光学学报, 2018, 38 (6): 0606001, 网络出版: 2018-07-09
拉锥Ge15Sb20Se65硫系玻璃光纤对乙醇溶液检测的光谱分析研究 下载: 807次
Spectroscopic Analysis of Ethanol Solution Detection with Ge15Sb20Se65 Chalcogenide Glass Tapered Fiber
图 & 表
图 1. 光纤倏逝波原理。 (a)普通光纤; (b)锥形光纤
Fig. 1. Principles of evanescent wave. (a) Normal fiber; (b) tapered fiber
图 2. 硫系拉锥光纤测量乙醇溶液浓度的测量装置原理图
Fig. 2. Experimental setup for ethanol solution detection with chalcogenide tapered fiber
图 3. Ge15Sb20Se65玻璃(厚度为2 mm)的红外透过光谱
Fig. 3. Infrared transmission spectrum of Ge15Sb20Se65 glass (thickness is 2 mm)
图 4. 直径为500 μm的 Ge15Sb20Se65裸玻璃光纤损耗曲线(内插图为光纤端面图)
Fig. 4. Loss of Ge15Sb20Se65 bare glass fiber with a core diameter of 500 μm (The inset is an image of the cross-section of the fiber)
图 5. Ge15Sb20Se65拉锥光纤III的表面相貌图。(a)拉锥渐变区; (b)腰锥区
Fig. 5. Surface images of Ge15Sb20Se65 tapered fiber-III. (a) Tapered transition; (b) taper waist
图 6. 裸光纤及拉锥光纤对不同体积分数的乙醇溶液测量的红外光谱。(a) 未拉锥光纤; (b) 拉锥光纤 I;(c) 拉锥光纤 II; (d) 拉锥光纤III
Fig. 6. IR spectra of bare fiber and tapered fibers for measuring ethanol solution with different volume fractions. (a) Untapered fiber; (b) tapered fiber I; (c) tapered fiber II; (d) tapered fiber III
图 7. 不同拉锥光纤测量不同体积分数的乙醇溶液时在9.53 μm处的光吸收度与浓度关系;(a) 未拉锥光纤;(b) 拉锥光纤 I; (c) 拉锥光纤 II; (d) 拉锥光纤III
Fig. 7. Relationship between absorbance and different volume fractions of ethanol solution at 9.53 μm with bare fiber and tapered fibers. (a) Untapered fiber; (b) tapered fiber I; (c) tapered fiber II; (d) tapered fiber III
图 8. 拉锥光纤III测量低浓度乙醇溶液时在9.53 μm处的光吸收度与浓度关系
Fig. 8. Relationship between absorbance and low volume fraction of ethanol solution at 9.53 μm with tapered fiber III
表 1三种不同锥腰直径的Ge15Sb20Se65拉锥光纤参数
Table1. Parameters of three Ge15Sb20Se65 taper fibers with different taper diameters
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王晓美, 杨晨风, 戴世勋, 王莹莹, 徐栋, 尤晨阳. 拉锥Ge15Sb20Se65硫系玻璃光纤对乙醇溶液检测的光谱分析研究[J]. 光学学报, 2018, 38(6): 0606001. Xiaomei Wang, Chenfeng Yang, Shixun Dai, Yingying Wang, Dong Xu, Chenyang You. Spectroscopic Analysis of Ethanol Solution Detection with Ge15Sb20Se65 Chalcogenide Glass Tapered Fiber[J]. Acta Optica Sinica, 2018, 38(6): 0606001.