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概述了直接调制光源产生相位载波的马赫－曾德尔（Ｍａｃｈ－Ｚｅｈｎｄｅｒ）干涉型光纤水听器调制解调技术。重点在于通过严密的数学推导， 定量分析了直接调制光源伴生的调幅现象对于解调过程和结果的影响， 并有针对性地提出了解决办法。同时就采用直接调制光源的相位载波零差检测方案时， 设计中如何合理选择各相关参数， 以达到最佳匹配进行了原理性探讨。给出了有关实验结果， 这些理论分析和实验结果对于全光纤化水听器阵列的研究及检测系统的设计具有十分重要的意义。
The Mach-Zehnder interferometric fiber hydrophone modulation and demodulation technology that generates phase carrier by direct modulation light source is summarized. The key point is that through rigorous mathematical derivation, we quantitatively analyze the influence of the AM phenomenon associated with the direct modulation light source on the demodulation process and the result, and put forward some solutions. In the meantime, how to select the relevant parameters reasonably when using the phase carrier zero-difference detection scheme of the direct modulation light source to achieve the best match is discussed principally. Relevant experimental results are given. These theoretical analyzes and experimental results are very important for the research of all-fiber hydrophone arrays and the design of detection system.