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介绍了一种采用马赫－曾特尔干涉仪结构实现调Ｑ的光纤激光器．其中，马赫－曾特尔干涉仪由两个３ｄＢ耦合器和两段光纤（作为干涉仪的双臂）构成．在泵浦功率为３０ｍＷ时，得到了稳定的激光输出，最高脉冲功率达２．６Ｗ，平均功率为１ｍＷ．当重复频率低于１ｋＨｚ时，在１５５７ｎｍ波长处得到光脉冲，半宽为４．２μｓ．此外，在调Ｑ脉冲包络内观察到了自锁模现象．
A fiber laser with Q-switched Mach-Zehnder interferometer structure is introduced. Among them, the Mach-Zentrum interferometer consists of two 3dB couplers and two sections of fiber (arms as interferometer). At a pump power of 30mW, a stable laser output was obtained with a maximum pulse power of 2.6W and an average power of 1mW. When the repetition rate is below 1 kHz, an optical pulse is obtained at a wavelength of 1557 nm with a half width of 4.2 μs. In addition, a self-mode-locked phenomenon was observed in the Q-switched pulse envelope.