中文摘要：

为发挥长程表面等离子体波共振峰宽度小,共振曲线斜率大,降低共振角位置不确定性的优点,解决其严格对称结构难于传感的问题,文中在理论分析介质-金属薄膜-介质结构模型的色散和反射特性的基础上,实验研究棱镜耦合激发该结构中的修正的长程表面等离子体波用于传感,改变实验中的结构参数,检测含水率10.8%~38.8%的蜂蜜。结果表明：其共振峰宽度变窄,介质膜厚、金属膜厚等参数对衰减峰及其宽度和衰减深度等参量都会产生影响,检测的入射角与折射率的线性相关系数为0.993 2,可较好地实现传感。

英文摘要：

To play to the advantages of long-range surface plasmon wave has the advantages of narrow width of the resonance peak,the greater slope of resonance curve and the reducing of uncertainty of the resonance angular position,solving its problems of the strictly symmetrical structure and it is unsuitable for sensing applications,based on the theory analysis of dispersion and reflection characteristics of media-metal film-media structure,the modified long-range surface plasmon wave was excited by prism coupling method for sensing was studied in experiment.Structure parameters were changed in experiments and the detection of aqueous 10.8% ～ 38.8% of the honey was realized.Results show that the resonance peak width of the long-range surface plasmon wave is much narrower than that of the traditional surface plasmon wave.The characteristics of modified long range surface plasmon wave such as peak attenuation,attenuation peak width and depth attenuation are influenced by changing the thickness of the metal,the thickness of the medium.The detected incident angle is linear to the testing refractive index,and the linear correlation coefficient is 0.993 2,thus it is a good linear correlation and it is suitable for refractive index detecting.