76370929
Feb 14, 2002
Apr 25, 2006
Electronic intrusion security apparatus, namely, a mechanical fiber optic cable attenuator which causes a bend in a fiber optic cable in response to an external displacement force in the cable, said bend producing an attenuation to a light signal thereby allowing for the identification of the location of the bend and, hence, the location of intrusion for use in the field of electronic perimeter intrusion detection
Electrical and Scientific Apparatus