Abstract
Homogeneous line broadening suppression and supermode noise reduction in a multiwavelength actively mode-locked erbium-doped fiber ring laser are investigated. By incorporating a semiconductor optical amplifier that is biased to operate just above the transparent point, the gain spectral hole burning of the erbium-doped fiber ring laser is effectively suppressed and the supermode noise is significantly reduced. Active mode locking of 8 wavelengths at room temperature with improved noise figure is demonstrated.
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