Quote:
Originally Posted by Zeph
Erm how could water affect Fiber? Hypothesize!
|
Fibre only works because of total internal reflection. A very very fine fibre of pure glass is encased in a outer of not as pure glass. Laser light entering at a precise angle cannot escape into the outer layer so keeps getting reflected 100% back into the fibre. Older optical fibres I think did not have the glass glass core and had glass/something else I guess if water got inbetween those layers it would interfere with the internal reflection.
But for modern fibre optics its 100% sealed and unaffected by water.