Advantages And Disadvantages Of Glass Fiber Optics

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1. What are sheathed fibers?
Answer-
The optics that have an external cladding whether opaque or transparent in order to afford a mechanical protection to the optics.

2. Why do some fibers change the colour of the light?
Answer-
In fact, all fibers change the color of the light in one way or another. Due to the physical characteristics of the conductor some frequencies travel with less impediment than others and it is impossible to produce a fiber that would have the same attenuation on the whole of the visible spectrum. To expect a light conductor to transport millions of different wavelengths along with exactly the same attenuation in every one would be quite unreasonable.
Some fibers absorb a little more blue than red and less green than yellow and others just the opposite. Consequently, the hue and tone of the light varies from meter to meter, in some cases very apparently. This phenomenon is referred to as selective spectral absorption.

3. What are the advantages and disadvantages of glass fiber optics?
Answer-

Advantages

Glass fiber optics are very resilient and ideally suited for working in places where the actual conductor will be subject to extreme temperatures or/and radiation,
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Cost is another factor; polymer fibers have a lower cost per optical area unit than glass, in part due to the easier manufacturing process. High quality PMMA systems rely on a fusion process to construct the common end, hence dispensing with the use of epoxy potting compounds. In all instances where the use of many fibers or light points is prescribed polymer systems are a much better option. Another point to bear in mind is the weight factor: glass fibers are heavier than polymer, a fact that may be critical in some applications, such as automotive and aircraft
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