Dr. Julianna A. Novikova Profile

Dr. Julianna A. Novikova

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Proceedings Article | 1 April 2020 Paper

The multichannel optical spectrometer for combustion processes control

Mikhail Vaganov, Vasily Kazakov, Yulianna Novikova

Proceedings Volume 11352, 1135218 (2020) https://doi.org/10.1117/12.2555078

KEYWORDS: Combustion, Process control, Spectroscopy, Optical filters, Control systems, Spectroscopes, Copper, Optical fibers

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Subject of the present paper is the application of a multichannel optical spectrometer performing spectral measurements in specified areas of the optical range using a set of narrow-band interference optical filters that are tuned to certain wavelengths. A special construction principle of the developed spectral-selective device allows to the transmission of the analyzed radiation through not only one optical fiber, but a bundle of fibers, which increases the sensitivity of the device without compromising its resolution. Tasks of monitoring and controlling the combustion processes and the prospects of using non-contact optical spectroscopy for their solution are considered. Results of the analysis of informative features in the radiation spectrum of various combustion processes are presented. Recommendations are given both on the choice of materials for infrared and visible filters, and on the parameters of the primary geometric structure that is used for the synthetization. A technique for the evaluation of the manufacturing quality or of the results of the filter structure design is proposed. A visible range filter based on a combination of zirconium oxide and silicon oxide layers has been developed. The results of the influence analysis of the layers number on obtaining the required spectral characteristics are presented.

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