Preparation and ASE Spectrum of a Single-Mode Erbium Doped Tellurite Glass Fiber with D-type Cladding Geometry

Based on the host of tellurite glasses, the glass formation, preform manufacture, and fiber fabrication are described. The characterization of amplified spontaneous emission (ASE) from this newly fabricated single-mode Er3 -dopedtellurite fibers is also presented. When pumped at 980 nm, a very broad erbium ASE around 1.53μm was observed. The variations of ASE with fiber length and pumping power are measured and discussed. The output of 2 mW from Er3 -doped tellurite fiber ASE source was obtained under the pump power of 660 mW.