Highly optimized tunable Er/sup 3+/-doped single longitudinal mode fiber ring laser, experiment and model

A continuous wave (CW) tunable diode-pumped Er/sup 3+/-doped fiber ring laser, pumped by diode laser at wavelengths around 1480 nm, is discussed. Wavelength tuning range of 42 nm, maximum slope efficiency of 48% and output power of 14.4 mW have been achieved. Single longitudinal mode lasing with a linewidth of 6 kHz has been measured. A fast model of erbium-doped fiber laser was developed and used to optimize output parameters of the laser.<
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