High speed optical fiber transmission performance is severely degraded due to chromatic dispersion in the fiber. Contrary to conventional dispersion compensation techniques by dispersion compensated fiber, in this work electronic compensation techniques are investigated to mitigate chromatic dispersion in a phase modulated optical coherent detection system. Such electronic compensation techniques add flexibility to the dynamically routed optical networks. Performances of electronic mitigation techniques of chromatic dispersion are compared and their applicability limits are evaluated. © 2013 IEEE.