The index of refraction of the core of an optical fiber is 1.5 + 3 times 10^-8i
ID: 3162315 • Letter: T
Question
The index of refraction of the core of an optical fiber is 1.5 + 3 times 10^-8i at the wavelength of 1.55 mu m commonly used for optical communication. How far does a 1.55 mu m-beam can travel in the fiber before its intensity falls to 10% of the initial value? What does this exercise tell you about the desired absorption characteristics of an optical fiber? Justify your answer. Provide a brief description of H. A. Lorentz's electron-oscillator model of the atom. Identify salient features, no equations needed. What are the physical phenomena that the model helps elucidate?Explanation / Answer
Korentz has proposed the electron oscillator model for explaining the fine atom-field interactions.
Here, he assumed that the electrons present in the atom are connected to the nucleus as same as that of Hookes law for spring.
F = -kx
The spring strectehes when the electron repelled by the field and comprsses when the electron attracted by the atom. So when atom comes to the influence of electric field then the electron displaces from equillibrium.
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