Few-mode multi-element fiber amplifier for mode division multiplexing.
We experimentally demonstrate a few-moded cladding-pumped multi-element fiber amplifier, comprising 4 Er/Yb co-doped signal fibers and 1 multimode pump-delivery fiber all of which are drawn together in a common polymer coating, providing a total spatial path multiplicity of 12. An average WDM signal gain of 18.3 dB and differential modal gain of 1.1 dB were achieved in the spectral range of 1542-1560 nm.
S
S
Jain
Y
Y
Jung
T C
TC
May-Smith
S U
SU
Alam
J K
JK
Sahu
D J
DJ
Richardson
D000669:Amplifiers, Electronic; D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation*; D053844:Lasers, Solid-State; D055100:Optical Fibers