Study of C<sub>2</sub>H<sub>2</sub> optic-fiber monitoring system on spectrum absorption

Yutian Wang; Xiao-Xin Li; Zhong-Dong Wang

doi:10.1117/12.570551

14 February 2005 Study of C₂H₂ optic-fiber monitoring system on spectrum absorption

Yutian Wang, Xiao-Xin Li, Zhong-Dong Wang

Proceedings Volume 5634, Advanced Sensor Systems and Applications II; (2005) https://doi.org/10.1117/12.570551
Event: Photonics Asia, 2004, Beijing, China

Abstract

We report our research on the development of optical fiber trace gas sensors for environmental applications. A novel optical fiber sensor for monitoring acetylene (C2H2) gases is described. Through studying the measure theory, we use the Beer-Lambert law to monitor the gas. And after analyzing the C2H2 spectrum, we select Distributed Feedback Laser Diode (DFB LD) as light source. Comparing many kinds’ sensor detection head, the gas absorbing cell with tail fiber can have good coupling with optical fiber and improve the coupling stability. In the data processing system, signals are distilled by lock-in amplifiers and then harmonic measure technology processes that distilled faint signals. After the all, the electronic signals are transmitted into computer to process, alarm and display. We design the instrument who can remote and on-line measuring acetylene. Through theory analysis and system experiment, the design of the system is practicable, and has a better precision and some apply foreground.

Citation Download Citation

Yutian Wang, Xiao-Xin Li, and Zhong-Dong Wang "Study of C₂H₂ optic-fiber monitoring system on spectrum absorption", Proc. SPIE 5634, Advanced Sensor Systems and Applications II, (14 February 2005); https://doi.org/10.1117/12.570551

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