8):13197-13207. doi: 10.1364/OE.504912.
Silicon-based Micro Ring Resonators (MRR) are a powerful tool for the realization of label free optical biosensors. The sharp edge of a Fano resonance in a Silicon Nitride (SiN) platform can boost photonic sensing applications based on MRRs. In this work, we demonstrate enhanced Fano resonance features for a SiN Micro Ring Resonator assisted by a Photonic Crystal Nanobeam (PhCN-MRR) operating in the TM-like mode at the O-band wavelengths. Our findings show that the fabricated PhCN-MRR results in increased asymmetric resonances for TM-like mode compared with TE-like mode operation in the C-band. As a result, a versatile and flexible design to realize Fano resonance with polarization dependent asymmetry in the C and O telecom bands is presented.
基于硅的微环谐振器（MRR）是实现无标记光学生物传感器的有力工具。氮化硅（SiN）平台中Fano共振的尖锐边缘可以推动基于MRR的光子传感应用。在这项工作中，我们展示了在O波段波长下以类TM模式运行的光子晶体纳米光束辅助的SiN微环谐振器（PhCN-MRR）增强的Fano共振特性。我们的研究结果表明，与C波段的类TE模式运行相比，制造的PhCN-MRR在类TM模式下导致不对称共振增加。因此，提出了一种在C和O电信波段实现具有偏振依赖性不对称的Fano共振的通用且灵活的设计。
