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Question

The inner core of an optical fibre is....................... in composition.

A
Glass or plastic
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B
Bimetallic
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C
Copper
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D
Liquid
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Solution

The correct option is A Glass or plastic

The inner core of an optical fibre is Glass or plastic in composition.

The thin core is surrounded by cladding roughly ten times bigger in diameter, a plastic outer coating (about twice the diameter of the cladding), some strengthening fibers made of a tough material such as Kevlar®, with a protective outer jacket on the outside. 

Optical fiber is mostly made from silicon dioxide(SiO 2 ) but some little amount of other materials such as fluorozirconate, fluoroaluminate, and chalcogenide glasses as well as crystalline materials like sapphire, are used for longer-wavelength infrared or other specialized applications.Chemical compounds such as.

Turns out they can be made of just glass, glass plus polymers, or just polymers ("plastic optical fibers" -POF-). The most basic optical fiber consist of: An inner cylinder with high refractive index, called the core. A middle cylinder with a lower refractive index, called the cladding.

A typical optical fiber comprises three main components: the core, which carries the light; the cladding, which surrounds the core with a lower refractive index and contains the light; and the coating, which protects the fragile fiber within. The core, which carries the light, is the smallest part of the optical fiber.


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