A 2D photonic crystal (PC) sensor based on optical filter has been designed using a PC ring resonator (PCRR). The sensor used a 2D-PCRR triangular lattice with circular silicon rods placed in air background. We employed a ring resonator with Z-shaped core in the investigated structure, which is designed as temperature sensor and investigated theoretically along with high quality factor, transmission and sensitivity parameters. For sensing analysis, the 2D finite-difference time-domain method and the plane-wave expansion approach have been applied. A temperature variation from 0 to 20 °C causes a defect mode shifting and the channel filter wavelength shift was used as sensing mechanism. Using the number of the functionalized rods N = 36 at the temperature of 5 °C, the quality factor, the temperature sensitivity, the refractive index sensitivity and the detection limit of the studied structure were found to be 57,104, 96 pm/°C, 400 nm/RIU and 6.16 × 10 –6 RIU, respectively.

中文翻译：

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基于Z形环形谐振腔的光子晶体温度传感器分析

已经使用 PC 环形谐振器 (PCRR) 设计了基于光学滤波器的 2D 光子晶体 (PC) 传感器。该传感器使用 2D-PCRR 三角形晶格，圆形硅棒放置在空气背景中。我们在研究的结构中采用了具有 Z 形核心的环形谐振器，将其设计为温度传感器，并在理论上研究了高品质因数、传输和灵敏度参数。对于传感分析，已应用二维有限差分时域方法和平面波扩展方法。从 0 到 20 °C 的温度变化会导致缺陷模式偏移，并且通道滤波器波长偏移被用作传感机制。在 5°C 的温度下使用功能化棒的数量 N = 36，品质因数，温度敏感性，