We show that a saturated semiconductor optical amplifier reduces the amplitude noise of phase-coded signals without adding excess phase noise in presence of an additional CW beam with proper power. Pass-through and four-wave-mixing converted signals exhibit significant improvement of the BER threshold margin for 10 Gb/s NRZ DPSK data.
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机译：我们表明，在具有适当功率的附加CW光束存在的情况下，饱和的半导体光放大器可以降低相位编码信号的幅度噪声，而不会增加过多的相位噪声。对于10 Gb / s NRZ DPSK数据，直通和四波混频转换信号表现出BER阈值裕度的显着提高。
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