<P> An optical fiber or optical fibre is a flexible , transparent fiber made by drawing glass ( silica ) or plastic to a diameter slightly thicker than that of a human hair . Optical fibers are used most often as a means to transmit light between the two ends of the fiber and find wide usage in fiber - optic communications , where they permit transmission over longer distances and at higher bandwidths ( data rates ) than wire cables . Fibers are used instead of metal wires because signals travel along them with less loss ; in addition , fibers are immune to electromagnetic interference , a problem from which metal wires suffer excessively . Fibers are also used for illumination and imaging , and are often wrapped in bundles so that they may be used to carry light into , or images out of confined spaces , as in the case of a fiberscope . Specially designed fibers are also used for a variety of other applications , some of them being fiber optic sensors and fiber lasers . </P>
<P> An optical fiber or optical fibre is a flexible , transparent fiber made by drawing glass ( silica ) or plastic to a diameter slightly thicker than that of a human hair . Optical fibers are used most often as a means to transmit light between the two ends of the fiber and find wide usage in fiber - optic communications , where they permit transmission over longer distances and at higher bandwidths ( data rates ) than wire cables . Fibers are used instead of metal wires because signals travel along them with less loss ; in addition , fibers are immune to electromagnetic interference , a problem from which metal wires suffer excessively . Fibers are also used for illumination and imaging , and are often wrapped in bundles so that they may be used to carry light into , or images out of confined spaces , as in the case of a fiberscope . Specially designed fibers are also used for a variety of other applications , some of them being fiber optic sensors and fiber lasers . </P>
what type of energy is transmitted by an optical fibre
what type of energy is transmitted by an optical fibre
light
light