Study on Coexistence Between a High-Power CATV Signal and Data and Radio Signals Over Fiber in the Same Optical Band

This collaborative research project, involving institutions from Colombia and Ecuador, focuses on interference analysis within Next-Generation Optical Networks. The primary goal is to quantify the detrimental effect of a high-power optical CATV signal (transmitted at 12 dBm) on adjacent data channels (at 0 dBm) and LTE channels, transmitted over 25 or 50 km fiber optic spans. The methodology combines physical experimentation and simulation. Advanced test equipment such as Vector Signal Generators (VSG), Arbitrary Waveform Generators (AWG), and Serial BERTs are utilized to generate and analyze the modulated optical signals. Tunable lasers and intensity modulators are employed to configure the channels. Signal analysis is performed using wide-bandwidth oscilloscopes and vector signal analyzers. The work aims to determine the minimum separation (in frequency or wavelength) required between the CATV channel and the data/LTE channels to ensure transmission quality, measured by BER, contrasting experimental results with simulations in platforms like OptSim and VPI-Photonics.<br/><br/><b>Goal</b>: <br/>To characterize the impact of a high-power optical CATV signal on adjacent data and radio (LTE) channels over fiber optics, in order to determine the minimum spectral or physical separation distance required to maintain a desired Bit Error Rate (BER) level.<br/><br/><b>Research lines</b>: <br/>Telecommunications and information technologies