In Chapter three, starts with a brief introduction of the FOPA and wavelength conversion theory.

第三章，从光参量过程原理入手，简要介绍了光纤参量放大与波长变换原理。

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Theory and experiment show that bandwidth of FOPA depends on pumping wavelength and pumping power, optical fiber nonlinear coefficient as well as dispersion characteristics.

理论和实验研究表明，参量放大的带宽取决于泵浦波长和泵浦功率、光纤非线性系数、光纤的色散特性。

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