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Chapter 40, Problem 8P

(I) Show that the quantity 2 / I has units of energy.

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Determine I, V1, V2, and V, for the series de configuration « + V - R1 E, = 10 VoM Si 7 4.7 ka R2 2.2 ka v, Ez =-5 V
(2) A laser diode feeding a glass fiber (dielectric constant ks = 2.25) could be separated from it by a small air gap. (a) Compute the return or reflection loss at the air-to-fiber interface. (b) If this laser illuminates a 4.0-km length of fiber. The attenuation coefficient is 3 dB/km. The power is reflected back toward the laser by the end of the fiber. Compute the total loss including reflection loss, i.e. level of reflected light power when it returns to the LD. (c) To improve the coupling efficiency, the glass fiber is coated with material having index of refection of n = 1.225. Compute and compare the return loss at the air-to-fiber interface with and without coating.
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What is Electromagnetic Induction? | Faraday's Laws and Lenz Law | iKen | iKen Edu | iKen App; Author: Iken Edu;https://www.youtube.com/watch?v=3HyORmBip-w;License: Standard YouTube License, CC-BY