14-08-2012, 10:50 AM
Optical fiber communication
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Types of optical fibers
Step-index single mode fiber
Step-index multi mode fiber
Graded index multi mode fiber
Layers surrounding Fiber cables
Primary coating
Gives additional mechanical strength
Protects fiber from stress
Protection against chemical attacks
Buffer jacket
Avoids the formation of microbends
Bending stress is relieved
Fiber losses are reduced
Layers surrounding Fiber cables…
Outer Jacket
To reduce abrasion and to provide extra protection against external mechanical strength
Filler materials
To avoid moisture absorption by fibers
Prevents corrosion
Multi fiber Cable
Used in telecommunication
Kevlar is used to provide tensile strength
Outer sheath for protection against impact forces (forces generated due to brittleness)