Simulative Investigation of Performance of Direct Intensity Modulation and External Modulation in Optical Network
In this report, analysis of three optical data channels dense wavelength division multiplexing optical network by direct intensity modulation and external modulation has been stimulated using OPTSIM. By comparing the results of external intensity modulation and direct modulation with respect to Q value, BER, it can be seen that the performance of external modulations better than direct modulation. Radio over Fiber (RoF) is an optical fiber link to distribute modulated RF signals from a central location to Remote Antenna Units (RAUs). The RoF systems are developed to replace a central antenna with a low power Distributed Antennas System (DAS).