The effect of phase mismatch on two-pump fiber optical parametrical amplifier |
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Authors: | Mingyi Gao Chun Jiang Weisheng Hu Jingjing Zhang Jingyuan Wang |
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Institution: | aState Key Laboratory of Advanced Optical Communication Systems & Networks, Shanghai Jiao Tong University, Shanghai 200030, China |
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Abstract: | In the paper, the effect of phase mismatch on two-pump fiber optical parametric amplifier is investigate based on analytic solutions of parametric gain. The phase mismatch is mainly induced by the fiber losses, the fourth-order dispersion and zero-dispersion wavelength fluctuations. The fiber losses reduce the pump powers resulting in a fall of the parametric gain, and make the phase mismatch vary with propagation distance leading to an obvious gain ripple. When the fiber losses are taken into account, the fourth-order dispersion produces a deeper ripple on the parametric gain and deteriorates the gain flatness. Zero-dispersion wavelength fluctuations result in variations of gain spectrum, and the long-scale fluctuations are more devastating than the short-scale ones. |
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Keywords: | Phase mismatch Zero-dispersion wavelength fluctuations Gain flatness |
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