Physics

Physics

Problem

For efficient transmission through an optical fibre placed in air, which one of the following inequalities between the refractive indices must be satisfied? a) ncore>nair>ncladn_{\text{core}} > n_{\text{air}} > n_{\text{clad}} b) nclad>ncore>nairn_{\text{clad}} > n_{\text{core}} > n_{\text{air}} c) ncore>nclad>nairn_{\text{core}} > n_{\text{clad}} > n_{\text{air}} d) ncore<nclad<nairn_{\text{core}} < n_{\text{clad}} < n_{\text{air}}

Browse the problem library