Modern Fiber Optic Communication Systems Simulations with Advanced Level Matlab Modules
Dispersion in an Optical Fiber
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(1) Use the Existing Modules / Components for Your Research & Development.
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The signal propagation in a fiber is simulated. Fiber nonlinear effects are ignored. The Fourier transform of the input signal field is taken to obtain the input spectrum. It is multiplied by the fiber transfer function and then the inverse Fourier transform leads to the output pulse.
Explore Further this Module:
2b.1 Let = 0 s.s/m, = (1.5 e-6)/3 e8 s/m and = 0 m-1 . Plot fiber input and output field envelopes and electric field distributions. Is the pulse width at the fiber output different from that at the input? Explain.
2b.2 Let = -21 ps.ps/km, = 0 s/m and = 0 m-1. Does the pulse undergo a time-shift? Explain.
2b.3 Let = -21 ps.ps/km, = (1.5 e-6)/3 e8 s/m and = 0 m-1. Plot fiber input and output field envelopes and electric field distributions.
2b.4 Repeat 2b.3 with loss coefficient = 0.2 dB/km. Does the fiber loss affect the pulse broadening? Compare the pulse widths and peak amplitudes corresponding to 2b.3 and 2b.4.
2b.5 Repeat 2b.2 to 2b.4 with a rectangular pulse.
Selected Simulated Results Using this Module
Input Power in Time Domain
Input Field in Time Domain
Input and Output Powers in Time Domain
Input and Output Electric Field Distributions in Time Domain