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光纤声传感窃听技术以其隐蔽性高、声音还原性好、环境适应性强等特点,给保密工作带来了新的挑战。强度型与干涉型光纤声传感器工作原理不同,窃听能力以及适应用场景也有所不同。本文对其窃听能力优缺点,可能的应用场景进行了分析,阐述了具体潜在的信息泄露途径。目前,针对光纤声传感窃听的防护手段只有增加声掩蔽、增强隔声性能等防止窃听的通用手段。本文提出了具有针对性的防护手段,包括光纤铺设管理要求、查找手段以及实时监控方法,以期提高敏感场合信息泄露防护水平。
Optical fiber sensor wiretapping technology for its concealment, good sound reduction, environmental adaptability and other characteristics, to confidentiality work has brought new challenges. Intensity and interference optical fiber sensors work on different principles, eavesdropping ability and adaptation scenarios are also different. This article analyzes the pros and cons of eavesdropping ability and the possible application scenarios, and expounds the specific potential ways of information leakage. At present, the only means to prevent eavesdropping is to increase the sound masking and enhance the sound insulating performance by the means of protection against optical fiber sounding eavesdropping. In this paper, we put forward some targeted protection measures, including optical fiber laying management requirements, search tools and real-time monitoring methods, in order to improve the level of information disclosure protection in sensitive situations.