Abstract
A novel and improved waveband-switchable fiber laser based on a semiconductor optical amplifier and sampled fiber Bragg gratings is proposed using high polarization selectivity of a polarization beam splitter. A multiwavelength-switching operation of five laser lines with 0.8-nm wavelength spacing, whose switching displacement was ∼ 7 nm, has been successfully demonstrated. The switching displacement between wavebands, wavelength channels, and their spacings can be flexibly determined by the selected comb filters.
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