Optical MSK long-haul transmission systems

The generation and detection of linear, weakly non-linear and strongly non-linearly optical MSK long-haul transmission systems have been reported. The simulation test-beds based on Matlab Simulink platform have been successfully developed. The following significant results have been achieved: (i) BER of 10 -38 is achieved for an OSNR of 22.2dB; (ii) At BER of 10 -12 , linear MSK is approximately 1 dB more tolerable to nonlinearity than weakly nonlinear MSK and 5.5dB more durable than strongly nonlinear MSK; (iii) (c).The sideband suppression ratio for linear MSK is approximately 22dB. New technique for calculation of performance evaluation implementing expected maximization (EM) theorem is utilized.