Numerical investigation of Microwave Photonic Link Using Different Electrical Filters

Abstract

In optical fiber communication systems, the performance is affected by a critical parameter called dispersion. Dispersion causes a pulse of light to broaden as it travels through a medium. This is because the different wavelengths or modes in the pulse travel at slightly different speeds, causing them to arrive at different times. Over a long distance, this can cause the pulse to spread out and overlap with neighboring pulses, leading to errors in data transmission or other types of signal degradation. To overcome this problem, there is a demand for efficient filters (both optical and electrical) in the dispersion compensating modules. In this work, we have analyzed the performance of two Electrical Filters (Low pass Butterworth and Raised Cosine filters). The Opti-system software is used for numerical modeling, which confirm that Raised Cosine Filter is better than Butterworth electric filters. The maximum Q-factor of 16.0572 and a minimum bit rate of 2.48771e-058 at 10 Gbit/s is obtained near the telecommunication wavelength. © 2023 IEEE.