УДК: 535.399

Luminescent fibers with molecular clusters of silver for measuring the refractive index of the ambient medium

Agafonova, D.S., Sidorov, A.I., Ettuvegyrgina, M.G.

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Агафонова Д.С., Сидоров А.И., Эттувэгыргина М.Г. Люминесцентные волокна с молекулярными кластерами серебра для измерения показателя преломления окружающей среды // Оптический журнал. 2015. Т. 82. № 6. С. 66–71.

Agafonova D.S., Sidorov A.I., Ettuvegyrgina M.G. Luminescent fibers with molecular clusters of silver for measuring the refractive index of the ambient medium [in Russian] // Opticheskii Zhurnal. 2015. V. 82. № 6. P. 66–71.

For citation (Journal of Optical Technology):

D. S. Arafonova, A. I. Sidorov, and M. G. Éttuvégyrgina, "Luminescent fibers with molecular clusters of silver for measuring the refractive index of the ambient medium," Journal of Optical Technology. 82(6), 380-384 (2015). https://doi.org/10.1364/JOT.82.000380

Abstract:

The experimental results presented here show that the use of luminescent multimode fibers in sensors of the refractive index of the ambient medium makes it possible to substantially increase their sensitivity to variation of the medium’s refractive index. Experiments have been carried out with fibers made from silicate glass containing luminescent centers in the form of neutral molecular clusters of silver. The sensitivity is increased because more high-order modes are excited when the fiber captures the radiation of luminescent centers in the fiber than when the waveguide modes are excited through the ends of the fiber. The results of numerical modelling show that the sensitivity is appreciably increased for modes with index N≥100.

Keywords:

luminescence, optical fiber, molecular cluster, silver, refractive index sensor

Acknowledgements:

This work was carried out with the financial support of the Russian Scientific Foundation (Contract No. 14-23-00136).

OCIS codes: 160.2540, 160.5690, 280.4788

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