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 SM ISO690:2012CULEAC, Ion, NISTOR, Yu., YOVU, M., ANDRIESH, Andrei. Speckle based fiber optic method for registration of IR radiation. In: Proceedings of SPIE - The International Society for Optical Engineering, Ed. 9, 31 august - 3 septembrie 2009, Sibiu. Bellingham, Washington: SPIE, 2010, Ediţia 9, Vol.7469, pp. 1-7. ISBN 9780819477590 . ISSN 0277-786X. DOI: https://doi.org/10.1117/12.862384 |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
 Proceedings of SPIE - The International Society for Optical Engineering Ediţia 9, Vol.7469, 2010 |
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Conferința " Optics: Micro- to Nanophotonics" 9, Sibiu, Romania, 31 august - 3 septembrie 2009 | ||||||
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| DOI:https://doi.org/10.1117/12.862384 | ||||||
| Pag. 1-7 | ||||||
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A high sensitivity speckle based fiber-optic method for registration of low intensity IR radiation is proposed. The method is based on the effect of variation of the speckle pattern in the far-field of a multimode fiber. IR radiation that falls on a lateral surface of the fiber leads to variation of the speckle image. Computer processing of the speckle image provides information on the amplitude of the perturbation that hits the fiber. An algorithm has been developed for processing of the speckle image and determining of the intensity of IR radiation. The results of computer simulation correlate sufficiently well with experimental ones. |
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| Cuvinte-cheie CCD, IR radiation, modal interference, multimode fiber, speckle pattern |
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