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分析了半导体光放大器中双折射对基于半导体光放大器的干涉型器件性能的影响 ,对基于半导体光放大器的马赫曾德尔型波长转换器的理论计算表明 ,当半导体光放大器有双折射存在时 ,消光比不仅要比无双折射时的要低 ,而且还随着探测光的偏振态而改变 ,变化幅度可大于 10dB。提出了减小双折射对干涉型器件影响的方案 ,并且分析了实现对增益和对相位变化同时具有偏振不灵敏的半导体光放大器的可能性。
The influence of birefringence in the semiconductor optical amplifier on the performance of the semiconductor optical amplifier based interferometer is analyzed. The theoretical calculation of the Mach-Zehnder-type wavelength converter based on the semiconductor optical amplifier shows that when the semiconductor optical amplifier has the birefringence, the extinction Not only lower than uninhibited refraction but also with the polarization of the probe light, which can vary by more than 10 dB. A scheme of reducing the influence of birefringence on the interference type device is proposed, and the possibility of realizing a semiconductor optical amplifier having polarization insensitivity to both gain and phase change is analyzed.