WSEAS Transactions on Communications
Print ISSN: 1109-2742, E-ISSN: 2224-2864
Volume 15, 2016
Performance Analysis in a PAM-4 Fiber Transmission IM-DD with Pre-Compensation Filter
Authors: , ,
Abstract: In this paper we study the performance of 4-ary pulse amplitude modulation (PAM-4) transmission using intensity modulation with direct detection (IM-DD) on a fiber link of 80 km. The system uses a pre-compensation filter to take care of the chromatic dispersion. Specifically, it is studied the effect of the difference between nominal chromatic dispersion used in the pre-compensation filter and the actual value of the chromatic dispersion introduced by the fiber. This is because the actual length of the fiber can be different from the designed one and, also, because the dispersion parameter can vary because of changing in refractive index of the fiber that can be caused by the temperature variation. Simulation results obtained by means of Monte Carlo simulations are used to show the sensitivity of bit error rate performance to the mismatch between nominal and actual value of the chromatic dispersion.
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Keywords: Pulse amplitude modulation (PAM), intensity modulation, direct detection, non-coherent demodulation, chromatic dispersion
Pages: 317-322
WSEAS Transactions on Communications, ISSN / E-ISSN: 1109-2742 / 2224-2864, Volume 15, 2016, Art. #35