Archive > Volume 12 Issue 3 > 2016,12(3):169-172. DOI:10.1007/s11801-016-6033-2 CSTR:[cstr] Prev Next
A widely tunable fiber ring laser with closed loop control based on high-precision stepper motor
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Abstract:
A tunable single-longitudinal mode erbium-doped fiber ring laser based on stepper motor and closed loop control is proposed and demonstrated. The system consists of an erbium-doped fiber (EDF), a tunable fiber Bragg grating (FBG) filter and a wavelength detector. The characteristics of output laser, such as output power, power stability and 3-dB linewidth, are investigated in the operation range of 1 531—1 569 nm. The repeated experimental results of the fiber laser show that the 3-dB linewidth is less than 17 ps, the side-mode suppression ratio (SMSR) is up to 60 dB, the output power is up to 1.37 dBm, and the power variation is less than 0.61 dB.
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