Design and analysis of a highly effective system to mitigate the effect of dominating signals using duobinary modulation technique with suitable low dispersion compensation techniques
摘要
For long-reach communication in passive optical network (PON), it is essential to mitigate the effect of dominating signals using an effective modulation technique with a suitable fiber system. Three fiber systems, Dispersion Compensation Fiber (DCF), Fiber Bragg Grating (FBG), and Optical Phase Conjugator (OPC) with Duobinary modulation technique, are installed for effective data transmission. A successful downlink transmission of 10 Gbps data is done at 193.414 THz frequency using 1550 nm wavelength with a suitable fiber system. The performance of different fiber systems having the configuration Duobinary + DCF, Duobinary + FBG, and Duobinary + OPC is analyzed over various lengths of fiber, 100 km, 200 km, 300 km, 400 km, and 500 km in terms of eye diagrams, electrical histograms, Q-factor, BER, and jitter value. The analysis is done for two different power levels of transmission, one at 0 dBm and the other at 3 dBm. To investigate the most suitable system, a comparative analysis is done in the form of MATLAB graphs. Results show that Duobinary + OPC is the most effective fiber system for compensation of chromatic dispersion at higher power levels as well as at lower power levels. The system is capable of achieving a maximum Q-factor of 36.11 at 0 dBm and 40 at 3 dBm. The minimum BER attained by the system is of value 1.32 × 10–39 at 0 dBm and 1.42 × 10–40.