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Modelling and simulation of a thermally induced optical transparency in a dual micro-ring resonator

机译：双微环谐振器中热诱导光学透明性的建模和仿真

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摘要

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 130?nm 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 4.29?nm. For a simulated heater current of 7?mA (55.7?mW heater power) applied to one of the through coupling heaters, the optical transparency exhibits a red shift of 1.79?nm from the reference resonant wavelength. The ring-to-ring separation of approximately 900?nm 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.
机译：本文介绍了新型双微环谐振器的仿真和建模。谐振器的几何配置以及模拟宽带激励源的实现，导致在组合的端口输出频谱中实现了光学透明性。采用130？nm的绝缘体上硅制造工艺来模拟双环结构。在谐振器的耦合区域上放置了两个氮化钛加热器，它们可以独立运行，以控制光学透明性的光谱位置。位于双谐振器环上方中央的第三个加热器可用于将整个光谱红移到所需的参考谐振波长。没有施加加热器电流的自由光谱范围为4.29？nm。对于施加到一个直通耦合加热器之一的7？mA模拟加热器电流（55.7？mW加热器功率），光学透明性与参考谐振波长之间存在1.79？nm的红移。环与环之间的距离约为900？nm，这意味着可以假定该模型中的环与环耦合场为零。这种新颖的装置作为气体质量流量传感器或气体种类识别传感器具有潜在的应用。

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