Abstract

We propose and demonstrate a novel single-longitudinal-mode (SLM) dual-wavelength erbium-doped fiber ring laser incorporating a semiconductor optical amplifier. The SOA biased in its low-gain regime greatly reduces the gain competition of the two wavelengths. The stable SLM operation is guaranteed by a passive triple-ring cavity and a fiber Fabry–Perot filter. The dual-wavelength output with a 40GHz wavelength spacing is switchable in the range of 15331565.4nm.

© 2008 Optical Society of America

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