What should be the maximum acceptable angles at the air-core interface on an optical fibre if nx and n2 are the refractive indices of the core and cladding respectively?
A. sin-1 \(\left(\frac{n_{1}}{n_{2}}\right)\)
B. sin-1 \(\sqrt{n_{1}^{2}-n_{2}^{2}}\)
C. tan-1 \(\frac{n_{2}}{n_{1}}\)
D. sin-1 \(\left(\frac{n_{2}}{n_{1}}\right)\)
Answer:B
What should be the maximum acceptable angles at the air-core interface on an optical fibre if nx and n2 are the refractive indices of the core and cladding respectively?
A. sin-1 \(\left(\frac{n_{1}}{n_{2}}\right)\) B. sin-1 \(\sqrt{n_{1}^{2}-n_{2}^{2}}\) C. tan-1 \(\frac{n_{2}}{n_{1}}\) D. sin-1 \(\left(\frac{n_{2}}{n_{1}}\right)\)