| 1 |
Refractive index of the core is uniform
and undergoes an abrupt change at the
interface of core and cladding. |
Refractive index of the core varies gradually with radial resistance |
| 2 |
The diameter of core is about 10 µm in
single mode fiber, 50 to 200 µm in multi
mode fiber |
The diameter of the core is about 50 µm |
| 3 |
The shape of the propagation of the optical signal is in zig zag manner
|
The shape of the propagation optical signal appear in the helical or spiral manner.
|
| 4 |
Attenuation losses are of the order 100 dB/km |
Attenuation losses are of the order 10dB/km |
| 5 |
Numerical aperture is more for multi
mode step index fibers but it is less in
single mode step index fibers |
Numerical aperture is less in graded index fibers |
| 6 |
Single and multimode propagations exist |
It is a multi mode fiber |
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