A multimode step index fiber has a relative refractive index difference of 1% and a core refractive
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Question:
A multimode step index fiber has a relative refractive index difference of 1% and a core refractive index of 1.46. The maximum optical bandwidth that may be obtained with a particular source on a 4.5 km link is 3.1 MHz.
(a) Determine the rms pulse broadening per kilometer resulting from chromatic dispersion mechanisms.
(b) Assuming waveguide dispersion may be ignored, estimate the rms spectral width of the source used, if the material dispersion parameter for the fiber at the operating wavelength is 90 ps nm−1 km−1 .
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