Investigation of dispersion penalty for optical fiber link at different values of fiber dispersion

Fiber dispersion degrades the performance of optical communication systems by broadening optical pulses as they propagate inside the fiber. This paper demonstrates the effect of dispersion on dispersion penalty at different lengths of fiber for pseudorandom data at the OC-192 rate. This paper shows that the large chirp from directly modulated lasers operating at the OC-192 rate (9.953 Gb/s) has prevented their use in such high data rate systems. Simulation results show power required to achieve the constant bit error rate with the increase in fiber length.