Patent ID: 7436316

Claim:
An optical anti-tamper system, the system comprising: a light emitting layer located within a chassis comprising one or more emitter optical fibers, each emitter optical fiber including a plurality of output ports on a side surface of the emitter optical fiber, the output ports operable to transmit light propagating through the emitter optical fiber outside of the emitter optical fiber; a light detecting layer located within the chassis comprising one or more detector optical fibers, each detector optical fiber including a plurality of input ports on a side surface of the detector optical fiber, the input ports operable to receive light for propagation within the detector optical fiber; and one or more detectors optically coupled to the light detecting layer, the one or more detectors in communication with an alarm, wherein the alarm is operable to transmit a tamper-event warning signal if an increased light level is detected by at least one detector.