干涉型光纤水听器相位载波调制及解调方案研究

Research on Phase Modulation and Demodulation of Interferometric Fiber optic Hydrophone Using Phase Generated Carrier Techniques

本文概述了Ｍａｃｈ－Ｚｅｈｎｄｅｒ干涉型光纤水听器两种不同的相位载波调制（ＰＧＣ）原理，着重分析了在直接调制半导体激光器实现相位载波的信号解调技术中伴生调幅的影响及解决办法，指出采用直接调制光源实现相位载波技术是将来构成全光纤干涉型水听器系统的优选方案。

This paper describes two different phase modulation principles of fiber optic hydrophone, mainly analyzes the additional influence of amplitude modulation in the demodulation scheme for direct diode laser source modulation and gives out the resolution, points out that the direct source modulation and demodulation technique a preferred approach for making up all fiber interferometric hydrophones and hydrophone arrays in the future.