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A stable high signal to noise ratio (SNR) narrow linewidth linear cavity single-wavelength Er-doped fiber laser is reported. In the experiment, we used a fiber Bragg grating Fabry-Perot (FBG F-P) etalon and a Fiber Loop Mirror (FLM) as the reflectors of the laser cavity, and used a length of 4m Er-doped fiber as the saturable absorber to suppress mode hopping and stabilize frequency effectively. An...
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