Abstract
AbstractWe propose and demonstrate a novel, all‐fiber and wavelength tunable Er3+/Yb3+ co‐doped cladding‐pumped fiber‐ring laser, which utilized amplified spontaneous emission (ASE) as a secondary source so that it can operate in L‐band. The lasing threshold can be reduced to 30% by reflecting backward C‐band ASE into the same Er3+/Yb3+ co‐doped fiber (EYDF) using a fiber Bragg grating (FBG). By using a two‐section high‐birefringence fiber‐loop mirror (HiBi‐FLM) as the tunable wavelength filter, the tuning‐wavelength range can be up to 60 nm, from 1559.2 to 1619.4 nm, and the output power excursion of the laser at different wavelengths can be less than 0.2 dB. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 892–895, 2006; Published online in Wiley InterScience (www.interscience.wiley.com) DOI 10.1002/mop.21509
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