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

J4 ›› 2013, Vol. 48 ›› Issue (1): 46-50.

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

罗斯特,卢丽倩,崔若飞,周伟伟,李增勇*

山东大学机械工程学院, 山东济南 250061

收稿日期:2012-05-29 出版日期:2013-01-20 发布日期:2013-01-15
通讯作者: 李增勇(1970- ),男,副教授,主要研究方向为人机工程,生物医学光子学. Email: zyongli@sdu.edu.cn
作者简介:罗斯特(1987- ),男,硕士研究生,主要研究方向为生物医学光子学. Email: lost147258@163.com
基金资助:
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)

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

LUO Si-te, LU Li-qian, CUI Ruo-fei, ZHOU Wei-wei, LI Zeng-yong*

School of Mechanical Engineering, Shandong University, Jinan 250061, China

Received:2012-05-29 Online:2013-01-20 Published:2013-01-15

摘要/Abstract

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(1694nm、1735nm、2266nm、2308nm)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:1694nm、1735nm波长光子的最佳检测半径为650μm,2266nm、2308nm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。

关键词: 蒙特卡罗;酒精;近红外;光子传输;光纤探头

Abstract:

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 parameter was determined at alcohol wavelength (1694nm, 1735nm, 2266nm, 2308nm). The Monte-Carlo simulations results showed that the optimal detection distance was 650μm at 1694nm and 1735nm, 450μm at 2266nm and 2308nm. The photons densities showed a decline trend with the increase of detection distance r in the range from 200μm to 1000μm. 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.

Key words: Monte Carlo; alcohol; near-infrared; photon transmission; fiber optic probe

罗斯特,卢丽倩,崔若飞,周伟伟,李增勇*. 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[J]. J4, 2013, 48(1): 46-50.

LUO Si-te, LU Li-qian, CUI Ruo-fei, ZHOU Wei-wei, LI Zeng-yong*. Monte-Carlo simulation of photons transmission at alcohol wavelength in skin tissue and design of fiber optic probe[J]. J4, 2013, 48(1): 46-50.

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