Two-stage high-power L-band superfluorescent fiber source

A two-stage high power L-band superfluorescent fiber source consisting of a double-pass forward Er-doped amplified spontaneous emission (ASE) seed source and a double-pass Er/Yb co-doped fiber amplifier is obtained. Output power is 216 mW and conversion efficiency is 13.7%. The ASE seed source benefit improving output spectrum and preventing from lasing. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 46: 389–391, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20996