Abstract

Intrusion detection systems gains importance considering today‟s increased threats from various attacks. The ability to produce very long sensor arrays with high sensitivity such as fiber optic, which do not require much electrical power, will have high potential to create systems to monitor the activity in the vicinity of a perimeter or border in both land and sea. However, such sensitive configurations are very costly due to the complicated packaging and also due to sophisticated interrogator systems. Here, we demonstrate the concept of a novel system, with simple low cost configuration for intrusion detection and having moderate classification capability. The system uses commercial FBGs along with an inline erbium doped fiber as edge filter for interrogation purpose. The sensor packaging with thin metal diaphragm and incorporation of proper strain transferring mechanism offers large area surveillance with minimum sensors and detection of even human footsteps and provides smart option in security applications.

© 2016 Optical Society of America