提出了一种基于单壁碳纳米管/聚酰亚胺复合材料薄膜和马赫曾德尔型滤波器的多波长被动锁模掺铒光纤激光器。该环形腔掺铒光纤激光器以980 nm的激光二极管作为抽运源，3.2 m掺铒光纤作为增益介质，单壁碳纳米管作为可饱和吸收锁模器件。增加抽运功率到24 mW时，得到中心波长为1559.3 nm，3 dB谱宽为1.4 nm，平均输出功率为0.8 mW的脉冲激光输出。然后在环形腔中，接入马赫曾德尔型滤波器作为多波长选择器件，通过调整马赫曾德尔型滤波器两臂光纤长度差，在室温下得到了3 dB带宽内稳定的15个波长激光脉冲输出，波长间隔为0.1 nm，连续0.5 h观察，脉冲激光输出稳定。

Novel multi-wavelength passively mode-locked erbium-doped fiber laser based on single-walled carbon nanotube/polyimide film and Mach-Zehnder filter is proposed. A 3.2-m length of erbium-doped fiber acts as a gain medium. It is forward pumped by a 980-nm laser diode. The single-walled carbon nanotubes acts as mode locking devices. When pump power adds to 24 mW, the laser produces a stable pulse train with central wavelength of 1559.3 nm, 3 dB spectral width of 1.4 nm and average power of 0.8 mW. Then the Mach-Zehnder filter is introduced in the ring cavity as a comb filter. When the pump power is 25 mW, a stable 15-wavelength laser pulse is obtained by adjusting the polarization controller at the room temperature. The wavelength interval is 0.1 nm. The fiber laser can obtain stable multi-wavelength pulse train after continuous observation over 0.5 h.