1. 5/22/20142
STRUCTURE OF FIBER

2. 5/22/20143
PROPAGATION OF LIGHT IN FIBERS

3. 5/22/20144
MODES OF PROPAGATION

4. 5/22/20145
LOSS OF ELECTRIC FIELD IN CLADDING

5. 5/22/20146
WAVE LENGTH DEPENDENCE OF FIBER ATTENUATION

6. 5/22/20147
A Digital Signal Before (noisy and attenuated) and After
Regeneration

7. 5/22/20148
Characteristics of Fibers
 Dispersion smaller core dia– less path length
Model dispersion G.I – instead of S.I
S.M
 Bandwidth Dispersion
 Attenuation
 Micro bend loss,Bend Radius
Increases loss, May break.
 Numerical Aperture
MM– NA=0.21, SM– NA=0.11
 Fiber Strength:- Greater than Stainless Steel

8. 5/22/20149
APPLICATION OF FIBER OPTICS
 Wide band width
 Elimination Of Ground Loops
 Sensor applications
 Image guide applications
 Prefered medium for nuclear
 Used in defence,railway,power sector,
telecom and data communications