Optical Fiber Sensing Technologies

15Regional Style Intelligent Perimeter Security Technique Based on Michelson Interferometer

15.1 System Principle

15.1.1 Principle of the Michelson Interferometer‐Based Vibration Sensor

The Michelson interferometric fiber optic‐based regional perimeter security sensing systems have attracted considerable research interest due to their advantages of high sensitivity, high stability, high linearity, and easiness of multiplexing [1–5]. They have good application prospect in the field of sonar systems, seismic detection, natural resources exploration, bridge health monitoring, oil well logging supervision, and perimeter security [6–10]. The schematic diagram of the classical Michelson interferometer‐based vibration sensing system is illustrated ...