Metal-Insulator-Metal Waveguide-Based Racetrack Integrated Circular Cavity for Refractive Index Sensing Application

被引：33
作者：
Butt, Muhammad A. [1 ,2 ]
Kazmierczak, Andrzej [2 ]
Kazanskiy, Nikolay L. [1 ,3 ]
Khonina, Svetlana N. [1 ,3 ]
机构：
[1] Samara Natl Res Univ, Samara 443086, Russia
[2] Warsaw Univ Technol, Inst Microelect & Optoelect, Koszykowa 75, PL-00662 Warsaw, Poland
[3] RAS, Inst RAS Branch FSRC Crystallog & Photon, Samara 443001, Russia
来源：
ELECTRONICS | 2021年 / 10卷 / 12期
关键词：
plasmonics; metal-insulator-metal waveguide; refractive index sensor; biosensing; PLASMONIC SENSOR; RING-RESONATOR; FANO RESONANCE; NANODOTS;
D O I：
10.3390/electronics10121419
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Herein, a novel cavity design of racetrack integrated circular cavity established on metal-insulator-metal (MIM) waveguide is suggested for refractive index sensing application. Over the past few years, we have witnessed several unique cavity designs to improve the sensing performance of the plasmonic sensors created on the MIM waveguide. The optimized cavity design can provide the best sensing performance. In this work, we have numerically analyzed the device design by utilizing the finite element method (FEM). The small variations in the geometric parameter of the device can bring a significant shift in the sensitivity and the figure of merit (FOM) of the device. The best sensitivity and FOM of the anticipated device are 1400 nm/RIU and similar to 12.01, respectively. We believe that the sensor design analyzed in this work can be utilized in the on-chip detection of biochemical analytes.
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页数：12
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