Abstract
A nonlinear polarization rotation (NPR) based mode-locked fiber laser is demonstrated using a 2m long erbium-doped Zirconia–Yttria–Allumino Silicate fiber (EDZF) as the gain medium. The EDZF is drawn from a silica preform fabricated using the Modified Chemical Vapor Deposition (MCVD) method in which glass modifiers and nucleating agents are added using the solution doping technique. The fabricated EDZF has a core with dopant concentrations of 0.25mol% of Al2O3, 2.10mol% of ZrO2 and 0.23mol% of Er2O3, peak absorption of 22.0dB/m at 978nm and the fluorescence life-time of 10.86ms. A stable picosecond laser is succesfully obtained with pulse width of 0.32ps and the repetition rate of 50MHz using a simple ring cavity.
Published Version
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