OPTEX’s fiber optic sensors are manufactured by FiberSensys, a group company of OPTEX and the only fiber sensor manufacturer offering products compliant with the U.S. Air Force’s PL-1 security standard. These sensors provide advanced perimeter protection solutions and have been trusted for over 25 years in the critical sites.
Fiber optic sensors are one of the core technologies used in Perimeter Intrusion Detection Systems (PIDS), and are particularly well-suited for environments that demand high security or involve harsh installation conditions. With advanced signal processing, false alarm reduction capabilities, and exceptional durability, these sensors are deployed globally in critical sites such as military facilities, energy infrastructure (including power plants and gas facilities), transportation hubs (such as airports and seaports), and data centers.
The detection mechanism is based on laser pulses transmitted through fiber optic cables installed along fences or other perimeter structures. When external vibrations or pressure are applied to the cable, the characteristics of the light traveling through it change. These changes are continuously monitored by the Alarm Processing Unit (APU), which uses advanced algorithms to analyze and classify the signals. The system is programmed to generate alarms only in response to disturbances caused by actual intrusion attempts —such as climbing over or cutting the fence— while ignoring environmental factors like wind, nearby traffic vibrations or small animal movements.
| Series | Fiber Defender (FD) 300 series | FD500 series | Point Defender | Terrain Defender | EchoPoint series | |||
|---|---|---|---|---|---|---|---|---|
| Models | FD322 | FD331/2 | FD341/2 | FD504/8 | FD525 | PD500 | TD100 | EchoPoint EP9300™ |
| Fence Application | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | - | ✓ |
| Wall Application | - | ✓ | ✓ | ✓ | ✓ | ✓ | - | ✓ |
| Buried | - | - | - | - | - | - | ✓ | ✓ |
| Point Location | - | - | - | - | - | ±1m | ±1m | ±6m |
| APU Remote Installation | - | - | 20km | 5km | 5km | - | - | ✓ |
| IP-enabled | ✓ | Option | Option | ✓ | ✓ | ✓ | ✓ | ✓ |
| Number of channels (zones) | 2 | 1 / 2 | 1 / 2 | 4 / 8 | 25 | Programmable | Programmable | Programmable |
| Max. sensing cable per zone | 500m | 5km | 5km | 800m | 800m | Programmable | Programmable | Programmable |
Fiber optic sensor
