We demonstrate Brillouin lasing in a single-mode tellurite fiber. A peak value of Brillouin gain coefficients of is measured on the basis of gain characteristics. An all-fiber Brillouin laser with a maximum unsaturated power of at and a slope efficiency of 38.2% are achieved from a tellurite fiber by employing a ring cavity. In addition, a tunable Brillouin comb tellurite fiber laser is demonstrated.
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