Indoor optical fiber eavesdropping approach and its avoidance

Posted on 21.09.2022 - 20:09
The optical fiber network has become a worldwide infrastructure. In addition to the basic functions in telecommunication, its sensing ability has attracted more and more attention. In this paper, we discuss the risk of household fiber being used for eavesdropping and demonstrate its performance in the lab. Using a 3-meter tail fiber in front of the household optical modem, voices of normal human speech can be eavesdropped by a laser interferometer and recovered 1.1 km away. The detection distance limit and system noise are analyzed quantitatively. We also give some practical ways to prevent eavesdropping through household fiber.


Hao, Haiqing; Pang, Zhongwang; Wang, Guan; Wang, Bo (2022): Indoor optical fiber eavesdropping approach and its avoidance. Optica Publishing Group. Collection.
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Haiqing Hao
Zhongwang Pang
Guan Wang
Bo Wang
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