Abstract
First-order polarization-mode dispersion (PMD) compensation by means
of a polarization controller and a differential delay line is not
sufficient to guarantee error-free transmission for 40-Gb/s channels when
higher order effects severely increase signal distortion. Higher order
mitigation is possible by cascading more than one first-order block.
However, only two-stage or three-stage devices remain simple enough to be
actually controlled. The performance of such higher order PMD compensators
is evaluated by means of numerical simulations. Two different feedback
signals have been used, demonstrating that first-order and higher order
PMD distortion of nonreturn-to-zero (NRZ) pulses at 40 Gb/s can be
strongly mitigated for instantaneous values of the differential group
delay (DGD) up to the bit slot, when the compensator is properly
controlled.
[IEEE ]
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription