Modeling of Optical Transmission Link

The design problem of fiber optic communication has been the focus and difficulty of researcher's investigation. This paper mainly models optical transmission links and explores the relationship between signal-to-noise ratio tolerance points and bit error rates. And the design scheme finds the farthest transmission distance for different transmission formats under the premise of given bit error rate. In the proposed scheme, the effect of amplification gain on amplifier noise is considered, and theoretical analysis and practical simulation are consistent with each other.