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A laser pulse having spectral width Al. =500nm is launched into a step-index fiber. The fiber has core diameter d = 3.5µm, length L=1km and A = 0.005. The wavelength dependence of the core refractive index, material dispersion, and waveguide dispersion are shown in figures P4a, P4b, and P4c respectively. a) Plot the overall broadening of the pulse due to contributions from modal dispersion, material dispersion, and waveguide dispersion as a function of wavelength for the range 0.7 um s2s1.6um NOTE: You MUST plot to scale, do NOT sketch.] b) What is the maximum data rate that a signal can be transmitted through the fiber and the corresponding wavelength?

A laser pulse having spectral width Al. =500nm is launched into a step-index fiber. The fiber has core diameter d = 3.5µm, length L=1km and A = 0.005. The wavelength dependence of the core refractive index, material dispersion, and waveguide dispersion are shown in figures P4a, P4b, and P4c respectively. a) Plot the overall broadening of the pulse due to contributions from modal dispersion, material dispersion, and waveguide dispersion as a function of wavelength for the range 0.7 um s2s1.6um NOTE: You MUST plot to scale, do NOT sketch.] b) What is the maximum data rate that a signal can be transmitted through the fiber and the corresponding wavelength?

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A laser pulse having spectral width A. =500nm is launched into a step-index fiber. The fiber has core diameter d = 3.5µm, length L=1km and A = 0.005. The wavelength dependence of the core refractive index, material dispersion, and waveguide dispersion are shown in figures P4a, P4b, and P4c respectively. a) Plot the overall broadening of the pulse due to contributions from modal dispersion, material dispersion, and waveguide dispersion as a function of wavelength for the range 0.7 jum s2s1.6um NOTE: You MUST plot to scale, do NOT sketch.] b) What is the maximum data rate that a signal can be transmitted through the fiber and the corresponding wavelength?
Transcribed Image Text:A laser pulse having spectral width A. =500nm is launched into a step-index fiber. The fiber has core diameter d = 3.5µm, length L=1km and A = 0.005. The wavelength dependence of the core refractive index, material dispersion, and waveguide dispersion are shown in figures P4a, P4b, and P4c respectively. a) Plot the overall broadening of the pulse due to contributions from modal dispersion, material dispersion, and waveguide dispersion as a function of wavelength for the range 0.7 jum s2s1.6um NOTE: You MUST plot to scale, do NOT sketch.] b) What is the maximum data rate that a signal can be transmitted through the fiber and the corresponding wavelength?
1.475 P4a: Refractive index vrs wavelength 1.470 1.465 1.460 1.455 1.450 1.445 1.440 0.4 0.6 0,8 1.2 1.4 1.6 Wavelength (pm) 200 175 P4b: Material dispersion vrs wavelength 150 125 100 75 50 25 -25 -50 0.7 0.8 0.9 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Wavelengih (am) P4c: Waveguide dispersion vrs wavelength 2 1 0.6 0.8 1.2 1.4 1.6 1.8 Waveguide dispersion (ps/km/ns) Refractive index (L-ujsd) N co
Transcribed Image Text:1.475 P4a: Refractive index vrs wavelength 1.470 1.465 1.460 1.455 1.450 1.445 1.440 0.4 0.6 0,8 1.2 1.4 1.6 Wavelength (pm) 200 175 P4b: Material dispersion vrs wavelength 150 125 100 75 50 25 -25 -50 0.7 0.8 0.9 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Wavelengih (am) P4c: Waveguide dispersion vrs wavelength 2 1 0.6 0.8 1.2 1.4 1.6 1.8 Waveguide dispersion (ps/km/ns) Refractive index (L-ujsd) N co
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