Optical remote sensing system for hydrocarbon gases using infrared fibers
- 15 January 1988
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 63 (2) , 269-272
- https://doi.org/10.1063/1.340286
Abstract
An infrared optical fiber made of As2S3 glass has been applied for remote sensing of hydrocarbon gases. The fiber has enabled a transmission of the radiation at 3.39‐μm wavelength, where hydrocarbon molecules have strong absorption bands. Using a 3.39‐μm He‐Ne laser as a light source, an effective remote sensing system has been established. A detection limit of the gas concentration is ∼300 ppm for CH4 gas, which is ∼0.6% of the lower explosion limit. The system is also expected as a pressure monitor since it is highly sensitive to the gas pressure.This publication has 7 references indexed in Scilit:
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