Fiber optic chemical sensing

Gary Pickrell; Wei Peng; Bassam Alfeeli; Anbo Wang

doi:10.1117/12.634338

5 November 2005 Fiber optic chemical sensing

Gary Pickrell, Wei Peng, Bassam Alfeeli, Anbo Wang

Proceedings Volume 5998, Sensors for Harsh Environments II; 59980D (2005) https://doi.org/10.1117/12.634338
Event: Optics East 2005, 2005, Boston, MA, United States

Abstract

Monitoring of chemical species is important to a number of industrial and energy related industries. This paper presents a comparison of two fiber optic sensing schemes which are demonstrated for the detection of acetylene and carbon monoxide. The first sensor configuration utilizes the newly developed random hole optical fiber and detects gases entering into the holes in the fiber through the interaction with the evanescent field. The second scheme utilizes a hollow micro-capillary tube based fiber optic sensor system. In both systems, the detection of the chemical species is accomplished by analysis of the infrared absorption spectra produced by the species present in the path of the optical signal. The effect of varying pressure, micro-capillary tube diameter, capillary tube length, and gas species is presented.

Citation Download Citation

Gary Pickrell, Wei Peng, Bassam Alfeeli, and Anbo Wang "Fiber optic chemical sensing", Proc. SPIE 5998, Sensors for Harsh Environments II, 59980D (5 November 2005); https://doi.org/10.1117/12.634338

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