Abstract
A compact tunable single-mode fiber laser at 1535 nm is developed by use of a novel combination of high-gain erbium:ytterbium (Er:Yb) phosphate-glass fiber within a fiber Fabry-Perot cavity. We demonstrate what we believe to be the shortest Er:Yb phosphate-glass fiber Fabry-Perot laser ever reported, having a 100-microm cavity length and a continuous wavelength tuning range over 4.52 nm (limited by the sharp fiber gain peak). An alternative three-mirror laser design has also demonstrated single-mode lasing operation.
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