Fiber optic zone-based intrusion detection systems (IDS) offer a sophisticated approach to perimeter security by leveraging the sensitivity of optical fibers to detect disturbances. These systems divide the protected area into distinct zones, each monitored by fiber optic cables that detect minute vibrations or changes in light patterns caused by intrusion attempts. When an intrusion occurs, such as cutting, climbing, or digging, the disturbance alters the light signals within the fiber, triggering an alarm that pinpoints the specific zone of the breach. This zonal approach allows for precise location of the intrusion, enabling rapid response and reducing false alarms. Additionally, the passive nature of fiber optics makes these systems immune to electromagnetic interference and suitable for harsh environments, enhancing their reliability in critical security applications.