Advancements in Digital Signal Processing: Design and Implementation of IIR Bandpass Optical Filter using Optisystem

This paper explores the dynamic concept of digital signal processing (DSP), with a focus on the design and implementation of Infinite Impulse Response (IIR) bandpass filters. Emphasizing their pivotal role in diverse technological applications, the manuscript details a sophisticated RF signal processing setup integrating sine generators, Pseudo Random Bit Generator (PRBS), and optical modulation. The subsequent introduction of a Bandpass Bessel Filter, meticulously centered at 7 GHz, with a bandwidth of 1.25 GHz, is examined through RF spectrum analyzer and compared with different types of bandpass filters. Results confirm the filter's efficacy in isolating the desired frequency range, thereby refining the modulated RF signal. The integration of such filters is underscored for its impact on signal integrity and reliability, offering valuable contributions to the ongoing dialogue in DSP.