Chromatic dispersion management for optical wavelength division multiplexed transmission systems
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United States of America Patent
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Nov 13, 2001
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app pub date -
Jun 26, 1997
filing date -
Jun 26, 1997
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Abstract
A method and apparatus is provided for dispersion mapping that yields improved transmission performance for optical transmission systems by providing a more optimal balance between the reduction of both accumulated chromatic dispersion and nonlinear mixing. In particular, the chromatic dispersion is arranged on both a short length scale (within one amplification period) and a long length scale so that the average dispersion returns to zero. The dispersion management within one fiber span is arranged so that the magnitude of the dispersion is large in the section of the fiber span in which the optical power is large and is small in the section of the fiber span in which the optical power is small. This arrangement reduces both the amount of nonlinear mixing and the accumulated chromatic dispersion within the given fiber span.
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