A widely tunable fiber ring laser with closed loop control based on high-precision stepper motor |
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Authors: | WANG Li-li XIN Xiang-jun and ZHU Lin-wei |
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Affiliation: | School of Information and Electrical Engineering, Ludong University, Yantai 264025, China;School of Electronic Engineering, Beijing University of Posts &Telecommunication, Beijing 100876, China;School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264025, China |
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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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