Measurement of the intensity profile of the high-power laser radiation using the matrix of the copper-coated optical fibers

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.

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Dependence of optical attenuation on radiation wavelength and waveguide geometry in copper-coated optical fibers

Cherpak

Shaidullin

Ryabushkin

2020

EPJ Web Conf.

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Measurement of the intensity profile of the high-power laser radiation using the matrix of the copper-coated optical fibers

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Dependence of optical attenuation on radiation wavelength and waveguide geometry in copper-coated optical fibers

Dependence of optical attenuation on radiation wavelength and waveguide geometry in copper-coated optical fibers

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