Investigation of heating of silica optical fibers with metal spiral by laser radiation transmitted in the core
Khramov I. O.
1, Ryabushkin O. A.
11Fryazino Branch, Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Fryazino, Moscow oblast, Russia
Email: oxaxivan@yandex.ru
The thermo-optical properties of passive silica optical fibers with a metal spiral applied on their lateral polymer surface are investigated. It is shown that the heating of these optical fibers by transmitted laser radiation due to microbending losses causes a change in their temperature and electrical resistance of the metal spiral. Based on this, a simple method for measuring and real-time monitoring the output power of fiber lasers is proposed. Keywords: fiber lasers, optical fibers, micro-bending losses, fibers with a metal spiral, optical power measurement. DOI: 10.61011/TPL.2023.07.56450.19601
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