Optical Fiber Bragg grating based intrusion detection systems for homeland security

Abstract

Abstract-This paper describes the use of optical Fiber Bragg grating (FBG) sensors for use in various intrusion detection systems for homeland security. We show that a FBG sensor can be used effectively as an embedded in-ground acoustic sensor, sensitive enough to detect the acoustic emissions associated with walking on a concrete surface. Also, the FBG can be used as an in-ground pressure switch for intrusion detection through temporary flooring materials, such as tiles and wooden laminate. In addition, we verify the use of FBGs as in-fence perimeter breach detectors. Finally, we show how an FBG can be used as a reed switch for use in intrusion detection systems for doors and windows. The combination of the different intrusion detection techniques illustrate the versatility of FBGs in security applications , showing this single technology can be used to form a complete intrusion detection system for homeland security. Furthermore the paper details the progress made towards a realtime in-ground sensor network for advanced security applications.

Innovative Photonic Sensors for Safety and Security, Part I: Fundamentals, Infrastructural and Ground Transportations

“…FBG-based systems were also successfully used in security applications for monitoring access points, such as windows and doors [158] or in fence perimeter systems [159].…”

Optical Fiber Sensors in Physical Intrusion Detection Systems: A Review

“…The author's own research on optical fiber PIDS is based on FBG technology, but specifically focuses on increased flexibility and usability of low cost complete security systems. This includes the development of an FBG based reed switch for monitoring windows and doors [107], a simple FBG fence mounted system, and the implementation of in ground quasi distributed FBG digital and analog pressure sensors in different flooring materials [108], [109]. Furthermore, the aim is to achieve seamless integration of optical fiber sensors with traditional electronic controllers by utilizing simple, but innovative interrogation techniques [110].…”

Signal Processing for Time Domain Wavelengths of Ultra-Weak FBGs Array in Perimeter Security Monitoring Based on Spark Streaming

“…Thanks to the recent progress of modern science and technology, better solutions have become available to solve security problems. Among them are fiber Bragg grating interference technology [ 1 , 2 , 3 ], big data processing technology [ 4 , 5 , 6 ], machine learning [ 7 , 8 ] and stream processing technology [ 9 , 10 , 11 ]. Recently, our team has realized the online writing of an ultra-weak FBG (UWFBG) array during the drawing process of single mode fibers (SMF).…”