光纤拉曼放大在远程光纤水听器阵列应用中关键技术的研究进展

Recent Progress of Critical Technologies for FRA in Long-Distance FOH Arrays

光纤拉曼放大器(FRA)因其特有的在线、宽带、低噪声等特点在光纤通信系统中占有越来越重要的地位,但是在光纤传感中应用的研究和报道却很少。光纤水听器(FOH)作为典型的光纤传感系统,是水下探测目标的重要工具,其中的在线光放大技术一直是国内外研究的重点。在简要介绍了光纤拉曼放大器的基本原理和现有的远程大规模光纤水听器阵列光放大技术的基础上,对光纤拉曼放大器作为远程光纤水听器阵列的在线放大器时的几个关键技术进行了分析。

The Fiber Raman Amplifier （FRA） plays a more and more important role in optical fiber communication system for its particular virtues such as online performance, wideband, and low noise etc, but there is few reports on its application in optical fiber sensing system. As a typical optical fiber sensing system, Fiber Optic Hydrophone（FOH） is an important tool for detecting the target underwater, and the online amplification is a focus of study. By introducing the principle of FRA and the current optical amplification technologies in long-distance fiber optic hydrophone arrays, several critical technologies are discussed in this paper.