Design of an optical sensor array for hydrocarbon monitoring

被引:8
作者
Prudenzano, F. [1 ]
Mescia, L. [2 ]
Allegretti, L. A. [1 ]
Calo, G. [2 ]
D'Orazio, A. [2 ]
De Sario, M. [2 ]
Palmisano, T. [1 ]
Petruzzelli, V. [2 ]
机构
[1] Politecn Bari, DIASS, I-74100 Taranto, Italy
[2] Politecn Bari, DEE, I-70125 Bari, Italy
关键词
Optical sensor; Sensor array; Integrated optics; Hydrocarbon; HOLLOW WAVE-GUIDES; AROMATIC-HYDROCARBONS; INTERFEROMETER; PERFORMANCE;
D O I
10.1007/s11082-009-9322-1
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Evanescent field optical sensors are accurately designed for hydrocarbon monitoring in water. Various kinds of waveguide sensors are optimized by considering a polydimethylsiloxane polymeric overlay as sensor region. The simulation results suggest that the selection of a suitable waveguide cross section can enhance the sensor performance. In particular, the hollow waveguide sensor exhibits very intriguing performance, the absorbance being quite linear with respect to the contaminant concentration. For the toluene pollution the absorbance exhibits a slope S-TE(A) = 2.52 x 10(-2) ppm(-1) for a waveguide reference length L = 1.18 mm. In order to simultaneously detect different pollutants in water such as toluene, benzene, chlorobenzene and ethilbenzene, an array of four miniaturized hollow waveguide sensors is designed.
引用
收藏
页码:55 / 68
页数:14
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