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中文摘要：
报道了高功率全光纤结构2．0μm波段宽带超荧光光源。超荧光种子源采用双包层掺铥光纤作为增益介质，中心波长为790nm的多模半导体激光器作为抽运源，获得了稳定的中心波长为1952nm的宽带超荧光输出，最大输出功率为220mW，3dB光谱带宽为40nm。超荧光种子源经过一级双包层掺铥光纤放大器后，输出功率达到了2．6W，光纤放大器斜率效率为46％，相应的光谱范围为1900-2100nm，3dB光谱带宽为33nm。
英文摘要：
A high power 2.0 μm thulium-doped broadband amplified spontaneous emission （ASE） source is reported by using an all-fiber master oscillator power-amplifer （MOPA） configuration. The ASE seed source produces average output power of about 220 mW by using a segment of thulium-doped double-clad fiber pumped by fiber-pigtailed multimode diodes at 790 nm. The center wavelength and the 3 dB bandwidth are 1952 nm and 40 nm, respectively. A thulium-doped all-fiber amplifier is used to boost average output power to 2.6 W with a slope efficiency of 46 % with respect to the launched pump power. The emission spans the wavelength range from 1900 nm to 2100 nm with a 3 dB bandwidth of 33 nm, and the maximum output power of the ASE fiber amplifier is currently limited by available pump power.
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