Abstract
In high-capacity metro networks, fiber Bragg gratings (FBGs)
offer a potentially cost-effective solution for compensation of
chromatic dispersion (CD). However, FBGs suffer from stochastic
variations of their group delay, the so-called group delay ripple
(GDR). We propose a novel statistical model to describe the effects
of stochastic variations of GDR. The statistical properties of our
model are verified by comparison to measurement data and Monte Carlo
simulations as well as Multicanonical Monte Carlo (MMC) simulations.
Results indicate that without further measures to counteract the GDR
distortions, very large penalties ( >10 dB) for the optical
signal-to-noise ratio (OSNR) occur frequently at a bitrate of 112
Gbit/s. Thus, we investigated the performance of short and
cost-effective optical finite and infinite impulse response
equalizer structures to mitigate the GDR distortions and to enhance
the signal quality. With the use of optical equalizers (which can be
realized as planar lightwave circuits) we were able to reduce the
mean OSNR penalty due to the GDR to less than 0.1dB. We also
demonstrate that the same filter structures can efficiently be used
to mitigate all-order PMD distortions as well.
© 2011 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
Add to BibSonomy