A key objective of the modeling of Fiber Optic Communication systems is to understand the physics of the system behaviour and the development of computational tools for the design of systems and predict their performance. Data transmission via fiber optical link inevitably leads to bit errors due to various effects, the dominant of which are optical amplifier noise, nonlinearity, polarization effects and non ideal transreceivers. There are numerous studies that provide techniques to characterize and calculate the effects in Bit Error Ratio (BER). In This paper, we optimize the Bit Error Ratio (BER) in fiber optic communication. The calculation of the BER in a system of finding optimum power level requires an accurate model of the nonlinear interactions. Our method of calculation of the BER in the presence of nonlinear distortion and amplified spontaneous emission noise is based on calculations of the full Probability Density Function (PDF) of the amplitude or time jitter induced nonlinear phase. Using knowledge of the PDF of the variation of the amplitude induced by combined noise, noise and nonlinear contributions issue to calculate the BER. The purpose of this paper is to develop a method to accurately account between nonlinear crosstalk and channels in the calculation of BER.

Optical Fiber Communication (OFC); Bit Error Ratio (BER); Probability Density Function (PDF); Multiplerxer (MUX); Demultiplexer (Demux); Figure of Merit (FOM)

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