https://doi.org/10.1051/epjconf/202023811013
Dependence of optical attenuation on radiation wavelength and waveguide geometry in copper-coated optical fibers
1 Moscow Institute of Physics and Technology, Institutsky lane 9, Dolgoprudny, Moscow region, 141700, Russia
2 Fryazino branch of Kotelnikov Institute of Radioengineering and Electronics of RAS, Fryazino, Moscow region, 141190 Russia
* Corresponding author: cherpak.ps@phystech.edu
Published online: 20 August 2020
We demonstrate a novel approach to the determination of optical loss coefficients in metal-coated fibers in a 0.4-1.9 μm wavelength range. It is based on measuring the change of temperature-dependent electrical resistance of the metal coating caused by laser radiation transmitted through the fiber. A number of single-mode and multimode metallized fibers were investigated using several laser sources operating in visible and near infrared ranges. The spectral dependencies of optical losses of copper-coated fibers were experimentally obtained. The region that corresponds to the minimum optical losses is located near 1 μm wavelength. The increase of radiation losses in 1.5-1.9 μm region is much steeper compared to polymer-coated fibers.
© The Authors, published by EDP Sciences, 2020
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