A generalized time-domain model for nonlinear inter-satellite microwave photonics links under dual-tone modulation |
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Authors: | Zihang Zhu Shanghong ZhaoYongjun Li Xingchun ChuXiang Wan Guhao Zhao |
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Institution: | College of Information and Navigation, Xi?an 710077, China |
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Abstract: | A generalized time-domain model is presented for the evaluation of nonlinear distortion effects in inter-satellite microwave photonics links using a dual-drive Mach-Zehnder modulator (DD-MZM) under dual-tone modulation. The model results in simple exact expressions for any harmonic and inter-modulation components at the output of the detector which can be applied to almost all operating conditions of DD-MZM, providing useful information to select system parameters for the performance optimization. Two special cases, double sideband and single sideband modulation, are studied in detail. Numerical results for the third-order inter-modulation distortion ratio (IMR3) are well matched with the analysis ones. |
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Keywords: | Nonlinear distortion Mach-Zehnder modulator Inter-satellite microwave photonics links Dual-tone modulation |
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