CAJ | 학술논문

表面等离子体共振（SPR）传感系统有角度谱、光谱、强度、相位等解调方式，其中光谱型的（SPR）传感系统因可以使用光纤导光，将传感部分独立出来，可进行远距离传感和现场检测，并能有效缩小系统的体积。对称光波导型（SOW）SPR因金属膜层两边的折射率完全相同，表面等离子体波传播距离更长，穿透深度更深，比传统的SPR系统具有更高的灵敏度和分辨率。对对称波导型（SOW）SPR 进行光谱解调研究，以 MgF2-Au-MgF2结构的SOW-SPR为传感单元，同时以光纤输出的卤素灯为光源，搭建了一套光谱解调的SOW-SPR检测系统，以不同浓度的葡萄糖溶液对系统折射率分辨率进行测量，得到2．8×10－7 RIU的分辨率。为SOW-SPR系统小型化、现场检测以及远距离探测提出一种可能实现的手段，具有很好的应用前景。
표면등리자체공진（SPR）전감계통유각도보、광보、강도、상위등해조방식，기중광보형적（SPR）전감계통인가이사용광섬도광，장전감부분독립출래，가진행원거리전감화현장검측，병능유효축소계통적체적。대칭광파도형（SOW）SPR인금속막층량변적절사솔완전상동，표면등리자체파전파거리경장，천투심도경심，비전통적SPR계통구유경고적령민도화분변솔。대대칭파도형（SOW）SPR 진행광보해조연구，이 MgF2-Au-MgF2결구적SOW-SPR위전감단원，동시이광섬수출적서소등위광원，탑건료일투광보해조적SOW-SPR검측계통，이불동농도적포도당용액대계통절사솔분변솔진행측량，득도2．8×10－7 RIU적분변솔。위SOW-SPR계통소형화、현장검측이급원거리탐측제출일충가능실현적수단，구유흔호적응용전경。
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.Symmetri-cal optical waveguide (SOW)SPR has the same refractive index of the two buffer media layers adjacent to the metal film,resul-ting in longer propagation distance,deeper penetration depth and better performance compared to conventional SPR.In the pres-ent 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. 8×10-7 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.