Dyadenko M.V. scientific researcher, candidate of technical sciences (department of glass and ceramic technology) New Delhi 2013 Glass for an optical fiber Educational institution «Belarusian State Technological University»

2 Twister Fiber-optical plates Focon Fiber-optical bundles Fiber-optical elements

3 Glasses of night vision APPLICATION OF OPTICAL FIBER Collector Fiber-optical bundle for transfer of the image Medical magnifier binocular with the fiber gaffer Clarifying agent with a optical guide The converter of a light signal Fiber-optical bundle for transfer of light The ring fiber lamp

4 Structure of optical fiber

Temperature dependence of viscosity Area of: 1 – processes of single core lightguide drawing that is thinner than 1 mm; 2 – redrawing of a batch of single core lightguide in order to get multicore optical fibers; 3 – processes of single core and multicore lightguide drawing with a diameter of 10–30 mm; 4 – pressing of glass products; 5 – annealing of glass products 5

Properties of twister Property of twister Twister developedindustrial Aperture of product1,031,05 Difference on size ТCLE between glass for light-guiding core and reflective coats, К -1 15∙ ∙

The comparative characteristic of temperature dependence of viscosity of industrial (a) and developed (b) compositions of glass for optical fiber drawing 7

Thickness of protective coat, when viscosity of glass for protective coat is lower than viscosity of glass for lightguiding core Thickness of protective coat, when viscosity of glass for protective coat is higher than viscosity of glass for lightguiding core Influence of coordination of glass for optical fiber according to rheological characteristics on thickness of protective coat 8

The comparative characteristic of the basic properties of industrial and developed glass for light-guiding core The basic characteristics of glass for light-guiding core Developed glassIndustrial glass 1 Crystallization stability within temperature interval 600–1000 о С Absence crystallization Crystal phase LaTiO 3, Ba 2 LaZrO 5,5 and La(B 0,95 SiO 4,93 ) 2 Transmission light, % Refractive index n D 1,80501, Medium dispersion0,019260, Coefficient of dispersion ν D 42,9733,17 6 Factor of easing, mm -1 0,00450, ТCLE∙10 -7, К -1 77,877,0 8 Density, kg/m 3 ∙ ,184,20 9 Temperature of synthesis, о С

Devices for measurement of glass viscosity in a range of Pа∙s Model BBV-1000 (USA) Model PPV-1000 (USA) Model RSV-1600 (USA) 10

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