QI: A multimode step index fiber has a numerical aperture of 0.54,core diameter of 50µm and a cladding refractive index of 1.4. TheLD at 1400nm was used as a source.Find:1. Number of the modes that are travelling in the fiber.2. Normalized frequency3. The launching angle of the third mode of propagation (assumethe reflection coefficient phase =0 degree).4. The acceptance angle of the fiber.Q2: Calculate the output optical power for 30cm polymer waveguideif the launched optical power was -3dBm. The total loss for thewaveguide was 30, 33 and 35.8dB for 10, 15 and 20cm waveguidechannels lengths, respectively.

Solution 1:- Given, Numerical Apprature, N.A=0.54 Core diameter, d=50μm=50x10-6 m…

Answered: 1. Number of the modes that are…

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1. Number of the modes that are travelling in the fiber. 2. Normalized frequency

College Physics

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ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

QI: A multimode step index fiber has a numerical aperture of 0.54,
core diameter of 50µm and a cladding refractive index of 1.4. The
LD at 1400nm was used as a source.
Find:
1. Number of the modes that are travelling in the fiber.
2. Normalized frequency
3. The launching angle of the third mode of propagation (assume
the reflection coefficient phase =0 degree).
4. The acceptance angle of the fiber.
Q2: Calculate the output optical power for 30cm polymer waveguide
if the launched optical power was -3dBm. The total loss for the
waveguide was 30, 33 and 35.8dB for 10, 15 and 20cm waveguide
channels lengths, respectively.

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