Silica wood has electrical conductivity. Why is it used for making optical fibers?
Crystalline silica is divided into three kinds: quartz, scale quartz and square quartz because of their different crystal structures. Pure quartz is a colorless crystal, large and transparent, prism like quartz called crystal. If they contain trace impurities in crystal with different colors, amethyst, Citrine etc.. Ordinary sand is quartz fine sand, a (iron impurity) and white sand (less impurities, Jiao Chunjing). Silica crystal, silicon atoms with 4 valence electrons and 4 oxygen atoms form 4 covalent bonds, silicon atoms in the tetrahedral centers, 4 vertices of 4 oxygen atoms in the tetrahedral, SiO is most simple composition, only said the number of atoms of silicon and oxygen silica crystals the ratio of the. Silicon dioxide is an atomic crystal.
The optical fiber is a mixture of non crystalline. At present, the main component of optical fiber is silica.Silica also called silica, chemical formula SiO. There are two kinds of crystalline silica and amorphous silica in nature.The main component of sand is silica.
Optical fiber is a kind of transparent glass fiber, the diameter is only about 1~100 M. The utility model is composed of two layers of an inner core and an outer sleeve, wherein the refractive index of the inner core is larger than the refractive index of the outer sleeve, and the light enters from one end to the interface of the inner core and the outer sleeve, and is emitted from the other end after multiple times of total reflection.
The fabrication of optical fibers is the use of silicon dioxide crystals for total reflection of light, rather than the use of electrical conductivity.
Silica widely exists in nature and forms rocks with other minerals. Natural silica, which is about 12% of the earth's crust, is composed of two kinds of crystalline and indefinite forms. Quartz crystals are crystalline silica with different crystalline shapes and colors. A colorless crystalline crystalline substance of quartz; usually crystalline. Having a band or layer of colored rings called agate (containing impurities).
