Multi-band sensing characteristics of optical waveguide based on gold nanoparticles arrays

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Wu, Yang Sheng^1 ; Liu, Yu^1

School of Electronic Information Engineering, Anhui University, Hefei, Anhui

230601, China^1

关键词: Hybrid waveguides;    Localized surface plasmon;    Multiple resonances;    Optical waveguide theory;    Planar optical waveguides;    Refractive index sensing;    Sensing characteristics;    Transmission spectrums;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/2/022018/pdf
DOI  :  10.1088/1757-899X/382/2/022018

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

According to the optical waveguide theory, a hybrid waveguide-plasmon system consisting of gold nanoparticles arrays on top of a planar optical waveguide structure is proposed. Due to the interactions between the LSPs (Localized Surface Plasmons) and the waveguide modes, the transmission spectra generates multiple resonance peak. Based on this fact, the refractive index sensing characteristics of the array structure are analyzed. The full width at half maximum of the transmission spectra is very narrow, so the structure has excellent sensitivity and a high figure of merit.