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We investigate the spectra of the gain and pump-to-signal relative intensity noise (RIN) transfer in silicon optical parametric amplifier (SOPA) combined with Raman effect,and draw a conclusion that Raman effect makes the spectra fluctuant.narrow as well as asymmetric.Moreover,the influences of the related parameters in SOPA on the gain and the pump-to-signal RIN transfer characteristics are also discussed.The high gain and low pump-to-signal RIN transfer can be obtained by the appropriate parameters of pump and silicon waveguide.