Abstract
This paper presents an experimental study of broadband mid-IR amplification that is carried out, for the first time, to the best of our knowledge, in an erbium-doped tungsten tellurite fiber. A simple, robust supercontinuum source based on a tapered germanate fiber is developed as a seed input in the region of 1.5-3µm. We show that gain by a factor of 5 on one pass can be achieved in the 2.7µm range by pumping a low-cost, high-efficiency diode laser at 976nm using high-purity tellurite glass fibers.
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