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- W2081695255 abstract "A fiber optic multisensor methane detection system matched to topology and environment of a coal mine is reported. The system involves time domain multiplexed (TDM) methane sensors based on selective absorption of source radiation by atomic or molecular species in the gas sensing heads. A two-wavelength ratiometric approach allows simple self referencing, cancels out errors arising from other contaminants, and improves the measurement contrast. The laboratory system consists of a high radiance LED source, multimode fiber, optical sensing head, optical bandpass filters, and involves synchronous detection with low noise photodiodes and a lock-in amplifier. Detection sensitivity upon spectral resolution of the optical filters has also been investigated and described. The system performance was evaluated and the results are presented." @default.
- W2081695255 created "2016-06-24" @default.
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- W2081695255 date "1989-04-26" @default.
- W2081695255 modified "2023-09-23" @default.
- W2081695255 title "Self Referenced Fiber Optic Methane Detection System" @default.
- W2081695255 doi "https://doi.org/10.1117/12.960044" @default.
- W2081695255 hasPublicationYear "1989" @default.
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