11. Are there different types of side emitting fibers?
Answer-
Nowadays several types of side emitting fibers are marketed. The most common are: Solid core optics
Multi-stranded optics

12. What are solid core fibers?
Answer-
These optics are cylinders made of diverse polymers and encased on a transparent sheath or tube. As a standard are manufactured in different gauges or calibers from 3 to 25 or more millimeters in diameter.

13. What are multi-stranded optics?
Answer-
Multi-stranded optics are narrow walled tubes off transparent material, housing a number of smaller solid core fibers. The inner fibers are, generally 0,75mm in diameter and numbered from ten or less to several hundred, depending on the final use and diameter of the optic.

14. What are coiled or roped optics?
Answer-
Simply braided or woven ropes manufactured with thin solid core …show more content…
Are the side – emitting fibers with reflecting core more luminous?
Answer-
If a side emitting light guide has a center reflecting core it would appear that it would issue more light directionally, this is to say: if the light guide was suspended in mid-air and viewed from any angle.
The problem with that argument is that those optics are, normally attached to a support and viewed from fixed angles. The opaque centerpiece, in this case, would impede the passage of light from behind the core and hence the optic would have less light available to the viewer.

Side-emitting light guides are sheathed in a transparent cover and the viewer, by transparency, has the benefit of the light escaping not only from the individual fibers placed directly in front of his line of vision but also from the ones behind.

If we take a glass tube filled with a colored liquid and light it up from one end, we could view the whole of the mass as a lit-up cylinder. If we then place a concentric opaque core, from a given direction we would have less vision of the cylinder mass. The same would hold true with any transparent