Monte-Carlo仿真酒精特征波长光子在皮肤中的传输规律及光纤探头设计  

Monte-Carlo simulation of photons transmission at alcohol wavelength in skin tissue and design of fiber optic probe

作　　者：罗斯特[1] 卢丽倩[1] 崔若飞[1] 周伟伟[1] 李增勇[1] 

机构地区：[1]山东大学机械工程学院,山东济南250061

出　　处：《山东大学学报（理学版）》2013年第1期46-50,共5页Journal of Shandong University(Natural Science)

基　　金：国家自然科学基金资助项目(30870652;81071223);山东省自然科学基金资助项目(ZR2010HM024);山东大学2010年自主创新基金自然科学类资助专项(2010JQ007)

摘　　要：用蒙特卡罗(Monte-Carlo)方法研究酒精特征波长的光子在皮肤组织中的传输规律,从而确定酒精光谱的最佳检测距离,为应用近红外光谱进行人体酒精无创检测提供理论依据。通过建立皮肤4层结构模型,确定了在酒精特征波长(1 694 nm、1 735 nm、2 266 nm、2 308 nm)下该模型的光学参数。利用Monte-Carlo方法对该模型仿真可得到结论:1 694 nm、1 735 nm波长光子的最佳检测半径为650μm,2 266 nm、2 308 nm波长光子的最佳检测半径为450μm;半径在200～1000μm之间时,出射点的光子密度随检测半径的增加呈幂函数形式递减,检测到的光子数随检测宽度的增加大致呈线性递增。利用上述结果,设计了用于人体酒精无创检测的光纤探头,选用TE制冷型的InGaAs检测器作为光子检测器。The transmission characteristics of photons in the skin tissue at alcohol wavelength were studied by using Monte-Carlo simulation method in this study. A four-layer skin structure model was established in which the optical pa- rameter was determined at alcohol wavelength （ 1 694 nm, 1735 nm, 2 266 nm, 2 308 nm）. The Monte-Carlo simula- tions results showed that the optimal detection distance was 650 μm at 1 694 nm and l 735 nm, 450 μm at 2 266 nm and 2 308 rim. The photons densities showed a decline trend with the increase of detection distance r in the range from 200 μm to l 000 μm. The number of detected photons increases linearly with the detection width. Based on the above results, an optical fiber probe for alcohol non-invasive testing was designed, and the TE-cooled InGaAs detector was optimized.

关 键 词：蒙特卡罗 酒精 近红外 光子传输 光纤探头 

分 类 号：TN215[电子电信—物理电子学] R138.51[医药卫生—劳动卫生]