Title :
Design and fabrication of high gain-efficiency erbium-doped fiber amplifiers
Author :
Zervas, M.N. ; Laming, R.I. ; Townsend, J.E. ; Payne, D.N.
Author_Institution :
Optoelectron Res. Center, Southampton Univ., UK
Abstract :
The gain efficiency of a fully optimized erbium-doped fiber amplifier (EDFA) is calculated as a function of the fiber numerical aperture and dopant confinement in the core and is shown to agree well with experimental data. A gain efficiency of 8.9 dB/mW is demonstrated. This is the best reported value to date for modified chemical vapor deposition (MCVD) fibers. In addition, the detrimental effect of pump and signal background losses on the optimal gain efficiency is considered in detail.<>
Keywords :
chemical vapour deposition; erbium; fibre lasers; germanate glasses; optical design techniques; optical fibre fabrication; optical glass; optical losses; EDFA; Er-doped fibre amplifier fabrication; GeO/sub 2/-SiO/sub 2/:Er/sup 3+/; core; dopant confinement; fiber numerical aperture; fibre amplifier design; high gain-efficiency; modified chemical vapor deposition; optimal gain efficiency; pump background losses; signal background losses; Absorption; Erbium-doped fiber amplifier; High power amplifiers; Optical device fabrication; Optical fiber amplifiers; Optical fiber communication; Power system reliability; Preamplifiers; Signal design; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
