Fallahi Vahid, Kordrostami Zoheir, Hosseini Mehdi
Department of Electrical and Electronic Engineering, and Research Center for Design and Fabrication of Advanced Electronic Devices, Shiraz University of Technology, Shiraz, Iran.
Physics Department, Shiraz University of Technology, Shiraz, Iran.
Sci Rep. 2024 Jan 23;14(1):2001. doi: 10.1038/s41598-024-52363-2.
In this work, the process of designing and simulating optical sensors based on photonic crystal (PC) micro-ring resonators (MRRs) has been investigated. According to the PC type, different waveguides and resonators can be designed, and various topologies can be proposed from their combination, for optical sensor applications. Here, the investigated MRR is of the symmetrical micro-hexagonal ring resonator (MHRR) type. Different arrays of MHRR arrangement have been designed to investigate their effects on the output spectrum. The results of the design and simulation of different topologies have been analyzed and compared with other numerical researches. Considering all the necessary aspects of PC optical sensors, a detailed and comprehensive algorithm has been presented for designing these devices and choosing the optimal structure. In a more complementary process, the effects of reflector rods have been investigated, which indicates the existence of similarity and compatibility in the design between the distance of reflector rods and the length of MHRRs to obtain the optimal structure. Finally, the effect of different values of lattice constant and radius of dielectric rods on FWHM, transmission (TR) and resonant wavelength is studied, and the most optimal mode is presented. In order to measure the performance of the proposed optimal sensor, its application for gas detection has been analyzed. TR, FWHM, quality factor (QF), sensitivity (S) and figure of merit (FOM) of the proposed sensor were equal to 96%, 0.31 nm, 2636, 6451 nm/RIU and 2960 RIU respectively. An examination of results from similar research indicates a rational and effective approach for generating diverse topologies, aiming to attain the most optimal configuration for optical sensors employing MRRs. Furthermore, employing a systematic design process based on established principles and the proposed algorithm helps prevent arbitrary parameter variations, facilitating the attainment of desired outcomes in a more streamlined and efficient manner. Given the comprehensive nature of this research, it presents a viable solution for designing optical devices based on MRRs for use in optical integrated circuits (OICs) applications.
在这项工作中，对基于光子晶体（PC）微环谐振器（MRR）设计和模拟光学传感器的过程进行了研究。根据光子晶体类型，可以设计不同的波导和谐振器，并通过它们的组合提出各种拓扑结构，用于光学传感器应用。这里，所研究的MRR是对称微六边形环谐振器（MHRR）类型。设计了不同的MHRR排列阵列，以研究它们对输出光谱的影响。分析了不同拓扑结构的设计和模拟结果，并与其他数值研究进行了比较。考虑到PC光学传感器的所有必要方面，提出了一种详细且全面的算法，用于设计这些器件并选择最佳结构。在一个更具互补性的过程中，研究了反射杆的影响，这表明在设计中反射杆的间距与MHRR的长度之间存在相似性和兼容性，以获得最佳结构。最后，研究了晶格常数和介质棒半径的不同值对半高宽（FWHM）、透射率（TR）和谐振波长的影响，并给出了最优模式。为了测量所提出的最优传感器的性能，分析了其在气体检测中的应用。所提出传感器的TR、FWHM、品质因数（QF）、灵敏度（S）和品质因数（FOM）分别为96%、0.31 nm、2636、6451 nm/RIU和2960 RIU。对类似研究结果的考察表明，这是一种合理有效的方法，用于生成各种拓扑结构，旨在为采用MRR的光学传感器获得最优配置。此外，采用基于既定原则和所提出算法的系统设计过程有助于防止任意参数变化，以更简化和高效的方式促进实现预期结果。鉴于这项研究的全面性，它为基于MRR设计用于光集成电路（OIC）应用的光学器件提供了一个可行的解决方案。
