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Measurement of optical losses of metal-coated optical fibers at different wavelengths
Author(s): Pavel Cherpak; Ivanov Grigorii; Nikolay Vanyushkin; Renat Shaidullin; Oleg Ryabushkin
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Paper Abstract

A novel method for high-sensitive measurements of optical attenuation in metal-coated optical fibers in a wide range of wavelengths is demonstrated. Some part of the radiation transmitted through the waveguiding core of the metallized silica fiber is scattered and eventually absorbed in the carbon layer or the metal coating, thus heating it. Absorption in the silica core also contributes to the overall fiber heating. The method used for determination of optical attenuation coefficients of metallized fibers is based on the measurement of the change of temperature-dependent electrical resistance of metal coating induced by transmitted laser radiation. A number of single-mode and multimode metallized fibers with different geometry were investigated using several laser sources operating in visible and near infrared ranges. Experimentally obtained spectral dependence of optical losses of copper-coated fibers was analyzed. Possible explanations for optical attenuation mechanisms at different wavelengths and in different fibers were proposed. The obtained results can help to optimize various devices based on metal-coated fibers, such as laser radiation power fiber sensors or high-power laser sources.

Paper Details

Date Published: 28 August 2019
PDF: 4 pages
Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 1119937 (28 August 2019); doi: 10.1117/12.2541150
Show Author Affiliations
Pavel Cherpak, Moscow Institute of Physics and Technology (Russian Federation)
Ivanov Grigorii, Moscow Institute of Physics and Technology (Russian Federation)
Nikolay Vanyushkin, Moscow Institute of Physics and Technology (Russian Federation)
Renat Shaidullin, Moscow Institute of Physics and Technology (Russian Federation)
Kotelnikov Institute of Radio Engineering and Electronics of RAS (Russian Federation)
Oleg Ryabushkin, Moscow Institute of Physics and Technology (Russian Federation)
Kotelnikov Institute of Radio Engineering and Electronics of RAS (Russian Federation)


Published in SPIE Proceedings Vol. 11199:
Seventh European Workshop on Optical Fibre Sensors
Kyriacos Kalli; Sinead O. O'Keeffe; Gilberto Brambilla, Editor(s)

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