This paper demonstrates a stable, broad-band two-stage superfluorescent source at 1.55 m consisting of an erbium-doped fiber (EDF) seed source and a high-power Er-Yb fiber amplifier. The source exhibited from 140 to 220 mW of power, 18 to 28 nm bandwidth, with an estimated mean wavelength stability from 1 to 10 ppm. Operating conditions for the seed source and amplifier required to achieve these performance characteristics are described.
Dominique M. Dagenais, Lew Goldberg, Robert P. Moeller, and William K. Burns, "Wavelength Stability Characteristics of a High-Power, Amplified Superfluorescent Source," J. Lightwave Technol. 17, 1415- (1999)