Abstract
In previous work, we studied the compensation of modal dispersion in
multimode fiber (MMF) using several different configurations of optical
systems that can control the amplitude, phase and polarization of the
launched field. In that work, we assumed knowledge of a fiber's principal
modes (PMs) and their group delays (GDs), enabling us to compute the optimal
settings of the optical system. In practice, however, we do not have prior
knowledge of the PMs and their GDs. In this paper, for three of the
configurations, we propose algorithms for setting the optical system
adaptively, based upon measurements of the eye opening. We present
simulations showing that in the absence of noise, the performance of the
adaptive solution approaches that of the optimal solution, and
characterizing the algorithms' convergence speed and tolerance to noise. We
present experiments using a particular configuration and adaptive algorithm,
demonstrating their effectiveness in 10-Gb/s transmission through up to 2000
m of 50-$\mu$m-core graded-index MMF.
© 2010 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