Abstract
We demonstrate a novel kind of dense dispersion-managed fiber line, which gradually decrease not only local dispersion in each fiber segment, but also averaged dispersion in every dispersion compensation cell during an amplified period. When an amplifier period contains several or more dispersion compensation cell ( L a / L c >> 1), short dispersion compensation period can greatly reduce the degree of optical pulse breathing and interaction between neighboring pulse. Loss can make the Kerr effect becomes weaker when optical pulse propagating in an optical amplified length, so better counterbalance between dispersion and nonlinear effect can be obtained by appropriately reducing local and averaged dispersion parameter. Some results show that this kind of optical fiber links have some excellent advantages over constant local and averaged dispersion system, can greatly improve the performance on high speed optical fiber transmission system.
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