Ultimate spectral efficiency of information transmission as the figure of merit of host materials of EDFA

✍ Scribed by M. A. Khodasevich; Yu. A. Varaksa

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 80 KB
• Volume: 2
• Category: Article
• ISSN: 1612-2011
• DOI: 10.1002/lapl.200510043

✦ Synopsis

The exact ``quantum limit'' value of noise figure of
EDFA in the high gain regime at quasi-two-level pumping is
determined on the base of the McCumber theory. It is shown that in
the unsaturated gain regime the ultimate spectral efficiency of
information transmission depends on host material of EDFA and can
serve as a figure of merit for comparison of host fibers.