This paper presents the analysis of a fully optical Finite Impulse Response filter, designed via direct realization, which enhances data transmission rates in optical communication systems. As optical fibers present issues like chromatic dispersion (CD), our method reduces reliance on complex Digital Signal Processing (DSP) techniques, thereby lowering system costs. The photonic chip aims to lessen overall system costs by using phase shifters, delay lines, and attenuators to compensate for the CD. The promise of optical filters as an effective way to improve performance in optical networks is highlighted by this study.