The optical modulation characteristics, differential gain (DG), differential phase (DP) and signal-to-noise ratio (S/N) are described as well in this paper.
文中论述了光调制特性、微分增益（DG）、微分相位（DP）、信噪比（S/N）等重要问题。
Experimental results show the optical re-constructed image and numerical reconstructed image are similarity, thus the accuracy of phase modulation characteristics is verified.
实验结果表明，光学再现像与数值模拟结果相吻合，从而验证了纯相位调制特性测量的准确性。
Semiconductor optical amplifier (SOA) is very fit for all optical modulation format conversion due to its high nonlinear characteristics, lower switch power and small size.
半导体光放大器(SOA)由于具有高非线性特性、低开关功率和尺寸较小等优点，非常适合用来实现全光码型转换。
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