报道了一种基于色散补偿光纤内的马赫-曾德干涉效应的掺铒光纤环形激光器，得到了稳定的多波长激光输出。这种干涉效应有效地抑制了由均匀谱线展宽效应引起的不稳定的模式竞争，从而在室温下能够得到稳定的多波长激光输出。双波长激光输出比较稳定，峰值波动约小于1.1 dB，而三波长激光输出的峰值波动约为4 dB。

Stable multi-wavelength lasing based on in-fiber Mach-Zehnder interferometer (MZI) introduced by dispersion compensation fiber (DCF) in an erbium-doped fiber ring laser is presented. This interference effect effectively suppresses the unstable mode competition caused by homogeneous line broadening which leads to the generation of stable multi-wavelength lasing at room temperature. The dual-wavelength lasing is so stable and the peak fluctuation is less than about 1.1 dB, while the peak fluctuation of the tri-wavelength lasing is much larger with a value of about 4 dB.