Abstract
A variable gain erbium-doped fiber amplifier (EDFA) with a wide gain range and a
small noise figure (NF) variation is analyzed numerically and demonstrated
experimentally. The EDFA can change the total erbium-doped fiber length by selecting six
combinations of three EDFs with optical switches (SWs). The numerical calculation of the
NF and the pump power using the analytical model of an EDFA indicates that such a
variable gain EDFA has an advantage over a conventional multi-stage EDFA in terms of NF
variation and required pump power. These characteristics are demonstrated by
constructing a variable gain EDFA that employs SWs and variable optical attenuators
(VOAs) integrated on a silica-based planar lightwave circuit (PLC). The variable gain
EDFA exhibits a smaller NF variation of 1.2 dB for the 24-dB variable gain range than
conventional two- and four-stage EDFAs, which have NF variations of 12.6 and 2.0 dB,
respectively, for the same variable gain range. The power consumption of these EDFAs is
also discussed by comparing the operating electric power of the SWs and VOAs with that
of the pump laser.
© 2013 IEEE
PDF Article
More Like This
32-core erbium/ytterbium-doped multicore fiber amplifier for next generation space-division multiplexed transmission system
Saurabh Jain, Carlos Castro, Yongmin Jung, John Hayes, Reza Sandoghchi, Takayuki Mizuno, Yusuke Sasaki, Yoshimichi Amma, Yutaka Miyamoto, Marc Bohn, Klaus Pulverer, Md. Nooruzzaman, Toshio Morioka, Shaiful Alam, and David J. Richardson
Opt. Express 25(26) 32887-32896 (2017)
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