Abstract
We study the information capacity for a multispan optical fiber transmission
system with losses, dispersion, nonlinearity, and amplified spontaneous emission noise.
A perturbation technique is developed to examine the information capacity, and a
semianalytic expression of the conditional probability distribution function is
determined initially. A novel semianalytical form of the information capacity was
obtained, which can be extended to the wavelength division multiplexing optical fiber
communication systems. Computer simulations are executed for various parameters of the
transmission system. The studied results indicate that the capacity does not monotone
increase with the input power and is affected by the nonlinear coefficient and bit rate
prominently.
© 2010 IEEE
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