提出一种结构简单有效的多波长窄线宽掺铒光纤激光器，该结构激光器以阵列波导光栅作为梳状滤波器，以光环形器作为全反射腔镜，解决了传统线型腔掺铒光纤激光器中的模式竞争以及两个布拉格波长对准的问题。基于此结构，设计并制作出了一个双波长窄线宽掺铒光纤激光器。实验表明：该激光器在室温下可实现1554.872 nm和1555.671 nm处双波长输出，平均输出光功率分别为-9.7 dBm 和-9.6 dBm，光谱半峰全宽(FWHM)小于0.010 nm，边模抑制比大于50 dB，具有良好的波长稳定性和功率稳定性。该方案为多波长光纤激光器的制作提供了一个良好的选择。

A novel multi-wavelength erbium-doped fiber laser with narrow-line-width lasing output is proposed and demonstrated using arrayed-waveguide grating (AWG) and optical circulator (OC). Wavelength competition and consistency are naturally prevented in this kind of laser by using AWG as comb filter and OC as completely reflecting mirror in the linear-cavity. As an example, a dual-wavelength erbium-doped fiber laser is experimentally investigated. Using the laser scheme, the proposed laser can generate two wavelengths simultaneously. The fiber laser realizes the optical side-mode suppression ratio of over 50 dB and the average output power of -9.7 dBm and -9.6 dBm at 1554.872 nm and 1555.671 nm, respectively. The full width at half maximum (FWHM) of the spectrum of each laser is less than 0.010 nm. Moreover, the output power stability of the laser has also been measured and analyzed. Experiment results show that the laser can operate in stable narrow-line-width with dual-wavelength output at room temperature.