High-strength hermetically tin-coated optical fibers

Bogatyrjov, V. A.; Бубнов, М. М.; Dianov, E. M.; Makarenko, A. Yu.; Rumyantsev, S. D.; Semjonov, Sergey L.; Sysoljatin, A. A.

doi:10.1364/ofc.1991.wl9

Cited by 9 publications

(5 citation statements)

References 1 publication

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“…This is most commonly achieved using a jacket material that provides a hermetic seal and typically metal coatings are used for this purpose. In some cases metal-coated optical fibres have shown significant improvements in fibre strength from ∼5 GPa [22] for a non-hermetic jacket to 14 GPa [23] for some metal-coated fibres.…”

Section: Introductionmentioning

confidence: 99%

A fibre optic corrosion fuse sensor using stressed metal-coated optical fibres

Wade

Wallbrink

McAdam

et al. 2008

Sensors and Actuators B: Chemical

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Section: Introductionmentioning

confidence: 99%

A fibre optic corrosion fuse sensor using stressed metal-coated optical fibres

Wade

Wallbrink

McAdam

et al. 2008

Sensors and Actuators B: Chemical

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“…Предел прочности ОВ без покрытия, измеренный методом осевого растяжения, согласуется с литературными данными [23]. Параметр динамической усталости (n d ) у волокон с металлическими покрытиями, по литературным данным [24,25], превышает значение 100, измеренное методом двухточечного изгиба. Благодаря нанесению медного покрытия параметр n d у волокон увеличивается.…”

Section: обсуждение результатовunclassified

Crack resistance, strength and dynamic fatigue of quartz fibers with copper coatings

Bulatov

Шацов

Grigoryev

et al. 2022

Izv. VUZ. Poroshk. Met.

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Metallized coatings can significantly improve the operational properties of quartz fibers. The research was conducted to determine the crack resistance, strength and dynamic fatigue of optical fibers without any coating and with copper coatings. The microhardness of quartz fibers was measured by the diamond indentation of end surfaces. The stress intensity parameter K1c was found from the A. Niihara semi-empirical dependence. The geometry of indentation and radial cracks was studied using a scanning electron microscope. The crack resistance of uncoated quartz turned out to be almost 3 times less as compared to the copper coating fiber, which is presumably due to the additive contribution of compressive stresses on fiber surfaces and quartz wetting with copper. Copper-coated optical fiber drawing increases the tensile strength, crack resistance and dynamic fatigue parameter, and it is the main resource for maintaining operation in the conditions of a statistical approach to structural strength. Comparative tests were conducted to check the optical fiber strength by two-point bending and axial tension methods. Experimental tests conducted to check the ultimate mechanical strength of quartz optical fibers showed a significant spread of data, which indicates the presence of cracks of various sizes in a brittle solid and is a characteristic feature of brittle fracture as suggested by the A. Griffiths theory. In addition, it was assumed that the chaotic distribution of defects and microcracks extends along the entire length of a brittle solid, a quartz optical fiber in this case. A statistical model based on the Weibull distribution was used to describe surface microcracks depending on the fiber length. As a result, Weibull graphs were plotted in coordinates connecting the probability of failure with the strength, fiber length and parameter describing the ultimate strength.

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“…The dispersion of the strengths was determined from 100 measurements. The failure stress σ was calculated according to the formula recommended in [7]: (1) where d is the diameter of the fiber, ∆ is the distance between the neutral axes of the fiber loop, and E = 73.5 GPa.…”

Section: Sample Preparation and Experimental Techniquementioning

confidence: 99%

Influence of the physicochemical state of impurities on the strength of silica fibers

et al. 2006

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The size distribution of compositional microinhomogeneities in silica glasses prepared by different methods is investigated by electron microscopy. The formation of these defects is caused by the presence of impurities introduced into the glass upon phase separation and segregation. The surface of millimeter-sized segments of silica optical fibers 125 µ m in diameter always contains inhomogeneities up to 1 µ m in size. This explains the growth of cracks to a critical size in microregions containing impurities in the course of strength tests of glass fibers.

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High-strength hermetically tin-coated optical fibers

Cited by 9 publications

References 1 publication

A fibre optic corrosion fuse sensor using stressed metal-coated optical fibres

A fibre optic corrosion fuse sensor using stressed metal-coated optical fibres

Crack resistance, strength and dynamic fatigue of quartz fibers with copper coatings

Influence of the physicochemical state of impurities on the strength of silica fibers

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