红外与毫米波学报, 2016, 35 (5): 525, 网络出版: 2016-10-24
太赫兹宽谱聚合物波导及其传感应用
Broadband spectroscopy of polymer waveguide and its sensing applications in the THz region
聚合物波导 光纤传感器 太赫兹光谱 宽谱传输 反谐振原理 polymer fiber optics fiber optics sensors terahertz spectroscopy broadband transmission anti-resonance
摘要
利用太赫兹时域光谱系统对三种反谐振波导的太赫兹谱进行了研究, 这三种波导分别是PMMA管型波导, PMMA自支撑结构波导和SiO2管型波导.该研究验证了三种波导的太赫兹传输基于反谐振理论, 并在实验上实现了PMMA自支撑结构波导超过2 THz的宽光谱传输.同时, 对基于反谐振原理的太赫兹物质传感进行了理论和实验分析, 为物质探测提供了一种可行的手段.
Abstract
A broadband spectroscopy of anti-resonant waveguides in the terahertz region was investigated. The broadband spectral transmission properties of a poly(methylmethacrylate) (PMMA) pipe waveguide, a PMMA self-supporting waveguide, and a SiO2 pipe waveguide were studied using terahertz time domain spectroscopy (THz-TDS). The existence of the anti-resonance phenomenon was demonstrated. Additionally, the PMMA self-supporting waveguide has been experimentally shown to realize transmission bandwidth of over 2 THz without dip frequencies. Also, based on the anti-resonance mechanism, the dielectric pipe waveguide was successfully used as a terahertz refractive index sensor for liquid sensing, which offers a possible method for materials detection.
刘婧, 肖鸣飞, 沈京玲, 张波, 张巍, 张存林. 太赫兹宽谱聚合物波导及其传感应用[J]. 红外与毫米波学报, 2016, 35(5): 525. LIU Jing, XIAO Ming-Fei, SHEN Jing-Ling, ZHANG Bo, ZHANG Wei, ZHANG Cun-Lin. Broadband spectroscopy of polymer waveguide and its sensing applications in the THz region[J]. Journal of Infrared and Millimeter Waves, 2016, 35(5): 525.