A stable dual-wavelength erbium-doped fiber laser is proposed and experimentally demonstrated. The mode competition in the gain medium was suppressed by enhancing the polarization hole burning mechanism through incorporation of polarization maintaining erbium-doped fiber and nonlinear polarization rotation. The fiber laser displayed high stability with lasing side-mode suppression ratios of 60.69 and 60.57 dB. Additionally, the negligible peak power fluctuation of 0.01 dB was achieved at 1557.17 and 1560.19 nm with both peak powers of 0.23 mW and 3-dB bandwidth of 0.028 and 0.025 nm, respectively. These findings provide insights for an enhanced seed laser source design for remote dual-wavelength fiber laser applications.

提出并实验证明了稳定的双波长掺fiber光纤激光器。通过掺入保偏polarization掺杂光纤和非线性偏振旋转增强偏振孔烧制机制，抑制了增益介质中的模式竞争。光纤激光器显示出高稳定性，激光旁模抑制比为60.69和60.57 dB。此外，在1557.17和1560.19 nm处可忽略的0.01 dB峰值功率波动，两个峰值功率分别为0.23 mW和3-dB带宽分别为0.028和0.025 nm。这些发现为远程双波长光纤激光器应用中增强的种子激光源设计提供了见识。