Erbium Doped Optical Fiber, Low Cost Metro EDFA

The gain spectrum of F-EDF-5 (manufacturer P/N M-15(980/125)) is an ideal simple and low-cost erbium doped fiber that provides consistent and efficient gain in single-stage, few channel-count designs. The fiber suits especially well for Metro EDFA applications. F-EDF-5 is doped to provide a nominal 10-15 dB/m absorption at 980 nm. This relatively high level of doping offers more than twice the levels of pump absorption of many other erbium doped fibers, with a corresponding reduction in gain-length and material cost. A wide pump range and high absorption specification makes it a cost-effective solution with a minor increase in sensitivity to length or variations in absorption.