We demonstrate room-temperature operation of a spacing-adjustable multi-wavelength erbium-doped fiber laser using stimulated Brillouin scattering. With the use of an intra-cavity birefringent loop mirror filter, the laser output wavelengths can be well defined without applying an external Brillouin pump. By adjusting the comb spacing of the filter, a wide range of mode spacings can be obtained to support the oscillations of up to 49 output wavelengths.
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Fok et al. (2006) studied this question.
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