A fiber optic communication system use a multimode graded-index fiber with a core index of 1.495 and a cladding refractive index of 1.475. The fiber has a length of 50 radius of 62 um, a loss factor of 0.3 dB/km and operate at a wavelength of 1.58 um. (i) Explain the condition for which the light wave will propagate and get trapped i
A fiber optic communication system use a multimode graded-index fiber with a core index of 1.495 and a cladding refractive index of 1.475. The fiber has a length of 50 radius of 62 um, a loss factor of 0.3 dB/km and operate at a wavelength of 1.58 um. (i) Explain the condition for which the light wave will propagate and get trapped i
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A fiber optic communication system use a multimode graded-index fiber with a core refractive
index of 1.495 and a cladding refractive index of 1.475. The fiber has a length of 50 km, core
radius of 62 um, a loss factor of 0.3 dB/km and operate at a wavelength of 1.58 um.
(i) Explain the condition for which the light wave will propagate and get trapped inside the
fiber core.
(ii) Calculate the critical propagation angle.
(iii) Calculate the number of guided modes propagating in the fiber.
(iv) Determine the coupling efficiency of the fiber.
(v) Evaluate the core radius that allows only 40 guided modes propagating in the fiber.
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