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Metal coated fiber sensor for laser power measurements with enhanced sensitivity
Author(s): Ivan Khramov; Renat Shaidullin; Oleg Ryabushkin
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Paper Abstract

A method for high-sensitive measurement of optical power of fiber lasers is introduced. It is based on application of a metal-coated fiber as a sensor. A part of optical radiation transmitting through the core of a metal-coated silica fiber is scattered and further absorbed in the outer cladding. The change of electrical resistance of the metal coating induced by its heating is measured. This technique can be used for measurements of the output power of fiber laser sources in real time with minor optical losses and beam distortion. The dynamic range can be widely varied by changing the bend curve radius of the sensor fiber. Optical scattering and bend losses were investigated for different geometries of metal-coated fibers. A heating model of metal-coated fibers was developed.

Paper Details

Date Published: 11 April 2019
PDF: 7 pages
Proc. SPIE 11028, Optical Sensors 2019, 110281U (11 April 2019); doi: 10.1117/12.2520770
Show Author Affiliations
Ivan Khramov, 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 (Russian Federation)
Oleg Ryabushkin, Moscow Institute of Physics and Technology (Russian Federation)
Kotelnikov Institute of Radio Engineering and Electronics (Russian Federation)


Published in SPIE Proceedings Vol. 11028:
Optical Sensors 2019
Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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