Question

11:14 AM Wed Jun 19 71% Problem1: Fiber Optics different optical loss (attenuation) sources a) Provide six extrinsic sources) of an optical fiber system. b) Sketch and briefly explain the Total Internal Reflection (TIR) phenomenon. c) What is the difference between a step index fiber and a graded index fiber? (Hint: Consider the ray tracing of different modes in a multimode fiber and the profile of the index of refraction in each case) d) A laser beam of 1550nm wavelength with output power of OdBm is incident on an optical fiber of 24 km length. The measured output power at the end of the optical fiber is found to be -6dBm. Determine the optical fiber attenuation in dB/Km at 1550nm wavelength e) A He-Ne laser beam of 632.8 nm wavelength is incident on the end face of optical fiber of core diameter 50 um and 10 cm in length, located in air, having a plastic core of refractive index n2 1.480 and a plastic cladding of refractive index n 1.44 as shown in figure 1 below (3 intrinsic and 3 an iCalculate its numerical aperture, NA, its critical angle, Oc: 03, and its acceptance angle 0^-0\ ii Determine the V-number of the provided optical fiber at a vacuum wavelength of 632.8nm. Is it a single mode or multimode fiber? ii How many internal reflections does the laser beam experience before it exits the fiber? iv) What is the speed of light inside the optical fiber? What is the wavelength of light inside the optical fiber? v) n, 1.00 n 1.480 n, 1.44

need Answers for c & d only. Everthing else is good.

need answers for d & e only. Not c. Thank you

Answer 1

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