supported by the National Natural Science Foundation of China(Nos.60907020,91338116,and 61007046);the Key Science and Technology Project of Changchun(No.13KG31)
We propose and experimentally demonstrate a multi-wavelength thulium-doped fiber(TDF) laser based on all-fiber Mach–Zehnder interferometer(MZI) at 1.9 mm. Here a segment of 4 m single-mode TDF is pumped by 1568 n...