Data from: Modelling and simulation of thermally-induced optical transparency in a dual-microring resonator

This paper introduces the simulation and modelling of a novel dual micro-ring resonator. The geometric configuration of the resonators, and the implementation of a simulated broadband excitation source, results in the realization of optical transparencies in the combined through port output spectrum. The 130nm silicon on insulator rib fabrication process is adopted for the simulation of the dual ring configuration. Two titanium nitride heaters are positioned over the coupling regions of the resonators, which can be operated independently, to control the spectral position of the optical transparency. A third heater, centrally located above the dual resonator rings, can be used to red shift the entire spectrum to a required reference resonant wavelength. The free spectral range with no heater currents applied is 4.29nm. For a simulated heater current of 7mA (55.7mW heater power) applied to one of the through coupling heaters, the optical transparency exhibits a red shift of 1.79nm from the reference resonant wavelength. The ring to ring separation of approximately 900nm means that it can be assumed that there is a zero ring to ring coupling field in this model. This novel arrangement has potential applications as a gas mass airflow sensor or a gas species identification sensor.本文介绍了一款新型双微环谐振器（dual micro-ring resonator）的仿真与建模研究。通过优化谐振器的几何构型并引入仿真宽带激励源，该结构可在组合直通端口的输出光谱中实现光学透明窗口。针对该双环谐振结构的仿真，采用了130nm绝缘体上硅（silicon on insulator）脊形波导制备工艺。在谐振器的耦合区域上方设置了两个氮化钛加热器（titanium nitride heaters），二者可独立调控，用于精准控制光学透明窗口的光谱位置。在双谐振环的中心上方还增设了第三个加热器，可将整个光谱红移至指定的参考谐振波长。未施加加热器电流时，器件的自由光谱范围（free spectral range）为4.29nm。当向其中一个直通耦合加热器施加7mA的仿真加热电流（对应加热功率为55.7mW）时，光学透明窗口相较于参考谐振波长发生了1.79nm的红移。双环间距约为900nm，因此本模型中可假定环间耦合场为零。该新型结构在气体质量流量传感或气体种类识别传感领域具备潜在应用价值。