October 2009
Intermediate to advanced
503 pages
14h 28m
English
Content preview from Engineering Physics
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11.6 Differences between single mode fibres and multimode fibres
| Single Mode Fibres | Multimode Fibres |
|---|---|
|
1. In single mode fibres there is only one path for ray propagation. |
1. In multimode fibres, large number of paths are available for light ray propagation. |
|
2. Single mode step index fibres have less core diameter (<10 μm) and the difference between the refractive indices of core and cladding is very small. |
2. Multimode step index fibres have larger core diameter (50 to 200 μm) and the difference between the refractive indices of core and cladding is large. |
|
3. In single mode fibres, there is no dispersion. |
3. There is signal distortion and dispersion takes place in multimode fibres. |
|
4. Signal transmission capacity is less but ... |