Title :
Performance of a distributed erbium-doped dispersion-shifted fiber amplifier
Author :
Simpson, Jay R. ; Shang, Hen-Tai ; Mollenauer, Linn F. ; Olsson, N. Anders ; Becker, Phil C. ; Kranz, Karen Schnoes ; Lemaire, Paul J. ; Neubelt, Michael J.
Author_Institution :
AT&T Bell Labs., Murray Hill, NJ, USA
fDate :
2/1/1991 12:00:00 AM
Abstract :
Continued improvements in the performance of a multi-kilometer, low-erbium-concentration fiber amplifier made by the modified chemical vapor deposition (MCVD) seed fiber method are discussed. Transparency for a -20-dBm signal at 1.55 μm and fiber length of 11.8 km was achieved with 20 mW of 1.48-μm copropagating pump power. The wavelength dependence of the gain for this signal level is reported, and the distribution in small signal gain along a 22-km length using an optical domain reflectometer (OTDR) was measured. Simulations are presented to show the effect of erbium concentration, input signal level, and pump power required for transparency of a 50-km span
Keywords :
chemical vapour deposition; erbium; fibre lasers; optical communication equipment; optical dispersion; optical testing; optical workshop techniques; time-domain reflectometry; 1.48 micron; 1.55 micron; 11.8 km; 20 mW; 22 km; 50 km; Er:fibre amplifier; MCVD; copropagating pump power; distributed erbium-doped dispersion-shifted fiber amplifier; fiber length; input signal level; low Er concentration; modified chemical vapor deposition; optical domain reflectometer; seed fiber method; small signal gain; transparency; wavelength dependence; Distributed amplifiers; Erbium-doped fiber amplifier; Optical amplifiers; Optical distortion; Optical fiber amplifiers; Optical fiber dispersion; Optical fiber polarization; Optical solitons; Pulse amplifiers; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
