High-sensitive symmetric Fano optical cavity sensor for refractive index detection based on photonic crystal structure

被引：1
作者：
Rezaei, M. H. [1 ]
Yavari, M. H. [1 ]
机构：
[1] Shahed Univ, Fac Engn, Tehran, Iran
来源：
2021 29TH IRANIAN CONFERENCE ON ELECTRICAL ENGINEERING (ICEE) | 2021年
关键词：
optical sensor; Fano resonance; refractive index sensor; photonic crystal sensor; LABEL-FREE DETECTION; RESONANCE; STACK; SLAB;
D O I：
10.1109/ICEE52715.2021.9544343
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We have designed a high-sensitivity and high-quality factor (Q) photonic crystal (PhC) Fano sensor. By engineering of Fano cavity within a typical Fano structure, the light modes penetrated into the low index medium of the Fano cavity and the sensitivity as well as Q is increased. The transmission spectra of the presented sensor are numerically simulated using FDTD and the theoretical model of the structure is investigated. A sensitivity and Q of 528 nm/RIU and 3 x 10(4) have been demonstrated, respectively. To the best of our knowledge, this is the first device with figure of merit (FOM) of 1820 that shows high sensitivity and ultra-high Q simultaneously, while using Fano resonance in output.
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页码：18 / 22
页数：5
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