A single mode step index fibre has a core of about _ um diameter
Correct answer: D. 5
- A. 50 to 1000
- B. 50
- C. 30
- D. 5
Explanation
A single mode or monomode step index fibre allows the propagation of only one transverse electromagnetic mode and hence the core diameter must be of the order of 2 µm to 10µm.
This question appeared on the UHS MDCAT 2008 paper, which you can sit online with every answer explained.
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