Fiber optic sensors are increasingly being used in perimeter intrusion detection systems due to their ability to provide continuous monitoring of large and complex perimeters. They detect disturbances or vibrations along the length of a fiber optic cable that is placed around the. Build a smart perimeter with a new generation of AI-powered optical fiber sensing. Intrusion incidents are common in large perimeters such as railways and airports, and in small campuses such as substations and oil and gas stations. Advanced adaptive signal processing along with certified SMS/VMS integration options ensure the. Fiber optic sensors, known for detecting minute disturbances, offering long-range capabilities, and resisting electromagnetic interference, play a key role in modern perimeter security. For this purpose, a fiber-optic sensor has been developed using G 655 optical fiber with the highest susceptibility to macrobending, which makes it possible to determine not only the fact of unauthorized access. Part of the Fiber Defender® 7000 APU Series, the FD7104 sensor is a four-zone, fibre-optic intrusion detection sensor for perimeter protection or medium to large commercial sites and critical infrastructure.