Numerical study of a harmonic mode-locked semiconductor optical amplifier fiber ring laser |
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| Authors: | Fei Wang Haitao Chen Wenyan Yang Zhengmao Wu Guangqiong Xia |
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| Affiliation: | aSchool of Mathematics and Physics, Chongqing Institute of Technology, Chongqing 400050, China;bBasic Department, The Chinese People's Armed Police Forces Academy, Hebei Langfang 065000, China;cDepartment of Mathematics and Physics, Chongqing University of Science and Technology, Chongqing 400050, China;dSchool of Physics, Southwest University, Chongqing 400715, China |
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| Abstract: | An improved harmonic mode-locked Semiconductor optical amplifier (SOA) fiber ring lasers has been presented and numerically investigated based on the self-reproduction theory. The numerical result shows that a narrower optical pulse train with a more symmetrical-temporal shape can be obtained, when the modulation SOA is DC biased on high current, whereas the gain SOA is DC biased on the low current functions as a gain compensator in the experimental setup. Also, the system parameters effects on the characteristic of the harmonic mode-locked pulse have been investigated. |
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| Keywords: | Laser technique Fiber laser Harmonic mode locking Semiconductor optical amplifier Cross-gain modulation |
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