Core glass

Fig. 6. Double crucible configuration showing core glass (upper crucible) flowing through molten cladding glass in lower crucible to yield graded-index...

Wilson S.J., Hollow core glass waveguides, Proc. SPIE 799 (1987), pp.54-60. 

Fresnel Refection losses—Reflection losses that are incurred at the input and output of optical fibers due to the differences in refraction index between the core glass and immersion medium. 

Core glass with a high refractive index... 

Hitco Carbon Composites Inc. of Gardena, CA., USA has won a four-year contract to build vapor barrier assemblies for 60 Boeing C-17 aircraft. The autoclaved, foam-cored glass fiber/epoxy panel assembhes measure 6.5 m long by 5.5 m wide (21 ft by 18 ft) with compound curvature, designed to prevent fuel and fuel vapors from the main fuel tanks from penetrating the plane s cargo area. 

Hitco Carbon Composites Inc. of Gardena, CA., USA has won a four-year contract to build vapor barrier assemblies for 60 Boeing C-17 aircraft. The autoclaved, foam-cored glass fiber/epoxy panel... 

The double-crucible assembly consists of two silica crucibles inserted one into the other with an open nozzle at the lower end. The inner crucible is charged with the core glass, while the outer crucible... 

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