&lt;title&gt;Susceptibility of static fatigue parameters of optical fibers to environmental conditions&lt;/title&gt;

Semjonov, Sergey L.; Бубнов, М. М.; Khleskova, O. V.

doi:10.1117/12.230123

Cited by 6 publications

(1 citation statement)

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“…After being processed, the fibres were kept in a desiccator (23°C, 26.5% RH) to protect the fibres from the effects of humidity, which has been shown previously to degrade the mechanical strength of optical fibres [13]. The time interval between the FBG fabrication and the mechanical testing was 7 days.…”

Section: Uv-irradiation Processmentioning

confidence: 99%

The influence of hydrogen loading and the fabrication process on the mechanical strength of optical fibre Bragg gratings

Wei¹,

Ye²,

James³

et al. 2002

Optical Materials

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This paper investigates the influence of hydrogen loading and other stages of the fabrication process on the mechanical strength of fibre Bragg gratings. Following UV-irradiation, tensile tests were carried out on Ge-B codoped photosensitive fibres with and without hydrogen loading. Fibre Bragg gratings (FBGs) were written using a range of UV wavelengths, namely 246 nm, 255 nm and 266 nm. The tensile strength of the optical fibres was determined in their as-received status and following the various stages of FBG fabrication. The mechanical strength was assessed using Weibull statistics. The results indicate that the strength of FBGs is influenced by the UV irradiation parameters and by the hydrogen-loading process. FBGs fabricated using shorter UV wavelengths and low pulse power intensity exhibit a high mechanical strength. The FBGs written in hydrogen loaded fibres have less than 50% of the strength of FBGs that have not been hydrogen-loaded. Fibre fracture morphology observed by scanning electron microscope (SEM) reveals fracture mechanisms of FBGs, which are correlated with the structural change of the silica fibres induced during the FBG

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Section: Uv-irradiation Processmentioning

confidence: 99%