Abstract
Previously, we proposed a field-coupling model for propagation in
graded-index multimode fiber (MMF), analogous to the principal states model
for polarization-mode dispersion (PMD) in single-mode fiber. That model was
based on the concept of first-order principal modes, which have well-defined
group delays that depend on the strength of the mode coupling. That
first-order model predicts a linear relationship between the intensity
waveforms at the MMF input and output. Here, we extend that model to account
for higher order modal dispersion. The higher-order model predicts several
effects analogous to higher-order PMD: pulse broadening, filling-in between
peaks of the pulse response, depolarization and pattern blurring at the MMF
output, and a nonlinear relationship between input and output intensity
waveforms.
© 2009 USGov
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