Analytical Characterization on Pulse Propagation in a Semiconductor Optical Amplifier Based on Homotopy Analysis Method
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Starting from the basic equations describing the evolution of the carriers and photons inside a semiconductor optical amplifier (SOA), the equation governing pulse propagation in the SOA is derived. By employing homotopy analysis method (HAM), a series solution for the output pulse by the SOA is obtained, which can effectively characterize the temporal features of the nonlinear process during the pulse propagation inside the SOA. Moreover, the analytical solution is compared with numerical simulations with a good agreement. The theoretical results will benefit the future analysis of other problems related to the pulse propagation in the SOA.
KeywordsSemiconductor optical amplifier pulse propagation homotopy analysis method series solution
This work was supported in part by the National Natural Science Foundation of China (Grant No. 61106062), the Scientific Research Fund of Shaanxi Provincial Education Department (Grant No. 16JK1016), and the project of Anakang University (Grant No. 2017AYQN06).
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