Zhang Yi-long, Liu Le, Guo Jun, Zhang Peng-fei, Guo Ji-hua, Ma Hui, He Yong-hong
Guang Pu Xue Yu Guang Pu Fen Xi. 2015 Feb;35(2):289-92.
Surface plasmon resonance (SPR) sensors with spectral interrogation can adopt fiber to transmit light signals, thus leaving the sensing part separated, which is very convenient for miniaturization, remote-sensing and on-site analysis. Symmetrical optical waveguide (SOW) SPR has the same refractive index of the-two buffer media layers adjacent to the metal film, resulting in longer propagation distance, deeper penetration depth and better performance compared to conventional SPR In the present paper, we developed a symmetrical optical, waveguide (SOW) SPR sensor with wavelength interrogation. In the system, MgF2-Au-MgF2 film was used as SOW module for glucose sensing, and a fiber based light source and detection was used in the spectral interrogation. In the experiment, a refractive index resolution of 2.8 x 10(-7) RIU in fluid protocol was acquired. This technique provides advantages of high resolution and could have potential use in compact design, on-site analysis and remote sensing.
采用光谱检测的表面等离子体共振（SPR）传感器可以利用光纤来传输光信号，从而使传感部分分离，这对于小型化、遥感和现场分析非常方便。对称光波导（SOW）SPR中与金属膜相邻的两个缓冲介质层具有相同的折射率，与传统SPR相比，其传播距离更长、穿透深度更深且性能更好。在本文中，我们开发了一种具有波长检测功能的对称光波导（SOW）SPR传感器。在该系统中，MgF2-Au-MgF2膜被用作葡萄糖传感的SOW模块，并且在光谱检测中使用了基于光纤的光源和检测装置。在实验中，在流体模式下获得了2.8×10（-7）RIU的折射率分辨率。该技术具有高分辨率的优点，并且在紧凑设计、现场分析和遥感方面可能具有潜在用途。
