基于双环谐振腔耦合波导等离子体诱导透明研究及其应用
Research and application of plasma induced transparency based on double ring resonators coupled waveguides
张兴娇 1李伯勋 2文如泉 1马文科1
作者信息
- 1. 萍乡学院机械电子工程学院,江西萍乡 337055
- 2. 湘潭大学物理与光电工程学院,湖南湘潭 411104
- 折叠
摘要
等离子体诱导透明(plasma induced transparency,PIT)的新颖的光学响应特性,在传感器等应用方面具有独特优势.本文提出由双环谐振腔和直波导耦合集成的光学模型,阐述其多波段PIT效应产生原因,针对该结构利用时域有限差分(finite difference time domain,FDTD)法进行仿真研究,分析了主要结构参数对结构传输特性的影响.研究了环形谐振腔内外半径Rin、Rout和环形谐振腔宽度WR对传输特性红移的影响,发现Rin、Rout过大太小均不利于激发PIT现象.优化参数后设计了灵敏度可达1014.10 nm/RIU,品质因数高达90.65的纳米传感器,具有结构简单、易于集成、制作方便、成本低等优点,能够很好地运用在高度集成、高精度的传感检测领域.
Abstract
Plasma induced transparency(PIT)is a novel optical response characteristic,which has unique advantages in applications such as sensors.In this paper,we present an optical model which is coupled by a double-ring resonator and a straight waveguide,and explain the cause of the multi-band PIT effect.The influence of the main structural parameters on the transmission characteristics of the structure is analyzed by using the finite difference time domain(FDTD)method.The effects of inner and outer radii Rin,Rout and the width WR of ring resonators on the red shift of transmission characteristics are studied.it is found that Rin and Rout are too large and too small to be conducive to the phenomenon of PIT.After optimizing the parameters,a nano-sensor with a sensitivity of 1014.10 nm/RIU and a high quality factor of 90.65 is designed,which has the advantages of simple structure,easy integration,convenient fabrication and low cost,it can be well used in the field of high integration and high precision sensing detection.
关键词
环形谐振腔/等离子体诱导透明(PIT)/传输特性/灵敏度Key words
ring resonator/plasma induced transparency/transmission characteristics/sensitivity引用本文复制引用
基金项目
江西省自然科学基金(20202BABL201021)
江西省教育厅科学技术研究项目(GJJ212714)
萍乡市科技支撑计划项目(2022C0104)
出版年
2024
NETL
NSTL
万方数据