Abstract
A multi-wavelength single-longitudinal-mode (SLM) Brillouin–erbium fiber laser has been proposed and demonstrated by using the broadband linear gain and the narrow band gain of stimulated Brillouin scattering both in Er-doped fiber. Eight orders of lased Stokes have been observed with relatively uniform amplitudes and rigid spacing of 11 GHz. Each Stokes frequency works on SLM operation owing to very short oscillating cavity. The output signal-to-noise ratio is as high as 50 dB. The hybrid gain of two mechanisms in Er-doped fiber is helpful to improve the flatness of the multi-wavelength combs.
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