Propagation of evanescent waves in multimode chalcogenide fiber immersed in an aqueous acetone solution: theory and experiment

S. V. Korsakova; E. A. Romanova; A. P. Velmuzhov; T. V. Kotereva; M. V. Sukhanov; V. S. Shiryaev

doi:10.1117/12.2268738

14 April 2017 Propagation of evanescent waves in multimode chalcogenide fiber immersed in an aqueous acetone solution: theory and experiment

S. V. Korsakova, E. A. Romanova, A. P. Velmuzhov, T. V. Kotereva, M. V. Sukhanov, V. S. Shiryaev

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Proceedings Volume 10337, Saratov Fall Meeting 2016: Laser Physics and Photonics XVII; and Computational Biophysics and Analysis of Biomedical Data III; 103370O (2017) https://doi.org/10.1117/12.2268738
Event: Saratov Fall Meeting 2016: Fourth International Symposium on Optics and Biophotonics, 2016, Saratov, Russian Federation

Abstract

Chalcogenide fibers are considered as a base for creation of a fiber-optical platform for the mid-IR evanescent wave spectroscopy. In this work, transmittance of a multimode fiber made of Ge₂₆As₁₇Se₂₅Te₃₂ glass, immersed into an aqueous acetone solution was measured in the range of wavelengths 5 - 9 microns at various concentrations of the solution. A theoretical approach based on electromagnetic theory of optical fibers has been applied for analysis of evanescent modes propagation in the fiber. Attenuation coefficients calculated for each HE_1m evanescent mode increase with the mode radial order m. This effect can be used for optimisation of the fiber-optic sensing elements for the mid-IR spectroscopy.

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S. V. Korsakova, E. A. Romanova, A. P. Velmuzhov, T. V. Kotereva, M. V. Sukhanov, and V. S. Shiryaev "Propagation of evanescent waves in multimode chalcogenide fiber immersed in an aqueous acetone solution: theory and experiment", Proc. SPIE 10337, Saratov Fall Meeting 2016: Laser Physics and Photonics XVII; and Computational Biophysics and Analysis of Biomedical Data III, 103370O (14 April 2017); https://doi.org/10.1117/12.2268738

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KEYWORDS

Absorption

Germanium

Radio propagation

Selenium

Signal attenuation

Spectroscopy

Tellurium

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