Abstract
We describe a few-mode erbium-doped fiber amplifier with ring-doped erbium doping profile fiber and optimized optical setup amplifying LP01, LP11, and LP21 modes, simultaneously. Spectral and modal gain distribution is characterized as well as modal crosstalk. We study the gain evolution of every mode in several configurations, changing the input power or the number of injected modes. The gain is above 13 dB for all modes and its differential modal gain is lower than 5.7 dB across the whole C-band with a 3.5-m-long erbium-doped fiber when using a pump at 630 mW. As a proof of concept, we transmit up to five modes carrying each a PDM-QPSK signal at 32 Gbd through this amplifier.
© 2015 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