  The common and traditional method for dispersion compensation in optical
domain is concatenating the transmit optical fiber by a compensating optical
fiber having high-negative dispersion coefficient. In this paper, we take an
opposite direction and show how an optical fiber with high-positive dispersion
coefficient can also be used for dispersion compensation. Our optical
dispersion compensating structure is the optical implementation of an iterative
algorithm in signal processing. The proposed dispersion compensating system is
constructed by cascading a number of compensating sub-systems and its
compensation capability is improved by increasing the number of embedded
sub-systems. We also show that the compensation capability is a trade-off
between transmission length and bandwidth. We use simulation results to
validate the performance of the introduced dispersion compensating module.
Photonic crystal fibers with high-positive dispersion coefficient can be used
for constructing the proposed optical dispersion compensating module.
