【摘要】 相位生成载波技术是用于光纤传感器中很重要的一种信号解调方法。简要说明了相位生成载波调制的原理和两种基本的调制方法 ,着重介绍了相位生成载波调制信号的解调方法 ,包括 :零差法、伪外差法和合成外差法 ,并对以上各种方法进行了分析比较。对相位生成载波技术在干涉型光纤传感器中的应用作了详细的介绍。针对现在最有希望用于智能结构的光纤布拉格光栅传感器 ,介绍了相位生成载波技术在这方面的应用。更多还原

【Abstract】 The phase generated carrier demodulation schemes are presented. The principle of phase generated carrier modulation and two types of basic modulation methods are briefly described. And the demodulation schemes, which include: homodyne demodulation, pseudo heterodyne demodulation, synthetic heterodyne demodulation, are introduced in detail. The advantages and disadvantages of the demodulation schemes are subsequently discussed. Besides the application of phase generated carrier techniques in interferometric fiber optic sensor, the application in fiber Bragg grating sensor is covered.更多还原