报道了一个全光纤主振荡功率放大（MOPA）结构的窄线宽掺铥连续光纤激光器，该高功率光纤激光器由窄线宽连续光纤激光种子源和两级包层抽运掺铥光纤放大器组成。激光种子源经过两级双包层掺铥光纤放大器后，最大平均输出功率为120 W，功率放大器的斜率效率高达60%，输出激光的中心波长为1986 nm，3 dB光谱带宽为0.48 nm，平均输出功率未能进一步提高仅受限于最大抽运功率。此外，利用该两级掺铥光纤放大器，得到了平均输出功率为122 W的宽带超荧光光源，放大后的超荧光源的中心波长为1990 nm，3 dB光谱带宽为25 nm。

An all-fiber continuous-wave thulium-doped fiber laser with narrow linear width based on a master oscillator power amplifier (MOPA) system that consists of a seed source and two-stage thulium-doped all-fiber amplifiers pumped by fiber-pigtailed multimode diodes at 793 nm is reported. The maximum output power is 120 W with a slope efficiency of 60% after the seed source amplified by a two-stage thulium-doped amplifier. The center wavelength is 1986 nm and 3 dB spectral width is only 0.48 nm. The maximum output power is currently limited by available pump power. In addition, a broadband thulium-doped superfluorescent source with average output power of 122 W based on the same MOPA configuration is reported. The center wavelength is 1990 nm and 3 dB spectral width is 25 nm.