Fiber Security, AFL’s optical fiber perimeter intrusion detection system, enhances a security team’s ability to detect and respond to intrusion events while reducing existing system and new construction costs.



The system employs a fence-mounted fiber optic sensing cable for vibration detection and a central sensing device analyzes both the magnitude and pattern of the vibration signatures, resulting in a system that is:

• Responsive: Low false positive rate due to noise generated by environmental factors
• Reliable: High reliability for detection of intrusion events (extremely low frequency of false negative)
• Accurate: +/-2.5% accuracy of intrusion event locations over continuous fence line lengths of up to 5 kilometers
• Flexible: Stand alone system or integrated with pan-tilt cameras and other technologies like infrared systems .

Cost Effective
AFL’s Fiber Security operation and maintenance costs are lower than other security methods which have shorter sensing lengths or require multiple transmitters and receivers. The sensing cable is very simple to deploy and affix to the fencing. For a single length of sensing cable, Fiber Security assigns individual zones to each camera using software parameters in the VSU, while competitors require separately wired and powered zones for each camera. Each zone can be programmed with its own warning and alarm thresholds with a total of 100 zones per sensing system, making AFL’s system the lowest installed cost option available.
Some security requirements are temporary. In these situations the ability to re-use equipment helps lower the operating costs of an organization. Fiber Security components can easily be moved for temporary needs or completely relocated. Reusable hardware and cabling make this transition easy and cost effective.

Low False Positives/Negatives
Fiber Security automatically adjusts to changing environmental conditions to reduce the amount of false positives and negatives. The self-tuning function and tuning performed during installation optimize detection capabilities while reducing the occurrence of false readings. Low rates of false alarms help ensure operator trust in the system and remove the sensory load on operators compared with constant scanning of CCTV monitors. Lowering the amount of alarms and inputs during a threat condition improves decision making during the security team’s response.

Robust and Flexible System Architecture
Fiber Security uses standard racking for VSU mounts. Cables and components are industry-proven through use by telecommunications providers world-wide. The system also significantly reduces the number of inputs to the master security system when compared to line of sight systems. Fiber Security offers an additional layer of real-time intrusion detection to enhance existing technologies and communicates with master security systems via dry contact outputs, RS232C or Ethernet.

Sabotage and Tamper Resistant
Optional armoring of cables makes them resistant to cutting. Optical couplers are environmentally protected inside industry proven splice closures, and the VSU is password protected to prevent unauthorized changing of parameters.

Real Time Intrusion Detection
The system provides a warning alarm which can be used as an initiating signal to direct a PTZ camera towards an event while the algorithm analyzes the signal. If the algorithm determines that the signals constitute an actual intrusion, the camera system is already focused on the event area for the security team to review and take action.

Easy Maintenance
Fiber Security is easy to repair and maintain. Damaged cables can be repaired by arc fusion splicers. Repair loops are designed into the initial layout to allow for field repairs with minimal splices.

Parameters can be safely stored on backup media and can be loaded onto a replacement VSU in the event of a system failure. The system will return to its fully operational state without the time and expense of reprogramming.

Defeats Intruder Expectations
Fiber Security can be installed in ways that cannot be seen and anticipated by intruders. Properly installed in buried applications, Fiber Security detects intruders walking over cable or can detect efforts to breach the perimeter by digging under fencing.

Backed by Fujikura Technology
Fujikura extrudes 30% of the world’s optical fiber and 15% of the world’s multi-fiber cable. With a 120-year history of producing quality products and services, Fujikura is a trusted supplier to leading telecommunications providers around the globe.